Display panel and driving method thereof

Abstract

The application discloses a display panel and a driving method thereof. The display panel comprises a control circuit, the control circuit comprises a plurality of control units, an input end of the control unit is connected to a fixed voltage, and an output end of the control unit is connected to at least one data line. The control unit is used for transmitting the fixed voltage at the input end to the data line connected to the output end when a region where a sub-pixel connected to the control unit is located does not display, so that the corresponding sub-pixel is written with the fixed voltage and does not emit light. Therefore, for the sub-pixel in the region which does not need to display, the driving chip can output the fixed voltage to the input end of the control unit connected thereto through one output port, and there is no need to output different black state data voltages corresponding to different color sub-pixels, so that the driving chip does not need to switch the output voltage when writing data to the sub-pixel line by line, which is favorable for reducing power consumption and prolonging standby time.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel and its driving method. Background Technology

[0002] With the continuous development of display technology, display devices are widely used in people's daily lives and work.

[0003] During the use of the display device, when part of the display device is not displaying, the driver chip will transmit the data voltage corresponding to the black screen to the sub-pixels of the non-displaying area.

[0004] However, existing display devices suffer from high power consumption. Summary of the Invention

[0005] This invention provides a display panel and its driving method to reduce power consumption and extend standby time.

[0006] In a first aspect, embodiments of the present invention provide a display panel, including sub-pixels arranged in an array, multiple data lines and a control circuit, wherein each data line is connected to at least one column of sub-pixels;

[0007] The control circuit includes multiple control units. The input terminal of each control unit is connected to a fixed voltage, and the output terminal of each control unit is connected to at least one data line.

[0008] The control unit is used to transmit a fixed voltage from its input terminal to the corresponding data line at the output terminal when the area where the sub-pixel it is connected to is not displayed, under the control of the input control signal, so that the corresponding sub-pixel is written with a fixed voltage and does not emit light.

[0009] Optionally, the display panel includes a display area and a non-display area adjacent to the display area; the display area includes a light-emitting area and a non-light-emitting area, and the non-display area includes a control circuit area, with each control circuit area having its own control circuit.

[0010] Optionally, the control circuit area and the non-light-emitting area are set in a one-to-one correspondence, and the control circuit area and the non-light-emitting area correspond along the direction of the data line extension;

[0011] Optionally, the non-light-emitting areas are located on both sides of the light-emitting areas;

[0012] Optionally, the non-display area is also provided with a switching circuit and a driver chip. The switching circuit is used to control whether the data voltage output terminal of the driver chip is output to the data line. The driver chip is used to control the control unit to transmit the fixed voltage of its own input terminal to the corresponding data line connected to the output terminal in power-saving mode so that the sub-pixels of the non-light-emitting area do not emit light. In normal display mode, the driver chip is used to control the input terminal and output terminal of the control unit to be turned off and control the switching circuit to be turned on so that the data line is connected to the data voltage output terminal of the driver chip so that at least some of the sub-pixels of the non-light-emitting area emit light.

[0013] Optionally, the driver chip can also be used to control its own data voltage output terminal to have no output in power-saving mode.

[0014] Optionally, the control unit includes a control subunit and a write subunit. The control terminal of the control subunit is connected to the first control signal line, the input terminal of the control subunit is connected to the second control signal line, and the output terminal of the control subunit is connected to the control terminal of the corresponding write subunit. The input terminal of the write subunit is used as the write terminal of the control unit and connected to a fixed voltage. The output terminal of the write subunit is used as the output terminal of the control unit.

[0015] The first control signal line is used to transmit control signals to turn the control subunit on or off, and the second control signal line is used to transmit the turn-on signal to control the writing subunit to turn on; or...

[0016] The first control signal line is used to transmit the control signal for turning on the control subunit, and the second control signal line is used to transmit the control signal for turning on or off the control writing subunit.

[0017] Optionally, at least one column of subpixels is a dual-color subpixel column, which includes subpixels with two emitting colors; in the control unit connected to the dual-color subpixel column, the control terminal of the control subunit includes a first sub-control terminal and a second sub-control terminal, the input terminal of the control subunit includes a first sub-input terminal and a second sub-input terminal, and the output terminal of the control subunit includes a first sub-output terminal and a second sub-output terminal; wherein, the first sub-control terminal and the second sub-control terminal are both connected to a first control signal line, and the first sub-input terminal and the second sub-input terminal are both connected to a second control signal line;

[0018] In the control unit connected to the dual-color sub-pixel column, the control terminal of the write sub-unit includes a third sub-control terminal and a fourth sub-control terminal, and the input terminal of the write sub-unit includes a third sub-input terminal and a fourth sub-input terminal; the third sub-control terminal is electrically connected to the first sub-output terminal, and the fourth sub-control terminal is electrically connected to the second sub-output terminal; both the third sub-input terminal and the fourth sub-input terminal are connected to a fixed voltage, and the output terminal of the write sub-unit is connected to a corresponding data line;

[0019] Optionally, the third sub-input terminal is connected to the first test data signal line, and the fourth sub-input terminal is connected to the second test data signal line. The first and second test data signal lines are used to transmit a fixed voltage. The writing sub-unit, the first test data signal line, and the second test data signal line are included in the test circuit. The test circuit is used to perform screen testing on the display panel.

[0020] Optionally, the write sub-unit includes a first test transistor and a second test transistor, the gate of the first test transistor serves as a third sub-control terminal, the first electrode of the first test transistor serves as a third sub-input terminal, and the second electrode of the first test transistor is electrically connected to the output terminal of the write sub-unit.

[0021] The gate of the second test transistor serves as the fourth sub-control terminal, the first terminal of the second test transistor serves as the fourth sub-input terminal, and the second terminal of the first test transistor is electrically connected to the output terminal of the write sub-unit.

[0022] And / or, the control subunit includes a first control transistor and a second control transistor, wherein the gate of the first control transistor serves as a first sub-control terminal, the first electrode of the first control transistor serves as a first sub-input terminal, and the second electrode of the first control transistor serves as a first sub-output terminal; the gate of the second control transistor serves as a second sub-control terminal, the first electrode of the second control transistor serves as a second sub-input terminal, and the second electrode of the second control transistor serves as a second sub-output terminal.

[0023] Optionally, the control unit is set to correspond one-to-one with each column of sub-pixels in the non-light-emitting area, and the output terminal of each writing sub-unit control unit is connected to a data line;

[0024] Alternatively, each column of subpixels is a two-color subpixel column, where every three columns of adjacent subpixels form a repeating unit; the non-display area is also provided with a first test control signal line, a second test control signal line, a third test control signal line, a fourth test control signal line, a fifth test control signal line, and a sixth test control signal line;

[0025] In the non-light-emitting area, the third sub-control terminal of the write sub-unit connected to the first column of sub-pixels in the repeating unit is connected to the first test control signal line, and the fourth sub-control terminal is connected to the second test control signal line; the third sub-control terminal of the write sub-unit connected to the second column of sub-pixels in the repeating unit is connected to the third test control signal line, and the fourth sub-control terminal is connected to the fourth test control signal line; the third sub-control terminal of the write sub-unit connected to the third column of sub-pixels in the repeating unit is connected to the fifth test control signal line, and the sixth control terminal is connected to the sixth test control signal line.

[0026] Each control circuit area includes 3 control units and n-3 write sub-units, where n is the number of sub-pixel columns in the non-light-emitting area corresponding to the control circuit area; the output terminal of each write sub-unit is connected to a data line; wherein, the output terminals of the three control units are electrically connected one-to-one with the data lines connected to the three columns of sub-pixels in a repeating unit; preferably, the corresponding test control signal lines of different control circuit areas are connected.

[0027] Optionally, the non-display area is also provided with a writing sub-unit that corresponds one-to-one with each column of sub-pixels in the light-emitting area. The output of each writing sub-unit is connected to a data line, and the writing sub-unit is not connected to the test control signal line.

[0028] Optionally, the test control signal lines of different control circuit areas are not connected;

[0029] The test control signal lines include a first test control signal line, a second test control signal line, a third test control signal line, a fourth test control signal line, a fifth test control signal line, and a sixth test control signal line.

[0030] Optionally, at least one column of subpixels is a monochromatic subpixel column, which includes subpixels of one emission color;

[0031] In the control unit connected to the monochrome sub-pixel column, the writing sub-unit includes a third test transistor. The gate of the third test transistor serves as the control terminal of the writing sub-unit, the first electrode of the third test transistor serves as the input terminal of the writing sub-unit, and the second electrode of the third test transistor serves as the output terminal of the writing sub-unit.

[0032] In the control unit connected to the monochrome sub-pixel column, the write sub-unit includes a third control transistor. The gate of the third control transistor serves as the control terminal of the control sub-unit, the first electrode of the third control transistor serves as the input terminal of the control sub-unit, and the second electrode of the third control transistor serves as the output terminal of the control sub-unit.

[0033] Optionally, in the control unit connected to the monochrome sub-pixel column, the input terminal of the control sub-unit is connected to the third test data signal line, which is used to transmit a fixed voltage;

[0034] Optionally, the write sub-unit and the third test data signal line are included in the test circuit; the test circuit is used to perform screen testing on the display panel.

[0035] Optionally, the first control signal line is used to transmit control signals for turning the control subunit on or off, and the second control signal line is used to transmit the turn-on signal for turning the control writing subunit on; the first control signal lines in different control circuit areas are insulated from each other, and the second control signal lines in different control circuit areas are interconnected to form a single signal line;

[0036] or,

[0037] The first control signal line is used to transmit the control signal for turning on the control subunit, and the second control signal line is used to transmit the control signal for turning on or off the control writing subunit; the first control signal lines in different control circuit areas are interconnected as a single signal line, and the second control signal lines in different control circuit areas are insulated from each other.

[0038] Optionally, the control terminal of the control unit is connected to a third control signal line, the input terminal of the control unit is connected to a fixed voltage, and the output terminal of the control unit is connected to at least one data line;

[0039] Optionally, at least one column of sub-pixels is a two-color sub-pixel column. The control unit connected to the two-color sub-pixel column includes a first test transistor and a second test transistor. The gates of both the first and second test transistors are electrically connected to the control terminal of the control unit. The first terminal of the first test transistor serves as the first input terminal of the control unit and is connected to a first test data signal line. The second terminal of the first test transistor is electrically connected to the output terminal of the control unit. The first terminal of the second test transistor serves as the second input terminal of the control unit and is connected to a second test data signal line. The second terminal of the first test transistor is electrically connected to the output terminal of the control unit. The first and second test data signal lines are used to transmit a fixed voltage.

[0040] Optionally, at least one column of sub-pixels is a monochrome sub-pixel column, and the control unit connected to the monochrome sub-pixel column includes a third test transistor, the gate of the third test transistor serving as the control terminal of the control unit; the first electrode of the third test transistor serving as the input terminal of the control unit, the input terminal of the control unit being connected to a third test data signal line; the second electrode of the third test transistor serving as the output terminal of the control unit; and the third test data signal line being used to transmit a fixed voltage.

[0041] Optionally, the control unit, the first test data signal line, the second test data signal line, and the third test data signal line are included in the test circuit; the test circuit is used to perform screen testing on the display panel.

[0042] In a second aspect, embodiments of the present invention also provide a driving method for a display panel, the driving method being used to drive the display panel of the first aspect, the driving method comprising: when the area where the sub-pixel connected to the control unit is not displayed, controlling the control unit to transmit a fixed voltage at its input terminal to the corresponding data line connected to its output terminal, so that the corresponding sub-pixel is written with a fixed voltage and does not emit light;

[0043] Optionally, the display panel includes a display area and a non-display area adjacent to the display area; the display area includes a light-emitting area and a non-light-emitting area, and the non-display area includes a control circuit area for setting control circuits, with the control circuit area and the non-light-emitting area being set in a one-to-one correspondence;

[0044] The driving method also includes:

[0045] In power-saving mode, the control unit transmits a fixed voltage from its input terminal to the corresponding data line connected to the output terminal so that the sub-pixels in the non-light-emitting area do not emit light.

[0046] In normal display mode, the input and output terminals of the control unit are switched off, and the data line is connected to the data voltage output terminal of the driver chip so that at least some sub-pixels in the non-light-emitting area emit light.

[0047] Optionally, in power-saving mode, there is no output at the control data voltage output terminal.

[0048] This invention provides a display panel and its driving method. The control circuit of the display panel includes multiple control units. Each control unit has a fixed voltage input and an output connected to at least one data line. When the area containing the sub-pixel to which it is connected is not displayed, the control unit transmits the fixed voltage from its input to the corresponding data line at its output, so that the corresponding sub-pixel is written with the fixed voltage and does not emit light. Therefore, for sub-pixels in areas that do not need to be displayed, the driving chip can output a fixed voltage to the input of the corresponding control unit through an output port, without needing to output different black state data voltages corresponding to different color sub-pixels. Thus, when writing data to sub-pixels row by row, the driving chip does not need to switch the output voltage, which helps reduce power consumption and extend standby time. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0050] Figure 2 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention;

[0051] Figure 3 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention;

[0052] Figure 4 yes Figure 3 A schematic diagram of the connection structure between a column of sub-pixels and the control unit;

[0053] Figure 5 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention;

[0054] Figure 6 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention;

[0055] Figure 7This is a schematic diagram of another display panel structure provided in an embodiment of the present invention;

[0056] Figure 8 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention;

[0057] Figure 9 This is a flowchart of a display panel driving method provided in an embodiment of the present invention. Detailed Implementation

[0058] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0059] As described in the background section, during the use of a display device, when a portion of the display is not displayed, the driver chip transmits the data voltage corresponding to the black screen to the sub-pixels of that non-displaying area. However, existing display devices suffer from high power consumption. The inventors discovered that this problem arises because the display device operates in two modes: a power-saving mode and a normal display mode. In power-saving mode, only a portion of the display area is displayed, while the remaining area remains undisplayed. Even in power-saving mode, when transmitting data to the sub-pixels of the display area, in addition to transmitting the bright data voltage to the sub-pixels that need to be displayed, it is still necessary to transmit the black data voltage to the sub-pixels in the non-displaying areas. Because the black data voltages corresponding to different color sub-pixels are different, when writing data voltages to sub-pixels line by line, the driver chip needs to switch between different data voltage outputs at the same data voltage output terminal, resulting in high power consumption even in power-saving mode.

[0060] For the reasons stated above, embodiments of the present invention provide a display panel. Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention, for reference. Figure 1 The display panel includes an array of sub-pixels 100, multiple data lines 200, and a control circuit 300. Each data line 200 connects to at least one column of sub-pixels 100. The control circuit 300 includes multiple control units 310. The input terminal of each control unit 310 is connected to a fixed voltage V0, and the output terminal of each control unit 310 is connected to at least one data line 200. Under the control of the input control signal, when the area where the sub-pixel 100 connected to it is not displayed, the control unit 310 transmits the fixed voltage V0 of its input terminal A1 to the corresponding data line 200 connected to its output terminal A2, so that the corresponding sub-pixel 100 is written with the fixed voltage V0 and does not emit light.

[0061] Specifically, the arrayed sub-pixels 100 may include sub-pixels 100 of at least two colors. Optionally, the arrayed sub-pixels 100 may include red sub-pixels, green sub-pixels, and blue sub-pixels. The sub-pixels 100 in the display panel may be arranged in an m-row n-column array, where m and n are both positive integers greater than 1. The number of sub-pixels 100 in different rows may be the same or different; the number of sub-pixels 100 in different columns may also be the same or different. This embodiment does not impose specific limitations on this. For example, in conventional display devices such as mobile phones, computers, and tablets, the number of sub-pixels 100 in different rows is the same, and the number of sub-pixels 100 in different columns is the same. For irregularly shaped display devices, such as wearable products, the number of sub-pixels 100 in different rows is different, and the number of sub-pixels 100 in different columns is different.

[0062] The display panel also includes a data line 200, which connects to at least one column of sub-pixels 100 and transmits data voltage to the corresponding connected sub-pixels 100 via the data line 200. When the data line 200 transmits a bright-state data voltage to the sub-pixel 100, the sub-pixel 100 is lit; when the data line 200 transmits a dark-state data voltage to the sub-pixel 100, the sub-pixel 100 is not lit.

[0063] In this embodiment, the display panel further includes a control circuit 300, which includes multiple control units 310. The input terminal of each control unit 310 is connected to a fixed voltage V0, and the output terminal of each control unit 310 is connected to at least one data line 200. When the area where the sub-pixel 100 connected to the control unit 310 via the data line 200 is not displayed, the control unit 310 transmits the fixed voltage V0 at its input terminal A1 to its output terminal A2, and then transmits the fixed voltage V0 at its input terminal to the data line 200 connected to the control unit 310. The fixed voltage V0 is a voltage that can prevent all color sub-pixels 100 in the display panel from emitting light, thereby preventing the sub-pixels 100 connected to the control unit 310 from emitting light. Therefore, for sub-pixels 100 in areas that do not need to be displayed, the driver chip can output a fixed voltage V0 to the input terminal of the corresponding connected control unit 310 through an output port, without having to output different black state data voltages corresponding to different color sub-pixels 100 through the data voltage output port. Thus, when writing data to sub-pixels 100 line by line, the driver chip does not need to switch the output voltage and can maintain the output of a fixed voltage V0, which helps to save power consumption.

[0064] For example, when the display panel is working in power-saving mode, the control unit 310 connected to the sub-pixel 100 in the display area AA that does not need to be displayed can be controlled to transmit the fixed voltage V0 of its input terminal to the output terminal. Then, when writing data to the sub-pixel 100 line by line, a column of sub-pixels 100 connected to the control unit 310 are all written with the same fixed voltage V0, so that the column of sub-pixels 100 is not displayed.

[0065] It should be noted that, in this embodiment, Figure 1 The example shows a case where the output terminal A2 of a control unit 310 is connected to a single data line. In other optional embodiments of the present invention, a control unit 310 can be connected to multiple data lines, thereby reducing the number of control units 310 in the control circuit 300. This is beneficial for reducing the area of ​​the control circuit 300, thereby reducing the area of ​​the non-display area and facilitating the implementation of a narrow bezel.

[0066] The display panel of this embodiment includes a control circuit, which comprises multiple control units. Each control unit has a fixed voltage input and an output connected to at least one data line. When the area containing the sub-pixel to which it is connected is not displayed, the control unit transmits the fixed voltage from its input to the corresponding data line at its output, so that the corresponding sub-pixel is written with the fixed voltage and does not emit light. Therefore, for sub-pixels in areas that do not need to be displayed, the driver chip can output a fixed voltage to the input of the corresponding control unit through an output port, instead of outputting different black state data voltages corresponding to different color sub-pixels through a data voltage output port. Thus, when writing data to sub-pixels row by row, the driver chip does not need to switch the output voltage, which helps reduce power consumption and extend standby time.

[0067] Figure 2 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention, for reference. Figure 2 Optionally, the display panel includes a display area AA and a non-display area NAA adjacent to the display area AA; the display area AA includes an emitting area AA1 and a non-emitting area AA2, and the non-display area NAA includes a control circuit area NAA1, each control circuit area NAA1 is provided with a control circuit 300, and the control circuit area NAA1 and the non-emitting area AA2 are provided in a one-to-one correspondence.

[0068] The operating modes of the display panel can include power-saving mode and normal display mode. The luminous area AA1 in the display area AA is the area that needs to be displayed in power-saving mode, and the non-luminous area AA2 in the display area AA is the area that does not need to be displayed in power-saving mode.

[0069] The non-display area NAA includes a control circuit area NAA1 that corresponds one-to-one with the non-light-emitting area AA2. Each control circuit area NAA1 is provided with a control circuit 300. The control circuit 300 is connected to the sub-pixel 100 of the non-light-emitting area AA2 corresponding to the control circuit area NAA1, and then controls the writing of a fixed voltage V0 to the sub-pixel 100 of the corresponding non-light-emitting area AA2 through the control circuit 300 of the control circuit area NAA1.

[0070] Optionally, along the direction of the data line 200, the control circuit area NAA1 corresponds to the non-light-emitting area AA2; this facilitates the connection between the control circuit 300 and the sub-pixel 100 in the corresponding non-light-emitting area AA2, making the wiring of the display panel more simplified.

[0071] Optionally, the non-light-emitting area AA2 is located on both sides of the light-emitting area AA1, so that the light-emitting area AA1 is located in the relatively middle area of ​​the display area AA, which makes it convenient for users to view and helps to improve the user experience.

[0072] Continue to refer to Figure 2 Optionally, the non-display area NAA is also provided with a switch circuit 400 and a driver chip 500. The switch circuit 400 is used to control whether the data voltage output terminal of the driver chip 500 is output to the data line. Optionally, the switch circuit 400 is located between the data line 200 and the data voltage output terminal of the driver chip 500. The driver chip 500 is used to control the control unit 310 to transmit the fixed voltage V0 of its input terminal A1 to the data line 200 connected to the output terminal A2 in power-saving mode, so that the sub-pixels 100 of the non-light-emitting area AA2 do not emit light; and is used to control the input terminal A1 and the output terminal A2 of the control unit 310 to be turned off in normal display mode, and control the switch circuit 400 to be turned on, so that the data line 200 is connected to the data voltage output terminal of the driver chip 500, so that at least some of the sub-pixels 100 of the non-light-emitting area AA2 emit light.

[0073] Specifically, the driver chip 500 may be included in the display panel or in the display device, which may also include the display panel of any embodiment of the present invention. The driver chip 500 includes multiple data voltage output terminals, and a switching circuit 400 is provided between the multiple data voltage output terminals and multiple data lines 200. The switching circuit 400 may include multiple switching units. For example, each switching unit may include a switch. The input terminal of each switch is connected to a data voltage output terminal, and the output terminal of each switch is connected to a corresponding data line 200. The control terminal of each switch may be electrically connected to the control port of the driver chip 500. The control signal is output from the control port of the driver chip 500 to the control terminal of the switch to control the switch's on or off state. In another optional embodiment of the present invention, the switching circuit 400 includes a multiplexing circuit, which includes multiple multiplexing units. The input terminal of each multiplexing unit is connected to a data voltage output terminal of the driver chip 500, and the output terminal of each multiplexing unit is connected to at least two data lines 200. The multiplexing unit includes at least two switches. The driver chip 500 controls the at least two switches of the multiplexing unit to be turned on in a time-division manner, thereby realizing the time-division output of data voltage to different data lines 200.

[0074] In power-saving mode, the driver chip 500 controls the control unit 310 to transmit a fixed voltage V0 from its input terminal to the corresponding data line 200 at its output terminal. This ensures that during line-by-line data writing, each sub-pixel 100 of the non-light-emitting area AA2 is written with the same fixed voltage V0, preventing the sub-pixels 100 of the non-light-emitting area AA2 from emitting light and saving power. In normal display mode, the driver chip 500 controls the control unit 310 to shut off its input and output terminals and controls the switching circuit 400 to turn on, connecting the data line 200 to the data voltage output terminal of the driver chip 500. This causes at least some of the sub-pixels 100 of the non-light-emitting area AA2 to emit light, thereby achieving normal display functionality.

[0075] In the prior art, during inter-frame transitions, the data voltage output terminal of the driver chip 500 is in a high-impedance state, resulting in significant power consumption. In this embodiment, the driver chip 500 is also used to control its own data voltage output terminal to have no output in power-saving mode, with the data voltage output terminal in a floating state, which can further save power consumption.

[0076] Continue to refer to Figure 2Based on the above technical solution, optionally, the control unit 310 includes a control subunit 311 and a writing subunit 312. The control terminal of the control subunit 311 is connected to the first control signal line CTRL1, the input terminal of the control subunit 311 is connected to the second control signal line CTRL2, and the output terminal of the control subunit 311 is connected to the corresponding control terminal of the writing subunit 312. The input terminal of the writing subunit 312 serves as the writing terminal of the control unit 310 and is connected to a fixed voltage V0. The output terminal of the writing subunit 312 serves as the output terminal of the control unit 310. Both the first control signal line CTRL1 and the second control signal line CTRL2 can be connected to the driver chip 500, meaning the driver chip 500 provides corresponding control signals to the first control signal line CTRL1 and the second control signal line CTRL2.

[0077] In an optional embodiment of the present invention, the first control signal line CTRL1 is used to transmit control signals for controlling the control subunit 311 to be turned on or off, and the second control signal line CTRL2 is used to transmit the turn-on signal for controlling the write subunit 312 to be turned on.

[0078] Specifically, when the first control signal line CTRL1 transmits a signal to control the control subunit 311 to turn on, the control subunit 311 turns on. The signal on the second control signal line CTRL2 is transmitted through the control subunit 311 to the control terminal of the write subunit 312. This signal on the second control signal line CTRL2 is a turn-on signal used to control the write subunit 312 to turn on, thereby causing the write subunit 312 to turn on in response to this turn-on signal. The fixed voltage V0 at the input terminal of the write subunit 312 is transmitted to the output terminal of the write subunit 312, i.e., the output terminal of the control unit 310, so that the fixed voltage V0 is transmitted to the corresponding connected data line 200. When the first control signal transmits a signal to control the control subunit 311 to turn off, the control subunit 311 turns off. The signal on the second control signal line CTRL2 cannot be transmitted through the control subunit 311 to the control terminal of the write subunit 312, so the write subunit 312 turns off. Correspondingly, the fixed voltage V0 connected to the input terminal of the write subunit 312 cannot be transmitted to the corresponding connected data line 200. In power-saving mode, the first control signal line CTRL1 transmits the signal that the control subunit 311 is turned on; in normal display mode, the first control signal line CTRL1 transmits the signal that the control subunit 311 is turned off.

[0079] Optionally, the first control signal lines CTRL1 in different control circuit areas NAA1 are mutually insulated, while the second control signal lines CTRL2 in different control circuit areas NAA1 are interconnected as a single signal line. This allows different signals to be connected to the first control signal lines CTRL1 in different control circuit areas NAA1, enabling the control circuits 300 in different control circuit areas NAA1 to independently control the sub-pixels 100 in the corresponding non-light-emitting areas AA2. Furthermore, since the second control signal lines CTRL2 are interconnected as a single signal line, only one identical signal needs to be connected to each second control signal line CTRL2, simplifying wiring and reducing the number of ports on the driver chip 500. It should be noted that in other optional embodiments of the present invention, the first control signal lines CTRL1 in different control circuit areas NAA1 can also be interconnected. In this case, the sub-pixels 100 in different non-light-emitting areas AA2 may simultaneously receive a fixed voltage V0, or may not simultaneously receive a fixed voltage V0. Therefore, the control of the sub-pixels 100 in different non-light-emitting areas AA2 is joint, not independent.

[0080] In another optional embodiment of the present invention, the first control signal line CTRL1 is used to transmit the control signal for controlling the control subunit 311 to be turned on, and the second control signal line CTRL2 is used to transmit the control signal for controlling the writing subunit 312 to be turned on or off.

[0081] Specifically, the first control signal line CTRL1 transmits a control signal to enable the control subunit 311. The control subunit 311 remains on in response to this signal, thereby transmitting the signal on the second control signal line CTRL2 connected to its input terminal to the control terminal of the writing subunit 312. The writing subunit 312 is enabled in response to the control signal on the second control signal line CTRL2 transmitted from the control subunit 311, transmitting the fixed voltage V0 connected to its input terminal to its output terminal. This fixed voltage V0 is then transmitted to the corresponding data line 200 via the output terminal of the control unit 310. Conversely, the writing subunit 312 is disabled in response to the control signal on the second control signal line CTRL2 transmitted from the control subunit 311. Consequently, the fixed voltage V0 cannot be transmitted to the output terminal of the writing subunit 312, and therefore cannot be transmitted to the corresponding data line 200 connected to the output terminal of the control unit 310. In power-saving mode, the second control signal line CTRL2 transmits a signal to turn on the control writing subunit 312; in normal display mode, the second control signal transmits a signal to turn off the control writing subunit 312.

[0082] Optionally, the first control signal lines CTRL1 in different control circuit areas NAA1 are interconnected as a single signal line, while the second control signal lines CTRL2 in different control circuit areas NAA1 are insulated from each other. This allows different signals to be connected to the second control signal lines CTRL2 in different control circuit areas NAA1, enabling the control circuits 300 in different control circuit areas NAA1 to independently control the sub-pixels 100 in the corresponding non-light-emitting areas AA2. Furthermore, since the first control signal lines CTRL1 are interconnected as a single signal line, only one identical signal needs to be connected to each first control signal line CTRL1, simplifying wiring and reducing the number of ports on the driver chip 500.

[0083] It should be noted that in other optional embodiments of the present invention, the second control signal line CTRL2 in different control circuit areas NAA1 can also be interconnected. In this case, the sub-pixels 100 in different non-light-emitting areas AA2 will simultaneously write a fixed voltage V0, or simultaneously not write a fixed voltage V0. Thus, the control of the sub-pixels 100 in different non-light-emitting areas AA2 is carried out jointly, rather than independently.

[0084] Figure 3 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention. Figure 4 yes Figure 3 A schematic diagram of the connection structure between a column of sub-pixels and the control unit, for reference. Figure 3 and Figure 4 Optionally, at least one column of sub-pixels 100 is a dual-color sub-pixel column, which includes sub-pixels 100 with two different luminous colors. Figure 3 The diagram schematically illustrates three columns of sub-pixels. In the first column, red sub-pixels R and blue sub-pixels B are arranged alternately; in the second column, green sub-pixels G and red sub-pixels R are arranged alternately; and in the third column, blue sub-pixels B and green sub-pixels G are arranged alternately. In the control unit 310 connected to the dual-color sub-pixel columns, the control sub-unit 311 has a control terminal including a first sub-control terminal C11 and a second sub-control terminal C12, an input terminal including a first sub-input terminal D11 and a second sub-input terminal D12, and an output terminal including a first sub-output terminal H11 and a second sub-output terminal H12. Both the first sub-control terminal C11 and the second sub-control terminal C12 are connected to the first control signal line CTRL1, and both the first sub-input terminal D11 and the second sub-input terminal D12 are connected to the second control signal line CTRL2.

[0085] In the control unit 310 connected to the dual-color sub-pixel column, the control terminal of the write sub-unit 312 includes a third sub-control terminal E11 and a fourth sub-control terminal E12, and the input terminal of the write sub-unit 312 includes a third sub-input terminal A11 and a fourth sub-input terminal A12; the third sub-control terminal E11 is electrically connected to the first sub-output terminal H11, and the fourth sub-control terminal E12 is electrically connected to the second sub-output terminal H12; both the third sub-input terminal A11 and the fourth sub-input terminal A12 are connected to a fixed voltage V0, and the output terminal of the write sub-unit 312 is connected to a corresponding data line 200.

[0086] Specifically, in this embodiment, the control subunit 311 controls the conduction state between its first sub-input terminal D11 and first sub-output terminal H11 according to the voltage of the first sub-control terminal C11, and controls the conduction state between its second sub-input terminal D12 and second sub-output terminal H12 according to the voltage of the second sub-control terminal C12. The writing subunit 312 controls the conduction state between its third sub-input terminal A11 and the output terminal of the writing subunit 312 according to the voltage of the third sub-control terminal E11, and controls the conduction state between its fourth sub-input terminal A12 and the output terminal of the writing subunit according to the voltage of the fourth sub-control terminal E12. In this embodiment, through the above structure of the control unit 310 connected to the dual-color sub-pixel column, it is convenient for the display panel to implement other functions using at least part of the control circuit 300 before leaving the factory.

[0087] For example, in an optional embodiment of the present invention, the third sub-input terminal A11 is connected to the first test data signal line DW1, and the fourth sub-input terminal A12 is connected to the second test data signal line DW2. The first test data signal line DW1 and the second test data signal line DW2 are used to transmit a fixed voltage V0. The writing sub-unit 312, the first test data signal line DW1 and the second test data signal line DW2 are included in the test circuit. The test circuit is used to perform screen testing on the display panel.

[0088] In this embodiment, the first test data signal line DW1, the second test data signal line DW2, and the writing subunit 312 of the control unit 310 are included in the test circuit. The test circuit is used to implement the pre-shipment testing function of the display panel, specifically for performing screen testing on the display panel. When testing the display panel, the first test data signal line DW1 is used to transmit the test data voltage corresponding to one color sub-pixel 100 in the dual-color sub-pixel column, and the second test data signal line DW2 is used to transmit the test data voltage corresponding to another color sub-pixel 100 in the dual-color sub-pixel column. By controlling the first sub-input terminal D11 and output terminal, and the second sub-input terminal D12 and output terminal of the writing subunit 312 to be time-divisionally connected, the writing of the corresponding test data voltages to different color sub-pixels 100 in the dual-color sub-pixel column is realized, thereby achieving the testing of the display panel. In this embodiment, the control circuit 300 partially utilizes the existing circuit structure in the display panel, making the structure of the display panel simple and the manufacturing process relatively simplified.

[0089] It should be noted that when the display panel includes three color sub-pixels, but only includes two test data signal lines, the first test data signal line DW1 and the second test data signal line DW2, one of the test data signal lines can provide test data signals corresponding to the two different color sub-pixels in a time-division manner to realize the test function of the display panel.

[0090] Continue to refer to Figure 3 and Figure 4 Optionally, the write sub-unit 312 includes a first test transistor T1 and a second test transistor T2. The gate of the first test transistor T1 serves as the third sub-control terminal E11, the first electrode of the first test transistor T1 serves as the third sub-input terminal A11, and the second electrode of the first test transistor T1 is electrically connected to the output terminal of the write sub-unit 312. The gate of the second test transistor T2 serves as the fourth sub-control terminal E12, the first electrode of the second test transistor T2 serves as the fourth sub-input terminal A12, and the second electrode of the first test transistor T1 is electrically connected to the output terminal of the write sub-unit 312.

[0091] Specifically, the first test transistor T1 turns on when the voltage at the third sub-control terminal E11 meets the conduction condition, transmitting a fixed voltage V0 to the output terminal of the write sub-unit 312, which is also the output terminal of the control unit 310. The second test transistor T2 turns on when the voltage at the fourth sub-control terminal E12 meets the conduction condition, transmitting a fixed voltage V0 to the output terminal of the write sub-unit 312, which is also the output terminal of the control unit 310.

[0092] Continue to refer to Figure 3 and Figure 4Optionally, the control subunit 311 includes a first control transistor T3 and a second control transistor T4. The gate of the first control transistor T3 serves as the first sub-control terminal C11, the first electrode of the first control transistor T3 serves as the first sub-input terminal D11, and the second electrode of the first control transistor T3 serves as the first sub-output terminal H11. The gate of the second control transistor T4 serves as the second sub-control terminal C12, the first electrode of the second control transistor T4 serves as the second sub-input terminal D12, and the second electrode of the second control transistor T4 serves as the second sub-output terminal H12.

[0093] Specifically, the first control transistor T3 turns on when the voltage at the first sub-control terminal C11 meets the conduction condition, transmitting the voltage on the second control signal line CTRL2 to the first sub-output terminal H11. The first sub-output terminal H11 is connected to the third sub-control terminal E11. The first test transistor T1 turns on or off according to the voltage at the third sub-control terminal E11. The second control transistor T4 turns on when the voltage at the second sub-control terminal C12 meets the conduction condition, transmitting the voltage on the second control signal line CTRL2 to the second sub-output terminal H12. The second sub-output terminal H12 is electrically connected to the fourth sub-control terminal E12. The second test transistor T2 turns on or off according to the voltage at the fourth sub-control terminal E12.

[0094] Figure 5 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention, for reference. Figure 5 Optionally, each column of sub-pixels 100 is a two-color sub-pixel column, wherein every three columns of adjacent sub-pixels 100 form a repeating unit 10; wherein Figure 4 The diagram schematically illustrates the arrangement of red sub-pixels R and blue sub-pixels B in the first column of the repeating unit 10, green sub-pixels G and red sub-pixels R in the second column, and blue sub-pixels B and green sub-pixels G in the third column. The non-display area NAA also includes a first test control signal line DSW1, a second test control signal line DSW2, a third test control signal line DSW3, a fourth test control signal line DSW4, a fifth test control signal line DSW5, and a sixth test control signal line DSW6.

[0095] In the non-light-emitting area AA2, the third sub-control terminal E11 of the write sub-unit 312 connected to the first column of sub-pixels 100 in the repeating unit 10 is connected to the first test control signal line DSW1, and the fourth sub-control terminal E12 is connected to the second test control signal line DSW2; the third sub-control terminal E11 of the write sub-unit 312 connected to the second column of sub-pixels 100 in the repeating unit 10 is connected to the third test control signal line DSW3, and the fourth sub-control terminal E12 is connected to the fourth test control signal line DSW4; the third sub-control terminal E11 of the write sub-unit 312 connected to the third column of sub-pixels 100 in the repeating unit 10 is connected to the fifth test control signal line DSW5, and the sixth control terminal is connected to the sixth test control signal line DSW6.

[0096] Optionally, each test control signal line is included in the test circuit, which is used to perform screen testing on the display panel. The test control signal lines include a first test control signal line DSW1, a second test control signal line DSW2, a third test control signal line DSW3, a fourth test control signal line DSW4, a fifth test control signal line DSW5, and a sixth test control signal line DSW6. Each test control signal line is used to transmit test control signals during the testing of the display panel. The test control signals transmitted by different test control signal lines at the same time can be the same or different, controlled according to the pixel arrangement in the display panel, to achieve the testing function of 100 color sub-pixels in the display panel.

[0097] refer to Figures 1-5 In an optional embodiment of the present invention, the control unit 310 is configured to correspond one-to-one with each column of sub-pixels 100 in the non-light-emitting area AA2. The output terminal of each control unit 310 is connected to a data line 200. That is, the number of control units 310 is equal to the number of columns of sub-pixels 100 in the non-light-emitting area AA2. The output terminal of each control unit 310 is connected to a corresponding data line 200. Thus, when the column of sub-pixels 100 does not need to be displayed, the control unit 310 transmits a fixed voltage V0 to the data line 200 connected to the column of sub-pixels 100 to reduce power consumption.

[0098] Figure 6 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention, for reference. Figure 6 In another optional embodiment of the present invention, the control circuit 300 of each control circuit area NAA1 includes three control units 310 and n-3 writing sub-units 312, where n is the number of columns of sub-pixels 100 included in the non-light-emitting area AA2 corresponding to the control circuit area NAA1; the output terminal of each writing sub-unit 312 is connected to a data line 200; wherein, the output terminals of the three control units 310 are electrically connected one-to-one with the data lines 200 connected to the three columns of sub-pixels 100 in a repeating unit 10.

[0099] In this embodiment, each control circuit 300 includes only three control units 310. In each control unit 310, the first sub-output terminal H11 of the control subunit 311 is connected to the third sub-control terminal E11 of the corresponding write subunit 312, and the second sub-output terminal H12 of the control subunit 311 is connected to the fourth sub-control terminal E12 of the corresponding write subunit 312. In each repeating unit 10, the third sub-control terminal E11 of the write subunit 312 connected to the first column of sub-pixels 100 in the repeating unit 10 is connected to the first test control signal line D. SW1, the fourth sub-control terminal E12 is connected to the second test control signal line DSW2; the third sub-control terminal E11 of the write sub-unit 312 connected to the second column sub-pixel 100 in the repeating unit 10 is connected to the third test control signal line DSW3, and the fourth sub-control terminal E12 is connected to the fourth test control signal line DSW4; the third sub-control terminal E11 of the write sub-unit 312 connected to the third column sub-pixel 100 in the repeating unit 10 is connected to the fifth test control signal line DSW5, and the sixth control terminal is connected to the sixth test control signal line DSW6. Therefore, after the first sub-input terminal D11 and the first sub-output terminal H11 of the control sub-unit 311 in the control unit 310 connected to the first column of sub-pixels 100 in a repeating unit 10 are turned on, the voltage on the second control signal line CTRL2 is transmitted to the first test control signal line DSW1, and then reaches the third sub-control terminal E11 of the write sub-unit 312 connected to the first column of sub-pixels 100 in each repeating unit 10, so that the third sub-input terminal A11 and the output terminal A2 of the write sub-unit 312 connected to the first column of sub-pixels 100 in each repeating unit 10 are turned on or off according to the voltage of the third sub-control terminal; After the second sub-input terminal D12 and the second sub-output terminal H12 of the control subunit 311 in the control unit 310 connected to the first column of sub-pixels 100 in a repeating unit 10 are turned on, the voltage on the second control signal line CTRL2 is transmitted to the second test control signal line DSW2, and then reaches the fourth sub-control terminal E12 of the write subunit 312 connected to the first column of sub-pixels 100 in each repeating unit 10. This causes the fourth sub-input terminal A12 and the output terminal A2 of the write subunit 312 connected to the first column of sub-pixels 100 in each repeating unit 10 to be turned on or off according to the voltage of the fourth sub-control terminal E12. The working principle of the write subunit 312 connected to the second column of sub-pixels 100 and the write subunit 312 connected to the third column of sub-pixels 100 in the repeating unit 10 is the same as that of the write subunit 312 connected to the first column of sub-pixels 100 in the repeating unit 10, and will not be described again here.

[0100] The display panel of this embodiment does not require changes to the connection relationship of the existing test circuit, and the number of control sub-units required is small, which helps to simplify the structure and manufacturing process of the display panel.

[0101] It should be noted that, Figure 5 and Figure 6 The figure schematically illustrates a portion of the sub-pixels 100 in a non-light-emitting area AA2, and a portion of the structure of the control circuit 300 corresponding to a non-light-emitting area AA2. The control circuits 300 corresponding to other non-light-emitting areas AA2 have the same structure as shown in the figure.

[0102] Based on the above technical solution, optionally, the corresponding test control signal lines of different control circuit areas NAA1 are connected. Therefore, there is no need to set up additional test control signal lines in the display panel. The signals of the test circuit itself in the display panel can be used, which helps to simplify the wiring structure of the display panel.

[0103] Optionally, the non-display area NAA is also provided with a writing sub-unit 312 that corresponds one-to-one with each column of sub-pixels 100 in the light-emitting area AA1. The output of each writing sub-unit 312 is connected to a data line 200, and the writing sub-unit 312 is not connected to the test control signal line. Because the sub-pixels 100 of the entire display area AA need to be tested during the pre-shipment testing of the display panel, the non-display area NAA is also provided with a writing sub-unit 312 that corresponds one-to-one with each column of sub-pixels 100 in the light-emitting area AA1, and the sub-pixels 100 of the light-emitting area AA1 are tested through this writing sub-unit 312. It should be noted that before the display panel leaves the factory, each writing sub-unit 312 is connected to the corresponding test control signal line. After the test is completed, the writing sub-unit 312 connected to the sub-pixel 100 column of the light-emitting area AA1 is disconnected from the test control signal line. In the display panel products after leaving the factory, the writing sub-unit 312 connected to the sub-pixel 100 of the light-emitting area AA1 is disconnected from the control signal line. This avoids the fixed voltage V0 being transmitted to the sub-pixel 100 of the light-emitting area AA1 in power-saving mode, which would cause the sub-pixel 100 of the light-emitting area AA1 to fail to display normally in power-saving mode.

[0104] In another optional embodiment of the present invention, the test control signal lines of different control circuit areas NAA1 are not connected. Then the control circuit 300 of different control circuit areas NAA1 can independently control the corresponding non-light-emitting areas AA2, so that in other modes except power-saving mode and normal display mode, the light-emitting state of different non-light-emitting areas AA2 can be different. For example, one non-light-emitting area AA2 can be lit, while other non-light-emitting areas AA2 are not lit.

[0105] Figure 7 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention, for reference. Figure 7 Optionally, at least one column of sub-pixels 100 is a monochromatic sub-pixel column, which includes sub-pixels 100 of one emission color; wherein Figure 7The diagram illustrates a display panel comprising a double-grid subpixel column with alternating red subpixels R and blue subpixels B, and a monochrome subpixel column with green subpixels B.

[0106] In the control unit 310 connected to the monochrome sub-pixel column, the writing sub-unit 312 includes a third test transistor T5. The gate of the third test transistor T5 serves as the control terminal of the writing sub-unit 312, the first electrode of the third test transistor T5 serves as the input terminal of the writing sub-unit 312, and the second electrode of the third test transistor T5 serves as the output terminal of the writing sub-unit 312.

[0107] In the control unit 310 connected to the monochrome sub-pixel column, the control sub-unit 311 includes a third control transistor T6. The gate of the third control transistor T6 serves as the control terminal of the control sub-unit 311, the first electrode of the third control transistor T6 serves as the input terminal of the control sub-unit 311, and the second electrode of the third control transistor T6 serves as the output terminal of the control sub-unit 311.

[0108] Specifically, for a single-color sub-pixel column, during testing, the corresponding test data signal is written by controlling a test transistor. The writing sub-unit 312 reuses the structure of the test circuit. Accordingly, the writing sub-unit 312 includes a test transistor, namely the third test transistor T5. Correspondingly, in the control unit 310 connected to the single-color sub-pixel column 100, a control transistor controls the conduction state of the test transistors included in the writing sub-unit 312. Therefore, in the control unit 310 connected to the single-color sub-pixel column, the control sub-unit 311 includes the third control transistor T6. The third control transistor T6 is turned on or off according to the signal on the first control signal line CTRL1 connected to its gate. When on, it transmits the voltage on the second control signal line CTRL2 connected to its input terminal to the gate of the third test transistor T5. The third test transistor T5 is turned on or off according to its gate voltage, thereby controlling whether the fixed voltage V0 is output to the corresponding connected data line 200, thus controlling the lighting state of the connected sub-pixel column 100.

[0109] Based on the above technical solution, optionally, in the control unit 310 connected to the monochrome sub-pixel column, the input terminal of the writing sub-unit 312 is connected to the third test data signal line DW3, which is used to transmit a fixed voltage V0.

[0110] During pre-shipment testing of the display panel, the third test data signal line DW3 can be used to transmit test data voltages for testing the sub-pixels 100 of the monochrome sub-pixel column. After the display panel leaves the factory, the third test data signal line DW3 is left floating and not connected to any signal.

[0111] Optionally, the write sub-unit 312 and the third test data signal line DW3 are included in the test circuit. The test circuit is used to perform screen testing on the display panel, so that the control circuit 300 part is implemented using the structure of the existing test circuit in the display panel, which helps to simplify the structure of the display panel.

[0112] Figure 8 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention, for reference. Figure 8 Optionally, the control terminal of the control unit 310 is connected to the third control signal line CTRL3, the input terminal of the control unit 310 is connected to a fixed voltage V0, and the output terminal of the control unit 310 is connected to at least one data line 200.

[0113] Specifically, the third control signal line CTRL3 is used to transmit control signals to turn the control unit 310 on or off. When the control unit 310 is on, the fixed voltage V0 at the input terminal of the control unit 310 is transmitted to the data line 200 at the output terminal, so that the sub-pixel 100 connected to the data line 200 to which the fixed voltage V0 is written does not emit light.

[0114] Optionally, at least one column of sub-pixels 100 is a dual-color sub-pixel column. The control unit 310 connected to the dual-color sub-pixel column includes a first test transistor T1 and a second test transistor T2. The gates of the first test transistor T1 and the second test transistor T2 are both electrically connected to the control terminal of the control unit 310. The first terminal of the first test transistor T1 serves as the first input terminal A13 of the control unit 310 and is connected to the first test data signal line DW1. The second terminal of the first test transistor T1 is electrically connected to the output terminal of the control unit 310. The first terminal of the second test transistor T2 serves as the second input terminal A14 of the control unit 310 and is connected to the second test data signal line DW2. The second terminal of the first test transistor T1 is electrically connected to the output terminal A2 of the control unit 310. The first test data signal line DW1 and the second test data signal line DW2 are used to transmit a fixed voltage V0. When the signal connected to the control terminal of the control unit 310 is a conduction control signal, the first test transistor T1 and the second test transistor T2 are turned on, transmitting the fixed voltage V0 on the first test data signal line DW1 and the second test data signal line DW2 to the corresponding connected data line 200, so that the sub-pixel 100 connected to the data line 200 does not emit light.

[0115] Optionally, at least one column of sub-pixels 100 is a monochrome sub-pixel column. The control unit 310 connected to the monochrome sub-pixel column includes a third test transistor T5. The gate of the third test transistor T5 serves as the control terminal of the control unit 310. The first terminal of the third test transistor T5 serves as the input terminal of the control unit 310, and the input terminal of the control unit 310 is connected to the third test data signal line DW3. The second terminal of the third test transistor T5 serves as the output terminal of the control unit 310. The third test data signal line DW3 is used to transmit a fixed voltage V0. When the signal connected to the control terminal of the control unit 310 is a conduction control signal, the third test transistor T5 is turned on, transmitting the fixed voltage V0 on the third test data signal line DW3 to the corresponding connected data line 200, so that the sub-pixel 100 connected to the data line 200 does not emit light.

[0116] Optionally, the control unit 310, the first test data signal line DW1, the second test data signal line DW2, and the third test data signal line DW3 are included in the test circuit; the test circuit is used to perform screen testing on the display panel. In this embodiment, the control unit 310 can be implemented using the structure of the test circuit, further simplifying the structure of the display panel.

[0117] This invention also provides a driving method for a display panel, the driving method for the display panel including:

[0118] When the area where the sub-pixel connected to the control unit is not displayed, the control unit transmits the fixed voltage at its input terminal to the corresponding data line at the output terminal so that the corresponding sub-pixel is written with the same fixed voltage and does not emit light.

[0119] The driving method for the display panel in this embodiment is used to drive the display panel of any of the above embodiments of the present invention, and has the beneficial effects of the display panel of any of the above embodiments of the present invention.

[0120] Optionally, the display panel includes a display area and a non-display area adjacent to the display area; the display area includes an emitting area and a non-emitting area, and the non-display area includes a control circuit area for setting control circuits, with the control circuit area and the non-emitting area corresponding one-to-one.

[0121] Figure 9 This is a flowchart of a display panel driving method provided in an embodiment of the present invention, see reference. Figure 9 The driving method includes:

[0122] Step 810: In power-saving mode, the control unit transmits the fixed voltage at its input terminal to the corresponding data line at the output terminal so that the sub-pixels in the non-light-emitting area do not emit light.

[0123] In power-saving mode, the control unit transmits a fixed voltage from its input terminal to the corresponding data line at the output terminal, so that the sub-pixels in the non-light-emitting area do not emit light, thus achieving the effect of saving power consumption.

[0124] Step 820: In normal display mode, the input and output terminals of the control unit are turned off, and the data line is connected to the data voltage output terminal of the driver chip so that at least some sub-pixels in the non-light-emitting area emit light.

[0125] By shutting off the input and output terminals of the control unit in normal display mode and connecting the data line to the data voltage output terminal of the driver chip, at least some sub-pixels in the non-light-emitting area can be made to emit light, thus enabling the normal display function of the display panel.

[0126] Optionally, in power-saving mode, there is no output at the control data voltage output terminal to further save power consumption.

[0127] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, It includes sub-pixels arranged in an array, multiple data lines, and control circuitry, with each data line connecting at least one column of the sub-pixels; The control circuit includes multiple control units, the input terminals of which are connected to a fixed voltage, and the output terminals of which are connected to at least one of the data lines. The control unit, under the control of an access control signal, transmits a fixed voltage from its input terminal to the corresponding data line at its output terminal when the area where the sub-pixel it is connected to is not displayed, so that the corresponding sub-pixel is written with the fixed voltage and does not emit light; the display panel includes a display area and a non-display area adjacent to the display area; the display area includes an emitting area and a non-emitting area, the non-emitting area including at least one column of sub-pixels; the non-display area includes a control circuit area, each of the control circuit areas being provided with a control circuit; the emitting area in the display area is the area that needs to be displayed in power-saving mode, and the non-emitting area in the display area is the area that does not need to be displayed in power-saving mode; The control circuit area and the non-light-emitting area are arranged in a one-to-one correspondence, and the control circuit area and the non-light-emitting area correspond along the direction of extension of the data line; The control circuit is connected to the sub-pixel of the non-light-emitting area corresponding to the control circuit area, and the fixed voltage writing is controlled by the control circuit of the control circuit area to control the sub-pixel of the corresponding non-light-emitting area. The driver chip is also used in power-saving mode to control its own data voltage output terminal corresponding to the non-light-emitting area to have no output, and the data voltage output terminal corresponding to the non-light-emitting area to be in a floating state. The control unit includes a control subunit and a write subunit. The control terminal of the control subunit is connected to a first control signal line, the input terminal of the control subunit is connected to a second control signal line, the output terminal of the control subunit is connected to the control terminal of the corresponding write subunit, the input terminal of the write subunit serves as the write terminal of the control unit and is connected to a fixed voltage, and the output terminal of the write subunit serves as the output terminal of the control unit. The first control signal line is used to transmit a control signal that controls the control subunit to be turned on or off, and the second control signal line is used to transmit a turn-on signal that controls the write subunit to be turned on; or... The first control signal line is used to transmit a control signal to control the control subunit to be turned on, and the second control signal line is used to transmit a control signal to control the write subunit to be turned on or off. At least one column of subpixels is a dual-color subpixel column, the dual-color subpixel column including subpixels of two emitting colors; in the control unit connected to the dual-color subpixel column, the control terminal of the control subunit includes a first sub-control terminal and a second sub-control terminal, the input terminal of the control subunit includes a first sub-input terminal and a second sub-input terminal, and the output terminal of the control subunit includes a first sub-output terminal and a second sub-output terminal; wherein, the first sub-control terminal and the second sub-control terminal are both connected to the first control signal line, and the first sub-input terminal and the second sub-input terminal are both connected to the second control signal line; In the control unit connected to the dual-color sub-pixel column, the control terminal of the write sub-unit includes a third sub-control terminal and a fourth sub-control terminal, and the input terminal of the write sub-unit includes a third sub-input terminal and a fourth sub-input terminal; the third sub-control terminal is electrically connected to the first sub-output terminal, and the fourth sub-control terminal is electrically connected to the second sub-output terminal; both the third sub-input terminal and the fourth sub-input terminal are connected to the fixed voltage, and the output terminal of the write sub-unit is connected to a corresponding data line; The third sub-input terminal is connected to the first test data signal line, and the fourth sub-input terminal is connected to the second test data signal line. The first test data signal line and the second test data signal line are used to transmit the fixed voltage. The writing sub-unit, the first test data signal line, and the second test data signal line are included in the test circuit. The test circuit is used to perform screen testing on the display panel.

2. The display panel according to claim 1, characterized in that, The non-luminescent area is located on both sides of the luminescent area.

3. The display panel according to claim 1, characterized in that, The non-display area is also provided with a switching circuit and a driver chip. The switching circuit is used to control whether the data voltage output terminal of the driver chip is output to the data line. The driver chip is used to control the control unit to transmit the fixed voltage at its input terminal to the corresponding data line at its output terminal in power-saving mode, so that the sub-pixel in the non-light-emitting area does not emit light. And for controlling the input and output terminals of the control unit to be turned off and the switching circuit to be turned on in normal display mode, so that the data line is connected to the data voltage output terminal of the driver chip, so that at least a portion of the sub-pixels in the non-light-emitting area emit light.

4. The display panel according to claim 1, characterized in that, The write sub-unit includes a first test transistor and a second test transistor. The gate of the first test transistor serves as the third sub-control terminal, the first electrode of the first test transistor serves as the third sub-input terminal, and the second electrode of the first test transistor is electrically connected to the output terminal of the write sub-unit. The gate of the second test transistor serves as the fourth sub-control terminal, the first electrode of the second test transistor serves as the fourth sub-input terminal, and the second electrode of the first test transistor is electrically connected to the output terminal of the write sub-unit. And / or, the control subunit includes a first control transistor and a second control transistor, wherein the gate of the first control transistor serves as the first sub-control terminal, the first electrode of the first control transistor serves as the first sub-input terminal, and the second electrode of the first control transistor serves as the first sub-output terminal; the gate of the second control transistor serves as the second sub-control terminal, the first electrode of the second control transistor serves as the second sub-input terminal, and the second electrode of the second control transistor serves as the second sub-output terminal.

5. The display panel according to claim 1, characterized in that, Each column of sub-pixels is a two-color sub-pixel column, with every three columns of adjacent sub-pixels forming a repeating unit; the non-display area is also provided with a first test control signal line, a second test control signal line, a third test control signal line, a fourth test control signal line, a fifth test control signal line, and a sixth test control signal line; In the non-light-emitting area, the third sub-control terminal of the write sub-unit connected to the first column of sub-pixels in the repeating unit is connected to the first test control signal line, and the fourth sub-control terminal is connected to the second test control signal line; the third sub-control terminal of the write sub-unit connected to the second column of sub-pixels in the repeating unit is connected to the third test control signal line, and the fourth sub-control terminal is connected to the fourth test control signal line; the third sub-control terminal of the write sub-unit connected to the third column of sub-pixels in the repeating unit is connected to the fifth test control signal line, and the sixth control terminal is connected to the sixth test control signal line. The control circuit of each control circuit area includes 3 control units and n-3 writing sub-units, where n is the number of sub-pixel columns included in the non-light-emitting area corresponding to the control circuit area; the output terminal of each writing sub-unit is connected to a data line; wherein, the output terminals of the three control units are electrically connected one-to-one with the data lines connected to the three columns of sub-pixels in a repeating unit.

6. The display panel according to claim 5, characterized in that, The corresponding test control signal lines of different control circuit areas are connected; the test control signal lines include the first test control signal line, the second test control signal line, the third test control signal line, the fourth test control signal line, the fifth test control signal line, and the sixth test control signal line.

7. The display panel according to claim 5, characterized in that, The non-display area is also provided with a writing sub-unit that corresponds one-to-one with each column of sub-pixels in the light-emitting area. The output terminal of each writing sub-unit is connected to a data line. The writing sub-unit is not connected to the test control signal line. The test control signal line includes the first test control signal line, the second test control signal line, the third test control signal line, the fourth test control signal line, the fifth test control signal line, and the sixth test control signal line.

8. The display panel according to claim 5, characterized in that, The test control signal lines in different control circuit areas are not connected; The test control signal lines include the first test control signal line, the second test control signal line, the third test control signal line, the fourth test control signal line, the fifth test control signal line, and the sixth test control signal line.

9. The display panel according to claim 1, characterized in that, At least one column of subpixels is a monochromatic subpixel column, and the monochromatic subpixel column includes subpixels of one emitting color; In the control unit connected to the monochrome sub-pixel column, the writing sub-unit includes a third test transistor. The gate of the third test transistor serves as the control terminal of the writing sub-unit, the first electrode of the third test transistor serves as the input terminal of the writing sub-unit, and the second electrode of the third test transistor serves as the output terminal of the writing sub-unit. In the control unit connected to the monochrome sub-pixel column, the writing sub-unit includes a third control transistor. The gate of the third control transistor serves as the control terminal of the control sub-unit, the first electrode of the third control transistor serves as the input terminal of the control sub-unit, and the second electrode of the third control transistor serves as the output terminal of the control sub-unit.

10. The display panel according to claim 9, characterized in that, In the control unit connected to the monochrome sub-pixel column, the input terminal of the control sub-unit is connected to a third test data signal line, which is used to transmit the fixed voltage.

11. The display panel according to claim 10, characterized in that, The writing sub-unit and the third test data signal line are included in the test circuit; the test circuit is used to perform screen testing on the display panel.

12. The display panel according to claim 1, characterized in that, The first control signal line is used to transmit a control signal that controls the control subunit to be turned on or off, and the second control signal line is used to transmit a turn-on signal that controls the write subunit to be turned on; the first control signal lines in different control circuit areas are insulated from each other, and the second control signal lines in different control circuit areas are interconnected to form a single signal line; or, The first control signal line is used to transmit a control signal for controlling the control subunit to be turned on, and the second control signal line is used to transmit a control signal for controlling the write subunit to be turned on or off; the first control signal lines in different control circuit areas are interconnected to form a single signal line, and the second control signal lines in different control circuit areas are insulated from each other.

13. The display panel according to claim 1, characterized in that, The control terminal of the control unit is connected to the third control signal line, the input terminal of the control unit is connected to a fixed voltage, and the output terminal of the control unit is connected to at least one of the data lines.

14. The display panel according to claim 13, characterized in that, At least one column of sub-pixels is a two-color sub-pixel column. The control unit connected to the two-color sub-pixel column includes a first test transistor and a second test transistor. The gates of the first test transistor and the second test transistor are both electrically connected to the control terminal of the control unit. The first terminal of the first test transistor serves as the first input terminal of the control unit and is connected to a first test data signal line. The second terminal of the first test transistor is electrically connected to the output terminal of the control unit. The first terminal of the second test transistor serves as the second input terminal of the control unit and is connected to a second test data signal line. The second terminal of the first test transistor is electrically connected to the output terminal of the control unit. The first test data signal line and the second test data signal line are used to transmit the fixed voltage.

15. The display panel according to claim 14, characterized in that, At least one column of sub-pixels is a monochrome sub-pixel column, and the control unit connected to the monochrome sub-pixel column includes a third test transistor. The gate of the third test transistor serves as the control terminal of the control unit. The first electrode of the third test transistor serves as the input terminal of the control unit, and the input terminal of the control unit is connected to a third test data signal line. The second electrode of the third test transistor serves as the output terminal of the control unit. The third test data signal line is used to transmit the fixed voltage.

16. The display panel according to claim 15, characterized in that, The control unit, the first test data signal line, the second test data signal line, and the third test data signal line are included in the test circuit; the test circuit is used to perform screen testing on the display panel.

17. A driving method for a display panel, characterized in that, include: When the area where the sub-pixel connected to the control unit is not displayed, the control unit is controlled to transmit a fixed voltage from its input terminal to the corresponding data line connected to its output terminal, so that the corresponding sub-pixel is written with the fixed voltage and does not emit light. The display panel includes a display area and a non-display area adjacent to the display area; the display area includes a light-emitting area and a non-light-emitting area, and the non-light-emitting area includes at least one column of sub-pixels; the non-display area includes a control circuit area for setting control circuits, and the control circuit area is configured in a one-to-one correspondence with the non-light-emitting area. The control circuit is connected to the sub-pixels of the non-light-emitting area corresponding to the control circuit area, and controls the fixed voltage writing of the sub-pixels of the corresponding non-light-emitting area through the control circuit in the control circuit area; the light-emitting area in the display area is the area that needs to be displayed in power-saving mode, and the non-light-emitting area in the display area is the area that does not need to be displayed in power-saving mode; The driving method further includes: In power-saving mode, the control unit transmits a fixed voltage from its input terminal to the corresponding data line connected to its output terminal, so that the sub-pixel in the non-light-emitting area does not emit light. In normal display mode, the input and output terminals of the control unit are switched off, and the data line is connected to the data voltage output terminal of the driver chip, so that at least a portion of the sub-pixels in the non-light-emitting area emit light. The driver chip is also used in power-saving mode to control its own data voltage output terminal corresponding to the non-light-emitting area to have no output, and the data voltage output terminal corresponding to the non-light-emitting area to be in a floating state. The control unit includes a control subunit and a write subunit. The control terminal of the control subunit is connected to a first control signal line, the input terminal of the control subunit is connected to a second control signal line, the output terminal of the control subunit is connected to the control terminal of the corresponding write subunit, the input terminal of the write subunit serves as the write terminal of the control unit and is connected to a fixed voltage, and the output terminal of the write subunit serves as the output terminal of the control unit. The first control signal line is used to transmit a control signal that controls the control subunit to be turned on or off, and the second control signal line is used to transmit a turn-on signal that controls the write subunit to be turned on; or... The first control signal line is used to transmit a control signal to control the control subunit to be turned on, and the second control signal line is used to transmit a control signal to control the write subunit to be turned on or off. At least one column of subpixels is a dual-color subpixel column, the dual-color subpixel column including subpixels of two emitting colors; in the control unit connected to the dual-color subpixel column, the control terminal of the control subunit includes a first sub-control terminal and a second sub-control terminal, the input terminal of the control subunit includes a first sub-input terminal and a second sub-input terminal, and the output terminal of the control subunit includes a first sub-output terminal and a second sub-output terminal; wherein, the first sub-control terminal and the second sub-control terminal are both connected to the first control signal line, and the first sub-input terminal and the second sub-input terminal are both connected to the second control signal line; In the control unit connected to the dual-color sub-pixel column, the control terminal of the write sub-unit includes a third sub-control terminal and a fourth sub-control terminal, and the input terminal of the write sub-unit includes a third sub-input terminal and a fourth sub-input terminal; the third sub-control terminal is electrically connected to the first sub-output terminal, and the fourth sub-control terminal is electrically connected to the second sub-output terminal; both the third sub-input terminal and the fourth sub-input terminal are connected to the fixed voltage, and the output terminal of the write sub-unit is connected to a corresponding data line; The third sub-input terminal is connected to the first test data signal line, and the fourth sub-input terminal is connected to the second test data signal line. The first test data signal line and the second test data signal line are used to transmit the fixed voltage. The writing sub-unit, the first test data signal line, and the second test data signal line are included in the test circuit. The test circuit is used to perform screen testing on the display panel.

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