Array substrate, drive method thereof and display device

[0030] Example 1:

[0031] like figure 1 As shown, this embodiment provides an array substrate, which includes: a base, a plurality of signal lines 2, a shorting bar 3, and a switch unit 1; specifically, a plurality of signal lines 2 are arranged on the base; each signal line 2 is connected to The corresponding shorting bar 3 is connected to each signal line 2 with a switch unit 1 ; wherein the switch unit 1 is used to control whether the signal line 2 connected thereto is electrically connected to the shorting bar 3 .

[0032] Since a switch unit 1 is connected to each signal line 2 in this embodiment, and when the switch unit 1 is in a closed state, the signal line 2 connected to the switch unit 1 will be electrically connected to the shorting bar 3, so that the detection The signal is input to the signal line 2 connected to the short-circuit bar 3 through the short-circuit bar 3, so that the pixel unit connected to the signal line 2 is displayed, and the display panel is judged by the display condition of each pixel unit in the display panel. normal. When the switch unit 1 is in an off state, each signal line 2 is no longer short-circuited at this time, so each pixel unit in the display panel can be displayed by applying a corresponding display signal. In this way, the cutting process of cutting the shorting bar 3 with a laser in the prior art is omitted after the display panel is inspected, which not only improves the utilization rate of the display panel, but also saves the laser for cutting the shorting bar 3. , reducing the production cost of manufacturing the display panel.

[0033] Example 2:

[0034] like figure 1 As shown, this embodiment provides an array substrate, which includes: a substrate, a plurality of signal lines 2 , a shorting bar 3 , a switch unit 1 , and a control unit 4 . Among them, a plurality of signal lines 2 are arranged on the substrate; each signal line 2 is connected to its corresponding short-circuit bar 3, and a switch unit 1 is connected to each signal line 2; the control unit 4 communicates with each switch through the control line 6 The unit 1 is connected to control the switch unit 1 to be turned on and off, so as to control whether the signal line 2 connected to the switch unit 1 is electrically connected to the shorting bar 3 .

[0035] Specifically, the control unit 4 applies a turn-on voltage to each switch unit 1 on the same control line 6 to turn on the switch unit 1. At this time, the signal line 2 connected to the switch unit 1 will be electrically connected to the shorting bar 3, so that the detection The signal is input to the signal line 2 connected to the short-circuit bar 3 through the short-circuit bar 3, so that the pixel unit connected to the signal line 2 is displayed, and the display panel is judged by the display condition of each pixel unit in the display panel. Normal; after the detection of the display panel is completed, the control unit 4 applies a turn-off voltage to each switch unit 1 through the control line 6 to turn off the switch unit 1. At this time, each signal line 2 is no longer short-circuited, so the corresponding display signal, so that each pixel unit in the display panel displays.

[0036] Wherein, preferably in this embodiment, the signal line 2 includes: a gate line and a data line. When the signal line 2 is a data line, the shorting bar 3, the control line 6 and the gate line are arranged in the same layer, and the three materials are the same, and they are all composed of gate metal lines; The electrical signal and the detection signal loaded in the shorting bar 3 are all data signals. Similarly, when the signal line 2 is a gate line, the short-circuit bar 3, the control line 6 and the data line are arranged in the same layer, and the three materials are the same, and they are all composed of data metal lines; at the same time, they are loaded on the signal line 2 and the control line 6. The electrical signal in and the detection signal loaded in the shorting bar 3 are both gate signals.

[0037] Hereinafter, the structure of the array substrate of this embodiment will be described by taking the signal line 2 as the data line. The data lines that provide data voltage signals for pixel units displaying the same color are connected to the same shorting bar 3 .

[0038] Preferably, in this embodiment, the array substrate further includes: a detection unit 5 , which is connected to the shorting bar 3 and is used to load a detection signal for the shorting bar 3 . Specifically, after the control unit 4 turns on the switch unit 1, the detection unit 5 will load a detection signal to the short-circuit bar 3, and the detection signal can be conducted to the display panel through the short-circuit bar 3 to detect the display panel; After the detection is completed, the control unit 4 turns off the switch unit 1. At this time, the detection signal loaded by the detection unit 5 on the shorting bar 3 will no longer be conducted to the display panel. pixel unit for display.

[0039] It should be noted that when testing the display panel, due to the different sizes of the display panels, the lengths of the data lines conducting the detection signals are also different. In the process of signal transmission, the detection signal is seriously attenuated, thereby affecting the display of the pixel unit in the display panel, thereby affecting the accuracy of the detection result. Therefore, preferably, at least one of the two ends of the shorting bar 3 is connected to the detection unit 5 . When the size of the display panel is small, that is, the data line conducting the detection signal is short, the detection unit 5 only needs to be connected to one end of the two ends of the shorting bar 3 to provide the display panel with sufficient detection signals, so as to facilitate the Detecting the display panel; when the size of the display panel is large, that is, when the data line conducting the detection signal is long, the detection unit 5 is connected to both ends of the shorting bar 3 to prevent the detection signal from being attenuated due to the long data line. , which affects the display of the pixel units in the display panel and causes the problem of inaccurate detection.

[0040] Wherein, preferably in this embodiment, the switch unit 1 is a switch transistor. Of course, the switch unit 1 is not limited to the switch transistor, which is not limited here.

[0041] It can be seen from this that the array substrate provided in this embodiment includes the switch unit 1. When the display panel composed of the array substrate needs to be detected, the switch unit 1 only needs to be turned on, so that the detection signal can pass through the shorting bar. 3 is input to the display panel to detect the display panel; when the detection of the display panel is completed, just turn off the switch unit 1 to stop loading the detection signal to the display panel, so as to apply the corresponding display signal to the display panel. Each pixel unit in the display panel is displayed. In this way, in the prior art, the cutting process of cutting the shorting bars 3 with a laser after the inspection of the display panel is completed, thereby improving the utilization rate of the display panel; at the same time, in the actual inspection process, only When testing a display panel with a low yield, it is not necessary to test a display panel with a high yield. Therefore, when testing the display panel composed of the array substrate provided in this embodiment, if the display panel is good If the yield is high, the switch unit 1 in the array substrate can be directly disconnected, so as to save the detection process of detecting the display panel with high yield and improve the productivity of the display panel.

[0042] Specifically, in order to make the working principle of the array substrate of this embodiment more clear, the following description will be given in conjunction with the driving method of the array substrate.

[0043] like figure 2 As shown, the driving method of the array substrate in this embodiment includes:

[0044] Detection stage: the switch unit 1 is turned on, so that the data line connected to the switch unit 1 is electrically connected to the shorting bar 3 .

[0045] Specifically, the control unit 4 applies a turn-on voltage of 28V to each switch unit 1 on the same control line 6 to turn on the switch unit 1. At this time, the data line connected to the switch unit 1 will be electrically connected to the shorting bar 3, so that the The detection signal loaded by the detection unit 5 is input to the data line connected to the short-circuit bar 3 through the short-circuit bar 3, so that the pixel unit connected to the data line is displayed, and is displayed by the display condition of each pixel unit in the display panel. Determine whether the display panel is normal. It should be noted that the turn-on voltage applied by the control unit 4 to the switch unit 1 is not limited to 28V, as long as the turn-on voltage applied by the control unit 4 can turn on the switch unit 1 , which is not repeated here.

[0046] Display stage: the switch unit 1 is turned off to disconnect the data line electrically connected to the shorting bar 3 .

[0047] Specifically, after the detection of the display panel is completed, the control unit 4 applies a turn-off voltage of -8V to each switch unit 1 through the control line 6 to turn off the switch unit 1. At this time, the data line connected to the switch unit 1 is also The connection with the shorting bar 3 will be disconnected, and each data line will no longer be shorted, so each pixel unit in the display panel can be displayed by applying a corresponding display signal. It should be noted that the turn-off voltage applied by the control unit 4 to the switch unit 1 is not limited to -8V, as long as the turn-off voltage applied by the control unit 4 can turn off the switch unit 1 , which is not repeated here.

[0048] Example 3:

[0049] This embodiment provides a display device including the array substrate in Embodiment 1 or Embodiment 2. The display device in this embodiment may be any product or component with display function, such as liquid crystal panel, electronic paper, OLED panel, mobile phone, tablet computer, TV, monitor, notebook computer, digital photo frame, navigator, etc.