Display panel, electronic device, and display calibration method of electronic device

Abstract

The present application discloses a display panel, an electronic device and a display calibration method of the electronic device. The display panel includes: a chip, a first signal transmission line, a detection line, a thin film transistor and a control line. The signal output end of the chip is electrically connected to the input end of the first signal transmission line, the output end of the first signal transmission line is electrically connected to the first end of the thin film transistor, the chip is electrically connected to the control end of the thin film transistor through the control line, and the second end of the thin film transistor is electrically connected to the signal receiving end of the chip through the detection line.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and in particular to a display panel, an electronic device, and a display calibration method of the electronic device. Background Art

[0002] For some existing electronic devices, as the usage time increases, display distortion may occur. For example, for foldable screen electronic devices, as the number of folding increases, the impedance of the conductive wire at the folding position will be higher, which will lead to display distortion. It can be seen that existing electronic devices have display distortion problems. Summary of the invention

[0003] A display panel, an electronic device and a display calibration method of an electronic device provided in the present application can alleviate the problem of display distortion in existing electronic devices.

[0004] In a first aspect, an embodiment of the present application provides a display panel, comprising: a chip, a first signal transmission line, a detection line, a thin film transistor and a control line, wherein a signal output end of the chip is electrically connected to an input end of the first signal transmission line, an output end of the first signal transmission line is electrically connected to a first end of the thin film transistor, the chip is electrically connected to a control end of the thin film transistor through the control line, and a second end of the thin film transistor is electrically connected to a signal receiving end of the chip through the detection line.

[0005] In a second aspect, an embodiment of the present application provides an electronic device, including: the display panel described in the first aspect above.

[0006] In a third aspect, an embodiment of the present application provides a display calibration method of an electronic device, which is applied to the electronic device described in the second aspect, including:

[0007] Sending a test signal to the first signal transmission line based on a signal output terminal of the chip;

[0008] A signal receiving end of the chip receives a first feedback signal input from the detection line;

[0009] generating a target calibration parameter based on the test signal and the first feedback signal;

[0010] The calibration parameters of the display panel are updated to the target calibration parameters.

[0011] In the embodiment of the present application, when the display panel has a display distortion problem, the chip in the display panel can control the control end of the thin film transistor through the control line, so that the thin film transistor conducts the output end of the first signal transmission line and the detection line. In this way, the signal output from the output end of the first signal transmission line can be transmitted back to the signal receiving end of the chip through the detection line. In this way, the chip can determine the loss value of the signal transmitted in the first signal transmission line according to the signal output from the signal output end and the return signal received by the signal receiving end, and then compensate the signal output from the signal output end according to the loss value, thereby avoiding the display distortion problem of the display panel caused by the loss of the display signal in the signal transmission signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is one of the structural schematic diagrams of the display panel provided in the embodiment of the present application;

[0013] Figure 2 It is one of the partial enlarged views of the display panel provided in the embodiment of the present application;

[0014] Figure 3 This is the second partial enlarged view of the display panel provided in the embodiment of the present application;

[0015] Figure 4 This is the second structural schematic diagram of the display panel provided in the embodiment of the present application;

[0016] Figure 5 This is the third partial enlarged view of the display panel provided in the embodiment of the present application;

[0017] Figure 6 yes Figure 5 Sectional view of section AA;

[0018] Figure 7 yes Figure 5 Sectional view of the middle BB section;

[0019] Figure 8 This is the fourth partial enlarged view of the display panel provided in the embodiment of the present application;

[0020] Fig. 9 yes Figure 8 Sectional view of the CC section;

[0021] Fig.10 yes Figure 8 Cross-sectional view of the middle DD section;

[0022] Fig.11 This is the third structural schematic diagram of the display panel provided in the embodiment of the present application;

[0023] Fig.12 yes Fig.11A partial enlarged view of point E in the middle;

[0024] Fig.13 is a schematic diagram of connection between a pixel unit and a first signal transmission line provided in an embodiment of the present application;

[0025] Fig.14 is a flow chart of a display calibration method of an electronic device provided in an embodiment of the present application;

[0026] Fig.15 This is one of the schematic diagrams of pixel points displayed on the display end surface of the display panel provided in the embodiment of the present application;

[0027] Fig.16 This is a second schematic diagram of pixels displayed on the display end surface of the display panel provided in the embodiment of the present application;

[0028] Fig.17 This is the third schematic diagram of pixel points displayed on the display end surface of the display panel provided in the embodiment of the present application. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0030] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0031] The display panel, electronic device and display method provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in combination with the accompanying drawings.

[0032] See also Figures 1 to 13, a display panel provided in an embodiment of the present application, includes: a chip 110, a first signal transmission line 120, a detection line 130, a thin film transistor 140 and a control line 150, the signal output end of the chip 110 is electrically connected to the input end of the first signal transmission line 120, the output end of the first signal transmission line 120 is electrically connected to the first end of the thin film transistor 140, the chip 110 is electrically connected to the control end of the thin film transistor 140 through the control line 150, and the second end of the thin film transistor 140 is electrically connected to the signal receiving end of the chip 110 through the detection line 130.

[0033] It can be understood that after receiving the display signal, the first signal transmission line 120 can transmit the display signal to the pixel unit 160 at each display position of the display panel, and display the content indicated by the display signal through the pixel unit 160. The first signal transmission line 120 can be a Vdata line in the display panel, and the Vdata line is a data signal conductor for each pixel.

[0034] The detection line 130 can use the display signal flowing out of the first signal transmission line 120 as the first feedback signal, and transmit the first feedback signal back to the chip 110. Since the first feedback signal is the signal after the display signal flows through the first signal transmission line 120, when the impedance in the first signal transmission line 120 is large, the display signal will be attenuated to a large extent after flowing through the first signal transmission line 120. In this way, by transmitting the first feedback signal back to the chip 110, the chip 110 can calculate the difference between the display signal and the first feedback signal, thereby determining the loss value of the display signal in the first signal transmission line 120, and compensating the subsequent display signal according to the loss value, so as to avoid the problem of display distortion caused by the loss of the display signal in the first signal transmission line 120.

[0035] In one embodiment of the present application, the chip 110 can obtain the voltage A at the input end of the first signal transmission line 120 during the process of transmitting the display signal to the first signal transmission line 120, and then obtain the voltage B at the output end of the first signal transmission line 120 through the detection line 130, wherein AB is the loss voltage C in the first signal transmission line 120. The chip 110 can perform algorithm superposition compensation on the loss voltage C and the original factory calibration value D of each channel to generate new calibration data E, and update the new calibration data E to write into the calibrator, and the chip 110 subsequently performs signal display according to the new calibration data E.

[0036] When the display panel is applied to a folding screen electronic device, since pixel units 160 need to be arranged at each position of the display area of ​​the display panel, the first signal transmission lines 120 for transmitting display signals need to be arranged at intervals in the entire display area. Since during the folding process of the electronic device, the first signal transmission line 120 passing through the folding position will also be folded, therefore, as the number of folding times of the electronic device increases, the impedance of the first signal transmission line 120 will continue to increase, thereby causing the loss of the display signal in the first signal transmission line 120 to continue to increase, which may cause the display panel to display distorted problems.

[0037] Based on this, the embodiment of the present application calculates the loss value of the display signal in the first signal transmission line 120 and compensates the subsequent display signal according to the loss value to avoid the problem of display distortion caused by the loss of the display signal in the first signal transmission line 120.

[0038] It is understandable that the display distortion problem of the display panel may be caused by the increase in impedance of the first signal transmission line 120. The increase in impedance of the first signal transmission line 120 may be caused by too many bends of the first signal transmission line 120, or by other reasons, for example, the increase in impedance may be caused by aging of the first signal transmission line 120.

[0039] The display panel can calculate the loss value in real time during the display process, and compensate the signal displayed at the next time based on the loss value calculated at the previous time. In addition, the display panel can also calculate the loss value according to the calibration instruction input by the user, generate calibration data of the signal based on the calculated loss value, and update the new calibration data to the calibrator.

[0040] In this embodiment, when the display panel has a display distortion problem, the chip 110 in the display panel can control the control end of the thin film transistor 140 through the control line 150, so that the thin film transistor 140 can conduct the output end of the first signal transmission line 120 and the detection line 130. In this way, the signal output from the output end of the first signal transmission line 120 can be transmitted back to the signal receiving end of the chip 110 through the detection line 130. In this way, the chip 110 can determine the loss value of the signal transmitted in the first signal transmission line 120 according to the signal output from the signal output end and the return signal received by the signal receiving end, and then compensate the signal output from the signal output end according to the loss value, thereby avoiding the display distortion problem of the display panel caused by the loss of the display signal in the signal transmission signal.

[0041] Optionally, see Figure 1The thin film transistor 140 and the chip 110 are respectively close to opposite ends of the display panel, the display panel includes a display area and a non-display area, the first signal transmission line 120 is located in the display area, and the detection line 130, the thin film transistor 140 and the control line 150 are located in the non-display area.

[0042] In this embodiment, the thin film transistor 140 and the chip 110 are respectively close to the opposite ends of the display panel, and the first signal transmission line 120 is located in the display area, and the detection line 130, the thin film transistor 140 and the control line 150 are located in the non-display area. The signal in the first signal transmission line 120 enters the detection line 130 after passing through the entire display area. In this way, after receiving the feedback signal input by the first signal transmission line 120, the chip 110 can determine the signal loss of the first signal transmission line 120 in the entire display area based on the feedback signal, and then compensate the signal of each display position in the display area based on the signal loss, which is beneficial to improve the effect of signal compensation. Placing the detection line 130, the thin film transistor 140 and the control line 150 in the non-display area is also beneficial to reducing the space occupied by the display area and improving the light transmittance of the display area.

[0043] Optionally, the display panel is a bendable display panel, the display panel includes a bending area, the first signal transmission line 120 passes through the bending area, and the thin film transistor 140 and the chip 110 are respectively located on opposite sides of the bending area.

[0044] In this embodiment, since the thin film transistor 140 and the chip 110 are respectively located on opposite sides of the bending zone, the signal in the first signal transmission line 120 enters the detection line 130 after passing through the bending zone. In this way, after receiving the feedback signal input by the first signal transmission line 120, the chip 110 can determine the signal loss at the first signal transmission line 120 based on the feedback signal, and then compensate for the signal in the bending zone based on the signal loss, which is beneficial to improve the effect of signal compensation.

[0045] Optionally, the chip 110 is used to send a test signal to the first signal transmission line 120 through the signal output end in the detection mode, and receive a first feedback signal input by the detection line 130 through the signal receiving end; the chip 110 is also used to calibrate the display signal output by the signal output end based on the first feedback signal in the display mode.

[0046] The display panel may include a detection mode and a display mode. In the detection mode, the thin film transistor 140 is in a closed state to conduct the output end of the first signal transmission line 120 and the detection line 130. At this time, the signal at the output end of the first signal transmission line 120 can enter the detection line 130 through the thin film transistor 140. In the display mode, the thin film transistor 140 is in an open state. At this time, the output end of the first signal transmission line 120 is relatively disconnected from the detection line 130, and the signal at the output end of the first signal transmission line 120 cannot enter the detection line 130.

[0047] Specifically, when the display effect of the display panel is poor, for example, when there is obvious display distortion, the display panel can be controlled to enter the detection mode. At this time, the chip 110 sends the test signal to the first signal transmission line 120. After the test signal flows through the first signal transmission line 120, it enters the detection line 130 through the output end of the first signal transmission line 120, and then flows into the signal receiving end of the chip 110. Among them, the signal flowing out from the output end of the first signal transmission line 120 can be used as the first feedback signal. In this way, the signal can be compared with the relative size of the test signal and the first feedback signal to determine the loss of the test signal in the first feedback signal. And when the display panel is in the display mode, the display signal output from the signal output end is calibrated based on the loss.

[0048] Optionally, the display panel further includes a diode 310 , the second end of the thin film transistor 140 is electrically connected to an anode of the diode 310 , and a cathode of the diode 310 is electrically connected to the detection line 130 .

[0049] See also Figure 1 The display panel may include n first signal transmission lines 120, the first signal transmission lines 120 are arranged along the length direction of the display end surface of the display panel, and the n first signal transmission lines 120 are arranged at equal intervals along the display end surface.

[0050] It can be understood that the output end of the chip 110 is electrically connected to the input ends of the plurality of first signal transmission lines 120 , respectively, and each first signal transmission line 120 is electrically connected to the detection line 130 via a thin film transistor 140 .

[0051] Among them, the diode 310 can be a thin film diode, and the thin film diode is only unidirectionally conductive. Since the second end of the thin film transistor 140 is electrically connected to the anode of the diode 310, and the cathode of the diode 310 is electrically connected to the detection line 130, the signal can be transmitted from the thin film transistor 140 to the detection line 130, but cannot be transmitted from the detection line 130 to the thin film transistor 140.

[0052] In this embodiment, a diode 310 is disposed between the thin film transistor 140 and the detection line 130 . Thus, when the thin film transistor 140 is a non-unidirectional conductive structure, the first feedback signal transmitted to the detection line 130 is transmitted back to a first signal transmission circuit.

[0053] Optionally, see Figure 6 , the display panel includes a substrate and a semiconductor layer 250, a first metal layer and a second metal layer arranged on the substrate, and an insulating layer is provided between the first metal layer and the second metal layer;

[0054] The control terminal of the thin film transistor 140 is located in the first metal layer, and the control line 150 is located in the first metal layer;

[0055] The first end of the thin film transistor 140 is a source electrode, which is located in the second metal layer;

[0056] The second end of the thin film transistor 140 is a drain electrode, which is located in the second metal layer; the first end and the second end of the thin film transistor 140 are connected to the semiconductor layer 250 respectively;

[0057] The first signal transmission line 120 and the detection line 130 are located in the second metal layer.

[0058] In this embodiment, since the first signal transmission line 120 and the detection line 130 are respectively located in the second metal layer, that is, the first signal transmission line 120 and the detection line 130 share the same metal layer, compared with setting metal layers separately for the first signal transmission line 120 and the detection line 130, it is beneficial to reduce the overall volume of the display panel.

[0059] Optionally, the first signal transmission line 120 includes at least two output ends, and the at least two output ends are arranged at intervals along the length direction of the first signal transmission line 120;

[0060] The display panel also includes at least two detection lines 130 and at least two thin film transistors 140, each of the detection lines 130 is connected to the output end of the first signal transmission line 120 through one thin film transistor 140, and the output end of each first signal transmission line 120 is electrically connected to the signal receiving end through the thin film transistor 140 and the detection line 130.

[0061] See also Fig.11 In this embodiment, the first signal transmission line 120 includes at least two output terminals, and each output terminal is electrically connected to the signal receiving terminal through the thin film transistor 140 and the detection line 130. In this way, in the detection mode, the chip 110 can obtain the first feedback signal of the output terminal at different positions of the first signal transmission line 120 based on different detection lines 130, and then compensate the display signal output by the output terminal at different positions of the first signal transmission line 120 according to the first feedback signal at different positions, which is conducive to further improving the compensation effect of the display signal.

[0062] Optionally, the display panel includes a plurality of scan lines arranged along a row direction and a plurality of first signal transmission lines 120 arranged along a column direction, and the plurality of scan lines and the plurality of first signal transmission lines 120 intersect to form a plurality of pixel units 160;

[0063] At least two of the pixel units 160 are provided with the output end of the first signal transmission line 120 , the thin film transistor 140 , and the detection line 130 .

[0064] See also Fig.11 The display panel includes a plurality of pixel units 160, one pixel unit 160 corresponds to one output end, and the input end of the pixel unit 160 is electrically connected to the corresponding output end.

[0065] It can be understood that the display signal output from any output end of the first signal transmission line 120 can be transmitted to the corresponding pixel unit 160 and the corresponding detection line 130. In this way, it can be ensured that the display signal output from the output end can be displayed through the pixel unit 160, and at the same time, it can be ensured that in the detection mode, the display signal output from the output end can be transmitted back to the chip 110 through the corresponding detection line 130.

[0066] In this embodiment, the chip 110 can obtain the first feedback signal sent back by each detection line 130 row by row or column by column, and calculate the compensation value of each row or column based on the first feedback signal sent back by each detection line 130, and compensate the display signal of each row or column based on the calculated compensation value. In this way, the corresponding compensation value can be set in a targeted manner according to the loss amount of different areas of the screen, thereby further improving the compensation effect of the display signal.

[0067] Optionally, in the detection mode, the detection line 130 inputs a first feedback signal to the signal receiving end; in the display mode, the detection line 130 provides an initialization voltage for the pixel unit 160;

[0068] And / or, the control end of the thin film transistor 140 is electrically connected to the scan driving chip or the scan driving circuit 151 .

[0069] Specifically, see Figure 11-Figure 12 , the pixel unit 160 includes an initialization voltage circuit Vinit, and the initialization voltage circuit Vinit is multiplexed as the detection line 130 in the detection mode. In the detection mode, the thin film transistor 140 is closed, and the thin film transistor 140 conducts the initialization voltage circuit Vinit and the output end. At this time, the signal output from the output end can enter the initialization voltage circuit Vinit through the thin film transistor 140, and the signal entering the initialization voltage circuit Vinit is transmitted back to the chip 110 as the first feedback signal, so that the chip 110 can calibrate the display signal output from the corresponding output end.

[0070] Accordingly, in the display mode, the thin film transistor 140 is turned off. At this time, the detection line 130 provides an initialization voltage for the pixel unit 160 so that the pixel unit 160 can normally display the received display signal.

[0071] The scan driver chip may be the driver chip 110 of the scan line, and the scan driver chip is electrically connected to the plurality of scan lines respectively. In one embodiment of the present application, the control end of the thin film transistor 140 may be electrically connected to the scan driver chip to control the conduction state of the thin film transistor 140 based on the scan driver chip.

[0072] Also, see Fig.12In another embodiment of the present disclosure, the control end of the thin film transistor 140 is electrically connected to the scan driving circuit 151, so that the conduction state of the thin film transistor 140 can be controlled by the scan driving circuit 151. The scan driving circuit 151 can be electrically connected to the chip 110, so that the control signal can be output by the chip 110 and driven by the scan driving circuit 151 to control the conduction state of the thin film transistor 140.

[0073] Alternatively, if Figure 3 As shown, the display panel also includes a second signal transmission line 170, the display panel is bent along a bending line, the extension direction of the first signal transmission line 120 intersects with the extension direction of the bending line, the two ends of the second signal transmission line 170 are respectively electrically connected to the first signal transmission line 120, and the two ends of the second signal transmission line 170 are respectively located on both sides of the bending line.

[0074] The first signal transmission line 120 may include a first connection point and a second connection point, the input end of the second signal transmission line 170 is electrically connected to the first connection point, and the output end of the second signal transmission line 170 is electrically connected to the second connection point. When the display panel is applied to a folding screen electronic device, as the number of times the electronic device is folded increases, there may be a risk of fracture at the bending position of the first signal transmission line 120. When the first signal transmission line 120 is fractured, the display signal cannot be received normally from the fracture position to the output end of the first signal transmission line 120, thereby causing the part to fail to display normally.

[0075] Based on this, in the embodiment of the present application, the two ends of the second signal transmission line 170 are connected to the first connection point and the second connection point respectively. Since the bending position of the first signal transmission line 120 is located between the first connection point and the second connection point, when the bending position of the first signal transmission line 120 is broken, the line between the input end of the first signal transmission line 120 and the bending position can normally receive the display signal, and at the same time, when the display signal is transmitted to the first connection point, it can be transmitted to the second connection point through the second signal transmission line 170, so that the display signal transmitted to the second connection point can be transmitted to various positions between the bending position and the output end of the first signal transmission line 120. In this way, it can be ensured that when the bending position of the first signal transmission line 120 is broken, the display panel can still display normally.

[0076] It is understood that each first signal transmission line 120 crossing the bending line can be connected to a second signal transmission line 170. And when the first signal transmission line 120 includes at least two bending positions, each bending position of the first signal transmission line 120 can be connected to a second signal transmission line 170. For example, see Figure 1 Since the electronic device to which the display panel belongs has two folding lines, at this time, the first signal transmission line 120 includes two bending positions. Therefore, a second signal transmission line 170 can be connected to each of the two bending positions of the first signal transmission line 120.

[0077] In this embodiment, the second signal transmission line 170 forms a double line of the first signal transmission line 120. In addition to providing a double line for the signal transmission line, a double line can also be provided for other lines in the electronic device, for example, a double line can be provided for other lines such as a touch screen line and a drive circuit line. For example, see Figure 4 The display panel also includes a first target line 190 and a second target line 200, the second target line 200 forms a double line of the first target line 190, and the first target line 190 can be any one of a touch screen line, a drive circuit line, and a signal transmission line.

[0078] See also Figure 6 In one embodiment of the present application, the display panel further includes a screen cover 210, an optical adhesive layer 220, a touch layer 230, an encapsulation layer 240, a light-emitting layer 180 and a third metal layer. The second signal transmission line 170 is located in the third metal layer. That is, the first signal transmission line and the second signal transmission line have different conductive layers.

[0079] Fig.10 In another embodiment of the present application, the second signal transmission line 170 includes a first segment 172 and a second segment 171, the second segment 171 is located in the first metal layer, and the first segment 172 is located in the second metal layer. That is, the first segment 172 of the second signal transmission line 170 shares a metal layer with the first signal transmission line, and the second segment 171 of the second signal transmission line 170 shares a metal layer with the control line 150. In this way, there is no need to separately set up the third metal layer of the second signal transmission line, which is conducive to reducing the overall volume of the display panel.

[0080] Optionally, the first signal transmission line 120 is located in a first plane, and the second signal transmission is located in a second plane. The first plane and the second plane are respectively parallel to the display end surface of the display panel, and the first plane and the second plane are different planes. The orthographic projection of the first signal transmission line 120 in the second plane is relatively staggered with the position of the second signal transmission line 170.

[0081] See also Figure 3 , the second signal transmission line 170 and the corresponding first signal transmission line 120 are relatively staggered in the direction parallel to the plane where the display end surface is located, and at the same time, the second signal transmission line 170 and the corresponding first signal transmission line 120 are relatively staggered in the direction perpendicular to the display end surface. In this way, during the folding process of the electronic device, the first signal transmission line 120 and the second signal transmission line 170 are subjected to different stress states, thereby avoiding the problem of the first signal transmission line 120 and the second signal transmission line 170 being broken at the same time.

[0082] In addition, the first signal transmission line 120 as the source of the thin film transistor 140 can be made of various metals or metal oxides and other conductive materials, such as titanium Ti, aluminum Al, molybdenum Mo and other metals; metal oxides such as indium tin oxide In2O3, SnO2, etc. The control line 150 and the detection line 130 are respectively made of conductive materials.

[0083] Another embodiment of the present application provides an electronic device, which includes the display panel described in the above embodiment.

[0084] In this implementation, since the electronic device includes the display panel, the electronic device can achieve all the beneficial effects of the display panel, which will not be described again to avoid repetition.

[0085] See also Fig.14 Another embodiment of the present application provides a display calibration method of an electronic device, which is applied to the electronic device described in the above embodiment, including:

[0086] Step S1401: sending a test signal to the first signal transmission line 120 based on the signal output terminal of the chip 110;

[0087] Step S1402, receiving a first feedback signal inputted from the detection line 130 based on the signal receiving end of the chip 110;

[0088] Step S1403, generating a target calibration parameter based on the test signal and the first feedback signal;

[0089] Step S1404: Update the calibration parameters of the display panel to the target calibration parameters.

[0090] The display calibration method provided in this embodiment is a method corresponding to the display panel in the above embodiment, and its specific implementation is the same as that in the above embodiment, and has the same beneficial effects. To avoid repetition, it will not be described again here.

[0091] In this implementation, a test signal is sent to the first signal transmission line 120 based on the signal output end of the chip 110, and a first feedback signal input by the detection line 130 is received based on the signal receiving end. Then, target calibration parameters are generated based on the test signal and the first feedback signal, and the calibration parameters of the display panel are updated to the target calibration parameters. In this way, the display panel can subsequently calibrate the output display signal based on the target calibration parameters.

[0092] Optionally, before the signal output terminal of the chip 110 sends a test signal to the first signal transmission line 120, the method further includes:

[0093] In case of receiving the calibration signal, a first control signal is sent to the thin film transistor 140 based on the control terminal of the chip 110 , wherein the first control signal is used to control the thin film transistor 140 to be closed.

[0094] Specifically, the user may input the calibration signal when the electronic device displays an abnormality. When the electronic device receives the calibration signal, the control terminal of the chip 110 sends a first control signal to the thin film transistor 140 to control the thin film transistor 140 to close. Then, the above steps S1401 to S1404 may be performed based on the chip 110 to complete the calibration process of the display signal.

[0095] Optionally, the test signal includes a voltage at an input end of the first signal transmission line 120, the first feedback signal includes a voltage at an output end of the first signal transmission line 120, and generating a target calibration parameter based on the test signal and the first feedback signal includes:

[0096] Calculating a difference between a voltage at the input terminal and a voltage at the output terminal;

[0097] The initial calibration parameters of the display panel are compensated based on the difference to obtain the target calibration parameters.

[0098] It is understandable that, in the display mode, the chip 110 can use the target calibration parameters to compensate for the desired output display signal. For example, the intensity of the desired output display signal can be amplified by a certain value, wherein the amplified value is the same as the parameter value of the target calibration parameter.

[0099] In this implementation, the loss voltage of the test signal during transmission on the first signal transmission line 120 is calculated, and the target calibration parameter is determined based on the loss voltage, so that the output display signal can be compensated based on the target calibration parameter.

[0100] Optionally, the display panel includes a first pixel unit 290 and a second pixel unit 300 that are adjacently arranged, the first pixel unit 290 and the second pixel unit 300 both include a first sub-pixel 330, a second sub-pixel 340 and a third sub-pixel 350, the colors of the first sub-pixel 330, the second sub-pixel 340 and the third sub-pixel 350 are different from each other, and the first sub-pixel 330, the second sub-pixel 340 and the third sub-pixel 350 are each provided with an output end of the first signal transmission line 120, the thin film transistor 140 and the detection line 130 to respectively adjust the target calibration parameters of the first sub-pixel 330, the second sub-pixel 340 and the third sub-pixel 350;

[0101] The method further comprises:

[0102] When the first sub-pixel 330 in the first pixel unit 290 is in an abnormal display state of a dark state, the display brightness of the first sub-pixel 330 in the second pixel unit 300 is increased by adjusting the target calibration parameter corresponding to the first sub-pixel 330 in the second pixel unit 300;

[0103] and / or

[0104] When the first sub-pixel 330 in the first pixel unit 290 is in an abnormal display state of a dark state, the display brightness of the second sub-pixel 340 and / or the third sub-pixel 350 in the second pixel unit 300 is increased by adjusting the target calibration parameters corresponding to the second sub-pixel 340 and / or the third sub-pixel 350 in the second pixel unit 300;

[0105] and / or

[0106] When the first sub-pixel 330 in the first pixel unit 290 is in an abnormal display state of a dark state, the display brightness of the second sub-pixel 340 and / or the third sub-pixel 350 in the first pixel unit 290 is increased by adjusting the target calibration parameters corresponding to the second sub-pixel 340 and / or the third sub-pixel 350 in the first pixel unit 290.

[0107] The first sub-pixel 330 , the second sub-pixel 340 and the third sub-pixel 350 may be three sub-pixels of R, G and B respectively. That is, each pixel unit 160 is composed of three sub-pixels of R, G and B.

[0108] See also Fig.15 , through reasonable line arrangement, each pixel unit 160 includes a group of adjacent first sub-pixels 330 , second sub-pixels 340 and third sub-pixels 350 .

[0109] See also Figure 16 to Figure 17 In one embodiment of the present application, when the first sub-pixel 330 of the first pixel unit 290 is in an abnormal display state of a dark state, the display brightness of the first sub-pixel 330 in the second pixel unit 300 is increased by adjusting the target calibration parameters corresponding to the first sub-pixel 330 in the second pixel unit 300. At this time, the first sub-pixel 330 in the second pixel unit 300, the second sub-pixel 340 in the first pixel unit 290 and the third sub-pixel 350 are synthesized to form an image to be output by the first pixel unit 290 to ensure normal display even when there are abnormal sub-pixels in the first pixel unit 290.

[0110] In another embodiment of the present application, when the first sub-pixel 330 in the first pixel unit 290 is in an abnormal display state of a dark state, the display brightness of the second sub-pixel 340 and / or the third sub-pixel 350 in the second pixel unit 300 can be increased by adjusting the target calibration parameters corresponding to the second sub-pixel 340 and / or the third sub-pixel 350 in the second pixel unit 300. In this embodiment, the display brightness of the second sub-pixel 340 and / or the third sub-pixel 350 in the second pixel unit 300 adjacent to the first pixel unit 290 is increased to compensate for the first sub-pixel 330 with insufficient brightness in the first pixel unit 290, thereby ensuring that normal display can be achieved even when there is an abnormal sub-pixel in the first pixel unit 290.

[0111] In another embodiment of the present application, when the first sub-pixel 330 in the first pixel unit 290 is in an abnormal display state of a dark state, the display brightness of the second sub-pixel 340 and / or the third sub-pixel 350 in the first pixel unit 290 is increased by adjusting the target calibration parameters corresponding to the second sub-pixel 340 and / or the third sub-pixel 350 in the first pixel unit 290. In this embodiment, the display brightness of the second sub-pixel 340 and / or the third sub-pixel 350 in the first pixel unit 290 is increased to compensate for the first sub-pixel 330 with insufficient brightness in the first pixel unit 290, thereby ensuring that normal display can be achieved even when there is an abnormal sub-pixel in the first pixel unit 290.

[0112] It can be understood that the first sub-pixel 330 can be any one of the three sub-pixels R, G, and B.

[0113] Optionally, when the first sub-pixel 330 in the first pixel unit 290 is in an abnormal display state of a dark state, the display brightness of the first sub-pixel 330 in the second pixel unit 300 is increased by adjusting a target calibration parameter corresponding to the first sub-pixel 330 in the second pixel unit 300, including:

[0114] When the first sub-pixel 330 in the first pixel unit 290 is in an abnormal display state of a dark state, based on the ratio of the intensity value of the second feedback signal to the intensity value of the test signal, the target calibration parameter corresponding to the first sub-pixel 330 in the second pixel unit 300 is adjusted to increase the display brightness of the first sub-pixel 330 in the second pixel unit 300;

[0115] When the first sub-pixel 330 in the first pixel unit 290 is in an abnormal display state of a dark state, the display brightness of the second sub-pixel 340 and / or the third sub-pixel 350 in the second pixel unit 300 is increased by adjusting the target calibration parameters corresponding to the second sub-pixel 340 and / or the third sub-pixel 350 in the second pixel unit 300, including:

[0116] When the first sub-pixel 330 in the first pixel unit 290 is in an abnormal display state of a dark state, based on the ratio of the intensity value of the second feedback signal to the intensity value of the test signal, the target calibration parameter corresponding to the second sub-pixel 340 and / or the third sub-pixel 350 in the second pixel unit 300 is adjusted to increase the display brightness of the second sub-pixel 340 and / or the third sub-pixel 350 in the second pixel unit 300;

[0117] When the first sub-pixel 330 in the first pixel unit 290 is in an abnormal display state of a dark state, the display brightness of the second sub-pixel 340 and / or the third sub-pixel 350 in the first pixel unit 290 is increased by adjusting the target calibration parameters corresponding to the second sub-pixel 340 and / or the third sub-pixel 350 in the first pixel unit 290, including:

[0118] When the first sub-pixel 330 in the first pixel unit 290 is in an abnormal display state of a dark state, based on the ratio of the intensity value of the second feedback signal to the intensity value of the test signal, the target calibration parameter corresponding to the second sub-pixel 340 and / or the third sub-pixel 350 in the first pixel unit 290 is adjusted to increase the display brightness of the second sub-pixel 340 and / or the third sub-pixel 350 in the first pixel unit 290;

[0119] The second feedback signal is a feedback signal sent from the detection line 130 in the first sub-pixel 330 in the first pixel unit 290 to the signal receiving end of the chip 110 .

[0120] Specifically, the abnormal display state of the first sub-pixel 330 in the first pixel unit 290 being in a dark state may be caused by an increase in impedance or a break in the first signal transmission line 120 connected to the first pixel unit 290. Different impedances or different degrees of breakage may cause the first sub-pixel 330 in the first pixel unit 290 to have different display brightness.

[0121] Based on this, in the embodiment of the present application, the ratio of the intensity value of the second feedback signal to the intensity value of the test signal can be determined to determine the magnitude of the impedance in the first signal transmission line 120, or to determine the degree of breakage of the first signal transmission line 120. Further, the degree of enhancement of the brightness of the sub-pixel adjacent to the first sub-pixel 330 in the abnormal display state can be determined according to different impedance magnitudes or different degrees of breakage.

[0122] For example, when the ratio of the strength value of the second feedback signal to the strength value of the test signal is smaller, it means that the degree of fracture is more obvious, or the impedance value is larger, and at this time, the target calibration parameter can be increased. Correspondingly, when the ratio of the strength value of the second feedback signal to the strength value of the test signal is larger, it means that the degree of fracture is milder, or the impedance value is smaller, and at this time, the target calibration parameter can be reduced.

[0123] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0124] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A display panel, characterized in that: include: A chip, a first signal transmission line, a detection line, a thin film transistor and a control line, wherein the signal output end of the chip is electrically connected to the input end of the first signal transmission line, the output end of the first signal transmission line is electrically connected to the first end of the thin film transistor, the chip is electrically connected to the control end of the thin film transistor through the control line, and the second end of the thin film transistor is electrically connected to the signal receiving end of the chip through the detection line; The display panel further includes a second signal transmission line, the display panel is bent along a bending line, an extension direction of the first signal transmission line intersects with an extension direction of the bending line, two ends of the second signal transmission line are respectively electrically connected to the first signal transmission line, and the two ends of the second signal transmission line are respectively located on both sides of the bending line; The first signal transmission line is located in a first plane, and the second signal transmission line is located in a second plane. The first plane and the second plane are respectively parallel to the display end surface of the display panel, and the first plane and the second plane are different planes. The orthographic projection of the first signal transmission line in the second plane is relatively staggered with the position of the second signal transmission line.

2. The display panel according to claim 1, characterized in that: The thin film transistor and the chip are respectively close to opposite ends of the display panel, the display panel includes a display area and a non-display area, the first signal transmission line is located in the display area, and the detection line, the thin film transistor and the control line are located in the non-display area.

3. The display panel according to claim 1, characterized in that: The display panel is a bendable display panel, and the display panel comprises a bending area, the first signal transmission line passes through the bending area, and the thin film transistor and the chip are respectively located at two opposite sides of the bending area.

4. The display panel according to claim 1, characterized in that: The chip is used to send a test signal to the first signal transmission line through the signal output end in the detection mode, and receive a first feedback signal input by the detection line through the signal receiving end; the chip is also used to calibrate the display signal output by the signal output end based on the first feedback signal in the display mode.

5. The display panel according to claim 1, characterized in that: The display panel further includes a diode, the second end of the thin film transistor is electrically connected to an anode of the diode, and a cathode of the diode is electrically connected to the detection line.

6. The display panel according to claim 1, characterized in that: The display panel includes a substrate, and a semiconductor layer, a first metal layer, and a second metal layer disposed on the substrate, wherein an insulating layer is disposed between the first metal layer and the second metal layer; The control terminal of the thin film transistor is located in the first metal layer, and the control line is located in the first metal layer; The first end of the thin film transistor is a source electrode, which is located in the second metal layer; The second end of the thin film transistor is a drain electrode, which is located in the second metal layer; the first end and the second end of the thin film transistor are connected to the semiconductor layer respectively; The first signal transmission line and the detection line are located in the second metal layer.

7. The display panel according to claim 1, characterized in that: The first signal transmission line comprises at least two output ends, and the at least two output ends are arranged at intervals along the length direction of the first signal transmission line; The display panel also includes at least two detection lines and at least two thin film transistors, each of the detection lines is connected to the output end of the first signal transmission line through a thin film transistor, and the output end of each first signal transmission line is electrically connected to the signal receiving end through the thin film transistor and the detection line.

8. The display panel according to claim 1, characterized in that: It includes a plurality of scanning lines arranged along a row direction and a plurality of first signal transmission lines arranged along a column direction, wherein the plurality of scanning lines and the plurality of first signal transmission lines intersect to form a plurality of pixel units; The output end of the first signal transmission line, the thin film transistor and the detection line are arranged in at least two of the pixel units.

9. The display panel according to claim 8, characterized in that: In the detection mode, the detection line inputs a first feedback signal to the signal receiving end; in the display mode, the detection line provides an initialization voltage for the pixel unit; and / or The control end of the thin film transistor is electrically connected to a scan driving chip or a scan driving circuit.

10. An electronic device, characterized in that: include: The display panel according to any one of claims 1 to 9.

11. A display calibration method for an electronic device, applied to the electronic device according to claim 10, characterized in that: include: Sending a test signal to the first signal transmission line based on a signal output terminal of the chip; A signal receiving end of the chip receives a first feedback signal input from the detection line; generating a target calibration parameter based on the test signal and the first feedback signal; The calibration parameters of the display panel are updated to the target calibration parameters.

12. The method according to claim 11, characterized in that Before sending a test signal to the first signal transmission line based on the signal output terminal of the chip, the method further includes: In case of receiving the calibration signal, a first control signal is sent to the thin film transistor based on the control terminal of the chip, wherein the first control signal is used to control the thin film transistor to be closed.

13. The method according to claim 11, characterized in that The test signal includes a voltage at an input end of the first signal transmission line, the first feedback signal includes a voltage at an output end of the first signal transmission line, and generating a target calibration parameter based on the test signal and the first feedback signal includes: Calculating a difference between a voltage at the input terminal and a voltage at the output terminal; The initial calibration parameters of the display panel are compensated based on the difference to obtain the target calibration parameters.

14. The method according to claim 11, characterized in that The display panel comprises a first pixel unit and a second pixel unit arranged adjacent to each other, the first pixel unit and the second pixel unit each comprise a first sub-pixel, a second sub-pixel and a third sub-pixel, the colors of the first sub-pixel, the second sub-pixel and the third sub-pixel are different from each other, and the first sub-pixel, the second sub-pixel and the third sub-pixel each are provided with an output end of the first signal transmission line, the thin film transistor and the detection line to respectively adjust the target calibration parameters of the first sub-pixel, the second sub-pixel and the third sub-pixel respectively; The method further comprises: When the first sub-pixel in the first pixel unit is in an abnormal display state of a dark state, the display brightness of the first sub-pixel in the second pixel unit is increased by adjusting the target calibration parameter corresponding to the first sub-pixel in the second pixel unit; and / or When the first sub-pixel in the first pixel unit is in an abnormal display state of a dark state, the display brightness of the second sub-pixel and / or the third sub-pixel in the second pixel unit is increased by adjusting the target calibration parameters corresponding to the second sub-pixel and / or the third sub-pixel in the second pixel unit; and / or When the first sub-pixel in the first pixel unit is in an abnormal display state of a dark state, the display brightness of the second sub-pixel and / or the third sub-pixel in the first pixel unit is increased by adjusting the target calibration parameters corresponding to the second sub-pixel and / or the third sub-pixel in the first pixel unit.

15. The method according to claim 14, characterized in that When the first sub-pixel in the first pixel unit is in an abnormal display state of a dark state, the display brightness of the first sub-pixel in the second pixel unit is increased by adjusting a target calibration parameter corresponding to the first sub-pixel in the second pixel unit, including: When the first sub-pixel in the first pixel unit is in an abnormal display state of a dark state, based on the ratio of the intensity value of the second feedback signal to the intensity value of the test signal, adjusting the target calibration parameter corresponding to the first sub-pixel in the second pixel unit to increase the display brightness of the first sub-pixel in the second pixel unit; When the first sub-pixel in the first pixel unit is in an abnormal display state of a dark state, the display brightness of the second sub-pixel and / or the third sub-pixel in the second pixel unit is increased by adjusting the target calibration parameters corresponding to the second sub-pixel and / or the third sub-pixel in the second pixel unit, including: When the first sub-pixel in the first pixel unit is in an abnormal display state of a dark state, based on the ratio of the intensity value of the second feedback signal to the intensity value of the test signal, the target calibration parameter corresponding to the second sub-pixel and / or the third sub-pixel in the second pixel unit is adjusted to increase the display brightness of the second sub-pixel and / or the third sub-pixel in the second pixel unit; When the first sub-pixel in the first pixel unit is in an abnormal display state of a dark state, the display brightness of the second sub-pixel and / or the third sub-pixel in the first pixel unit is increased by adjusting the target calibration parameters corresponding to the second sub-pixel and / or the third sub-pixel in the first pixel unit, including: When the first sub-pixel in the first pixel unit is in an abnormal display state of a dark state, based on the ratio of the intensity value of the second feedback signal to the intensity value of the test signal, the target calibration parameter corresponding to the second sub-pixel and / or the third sub-pixel in the first pixel unit is adjusted to increase the display brightness of the second sub-pixel and / or the third sub-pixel in the first pixel unit; The second feedback signal is a feedback signal sent by the detection line in the first sub-pixel in the first pixel unit to the signal receiving end of the chip.

Images