CN113936583A

CN113936583A - Display panel, module and manufacturing method thereof, and initial panel

Info

Publication number: CN113936583A
Application number: CN202111250507.9A
Authority: CN
Inventors: 郭蕾; 刘汉青; 张佳立; 王强; 王晔; 崔军蕊; 张郑欣
Original assignee: BOE Technology Group Co Ltd; Beijing BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Beijing BOE Optoelectronics Technology Co Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-01-14

Abstract

The application discloses a display panel, a module, a manufacturing method of the display panel and the module, and an initial panel, and belongs to the technical field of display. The display panel includes: signal lines and a switch circuit. One end of the signal line is exposed at the edge of the display panel, and the switch circuit is connected with the signal line. The switch circuit is used for connecting the first control circuit and blocking the transmission of the electric signal on the signal wire to one end of the signal wire in the working stage of the display panel under the control of the first control circuit. The problem that the exposed signal line in display panel's border is easily corroded in display panel's use has been solved to this application, and this application is used for display panel.

Description

Display panel, module and manufacturing method thereof, and initial panel

Technical Field

The present disclosure relates to display technologies, and in particular, to a display panel, a module, a method for manufacturing the display panel, and an initial panel.

Background

The display panel is typically cut from an initial panel. The initial panel comprises: the display panel comprises a display panel area and an Electronic Test PAD (ET PAD) area which are adjacent to each other, and the display panel area is connected with the ET PAD through a signal line.

When the initial panel is cut, cutting may be performed at a position between the display panel region and the ET PAD region, resulting in a display panel. In the process of cutting the initial panel, the signal line between the display panel area and the ET PAD area is cut off, and the edge of the display panel obtained by cutting exposes the signal line.

In the use process of the display panel, the exposed signal lines at the edge of the display panel are easy to corrode.

Disclosure of Invention

The application provides a display panel, a module, a manufacturing method thereof and an initial panel, which can solve the problem that the exposed signal line at the edge of the display panel is easy to corrode in the use process of the display panel, and the technical scheme is as follows:

in a first aspect, a display panel is provided, the display panel comprising: the display panel comprises signal lines and a switch circuit, wherein one ends of the signal lines are exposed at the edge of the display panel, and the switch circuit is connected with the signal lines;

the switch circuit is used for connecting a first control circuit and blocking the transmission of the electric signals on the signal lines to one end of the signal lines in the working stage of the display panel under the control of the first control circuit.

Optionally, the display panel comprises a plurality of signal lines;

the switching circuit includes: a plurality of switch units corresponding to the plurality of signal lines one to one;

for each of the switch units and its corresponding signal line: the switch unit is connected with the signal line and is used for being connected with the first control circuit and blocking the transmission of the electric signal on the signal line to one end of the signal line in the working stage under the control of the first control circuit.

Optionally, the switch unit includes a thin film transistor TFT, the plurality of switch units includes at least one group of switch units, each group of switch units includes at least two switch units, and gates of the at least two switch units are connected to a common gate, and the common gate is used to connect the first control circuit.

Optionally, the display panel further comprises: a connecting wire;

the switch units are connected with the connecting lines and are used for being connected with the first control circuit through the connecting lines.

Optionally, the signal line includes: the display panel further comprises a gate driving unit GOA and a data line, wherein the first signal line is connected with the GOA, and the second signal line is connected with the data line.

In a second aspect, a display module is provided, which includes: a first control circuit, and the display panel of any of the first aspect;

the first control circuit is connected with a switch circuit in the display panel, and the first control circuit is used for: and controlling the switch circuit to block the transmission of the electric signal on the signal wire to one end of the signal wire in the working stage of the display panel.

Optionally, the display panel includes a first signal line, a second signal line, a gate driving unit GOA, and a data line;

the first control circuit is a drive Integrated Circuit (IC), the drive IC is connected with the GOA through the first signal line, and the drive IC is connected with the data line through the second signal line.

In a third aspect, there is provided an initial panel comprising: adjacent display panel regions and electronic test panel regions;

the display panel area comprises signal lines and a switch circuit, and the switch circuit is connected with the signal lines;

the electronic test panel area comprises a second control circuit which is connected with the switch circuit and the signal wire; the second control circuit is configured to: and controlling the switch circuit to conduct the transmission of the electric signals on the signal line in the testing stage of the display panel area.

Optionally, the signal line includes: a second signal line, the display panel region further including: a data line, the second control circuit including: a control unit and a data line driving unit;

the control unit is connected with the switch circuit and the data line driving unit; the data line driving unit is connected with the data line through the second signal line;

the control unit is used for: controlling the switch circuit to conduct the transmission of the electric signal on the second signal line in the test stage; and controlling the data line driving unit to supply a test electrical signal to the data line through the second signal line in the test stage.

In a fourth aspect, a method for manufacturing a display module is provided, the method including:

providing the initial panel of any of the designs of the third aspect;

the second control circuit is used for controlling the switch circuit to conduct the transmission of the electric signals on the signal wire in the testing stage of the display panel area;

testing the display panel area through the signal line;

cutting the initial panel to obtain the display panel of any one of the first aspect, wherein the display panel comprises the display panel area in the initial panel;

connecting a switch circuit in the display panel with a first control circuit to obtain the display module set of the second aspect, wherein the first control circuit is used for: and controlling the switch circuit to block the transmission of the electric signal on the signal wire to one end of the signal wire in the working stage of the display panel.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

fig. 5 is a schematic cross-sectional view of a thin film transistor provided in an embodiment of the present application;

fig. 6 is a layout of a region Q in fig. 4 according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of another display module provided in the embodiment of the present application;

fig. 9 is a schematic connection diagram of a first control circuit and a second signal line according to an embodiment of the present disclosure;

FIG. 10 is a schematic diagram of an initial panel according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of another initial panel provided by embodiments of the present application;

FIG. 12 is a schematic structural diagram of another initial panel provided by an embodiment of the present application;

FIG. 13 is a schematic structural diagram of yet another initial panel provided by an embodiment of the present application;

fig. 14 is a flowchart of a method for manufacturing a display module according to an embodiment of the present disclosure;

fig. 15 is a schematic view of an initial panel cut according to an embodiment of the present disclosure.

Detailed Description

To make the principles, technical solutions and advantages of the present application clearer, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

In the display module with a narrow frame, the frame area of the display panel is required to be narrow, and the wires are difficult to arrange in the frame area. At present, in order to be applicable to the display module with a narrow frame, a double side (DBS) panel (an initial panel) is provided, the frame region of the display panel obtained by cutting the DBS panel is narrow in the length direction of the data line, and the difficulty of arrangement of the routing lines in the frame region is low.

Illustratively, the DBS panel includes a display panel region and an electronic test panel region adjacent thereto, and signal lines for connecting the two regions. In the test phase of the display panel, the electronic test panel area is used for testing the display panel area. After the testing stage of the display panel is finished, the worker needs to cut the display panel region and the electronic test panel region to obtain the display panel, and bind an Integrated Circuit (IC) and a Flexible Printed Circuit (FPC) to the display panel. The FPC is located on two sides of the IC, and the FPC and the IC are arranged along the direction of the grid line.

However, during the use of the display panel (such as the reliability test process and the process of using the display panel by the user), one end of the signal line of the display panel is exposed at the edge of the display panel. If there is the signal of telecommunication on the exposed end of this signal line, then this signal of telecommunication can build the electrochemistry environment of easily corroding with the outside steam of the exposed end of signal line jointly, and then the exposed signal line in border of display panel easily corrodes to the corrosion zone territory can extend to display panel's binding region, can lead to display panel to become invalid finally. Therefore, the embodiment of the application provides a new display panel, and in the use process of the display panel, the exposed signal lines at the edge of the display panel are not easy to corrode.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure, and as shown in fig. 1, a display panel 0 includes: the display panel comprises signal lines 01 and a switch circuit 02, wherein one ends of the signal lines 01 are exposed at the edge of the display panel 0, and the switch circuit 02 is connected with the signal lines 01;

the switch circuit 02 is used for connecting a first control circuit (not shown in fig. 1), and under the control of the first control circuit, in the working stage of the display panel 0, the transmission of the electrical signal on the signal line 01 to one end of the signal line 01 is blocked. The electrical signal may be at least one of a direct current electrical signal and an alternating current electrical signal.

It should be noted that, during the working phase of the display panel 0, an electrical signal is transmitted on the signal line 01, for example, a display electrical signal for transmitting to the display area of the display panel 0 is transmitted on the signal line 01, so that the display area displays an image. If the display panel does not include the switch circuit 02, the display electrical signal is transmitted to one end of the signal line exposed at the edge of the display panel, so that one end of the signal line is easily corroded. In the embodiment of the present application, since the display panel includes the switch circuit 02, and the switch circuit 02 can block the transmission of the display electrical signal on the signal line 01 to one end of the signal line 01, the end of the signal line exposed at the edge of the display panel is not easily corroded. When the switch circuit 02 can block the transmission of the display electrical signal on the signal line 01 to one end of the signal line 01, the display electrical signal on the signal line 01 can also be transmitted to the other end of the signal line 01 until the display electrical signal is transmitted to the display area of the display panel 0, so that the display area displays an image.

In summary, in the display panel provided in the embodiment of the present application, the switch circuit can block the transmission of the electrical signal on the signal line to one end of the signal line under the control of the first control circuit, so that the electrical signal does not exist at the one end of the signal line. When no electric signal exists at one end of the signal wire, the probability that the exposed end of the signal wire has an electrochemical environment required by corrosion is lower, and further the exposed signal wire at the edge of the display panel is not easy to corrode.

Alternatively, as shown in fig. 2, the display panel 0 includes a plurality of signal lines 01 (three signal lines 01 are taken as an example in fig. 2); the switching circuit 02 includes: a plurality of switching elements 021 are in one-to-one correspondence with the plurality of signal lines 01 (three switching elements 021 in one-to-one correspondence with three signal lines 01 are exemplified in fig. 2). For each switching cell 021 and its corresponding signal line 01: the switch unit 021 is connected with the signal line 01, and the switch unit 021 is used for connecting with the first control circuit and blocking the electric signal of the signal line 01 from being transmitted to one end of the signal line 01 in the working stage of the display panel under the control of the first control circuit.

Since each signal line 01 of the plurality of signal lines 01 of the display panel 0 has a corresponding switching unit 021, and the switching unit is used for blocking the transmission of the electrical signal on the signal line 01 to one end of the signal line 01. Therefore, the exposed end of each signal line 01 exposed at the edge of the display panel does not have the electrochemical environment required for corrosion, and the plurality of signal lines 01 exposed at the edge of the display panel 0 are not easy to corrode.

Optionally, with continuing reference to fig. 2, the display panel 0 further includes: a connecting wire 03; a plurality of switching units 021 in the switching circuit 02 are connected to the connection line 03, and the switching units 021 are used for connecting the first control circuit through the connection line 03.

Optionally, the display panel 0 may not include the connecting line 03, and the display panel 0 may include a first trace corresponding to each switch unit 021, and each switch unit 021 is connected to the first control circuit through the corresponding first trace.

Compared with the case that the plurality of switch units 021 are connected to the first control circuit through different first wires, when the display panel comprises the connecting wire 03, the design can simplify the circuit and reduce the production difficulty and cost of the display panel.

Optionally, the embodiment of the present application does not limit the type of the signal line 01. The type of the signal line 01 will be described below. Before describing the type of the signal line 01, the basic structure of the display panel is briefly described in the embodiments of the present application.

Illustratively, as shown in fig. 3, the display panel 0 includes a display area, and a bezel area located outside the display area. The display area includes: the pixel unit, many grid lines and many data links that the array was arranged. Each grid line is connected with one row of pixel units, and each data line is connected with one column of pixel units. The frame region has a plurality of Gate On Array (GOA) units connected to the Gate lines in a one-to-one correspondence, and also has the signal lines and a switch circuit (the signal lines and the switch circuit are not shown in fig. 2). The plurality of GOAs may be distributed on two sides of the display area, for example, an odd GOA group (including GOAs connected by gate lines connected by pixels in odd rows) is located on one side (e.g., left side) of the display area, and an even GOA group (including GOAs connected by gate lines connected by pixels in even rows) is located on the other side (e.g., right side) of the display area. Of course, the plurality of GOAs may also be distributed on the same side of the display area, which is not limited in this embodiment of the present application. In addition, the gate lines are driven by one-side GOA (each gate line is driven by one GOA) as an example, and the gate lines may be driven by two-side GOA. At this time, the frame region has two GOAs corresponding to each gate line, and the two GOAs are respectively connected to two ends of the gate line, which is not limited in this embodiment of the application.

In addition to the basic structure of the display panel provided in the embodiment of the present application, the signal line 01 may include at least one of a first signal line and a second signal line. The first signal line is connected with the GOA, and the second signal line is connected with the data line. When the signal line 01 includes a first signal line, the first signal line is not easily corroded; when the signal line 01 includes a second signal line, the second signal line is not easily corroded.

For example, referring to fig. 4, on the basis of fig. 2, the signal line 01 in the frame region of the display panel includes: a first signal line and a second signal line. At this time, neither the first signal line nor the second signal line is easily corroded. The first signal lines are connected to the GOAs, in fig. 4, a portion of the first signal lines are connected to the GOAs in the odd GOA groups, another portion of the first signal lines are connected to the GOAs in the even GOA groups, and the first signal lines are connected to the pixel units of the display region through the GOAs and the gate lines. The second signal line is connected with the data line and is connected to the pixel unit of the display area through the data line. One end of the first signal line and one end of the second signal line both extend to the edge of the display panel.

Alternatively, with continued reference to fig. 4, when the signal lines 01 in the display panel include a first signal line and a second signal line, the switch circuit 02 includes: a switching unit 021 connected in series to each first signal line, and a switching unit 021 connected in series to each second signal line.

Alternatively, the switching circuit 02 includes: at least one of a Thin Film Transistor (TFT) and a Field Effect Transistor (MOSFET). For example, each of the switching cells 021 in the above-described switching circuit 02 is a TFT or a MOSFET. In fig. 4, each switching cell 021 is exemplified by a TFT.

Both the TFT and the MOSFET can block the transmission of direct current signals and alternating current signals to the exposed end of the signal wire. If the switching circuit 02 includes only a diode, the diode can only block the transmission of the dc signal but not the transmission of the ac signal (such as a Clock (CLK) signal), and thus the corrosion protection effect of the circuit is poor. However, the switching circuit 02 in the embodiment of the present application includes at least one of a TFT and a MOSFET, and both the TFT and the MOSFET can block transmission of a dc signal and an ac signal to an exposed end of the signal line, so that the circuit in the embodiment of the present application has a better corrosion protection effect.

In addition, when the switch unit is a TFT or a MOSFET, the switch unit has a small volume, and at this time, the switch unit may be disposed in an area between existing devices in the current frame area. Therefore, when the display panel includes the switch unit, the length of the frame region of the display panel does not increase in the length direction of the data line.

In addition, the display panel provided by the embodiment of the application can be used in a display module with a narrow frame, and at this time, in the length direction of the data lines, the length range of the frame region of the display panel is 2 to 3 millimeters, and in this case, the display panel can be obtained by cutting a DBS panel (an initial panel).

Further, when the switching circuit includes a TFT, and each switching cell 021 in the switching circuit is a TFT, the TFT may divide the signal line into two segments for the TFT connected to the signal line, and a source of the TFT is connected to one segment of the signal line, and a drain of the TFT is connected to the other segment of the signal line. The gate of the TFT may be adapted to be connected to a first control circuit to enable the first control circuit to control the source and drain of the TFT to be turned on or off to turn on the transmission of an electrical signal on a signal line to which the TFT is connected or to turn off the transmission of an electrical signal on the signal line to one end of the signal line.

Exemplarily, fig. 5 is a schematic cross-sectional view of a thin film transistor provided in an embodiment of the present application. As shown in fig. 5, the TFT includes: a gate electrode, an insulating layer, an active layer, a source electrode, and a drain electrode. The active layer, the insulating layer and the grid electrode are sequentially stacked, and the source electrode and the drain electrode are arranged on one side, far away from the insulating layer, of the active layer at intervals.

The grid is used for connecting a first control circuit, and the first control circuit can provide a conducting signal or a blocking signal for the grid. When a gate of the TFT is loaded with a turn-on signal, the active layer turns on the source and the drain, and at this time, an electrical signal on a signal line to which the TFT is connected may be transmitted to one end of the signal line through the TFT; when a blocking signal is applied to the gate of the TFT, the active layer blocks the source and drain electrodes, and at this time, an electrical signal on a signal line to which the TFT is connected cannot be transmitted to one end of the signal line through the TFT. The first control circuit may apply a blocking signal to a gate of the TFT during an operation stage of the display panel to block an electric signal on a signal line on which the TFT is located from being transmitted to one end of the signal line. Alternatively, the level of the conducting signal may be higher than that of the blocking signal, in which case, the conducting signal is also called a high-level signal, and the blocking signal is also called a low-level signal.

In addition, if the first control circuit does not apply a blocking signal to the gate of the TFT during the operation of the display panel (the gate of the TFT is floating), the active layer of the TFT may allow a leakage current between the source and the drain to pass through, and at this time, if the leakage current is transmitted to the exposed end of the signal line, the corrosion phenomenon of the end of the signal line may not be improved. In the embodiment of the present application, during the operation phase of the display panel, the first control circuit applies the blocking signal to the gate of the TFT during the operation phase of the display panel, so that no leakage current is transmitted to one end of the signal line, and one end of the signal line is not easily corroded.

In the embodiment of the present application, each switching unit 021 is used for connecting to a first control circuit. When the switching element 021 is a TFT, the gates of a plurality of TFTs can be connected together to form a common gate, and the common gate is used for connecting the first control circuit (e.g., connecting the first control circuit through a connecting line). Alternatively, the plurality of TFTs are divided into a plurality of groups of TFTs, and the gates of each group of TFTs are connected together to form a common gate, and the common gate is used for connecting the first control circuit (e.g., connecting the first control circuit through a connecting line).

Fig. 6 is a layout of a region Q in fig. 4 according to an embodiment of the present application, fig. 5 is a schematic diagram of a section AA' in fig. 6, and the insulating layer in fig. 5 is not shown in fig. 6. As shown in fig. 6, the gates of the TFTs disposed on the first signal lines connected to the GOAs in the odd-numbered GOA groups are connected together to form the common gate in fig. 6. Further, the connection line 03 (not shown in fig. 6) includes a first connection portion B ', and the first connection portion B' is connected to the common gate. Wherein the first connection B' is used for connecting a first control circuit (not shown in fig. 6).

The shape of the display area of the display panel provided in the embodiment of the present application may be various, and the shape of the display area is taken as a rectangle in the drawings of the embodiment of the present application, optionally, the shape of the display area may also be other shapes, such as a circle, a triangle, and the like. The display panel may be a small-sized display panel, such as a display panel that may be 1.28 inches or 1.35 inches in size.

Based on above-mentioned display panel, this application embodiment provides a display module assembly, exemplarily, fig. 7 is the schematic structure diagram of a display module assembly that this application embodiment provided, as shown in fig. 7, the display module assembly includes: a first control circuit 1 and a display panel 0 (for example, the display panel 0 shown in fig. 1 or fig. 2).

The first control circuit 1 is connected to the switch circuit 02 in the display panel 0, and the first control circuit 1 is configured to: the control switch circuit 02 blocks the transmission of the electrical signal on the signal line 01 to one end of the signal line 01 during the operating phase of the display panel 0.

Alternatively, the display panel 0 includes the first signal line and the second signal line, and for any one of the first signal line and the second signal line, the signal line may be the signal line 01, or may not be the signal line 01, which is not limited in this embodiment of the application.

Alternatively, the first control circuit 1 is an Integrated Circuit (IC), and the IC is connected to the GOA through a first signal line and is further connected to the data line through a second signal line. The driving IC is used for driving the GOA to work through the first signal line and driving the data line to work through the second signal line. When the first control circuit 1 is a driver IC, the driver IC can be used for controlling the switch circuit 02 in a multiplexing manner, and a control circuit for controlling the switch circuit 02 does not need to be separately arranged in the display panel 0, so that the circuit can be simplified, and the production difficulty and the production cost of the display module are reduced. Of course, the first control circuit 1 may be a control circuit other than the driver IC instead of the driver IC, and this embodiment of the present application is not limited thereto.

When the first control circuit is a driving IC, the first control circuit in the display module may control the switch circuit to block the transmission of the electrical signal on the signal line to one end of the signal line during the working stage of the display panel. At this time, the first control circuit may further drive the GOA and the data line to operate through the signal line, so that the display area of the display panel displays an image.

The display module provided by the embodiment of the present application will be briefly described below by way of an example.

For example, fig. 8 is a schematic structural diagram of another display module according to an embodiment of the present application, and as shown in fig. 8, when a display panel in the display module is the display panel shown in fig. 4, the first control circuit 1 may be bound in a frame region of the display panel.

Referring to fig. 8, the first control circuit 1 is connected to the connection line 03 in the display panel 0 to connect each switch cell 021 in the switch circuit 02 through the connection line 03. The first control circuit 1 is a driver IC, the first control circuit 1 is further connected to the GOA through a first signal line, and the driver IC is further connected to the data line through a second signal line.

Further, the first control circuit 1 may be connected to the first signal line through a second trace, and at this time, the display panel provided in this embodiment of the application may further include the second trace. The first control circuit 1 may be directly connected to the second signal line. For example, the first control circuit 1 has a plurality of first pins and a plurality of second pins (the second pins are not shown in fig. 8), and the plurality of first pins are connected to the plurality of second wirings in a one-to-one correspondence such that each of the first pins is connected to one of the first signal lines through a corresponding wiring. As shown in fig. 9, the plurality of second pins are connected to the plurality of second signal lines in a one-to-one correspondence.

In addition, the display module assembly that this application embodiment provided also calls display device, and this display device can be: any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, a wearable device (such as a watch, a bracelet, glasses, etc.), and the like.

The display module provided in the embodiment of the present application may further include other structures, such as an FPC, which are not described herein again in the embodiment of the present application.

Based on the display panel, the embodiment of the application provides an initial panel, and the display panel is obtained by cutting the initial panel.

Exemplarily, fig. 10 is a schematic structural diagram of an initial panel provided in an embodiment of the present application, and as shown in fig. 10, the initial panel includes: adjacent display panel area 2 and electronic test panel area 3.

The display panel region 2 includes signal lines 01 and a switch circuit 02, and the switch circuit 02 is connected to the signal lines 01. The electronic test panel area 3 includes a second control circuit 4, and the second control circuit 4 is connected to both the switch circuit 02 and the signal line 01. The second control circuit 4 is configured to: the control switch circuit 02 turns on the transmission of the electrical signal on the signal line 01 at the test stage of the display panel area 2.

In the embodiment of the present application, the second control circuit 4 is connected to the switch circuit 02. Illustratively, when the display panel region has a structure as shown in fig. 4, the display panel region includes a connection line 03, and the switching circuit 02 includes a plurality of switching cells 021 connected to the connection line 03. At this time, the second control circuit 4 may connect each switching cell 021 in the switching circuit 02 through the connection line 03.

The second control circuit 4 is used for controlling each switch unit 021 in the testing stage of the display panel area 2, and turning on the transmission of the electrical signal on the signal line 01 connected with the switch unit 021. For example, when the switching unit 021 is a TFT, the second control circuit 4 may apply an on signal to each TFT to turn on the source and drain of the TFT, thereby turning on the transmission of an electric signal on the connected signal line 01.

Alternatively, on the basis of fig. 10, fig. 11 is a schematic structural diagram of another initial panel provided in the present application, and as shown in fig. 11, the signal line 01 includes: the display panel region further includes data lines (data lines are not shown in fig. 11) to which the second signal lines are connected. The second control circuit 4 includes: a control unit 41 and a data line driving unit 42. The control unit 41 is connected to both the switching circuit 02 and the data line driving unit 42; the data line driving unit 42 is also connected to the data line through a second signal line. The control unit 41 is configured to: the switch circuit 02 is controlled to conduct the transmission of the power-on signal of the second signal line (signal line 01) in the test stage; and, the data line driving unit 42 is controlled to supply the test electrical signal to the data line through the second signal line in the test stage.

Since the control unit 41 can be used for controlling the switch circuit 02 and the data line driving unit 42 at the same time, the initial panel can control the switch circuit 02 by multiplexing the control unit 41, and the control unit of the switch circuit 02 and the control unit of the data line driving unit 42 do not need to be separately arranged, so that the initial panel can be simplified, and the production cost and difficulty of the initial panel can be reduced.

The initial panel provided by the embodiments of the present application will be briefly described below by way of an example.

For example, fig. 12 is a schematic diagram of an initial panel provided in an embodiment of the present application, and as shown in fig. 12, the display panel region in fig. 12 may have the structure shown in fig. 4. At this time, the initial panel includes: adjacent display panel area 2 and electronic test panel area 3.

The structure of the display panel region 2 may refer to the structure of the display panel in the foregoing embodiments of the display panel, which is not described herein again in this embodiment of the present application.

The electronic test panel area 3 includes: a second control circuit 4, the second control circuit 4 including: a control unit 41, a data line driving unit 42, a first GOA driving unit 43, and a second GOA driving unit 44. The control unit 41 is connected to the switching circuit 02 via a connection 03. For example, when the layout of a part of TFTs in the switch circuit 06 is as shown in fig. 6, the connection line 03 further includes a second connection portion B having one end connected to the common gate and the other end connected to the control unit 41 (not shown in fig. 6) so that the control unit 41 is connected to the TFTs in the switch circuit 06 through the second connection portion B in the connection line 03.

The control unit 41 is further connected to the second signal line through a third trace, and is further connected to the data line driving unit 42 through the second signal line, and the switch circuit is located between the control unit 41 and the data line driving unit 42 (at this time, the display panel region includes the third trace, and the display panel also includes the third trace). It should be noted that the control unit 41 may not be connected to the data line driving unit 42 through the third trace and the second signal line, but the control unit 41 is directly connected to the data line driving unit 42, which is not limited in this embodiment of the application. The data line driving unit 42 is connected to the data line through a second signal line; the first GOA driving unit 43 is connected to the GOAs in the odd GOA group through a first signal line, and the second GOA driving unit 44 is connected to the GOAs in the even GOA group through a first signal line.

The control unit 41 is configured to control the switch circuit 02 to turn on transmission of the electrical signals on the first signal line and the second signal line in the test stage; and, the data line driving unit 42 is controlled to supply the test electrical signal to the data line through the second signal line in the test stage. The data line driving unit 42 is used to provide a test electrical signal to the data line through the second signal line in a test stage. The first GOA driving unit 43 is configured to provide the GOA driving signals to the GOAs of the odd GOA groups through the first signal line during the test phase. The second GOA driving unit 44 is configured to provide the GOA driving signals to the GOAs of the even GOA groups through the first signal line during the test phase.

Further, the data line driving unit 42 includes: a red driving subunit DR, a green driving subunit DG and a blue driving subunit DB. Illustratively, fig. 13 is a schematic structural diagram of an initial panel provided in an embodiment of the present application. As shown in fig. 13, DR, DG, and DB are connected to different data lines through different second signal lines, and the DR-connected data line is connected to a red pixel cell (not shown in fig. 13) in the display region; the data line to which DG is connected to a green pixel cell (not shown in fig. 13) in the display region; the DB-connected data line is connected to a blue pixel cell (not shown in fig. 13) in the display region. In other words, the data line driving unit 42 has driving sub-units corresponding to different colors therein, and the driving sub-units are connected to the pixel units of the corresponding colors thereof through the second signal lines and the data lines. Of course, one data line driving unit 42 may connect all the pixel units.

When the data line driving unit 42 includes: DR, DG, DB, DR for supplying a test electrical signal to a data line connected to the red pixel cell to light the red pixel cell, DG for supplying a test electrical signal to a data line connected to the green pixel cell to light the green pixel cell, and DB for supplying a test electrical signal to a data line connected to the blue pixel cell to light the blue pixel cell. In addition, the data lines connected to the pixel units of the color may be connected together and to the driving sub-unit corresponding to the color, and thus, the number of pins for connecting the data lines to each driving sub-unit in the data line driving unit 42 is small. Of course, the data lines connected to the pixel units of the same color may also be independently connected to the driving units corresponding to the color.

In addition, after the testing stage is finished, the staff member can cut the initial panel to obtain the display panel, and the display panel comprises the display panel area in the initial panel. Afterwards, the staff can bind the first control circuit 1 with the display panel to obtain the display module.

To sum up, in the initial panel provided in the embodiment of the present application, the second control circuit can control the transmission of the electrical signal on the on-signal line of the switch circuit at the test stage of the display panel area. Therefore, the test of the display panel area can be performed.

The embodiment of the application further provides a first control circuit, which is used for controlling the switch circuit to block the transmission of the electric signal on the signal line to one end of the signal line in the working stage of the display panel. Optionally, the first control circuit is further configured to drive the GOA and the data line to operate through the signal line.

The embodiment of the application also provides a second control circuit, which is used for controlling the transmission of the electric signals on the conducting signal line of the switch circuit in the testing stage of the display panel area. Optionally, the second control circuit is further configured to drive the GOA and the data line to operate through the signal line.

An embodiment of the present application provides a method for manufacturing a display module, and exemplarily, fig. 14 is a flowchart of the method for manufacturing a display module provided in the embodiment of the present application. As shown in fig. 14, the method includes:

step 101, providing an initial panel.

The initial panel in step 101 may be any one of the initial panels provided in embodiments of the present application (such as the initial panel shown in fig. 10, 11, 12, or 13).

The initial panel may be an existing panel or a panel obtained by manufacturing. In manufacturing the initial panel, an initial panel having a display panel area and an electronic test panel area may be manufactured. And, in the process of manufacturing the initial panel, a switching circuit may be manufactured in the display panel region to enable the switching circuit to conduct transmission of an electrical signal on a signal line between the display panel region and the electrical test panel region and to block transmission of the electrical signal on the signal line to one end of the signal line.

The switching circuit includes a switching element on each signal line, and the switching element is a TFT, for example. In manufacturing the switching circuit, the gate electrode of each TFT may be formed first. And forming an insulating layer of the TFT on the gate electrode of each TFT, forming an active layer of each TFT on the insulating layer of each TFT, and forming a source electrode and a drain electrode of each TFT on the active layer of each TFT.

Optionally, the plurality of switch units includes at least one group of switch units, each group of switch units includes at least two switch units, and gates of the at least two switch units are connected as a common gate, and the common gate is used for connecting the first control circuit. At this time, in forming the gate electrodes of the respective TFTs, a common gate electrode made up of the gate electrodes of each of the at least one set of switching cells may be formed. The insulating layers of the individual TFTs may also be connected together to constitute a common insulating layer.

In addition, for the TFT connected to the signal line, the TFT may divide the signal line into two sections, and the source of the TFT is connected to one section of the signal line, and the drain of the TFT is connected to the other section of the signal line. The source and drain electrodes in the TFT may be fabricated simultaneously with the signal line.

And 102, controlling the switch circuit to conduct the transmission of the electric signals on the signal line in the testing stage of the display panel area of the initial panel by using the second control circuit.

The second control circuit is connected with the switch circuit and the signal line, and in the testing stage, the second control circuit can send a conducting signal to the switch circuit, so that the transmission of the electric signal on the signal line is conducted.

For example, in the test stage, the control unit in the second control circuit sends a turn-on signal to the gate of the TFT through the connection line, so that the source and the drain of the TFT are turned on, and an electrical signal may be transmitted on the signal line connected to the TFT.

And 103, testing the display panel area through the signal line.

During a test phase of the display panel, the first GOA driving unit and the second GOA driving unit may cooperate to sequentially provide the plurality of GOAs connected to the plurality of rows of gate lines with the GOA driving signals to sequentially scan the plurality of rows of pixels. And the control unit can control the data line driving unit to provide the data lines with test electric signals through the second signal lines in the test stage so as to drive a plurality of rows of pixel units in the display panel area to be sequentially lightened.

And 104, cutting the initial panel to obtain a display panel, wherein the display panel comprises a display panel area in the initial panel.

Illustratively, fig. 15 is a schematic view of an initial panel cutting provided by an embodiment of the present application. As shown in fig. 15, when the initial panel is cut, a cut may be performed along one cutting line between the display panel region and the electronic test panel region in the initial panel to cut the initial panel into a display panel including the display panel region and an electronic test panel including the electronic test panel region.

After the initial panel is cut, the signal line between the display panel area and the electronic test panel area can be cut off, and the edge of the display panel obtained by cutting can expose the signal line. In addition, the second control circuit in the area of the electronic test panel is no longer connected to the signal lines and also no longer to the switching circuit.

Step 105, connecting a switch circuit in the display panel with a first control circuit to obtain a display module, wherein the first control circuit is used for: the control switch circuit blocks the transmission of the electric signal on the signal line to one end of the signal line in the working stage of the display panel.

For example, as shown in fig. 8, the first control circuit 1 may be bound in a frame region of the display panel and connected to the connection line 03 in the display panel 0, so that the first control circuit 1 connects each switching cell 021 in the switching circuit 02 through the connection line 03.

When the first control circuit 1 is a driver IC, when the first control circuit 1 is bound in the frame region of the display panel, the first control circuit 1 is further connected to the connection line, the second signal line, and the second trace for connecting the first signal line.

It should be noted that, the method embodiments provided in the embodiments of the present application can be mutually referred to corresponding apparatus embodiments, and the embodiments of the present application do not limit this. The sequence of the steps of the method embodiments provided in the embodiments of the present application can be appropriately adjusted, and the steps can be correspondingly increased or decreased according to the situation, and any method that can be easily conceived by those skilled in the art within the technical scope disclosed in the present application shall be covered by the protection scope of the present application, and therefore, the details are not repeated.

The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A display panel, comprising: the display panel comprises signal lines and a switch circuit, wherein one ends of the signal lines are exposed at the edge of the display panel, and the switch circuit is connected with the signal lines;

2. The display panel according to claim 1, wherein the display panel comprises a plurality of signal lines;

3. The display panel according to claim 2, wherein the switch unit comprises a Thin Film Transistor (TFT), the plurality of switch units comprises at least one group of switch units, each group of switch units comprises at least two switch units, and the gates of the at least two switch units are connected to form a common gate, and the common gate is used for connecting the first control circuit.

4. The display panel according to claim 2, characterized in that the display panel further comprises: a connecting wire;

5. The display panel according to any one of claims 1 to 4, wherein the signal line includes: the display panel further comprises a gate driving unit GOA and a data line, wherein the first signal line is connected with the GOA, and the second signal line is connected with the data line.

6. The utility model provides a display module assembly, its characterized in that, display module assembly includes: a first control circuit, and the display panel of any one of claims 1 to 5;

7. The display module according to claim 6, wherein the display panel comprises a first signal line, a second signal line, a gate driving unit GOA and a data line;

8. An initial panel, comprising: adjacent display panel regions and electronic test panel regions;

9. The initial panel of claim 8, wherein the signal line comprises: a second signal line, the display panel region further including: a data line, the second control circuit including: a control unit and a data line driving unit;

10. A manufacturing method of a display module is characterized by comprising the following steps:

providing the initial panel of claim 8 or 9;

testing the display panel area through the signal line;

cutting the initial panel to obtain the display panel of any one of claims 1 to 5, the display panel including the display panel region in the initial panel;

connecting the switch circuit in the display panel with a first control circuit to obtain the display module set of claim 6 or 7, wherein the first control circuit is configured to: and controlling the switch circuit to block the transmission of the electric signal on the signal wire to one end of the signal wire in the working stage of the display panel.