WO2020093195A1

WO2020093195A1 - Panel and manufacturing method therefor

Info

Publication number: WO2020093195A1
Application number: PCT/CN2018/113957
Authority: WO
Inventors: 邬学斌
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2018-11-05
Filing date: 2018-11-05
Publication date: 2020-05-14
Also published as: CN112740318A

Abstract

A panel (10), comprising a plurality of connection units (11). Each connection unit (11) comprises a first connection line (113), a second connection line (115), and a switching element (117); the switching element (117) is connected between the first connection line (113) and the second connection line (115); the first connection line (113) is provided adjacent to an edge of the panel (10); when the switching element (117) is turned off, the first connection line (113) is electrically disconnected from the second connection line (115). Also provided is a manufacturing method for the panel.

Description

Panel and its manufacturing method

Technical field

The invention relates to the field of display technology, in particular to a panel and a manufacturing method thereof.

Background technique

Existing display panels need to be cut to the required product size through a laser cutting process after the previous manufacturing process is completed. Since the display panel includes a large number of connection wires for electrical connection between the functional devices, and the spacing between adjacent connection wires is only a few ten microns, the adjacent connection wires are likely to cause a short circuit when the display panel is laser cut , Affecting the product yield after cutting.

Summary of the invention

In order to solve the above problems, the embodiments of the present invention disclose a panel capable of avoiding a short circuit of a connecting wire and a manufacturing method thereof.

A panel includes a plurality of connection units, each connection unit includes a first connection line, a second connection line, and a switch, the switch is connected between the first connection line and the second connection line, The first connection line is disposed adjacent to the edge of the panel, and when the switching member is closed, the first connection line is electrically disconnected from the second connection line.

A method for manufacturing a panel includes the following steps:

Provide a prefabricated panel, the prefabricated panel includes a plurality of connection units, each connection unit includes a first connection line, a second connection line and a switch, the switch is connected to the first connection line and the second connection Between the lines, when the switching element is closed, the first connection line and the second connection line in the connection unit corresponding to the switching element are electrically disconnected;

Cutting the prefabricated panel to cut off the first connection lines of the plurality of connection units;

The switching elements that control the plurality of connection units are closed to form the panel.

The panel and the manufacturing method thereof provided by the present invention are provided with a switch element connecting the first connection line and the second connection line in the connection unit, even if the first connection lines of adjacent connection units are electrically connected to each other by laser cutting When they are together, the first connection line and the second connection line in the corresponding connection unit can be electrically disconnected only by closing the switch, to avoid short circuit between adjacent connection units. In this way, the product yield of the panel is improved.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions in the embodiments of the present invention, the drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

1 is a schematic plan view of a panel provided by an embodiment of the present invention;

2 is a schematic plan view of a display device with a panel according to an embodiment of the present invention;

3 is a flowchart of a method for manufacturing a panel provided by an embodiment of the present invention;

Figure 4 is a schematic plan view of a prefabricated panel.

detailed description

The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

Please refer to FIG. 1, which is a schematic plan view of a panel provided by an embodiment of the present invention. The panel 10 includes a plurality of connection units 11, and each connection unit 11 includes a first connection line 113, a second connection line 115, and a switch 117. The switching element 117 is connected between the first connection line 113 and the second connection line 115 to control the connection of the power supply. The first connection line 113 is disposed adjacent to the edge of the panel 10. When the switching element 117 is closed, the first connection line 113 and the second connection line 115 are electrically disconnected.

When the panel is formed, it is necessary to perform laser cutting on the edge of the panel. Since the connecting unit 11 is provided with a switching element 117, even if the first connecting wires 113 of adjacent connecting units 11 are electrically connected together by laser cutting or the like, only The switching element 117 needs to be turned off to electrically disconnect the first connection line 113 and the second connection line 115 in the corresponding connection unit 11, thereby avoiding a short circuit between adjacent connection units 11.

In this embodiment, the panel 10 is a flexible display panel. The prefabricated panel of the flexible display panel needs to be cut by a laser cutting process to form a panel 10 of a required size after the previous manufacturing process is completed. The panel 10 is not limited to a flexible panel, and it may also be a rigid panel; the panel 10 is not limited to a display panel, and the panel 10 may also be other types of panels, such as a touch panel, an array substrate, and so on.

The panel 10 further includes a power circuit 12 and a control line 13 for electrically connecting the switching element 117 and the power circuit 12. The power supply circuit 12 is used to output a level signal to the switching element 117 through the control line 13 to control the opening or closing of the switching element 117. In this embodiment, the number of control wires 13 is one, and the control wires 13 are electrically connected between the power supply circuit 12 and the switching elements 117 of all the connection units 11, so that the switching elements 117 of all the connection units 11 can be controlled in a unified manner . In other embodiments, the number of the control wires 13 may be multiple, and each control wire 13 is electrically connected between the power circuit 12 and the switching element 117 corresponding to a connection unit 11 to individually control each switching element 117 .

When the switching element 117 receives the generated first level signal, the switching element 117 opens and electrically connects the first connection line 113 and the second connection line 115 of the corresponding connection unit 11; when the switching element 117 receives the power circuit 12 generates When the second level signal is reached, the switching element 117 is turned off to disconnect the electrical connection between the first connection line 113 and the second connection line 115 of the corresponding connection unit 11. In some embodiments, the switching element 117 is a high-level on switch, the first level signal is a high-level signal, and the second level signal is a low-level signal. Obviously, in other embodiments, the switching element 117 may also be a low-level conduction switch, the first level signal is a low-level signal, and the second level signal is a high-level signal.

The first connection line 113 of each connection unit 11 is used to be cut in response to the cutting operation. The power supply circuit 12 generates a first level signal before the first connection line 113 is cut, and the first connection line 113 responds to the cutting After the operation is cut off, the second level signal is generated.

In this embodiment, the switching element 117 is a thin film transistor. The switching element 117 may include a gate G1, a source S1, and a drain D1. The source S1 and the drain D1 of each switching element 117 are electrically connected to the first connection line 113 and the second connection line 115, respectively. The corresponding control line 13 is electrically connected, so that the gate G1 of the switching element 117 can receive the level signal received from the power circuit 12 through the control line 13, so that the switching element 117 is turned on or off accordingly. When the switching element 117 is a high-level conduction switch, the switching element 117 is an N-type thin film transistor, and when the switching element 117 is a low level conduction switch, the switching element 117 is a P-type thin film transistor.

In this embodiment, the pitch between the first connection lines 113 of adjacent connection units 11 is about 10-20 microns. Generally, when performing electrical testing, for example, when a prefabricated panel (larger size) is subjected to electrical testing before laser cutting to form the panel 10, the first level signal is sent to the switching element 117, so that the switching element 117 is opened and electrically connected Corresponding to the first connection line 113 and the second connection line 115 of the connection unit 11 to facilitate electrical testing. After the prefabricated panel is laser cut, the first connecting wires 113 of the adjacent connection units 11 are easily electrically connected together due to laser cutting, and the second level signal is sent to the switching element 117, so that the switching element 117 Turn off and electrically disconnect the first connection line 113 and the second connection line 115 to avoid short circuit of the adjacent connection unit 11.

It can be understood that the switching element 117 may also be other types of control switches, as long as the opening and closing of the switching element 117 is achieved to achieve electrical disconnection and electrical connection between the first connection line 113 and the second connection line 115. . For example, it can also be a bipolar junction transistor (Bipolar Junction Transistor, BJT), a field effect transistor, etc.

The panel 10 further includes a functional area 15 and a bonding area 17. The functional area 15 is used to set a first functional device, and the combined area 17 is used to set a second functional device. In this embodiment, the first functional device is a thin film transistor of an array substrate, and the second functional device is a driver chip, and the driver chip is provided in the bonding area 17 by a binding method. A plurality of connection units 11 are arranged on the coupling area 17.

The panel 10 further includes a plurality of coupling terminals 171 which are provided in the coupling area 17. The end of the second connection line 115 of each connection unit 11 away from the switching element 117 is electrically connected to a coupling terminal 171.

Please refer to FIG. 2. The present invention also provides a display device 200. The display device 200 includes the aforementioned panel 10. The display device 200 may be a display or an electronic device such as a mobile phone, a tablet computer, a notebook computer, and a camera with a display screen.

Please refer to FIG. 3, which is a flowchart of a method for manufacturing a panel according to an embodiment of the present invention. The manufacturing method includes the following steps:

Step 301, a prefabricated panel 301 is provided. Please refer to FIG. It is connected between the first connection line 313 and the second connection line 315. When the switching element 317 is closed, the first connection line 313 and the second connection line 315 in the connection unit 31 corresponding to the switching element 317 are electrically disconnected.

In step 302, the switching element 317 is opened, so that the first connection line 313 and the second connection line 315 in the connection unit 31 corresponding to the switching element 317 are electrically connected.

Step 303: Perform an electrical test on the connection unit 31 of the prefabricated panel 301.

Step 304: Laser cutting the prefabricated panel 301 to cut off the first connection lines 313 of the plurality of connection units 11.

In step 305, the switch members 317 of the plurality of connection units 31 are controlled to close to form the panel.

Further, the prefabricated panel 301 further includes a functional area 35, a bonding area 37, and a test area 39. The test area 39 is disposed adjacent to the end of the bonding area 37 away from the functional area 35. The plurality of connection units 31 are arranged in the coupling area 35. The first connection line 313 of the connection unit 31 extends from the bonding area 37 to the test area 39. The test area 39 is used to test the electrical properties of the connection unit 31.

The functional area 35 is used to set the first functional device, and the combined area 37 is used to set the second functional device. In this embodiment, the first functional device is a thin film transistor of an array substrate, and the second functional device is a driver chip, and the driver chip is disposed in the bonding area 37 by a binding method.

The prefabricated panel 301 further includes a plurality of coupling terminals 371, and the coupling terminals 371 are provided in the coupling area 37. The end of the second connection line 315 of each connection unit 31 away from the switching element 317 is electrically connected to a coupling terminal 371.

The prefabricated panel 301 further includes a plurality of test terminals 391, and the test terminals 391 are provided in the test area 39. The end of the first connection line 313 of each connection unit 31 away from the switch element 317 is electrically connected to a test terminal 391.

The electrical test on the connection unit 31 of the prefabricated panel 301 includes: performing an electrical test on the connection unit 31 in the test area 39.

The cutting of the prefabricated panel 301 includes: laser cutting along the boundary between the test area 39 and the bonding area 37 to remove the test area 39, thereby cutting off the first connection lines 313 of the plurality of connection units 31.

The opening of the switching element 317 to electrically connect the first connection line 313 and the second connection line 315 in the connection unit 31 corresponding to the switching element 317 includes: by sending the first level signal to the switching element 317, the switching element 317 Open to electrically connect the first connection line 313 and the second connection line 315. The first level signal is a high level signal.

Turning off the switching element 317 to electrically disconnect the first connection line 313 and the second connection line 315 in the connection unit 31 corresponding to the switching element 317 includes: sending a second level signal to the switching element 317, the switching element 317 turns off and electrically disconnects the first connection line 313 and the second connection line 315 of the corresponding connection unit 31. The second level signal is a low level signal.

The prefabricated panel 301 further includes a power supply circuit 32 and a control line 33 for electrically connecting the switching element 317 and the power supply circuit 32. The power supply circuit 32 is used to output a level signal to the switching device 317 through the control line 33 to control the opening or closing of the switching device 311. In this embodiment, the number of the control wires 13 is one, and the control wires 13 are electrically connected between the power supply circuit 12 and the switching elements 317 of all the connecting units 31, so that the switching elements 317 of all the connecting units 31 can be controlled in a unified manner . In other embodiments, the number of the control wires 33 may be multiple, and each control wire 33 is electrically connected between the power circuit 32 and the switching element 317 corresponding to a connection unit 31 to individually control each switching element 317 .

When the switching element 317 receives the generated first level signal, the switching element 317 opens and electrically connects the first connection line 313 and the second connection line 315 of the corresponding connection unit 31; when the switching element 317 receives the power circuit 32 generates When the second level signal is reached, the switching element 317 is closed to disconnect the electrical connection between the first connection line 313 and the second connection line 315 of the corresponding connection unit 31. In some embodiments, the switching element 317 is a high-level on switch, the first level signal is a high-level signal, and the second level signal is a low-level signal. Obviously, in other embodiments, the switching element 317 may also be a low-level conduction switch, the first level signal is a low-level signal, and the second level signal is a high-level signal.

In this embodiment, the switching element 317 is a thin film transistor. The switching element 317 may include a gate, a source, and a drain. The source and the drain of each switching element 317 are electrically connected to the first connection line 313 and the second connection line 315, respectively, and the gate is electrically connected to the power circuit Thus, the gate of the switching element 317 can receive the level signal from the power supply circuit 32, so that the switching element 317 is turned on or off accordingly. When the switching element 117 is a high-level conduction switch, the switching element 317 is an N-type thin film transistor, and when the switching element 317 is a low level conduction switch, the switching element 317 is a P-type thin film transistor.

In this embodiment, the pitch between the first connection lines 313 of adjacent connection units 31 is about 10-20 microns. It can be understood that the switching element 317 can also be other types of control switches, as long as the opening and closing of the switching element 317 is controlled to achieve electrical disconnection and electrical connection between the first connection line 313 and the second connection line 315. . For example, it can also be a bipolar junction transistor (Bipolar Junction Transistor, BJT), a field effect transistor, etc.

In an embodiment, step 305 may be performed after step 303 and before step 304, that is, a method of manufacturing a panel, including the following steps: providing a prefabricated panel, the prefabricated panel includes a plurality of connection units, and each connection unit includes A first connection line, a second connection line, and a switching element, the switching element is connected between the first connection line and the second connection line, and when the switching element is closed, it is correspondingly connected to the switching element The first connection line in the unit is electrically disconnected from the second connection line; the switch is opened to electrically connect the first connection line and the second connection line in the unit corresponding to the switch; connection to the prefabricated panel The unit performs electrical testing; controls the switching of multiple connection units to close; laser cutting the prefabricated panel to cut off the first connection lines of the multiple connection units to form the panel.

It can be understood that the manufacturing method may omit steps 302 to 303 and step 305. In an embodiment, a method of manufacturing a panel includes the following steps: providing a prefabricated panel, the prefabricated panel includes a plurality of connection units, each connection unit includes a first connection line, a second connection line, and a switch, The switching element is connected between the first connecting line and the second connecting line, and when the switching element is closed, the first connecting line and the second in the connecting unit corresponding to the switching element The connection wire is electrically disconnected; the prefabricated panel is cut to cut off the first connection wires of the plurality of connection units.

The panel and the manufacturing method thereof provided by the present invention are provided with a switch element connecting the first connection line and the second connection line in the connection unit, even if the first connection lines of adjacent connection units are electrically connected to each other by laser cutting When they are together, the first connection line and the second connection line in the corresponding connection unit can be electrically disconnected only by closing the switch, to avoid short circuit between adjacent connection units. In this way, the problem of poor wiring of the panel after cutting is effectively avoided, and the performance of the panel is improved.

The above is a preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements and retouches can be made. These improvements and retouches are also regarded as This is the protection scope of the present invention.

Claims

A panel, characterized in that it includes a plurality of connection units, each connection unit includes a first connection line, a second connection line and a switch, the switch is connected to the first connection line and the second connection Between the lines, the first connection line is disposed adjacent to the edge of the panel, and when the switching member is closed, the first connection line is electrically disconnected from the second connection line.
The panel according to claim 1, wherein the panel further comprises a power supply circuit and a control line for electrically connecting the switching element and the power supply circuit.
The panel according to claim 2, wherein the number of the control lines is plural, and each control line is electrically connected between the power supply circuit and the switching element corresponding to one connection unit.
The panel according to claim 2, wherein the number of the control line is one, and the control line is electrically connected between the power supply circuit and the switching elements of all connection units.
The panel according to claim 2, wherein when the switching element receives the generated first level signal, the switching element is opened to electrically connect the first connection line and the second connection When the switching element receives the second level signal generated by the power circuit, the switching element is closed to disconnect the electrical connection between the first connection line and the second connection line.
The panel according to claim 5, wherein the first connection line of each connection unit is used to be cut in response to a cutting operation, and the power supply circuit generates a first before the first connection line is cut A level signal, and after the first connection line is cut in response to the cutting operation, a second level signal is generated.
The panel according to claim 1, wherein the distance between the first connection lines of adjacent connection units is 10-20 microns.
The panel according to any one of claims 1 to 7, wherein the switching element is a thin film transistor.
The panel according to any one of claims 1 to 7, wherein the panel includes a functional area and a combined area, the functional area is used to set a first functional device, and the combined area is used to set a second In the functional device, the plurality of connection units are arranged in the bonding area.
The panel according to any one of claims 1 to 7, wherein the panel is a flexible display panel.
A method for manufacturing a panel, characterized in that it includes the following steps:

Provide a prefabricated panel, the prefabricated panel includes a plurality of connection units, each connection unit includes a first connection line, a second connection line and a switch, the switch is connected to the first connection line and the second connection Between the lines, when the switching element is closed, the first connection line and the second connection line in the connection unit corresponding to the switching element are electrically disconnected;

The prefabricated panel is cut to cut off the first connection lines of the plurality of connection units.
The manufacturing method according to claim 11, wherein the prefabricated panel includes a test area, a bonding area, and a functional area, and the test area is disposed adjacent to an end of the bonding area away from the functional area, the A plurality of connection units are arranged in the bonding area, and the first connection line extends from the bonding area to the test area,

The cutting of the prefabricated panel includes: laser cutting along the boundary between the test area and the bonding area to remove the test area, thereby cutting off the first connection lines of the plurality of connection units.
The manufacturing method according to claim 12, wherein after the provision of the prefabricated panel and before the cutting of the prefabricated panel, the manufacturing method further comprises the steps of:

Opening the switch of the connection unit, and electrically connecting the first connection line and the second connection line in the connection unit corresponding to the switch;

Perform electrical testing on the connection unit in the test area.
The manufacturing method according to claim 13, wherein the opening the switch of the connection unit to electrically connect the first connection line and the second connection line includes: The device transmits a first level signal, and the switching device is opened to electrically connect the first connection line and the second connection line.
The manufacturing method according to claim 14, wherein the closing of the switching member that controls the plurality of connecting units includes: by sending a second level signal to the switching member, the switching member turns off to power Disconnect the first connection line from the second connection line.