Display panel, display device, manufacturing method and control method

Abstract

The present application discloses a display panel, a display device, a manufacturing method and a control method. The display panel includes a display area and a control area, the display area is adjacent to the control area, the display area includes a sensing electrode, a touch electrode, a first wire connected to the driving electrode, a second wire connected to the sensing electrode and a metal coil, the control area includes an integrated chip, the integrated chip includes a display driving module, a touch module and a near-field communication module, the touch module is connected to the first wire and the second wire, and the near-field communication module is connected to the metal coil. The present application integrates the display driving module, the touch module and the near-field communication module on a chip, thereby reducing the chip space occupied and the chip cost, and enables the display panel to have display, touch and NFC functions, so that data can be exchanged between different display panels when they are close to each other.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel, a display device, a manufacturing method and a control method. Background Art

[0002] With the development of wireless communication technology and mobile terminals, the functions of smart electronic devices are becoming more and more abundant. More and more products are integrating Near Field Communication (NFC), which is widely used in the fields of wireless payment, data transmission, etc. However, on the one hand, the operating frequency of NFC is relatively low, which makes the area occupied by NFC relatively large. On the other hand, the design trend of smart electronic devices is becoming thinner and lighter. Therefore, how to realize NFC function in a limited space has become an urgent problem to be solved. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a display panel, a display device, a manufacturing method and a control method.

[0004] The display panel of the embodiment of the present application includes a display area and a control area, the display area is adjacent to the control area, the display area includes sensing electrodes, touch electrodes, first wirings connected to the touch electrodes, second wirings connected to the sensing electrodes and a metal coil, the control area includes an integrated chip, the integrated chip includes a display driving module, a touch module and a near-field communication module, the touch module is connected to the first wiring and the second wiring, and the near-field communication module is connected to the metal coil.

[0005] In some embodiments, the display panel includes a touch layer, the touch layer includes a buffer layer, a first metal layer, a first insulating layer, a second metal layer and a second insulating layer stacked in sequence, the metal coil is located in the first metal layer, and the sensing electrode and the touch electrode are located in the second metal layer.

[0006] In some embodiments, the first routing line and the second routing line are disposed in the same layer on the second metal layer, and partially overlap with the metal coil.

[0007] In some embodiments, the metal coil includes a first coil and a second coil, the second coil surrounds the first coil, the first coil includes a first input end and a second input end, the second coil includes a first output end and a second output end, and the first output end, the first input end, the second input end, and the second output end are connected to the near field communication module in sequence.

[0008] In some embodiments, the area of ​​the coil is between 1000 square millimeters and 1600 square millimeters.

[0009] In certain embodiments, the metal coil is rectangular.

[0010] A display device according to an embodiment of the present application includes the display panel as described in any one of the above items.

[0011] In some embodiments, the display panel is an OLED display panel.

[0012] The manufacturing method implemented in the present application is used for the display panel described in any one of the above embodiments, and the manufacturing method includes:

[0013] Providing a substrate;

[0014] A metal coil, a first routing line and a second routing line are formed on the base substrate, the first routing line and the second routing line are located on the same layer, the metal coil and the first routing line are located on different layers, the first routing line and the second routing line are connected to the touch control module, and the metal coil is connected to the near field communication module.

[0015] The control method of the present application comprises:

[0016] When the sensing signal of the sensing electrode is detected, the near field communication function is turned off and the touch function is turned on; or

[0017] When no sensing signal from the sensing electrode is detected, the near field communication function is turned on and the touch function is turned off.

[0018] In the display panel, display device, manufacturing method and control method of the embodiment of the present application, by integrating the display driving module, the touch control module and the near field communication module into an integrated chip, the integrated chip can realize the display driving, touch control and near field communication functions, so that different display panels can exchange data when they are close to each other. At the same time, the integrated chip can reduce the chip space occupied and reduce the chip cost.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a schematic diagram of the structure of a display panel in the related art.

[0022] Figure 2 It is a partial cross-sectional schematic diagram of a display panel according to an embodiment of the present application.

[0023] Figure 3 It is a schematic diagram of the connection between the metal coil and the near field communication module according to the embodiment of the present application.

[0024] Figure 4 It is a flow chart of the manufacturing method of the implementation mode of the present application.

[0025] Figure 5 It is a flow chart of the control method of the implementation mode of the present application.

[0026] Description of main component symbols:

[0027] Display panel 10, control area 11, display area 12;

[0028] A first wiring 121, a second wiring 122, a metal coil 123, a first winding coil 1231, a first output terminal TX_OUT1, a second output terminal TX_OUT2, a second winding coil 1232, a first input terminal RX_IN1, and a second input terminal RX_IN2;

[0029] Touch electrode Tx, sensing electrode Rx;

[0030] An array substrate 110; a touch layer 120, a buffer layer Buffer, a first metal layer Metal1, a first insulating layer CNT, a second metal layer Metal2, and a second insulating layer OC;

[0031] Display driver module Driver, touch module Touch, near field communication module NFC. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0037] The traditional solution is to integrate display and touch, called TDDI, which does not have the function of near field communication and cannot be used to exchange data when close to each other. With the development of wireless communication technology and mobile terminals, the functions of smart electronic devices are becoming more and more abundant, and more and more products are integrating near field communication (NFC). NFC is widely used in wireless payment, data transmission and other fields. However, on the one hand, the operating frequency of NFC is relatively low, which makes the area occupied by NFC relatively large. On the other hand, the design trend of smart electronic devices is becoming thinner and lighter. Therefore, how to realize the near field communication function in a limited space has become an urgent problem to be solved.

[0038] In view of this, please refer to Figure 1 The present application provides a display device, which includes a display panel 10. The display panel 10 includes a display area 12 and a control area 11, the control area 11 is adjacent to the display area 12, the display area 12 includes a sensing electrode Rx, a touch electrode Tx, a first wire 121 connected to the touch electrode Tx, a second wire 122 connected to the sensing electrode Rx, and a metal coil 123, the control area 11 includes an integrated chip, the integrated chip includes a display driver module Driver, a touch module Touch, and a near field communication module NFC, the touch module Touch is connected to the first wire 121 and the second wire 122, and the near field communication module NFC is connected to the metal coil 123.

[0039] In the display device and display panel 10 of the present application, the display driver module Driver, the touch module Touch and the near field communication module NFC are integrated into an integrated chip, so that the integrated chip can realize the display driver, touch and near field communication functions, so that different display panels 10 can exchange data when they are close to each other. At the same time, the integrated chip can reduce the chip space occupied and reduce the chip cost.

[0040] Specifically, the display device may be an electronic device such as a television, a computer, a mobile phone, a tablet, or a smart wearable device such as a smart watch. For example, in some examples, the display device is a mobile phone, and the display panel 10 refers to the screen of the mobile phone.

[0041] The display device includes a display panel 10 and a circuit board. The display panel 10 may be an AMOLED display panel, which refers to an OLED display panel driven by an active matrix. The circuit board may be a flexible printed circuit board (FPC) or a rigid printed circuit board (PCBA). For example, in the present embodiment, the circuit board may be a flexible printed circuit board. The circuit board is arranged on the display panel 10, and an integrated chip NTDDI IC is arranged on the circuit board. The integrated chip NTDDI IC includes a display driver module Driver, a touch module Touch and a near field communication module NFC. Among them, the display driver module Driver is used to provide a driving signal to the display panel 10 to control the display panel 10 to display an image, the touch module Touch is electrically connected to the display panel 10, and is used to provide a driving signal to the display panel 10 or receive a sensing signal of the display panel 10 to control the display panel 10 to realize a touch function, and the near field communication module NFC is used to realize a short-range wireless communication function.

[0042] The touch module Touch can adopt self-capacitive touch technology, mutual-capacitive touch technology or self-mutual-capacitive integrated touch technology. For example, the present application can adopt self-mutual-capacitive integrated touch technology. It can be understood that self-capacitive touch technology has the characteristics of low power consumption, but can only realize single-point touch, and the touch response speed is slow, while mutual-capacitive touch technology has the characteristics of being able to realize multi-point touch and high touch accuracy, but its power consumption is high. The present application adopts self-mutual-capacitive integrated touch technology to realize both self-capacitive touch and mutual-capacitive touch.

[0043] Please further combine Figure 2 The display panel 10 can be divided into a control area and a display area, and is divided into two areas, a control area 11 and a display area 12. The circuit board is located on the control area 11, and the display panel 10 also includes sensing electrodes Rx, touch electrodes Tx, a first wiring 121, a second wiring 122 and a metal coil 123 located in the display area 12. Among them, multiple sensing electrode Rx arrays are arranged to form multiple rows of sensing electrode rows and multiple touch electrode Tx arrays form multiple columns of touch electrode columns, or multiple sensing electrode Rx arrays form multiple columns of sensing electrode columns and multiple touch electrode Tx arrays form multiple rows of touch electrode rows. The first wiring 121 connects the touch electrodes Tx in each column of touch electrode columns, and the second wiring 122 connects the sensing electrodes Rx in each row of sensing electrode rows, or the first wiring 121 connects the touch electrodes Tx in each row of touch electrode rows, and the second wiring 122 connects the sensing electrodes Rx in each column of sensing electrode columns.

[0044] One end of the first wiring 121 and the second wiring 122 extend toward the control area 11 to connect the touch module Touch located in the control area 11 . The first wiring 121 may be a Tx wiring, and the second wiring 122 may be an Rx wiring. The touch module Touch may transmit a touch signal to the touch electrode Tx through the first wiring 121 , and receive a sensing signal generated by the sensing electrode Rx through the second wiring 122 .

[0045] Please combine Figure 2 and Figure 3 The metal coil 123 is located in the display area 12, and is partially overlapped with part of the first wiring 121 and / or the second wiring 122. The near field communication module NFC can transmit data through the metal coil 123 and other near field communication modules NFC induction. The metal coil 123 may include multiple metal coils 123, and the multiple metal coils 123 are nested, and both ends of each metal winding are connected to the touch module Touch. The specific number of metal coils 123 can be 3, 4, 5, 6 or even more, that is, the specific number of metal coils 123 is not limited.

[0046] For example, in some embodiments, the metal coil 123 includes a first winding coil 1231 and a second winding coil 1232, the second winding coil 1232 surrounds the first winding coil, the first winding coil 1231 includes a first input terminal RX_IN1 and a second input terminal RX_IN2, the second winding coil 1232 includes a first output terminal TX_OUT1 and a second output terminal TX_OUT2, and the first output terminal TX_OUT1, the first input terminal RX_IN1, the second input terminal RX_IN2 and the second output terminal TX_OUT2 are connected to the near field communication module NFC in sequence.

[0047] The metal coil 123 may be in the shape of a ring, rectangle, polygon or other regular or irregular image. That is, the shape of the metal coil 123 may be changed to any shape according to the structural design of the display panel 10. For example, in the present application, the metal coil 123 may be in the shape of a rectangle.

[0048] The area of ​​the metal coil 123 is between 1000 square millimeters and 1600 square millimeters. For example, the panel of the metal coil 123 can be 1000 square millimeters, 1100 square millimeters, 1200 square millimeters, 1300 square millimeters, 1400 square millimeters, 1500 square millimeters or 1600 square millimeters. It can be understood that the NFC chip generally requires an inductance of 1 to 2 μH. If the area of ​​the metal coil 123 is too small, the inductance requirement of the NFC chip cannot be met, and if the area of ​​the metal coil 123 is too large, the inductance requirement of the NFC chip is exceeded.

[0049] Please read further Figure 2The display panel 10 is hierarchically divided into a touch layer 120 and an array substrate 110 according to its components, wherein the touch layer 120 may be located on the light-emitting side of the array substrate 110. The touch layer 120 includes a buffer layer Buffer, a first metal layer Metal1, a first insulating layer CNT, a second metal layer Metal2, and a second insulating layer OC stacked in sequence, the metal coil 123 is located on the first metal layer Metal1, and the sensing electrode Rx and the touch electrode Tx are located on the second metal layer Metal2.

[0050] In some embodiments, the first wiring 121 and the second wiring 122 are disposed in the same layer on the second metal layer Metal2 and partially overlap with the metal coil 123 .

[0051] Specifically, the first metal layer Metal1 also forms a metal bridge, and the first routing line 121 or the second routing line 122 can be connected through the metal bridge. It can be understood that since each first routing line 121 connects a column of touch electrodes, and each second routing line 122 connects a row of sensing electrodes, the first routing line 121 and the second routing line 122 need to be arranged to intersect. Since the first routing line 121 and the second routing line 122 are located in the same layer, the first routing line 121 and the second routing line 122 have an intersection area, and only one routing line is allowed at the intersection, and the other routing line needs to be bypassed by the metal bridge. Therefore, a metal bridge connecting the first routing line 121 or the second routing line 122 is provided in the intersection area between the first routing line 121 and the second routing line 122.

[0052] Please combine Figure 4 The present application also provides a manufacturing method for the display panel 10 described in any one of the above, the manufacturing method comprising:

[0053] 01. Provide a substrate;

[0054] 02. A metal coil and a first routing line and a second routing line are formed on the substrate. The first routing line and the second routing line are located on the same layer. The metal coil and the first routing line are located on different layers. The first routing line and the second routing line are connected to the touch control module, and the metal coil is connected to the near field communication module.

[0055] In this way, the display panel 10 can realize both the touch function and the near field communication function, and the first wiring and the second wiring are located on the same layer, and the metal coil and the first wiring are located on different layers, which avoids the metal coil from occupying additional space of the display panel, and is conducive to realizing the thinness of the display device.

[0056] Please combine Figure 5 The present application also provides a control method for a display panel 10 as described above, the control method comprising:

[0057] 001, detecting the sensing signal of the sensing electrode;

[0058] 002, when the sensing signal of the sensing electrode is detected, the near field communication function is turned off and the touch function is turned on; or

[0059] 003, when no sensing signal from the sensing electrode is detected, the near field communication function is turned on and the touch function is turned off.

[0060] In some embodiments, the display device includes a processor, and the processor is used to implement the above-mentioned control method, or in other words, the processor is used to detect the sensing signal of the sensing electrode, and when the sensing signal of the sensing electrode is detected, turn off the near field communication function and turn on the touch function; or when the sensing signal of the sensing electrode is not detected, turn on the near field communication function and turn off the touch function.

[0061] In the control method of the display panel 10 of the present application, the sensing signal of the sensing electrode is detected to determine whether the display panel is touched. When the sensing signal of the sensing electrode is detected, it means that the display panel is touched, so the near field communication function is turned off and the touch function is turned on. When the sensing signal of the sensing electrode is detected, it means that the display panel is not touched, so the near field communication function can continue to be turned on and the touch function can be turned off. In this way, through the time-sharing control of the touch function and the near field communication function, interference between the metal coil and the touch electrode and the sensing electrode is avoided.

[0062] Of course, in some other embodiments, the display panel may be provided with a near field communication switch, and the near field communication function and the touch function may be switched through the near field communication switch. For example, when the near field communication switch is turned on, the near field communication function is turned on, the touch function is turned off, and when the user touches the display panel, there is no response. When the near field communication switch is turned off, the near field communication function is turned off, the touch function is turned on, and when the user touches the display panel, there is a response.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0064] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A display panel, characterized in that: The display panel includes a display area and a control area, the display area is adjacent to the control area, the display area includes sensing electrodes, touch electrodes, first wires connected to the touch electrodes, second wires connected to the sensing electrodes, and a metal coil, the control area includes an integrated chip, the integrated chip includes a display driving module, a touch module, and a near field communication module, the touch module is connected to the first wire and the second wire, and the near field communication module is connected to the metal coil; The display panel includes a touch layer, the touch layer includes a buffer layer, a first metal layer, a first insulating layer, a second metal layer and a second insulating layer stacked in sequence, the metal coil is located in the first metal layer, and the sensing electrode and the touch electrode are located in the second metal layer; The first routing line and the second routing line are disposed in the same layer on the second metal layer, and partially overlap with the metal coil.

2. The display panel according to claim 1, wherein: The metal coil includes a first winding coil and a second winding coil, the second winding coil surrounds the first winding coil, the first winding coil includes a first input end and a second input end, the second winding coil includes a first output end and a second output end, and the first output end, the first input end, the second input end, and the second output end are connected to the near field communication module in sequence.

3. The display panel according to claim 1, wherein: The area of ​​the metal coil is between 1000 square millimeters and 1600 square millimeters.

4. The display panel according to claim 2, wherein: The metal coil is rectangular.

5. A display device, characterized in that: Comprising the display panel as described in any one of claims 1 to 4.

6. The display device according to claim 5, characterized in that The display panel is an OLED display panel.

7. A manufacturing method for a display panel as claimed in any one of claims 1 to 4, characterized in that: The production method further comprises: Providing a substrate; A metal coil, a first routing line and a second routing line are formed on the base substrate, the first routing line and the second routing line are located on the same layer, the metal coil and the first routing line are located on different layers, the first routing line and the second routing line are connected to the touch control module, and the metal coil is connected to the near field communication module.

8. A control method for a display panel according to any one of claims 1 to 4, characterized in that: The control method comprises: detecting a sensing signal of the sensing electrode; When the sensing signal of the sensing electrode is detected, the near field communication function is turned off and the touch function is turned on; or When no sensing signal from the sensing electrode is detected, the near field communication function is turned on and the touch function is turned off.

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