CN116737008B - Touch display panel and display device - Google Patents
Touch display panel and display device Download PDFInfo
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- CN116737008B CN116737008B CN202310449438.7A CN202310449438A CN116737008B CN 116737008 B CN116737008 B CN 116737008B CN 202310449438 A CN202310449438 A CN 202310449438A CN 116737008 B CN116737008 B CN 116737008B
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 55
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 238000012360 testing method Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 235000016936 Dendrocalamus strictus Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a touch display panel and a display device. The touch display panel comprises a substrate, a driving circuit, a switching circuit, a plurality of touch electrode wires, a plurality of dummy touch electrode wires and a plurality of dummy touch electrode wires, wherein the substrate is provided with a display area and a peripheral area which are adjacently arranged, the peripheral area is provided with a first peripheral area and a second peripheral area which are opposite to the display area, the touch electrode array is arranged on the substrate, the driving circuit is arranged on the first peripheral area, the switching circuit is arranged on the second peripheral area, the touch electrode wires are electrically connected with the driving circuit, the switching circuit and the touch electrode wires, the dummy touch electrode wires are arranged on the display area, and the dummy touch electrode wires are electrically connected with the driving circuit and the switching circuit and are used for providing at least one touch signal for the switching circuit.
Description
Technical Field
The present invention relates to a display panel and a display device using the same, and more particularly, to a touch display panel and a display device suitable for various bang sizes.
Background
With the development of technology, display devices are widely used in many electronic products, such as mobile phones, tablet computers, watches, automobiles, etc.
The same display devices of the same series often differ in size and resolution only in the size of the openings (bans), e.g., IPHONE12 and IPHONE13. During the manufacturing process, some masks are sometimes shared to reduce the cost. The touch switch of the conventional touch display device is generally disposed at one side of the display area adjacent to the opening (bang) in the display device. When manufacturing opening (bang), generally adopt to grind or radium-shine mode to go on, grind or radium-shine in-process probably can cause opening of the circuit between the nearby touch-control switch of opening (bang), and then cause to show unusual.
Therefore, how to effectively prevent the display abnormality caused by the disconnection of the related lines of the touch switch when manufacturing the display devices with different openings (bang) and improve the display quality of the touch display panel and the display device are one of the problems to be solved.
Disclosure of Invention
The embodiment of the invention provides a touch display panel and a display device, which can reduce the width of a peripheral area, avoid disconnection of a circuit between touch switches near an opening and improve display quality.
The touch display panel comprises a substrate, a driving circuit, a switching circuit, a plurality of touch electrode wires, a plurality of dummy touch electrode wires and a plurality of dummy touch electrode wires, wherein the substrate is provided with a display area and a peripheral area which are adjacently arranged, the peripheral area is provided with a first peripheral area and a second peripheral area which are opposite to the display area, the touch electrode array is arranged on the substrate, the driving circuit is arranged in the first peripheral area, the switching circuit is arranged in the second peripheral area, the touch electrode wires are electrically connected with the driving circuit, the switching circuit and one touch electrode, the dummy touch electrode wires are arranged in the display area, and at least one dummy touch electrode wire is electrically connected with the driving circuit and the switching circuit and used for providing at least one touch signal for the switching circuit.
The touch display panel further comprises a control signal line, a first driving signal line and a second driving signal line, wherein the touch signal further comprises a touch control signal, a first touch driving signal and a second touch driving signal, the control signal line is used for transmitting the touch control signal, the first driving signal line is used for transmitting the first touch driving signal, and the second driving signal line is used for transmitting the second touch driving signal.
In the above touch display panel, one of two adjacent touch electrodes in the touch electrode array receives the first touch driving signal, and the other receives the second touch driving signal.
In the touch display panel, the first touch driving signal is different from the second touch driving signal when the touch display panel is in a test stage, and the first touch driving signal is the same as the second touch driving signal when the touch display panel is in a normal use stage.
The touch display panel further comprises a first switch group and a second switch group, the first driving signal line is electrically connected to the first switch group and electrically connected to the first type of touch electrode, the second driving signal line is electrically connected to the second switch group and electrically connected to the second type of touch electrode, and the control signal line is electrically connected to the first switch group and the second switch group.
The touch display panel comprises a first switch group, a second switch group and a control terminal, wherein the first switch group and the second switch group respectively comprise a plurality of switch elements, the switch elements are provided with a first end, a second end and a control terminal, the first driving signal wire is electrically connected to the first end of the switch elements in the first switch group, the second driving signal wire is electrically connected to the first end of the switch elements in the second switch group, and the control signal wire is electrically connected to the control terminal of the switch elements.
In the touch display panel, the touch electrode wire is electrically connected to the second end of the switching element.
In the above touch display panel, the projection of the touch electrode array on the substrate covers the projection of the control signal line.
The touch display panel further comprises a plurality of signal leads, wherein the plurality of signal leads are connected with the driving circuit and are electrically connected with part of the switching elements after extending from the third peripheral area and the fourth peripheral area.
The touch display panel comprises a display area, a control signal line, a first driving signal line and a second driving signal line, wherein the display area is provided with a first side part, a middle part and a second side part, the control signal line, the first driving signal line and the second driving signal line are all arranged on the first side part, the middle part or the second side part, or the control signal line, the first driving signal line and the second driving signal line are arranged on at least two of the first side part, the middle part and the second side part.
The display device according to an embodiment of the invention includes any one of the touch display panels described above.
The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.
Drawings
Fig. 1 is a schematic structural diagram of a touch display panel according to an embodiment of the invention.
Fig. 2 is an enlarged schematic view of the region Q shown in fig. 1.
Fig. 3 is a schematic partial structure of a touch display panel according to an embodiment of the invention.
Fig. 4A is a schematic diagram of a dummy touch electrode line layout according to an embodiment of the invention.
Fig. 4B is a schematic diagram of a dummy touch electrode line layout according to another embodiment of the invention.
Fig. 4C is a schematic diagram of a dummy touch electrode line layout according to another embodiment of the invention.
Wherein, the reference numerals:
100 touch display panel
101 Substrate
102 Touch electrode array
103 Drive circuit
104 Switching circuit
105 Touch electrode wire
106 Dummy touch electrode line
1061 First drive signal line
1062 Second drive signal line
1063 Control signal line
107 Signal lead
108 Opening(s)
AA display area
BA peripheral zone
BA1 first peripheral zone
BA2 second peripheral zone
SW switching element
SW1 first switch element
SW2 second switching element
TP touch electrode
TP1 first touch control driving signal
TP2 second touch control drive signal
TPSW touch control signal
Detailed Description
The structural and operational principles of the present invention are described in detail below with reference to the accompanying drawings:
Fig. 1 is a schematic structural diagram of a touch display panel according to an embodiment of the invention, and fig. 2 is an enlarged schematic diagram of a region Q shown in fig. 1. As shown in fig. 1 and 2, the touch display panel 100 of the present invention includes a substrate 101, a touch electrode array 102, a driving circuit 103, a switching circuit 104, and a touch electrode line 105 (TP trace).
The substrate 101 has a display area AA and a peripheral area BA disposed adjacently, and in one embodiment, the peripheral area BA is disposed at the periphery of the display area AA. The peripheral area BA has a first peripheral area BA1 disposed opposite to the display area AA and a second peripheral area BA2 disposed adjacent to one side of the display area AA, and the second peripheral area BA2 is disposed adjacent to the other side of the display area AA. As shown in fig. 1, the first peripheral area BA1 is disposed at the lower side of the display area AA, and the second peripheral area BA2 is disposed at the upper side of the display area AA. The touch electrode array 102 is disposed on the substrate 101, has a plurality of touch electrodes TP arranged in an array, and is disposed corresponding to the display area AA. The driving circuit 103 is disposed in the first peripheral area BA1, the switching circuit 104 is disposed in the second peripheral area BA2 and electrically connected to the driving circuit 103, the plurality of touch electrode wires 105 are electrically connected to the switching circuit 104, and any one touch electrode wire 105 of the plurality of touch electrode wires 105 is electrically connected to one touch electrode TP of the touch electrode array 102.
The touch display panel 100 of the present invention further has a plurality of dummy touch electrode lines 106 (dummy trace), the plurality of dummy touch electrode lines 106 are disposed in the display area AA, and at least one dummy touch electrode line 106 of the plurality of dummy touch electrode lines 106 is electrically connected to the driving circuit 103 and the switching circuit 104 for providing at least one touch signal to the switching circuit 104. It should be noted that, for convenience of separating the marks from the touch electrode lines 105, the virtual touch electrode lines 106 are shown with dashed lines in fig. 1 and 2.
Specifically, one end of at least one dummy touch electrode line 106 receives at least one touch signal provided by the driving circuit 103 located in the first peripheral area BA1, and then transmits the at least one touch signal to the switching circuit 104 located in the second peripheral area BA2 and electrically connected to the other end of the at least one dummy touch electrode line, and then transmits the at least one touch signal to the corresponding touch electrode TP through the switching circuit 104 and the touch electrode line 105. In an embodiment, the dummy touch electrode line 106 is not connected to each touch electrode TP, and can be connected to a common voltage to reduce the interference between the touch electrodes TP when the dummy touch electrode line does not participate in the transmission of the at least one touch signal.
The touch display panel 100 of the present invention performs at least one touch signal transmission via the dummy touch electrode lines 106 disposed in the display area AA, does not occupy the peripheral area BA, has a short transmission path, is beneficial to reducing the size of the peripheral area BA, and ensures signal transmission efficiency and quality. In addition, the present invention uses a part of the virtual touch electrode lines 106 to perform signal transmission, so as not to affect the aperture ratio, brightness, etc. of the touch display panel 100.
As shown in fig. 1, the dummy touch electrode line 106 includes a first driving signal line 1061, a second driving signal line 1062, and a control signal line 1063. The first driving signal line 1061 is configured to transmit the first touch driving signal TP1 to the switch circuit 104 after receiving the first touch driving signal TP1 from the driving circuit 103, the second driving signal line 1062 is configured to transmit the second touch driving signal TP2 to the switch circuit 104 after receiving the second touch driving signal TP2 from the driving circuit 103, and the control signal line 1063 is configured to transmit the touch control signal TPSW to the switch circuit 104 after receiving the touch control signal TPSW from the driving circuit 103. In the present invention, three dummy touch electrode lines 106 are illustrated as examples, and the three dummy touch electrode lines 106, i.e. the first driving signal line 1061, the second driving signal line 1062, and the control signal line 1063 are electrically connected to the switch circuit 104, which is not a limitation of the present invention.
In the present invention, the switching circuit 104 includes a plurality of switching elements SW, each of which has a first terminal, a second terminal and a control terminal. The first driving signal line 1061 is electrically connected to a first end of the first switching element SW1, and is configured to transmit the first touch driving signal TP1 to the first switching element SW1 after receiving the first touch driving signal TP1 from the driving circuit 103, the second driving signal line 1062 is electrically connected to a first end of the second switching element SW2, and is configured to transmit the second touch driving signal TP2 to the second switching element SW2 after receiving the second touch driving signal TP2 from the driving circuit 103, and the control signal line 1063 is electrically connected to a control end of the switching element SW (SW 1, SW 2), and is configured to transmit the touch control signal TPSW to the switching element SW after receiving the touch control signal TPSW from the driving circuit 103. The touch electrode line 105 is electrically connected to the second terminal of the switching element SW. In the present invention, all the first switching elements SW1 are defined as a first switching group, and all the second switching elements SW2 are defined as a second switching group.
In one embodiment, the touch display panel 100 has an opening region (bang) 108, and the first switch set and the second switch set are disposed corresponding to the opening region (bang) 108. The portion of the display area AA corresponding to the opening area (bang) 108 is defined as a first display area AA1, and the first driving signal line 1061, the second driving signal line 1062, and the control signal line 1063 are located in the first display area AA 1. The first switch set and the second switch set are used for transmitting the at least one touch signal to each touch electrode TP in the first display area AA 1. In this embodiment, since the signal transmission path is additionally provided for the touch electrode TP in the first display area AA1 corresponding to the opening area 108, at least one touch signal is received from the driving circuit 103 via the virtual touch electrode line 106 in the display area AA and transmitted to the corresponding switching element SW and then transmitted to the corresponding touch electrode TP, so that the touch electrode TP in the first display area AA1 can smoothly receive the corresponding signals via the first driving signal line 1061, the second driving signal line 1062, the control signal line 1063, the first switch group and the second switch group. In the process of manufacturing the opening area by adopting a grinding or laser mode, the problem of abnormal display caused by line disconnection of the switch circuit 104 near the opening area 108 is avoided, and the display quality is improved.
Specifically, as shown in fig. 1 and 2, the control ends of the first switching elements SW1 and the second switching elements SW2 are connected to the same signal line, the first ends of the first switching elements SW1 are connected to the same signal line, and the first ends of the second switching elements SW2 are connected to the same signal line, so that the signal line is easily disconnected at the corners at the two ends of the opening 108 during the process of manufacturing the opening by grinding or laser. Because the first display area AA1 corresponding to the opening area 108 in the present invention is provided with a dedicated signal transmission path, even if the signal line is disconnected at the corner, the signal transmission can be still completed through the first driving signal line 1061, the second driving signal line 1062, the control signal line 1063, the first switch group and the second switch group, so as to ensure the display quality.
As shown in fig. 1, the display area AA further includes a second display area AA2 and a third display area AA3 located at two sides of the first display area AA 1. The switch circuit 104 further includes a third switch group, a fourth switch group, a fifth switch group and a sixth switch group, where the third switch group and the fourth switch group are located at one sides of the first switch group and the second switch group, and the fifth switch group and the sixth switch group are located at the other sides of the first switch group and the second switch group, in other words, the third switch group and the fourth switch group are disposed corresponding to the second display area AA2, and the fifth switch group and the sixth switch group are disposed corresponding to the third display area AA3. Further, the third switch group and the fifth switch group each include a plurality of first switch elements SW1, the fourth switch group and the sixth switch group each include a plurality of second switch elements SW2, and the plurality of first switch elements SW1 and the plurality of second switch elements SW2 are connected to the corresponding touch electrodes TP via the corresponding touch electrode lines 105, respectively.
In an embodiment, as shown in fig. 1, the peripheral area BA further has a third peripheral area (located at the left side of the display area AA in this embodiment) and a fourth peripheral area (located at the right side of the display area AA in this embodiment) disposed opposite to the display area AA, and the touch display panel 100 further has a plurality of signal leads 107, where the plurality of signal leads 107 extend from the peripheral area (third peripheral area) at the left side of the display area AA and the peripheral area (fourth peripheral area) at the right side of the display area AA, respectively, and are electrically connected to the driving circuit 103 and the switching circuit 104. For example, the signal lead 107 on the left side of the display area AA is electrically connected to the driving circuit 103, the third switch set and the fourth switch set, and the signal lead 107 on the right side of the display area AA is electrically connected to the driving circuit 103, the fifth switch set and the sixth switch set. The plurality of signal leads 107 are respectively configured to transmit the first touch driving signal TP1, the second touch driving signal TP2, and the touch control signal TPSW, so that the touch electrode TP in the second display area AA2 can smoothly receive corresponding signals from the third switch group and the fourth switch Guan Zujie, and the touch electrode TP in the third display area AA3 can smoothly receive corresponding signals from the fifth switch group and the sixth switch Guan Zujie. Of course, in other embodiments, the plurality of signal leads 107 may also transmit other desired signals, which is not limited by the present invention.
In another embodiment, the second display area AA2 and/or the third display area AA3 may also be provided with virtual touch electrode lines 106 similar to the first driving signal lines 1061, the second driving signal lines 1062 and the control signal lines 1063, and the virtual touch electrode lines 106 receive the first touch driving signals TP1, the second touch driving signals TP2 and the touch control signals TPSW from the driving circuit 103 and transmit the first touch driving signals TP, the second touch driving signals TP2 and the touch control signals TPSW to the third switch group, the fourth switch group and/or the fifth switch group and the sixth switch group, so that the touch electrodes TP in the second display area AA2 and/or the third display area AA3 can successfully receive the corresponding signals. In this way, the signal lead 107 in the third peripheral area and/or the fourth peripheral area may be omitted, so that the size of the peripheral area BA is further reduced, and the display quality is ensured while catering for the trend of narrow frames.
As shown in fig. 1, the control ends of the first switch elements SW1 and the second switch elements SW2 of each switch group are connected to the same signal line, the first ends of the first switch elements SW1 of the first switch group, the third switch group and the fifth switch group are connected to the same signal line, and the first ends of the second switch elements SW2 of the second switch group, the fourth switch group and the sixth switch group are connected to the same signal line. During the manufacture of the open area by grinding or laser, the signal lines may break at the corners at the ends of the open area 108. Because the first display area AA1 corresponding to the opening area 108 in the present invention is provided with a dedicated signal transmission path, even if the signal line is disconnected at the corner, the signal transmission can be still completed through the first driving signal line 1061, the second driving signal line 1062, the control signal line 1063, the first switch group and the second switch group, so as to ensure the display quality. In another embodiment, since the first display area AA1 corresponding to the opening area 108 in the present invention is provided with a dedicated signal transmission path, the control end and the signal line connected to the first end of the first switch set and the control end and the first end of the second switch set can be disconnected from the control end and the signal line connected to the first end of the switch set in the second display area AA2 and/or the third display area AA 3.
As shown in fig. 1, each touch electrode line 105 is further electrically connected to a driving circuit 103, and the driving circuit 103 can be used to cooperate with the switching circuit 104 to provide corresponding signals from two ends of each touch electrode line 105, so that the uniformity of display in each area of the touch display panel 100 can be facilitated. In addition, the driving circuit 103 is also used for detecting the touch position.
In an embodiment, one of two adjacent touch electrodes TP in the touch electrode array receives a first touch driving signal TP1, and the other one receives a second touch driving signal TP2. As shown in fig. 1, taking the two touch electrodes TP at the uppermost side of the leftmost row as an example, for the same row of touch electrodes TP, two adjacent touch electrodes TP are respectively electrically connected to two different touch electrode lines 105, and the two different touch electrode lines 105 are respectively electrically connected to the second ends of the first switch element SW1 and the second switch element SW 2. Taking the leftmost two touch electrodes TP of the uppermost row as an example, for the same row of touch electrodes TP, two adjacent touch electrodes TP are respectively electrically connected to two different touch electrode lines 105, and the two different touch electrode lines 105 are respectively electrically connected to the second ends of the first switch element SW1 and the second switch element SW 2. Thus, one touch electrode TP of any two adjacent touch electrodes TP in the touch electrode array 102 receives the first touch driving signal TP1, and the other touch electrode TP receives the second touch driving signal TP2. That is, different touch driving signals are received between two adjacent touch electrodes TP. In the present invention, the touch electrode TP electrically connected to the first switching element SW1 is defined as a first type touch electrode, the touch electrode TP electrically connected to the second switching element SW2 is defined as a second type touch electrode, the first type touch electrode receives the first touch driving signal TP1, and the second type touch electrode receives the second touch driving signal TP2.
In the present invention, in the testing stage, generally, the driving circuit 103 is not assembled at this time, the external detecting device (not shown) may provide the first touch driving signal TP1 and the second touch driving signal TP2 (or the driving circuit 103 is assembled, the driving circuit 103 provides the first touch driving signal TP1 and the second touch driving signal TP 2), and the first touch driving signal TP1 and the second touch driving signal TP2 provided to the touch display panel 100 are different. For example, the first touch driving signal TP1 is at a low level (0V), the second touch driving signal TP2 is at a high level (5.2V), so that the display areas corresponding to the two adjacent touch electrodes TP respectively display white or black under the driving of the first touch driving signal TP1 and the second touch driving signal TP2, and the touch display panel 100 entirely presents a black-and-white grid display pattern, which can be used for detecting whether the touch electrodes TP have defects or are disconnected. In a normal usage stage, in general, when the driving circuit 103 is already assembled on the touch display panel 100, the driving circuit 103 provides the first touch driving signal TP1 and the second touch driving signal TP2, and the first touch driving signal TP1 and the second touch driving signal TP2 provided to the touch display panel 100 are the same, for example, all have a common voltage (COM).
In the normal use stage, the touch control signal TPSW transmitted by the control signal line 1063 in the touch display panel 100 of the present invention is at a high level (generally not less than 10V, for example, 10V, 15V, etc.), and in order to avoid the influence of the high level touch control signal TPSW on the signals of other layers, it is necessary to shield the signals.
In the touch display panel 100 of the present invention, during a normal usage period, the touch electrode TP is electrically connected to a common voltage (COM), the first driving signal line 1061 and the second driving signal line 1062 are also electrically connected to the common voltage (COM), and the control signal line 1063 is electrically connected to the high-level touch control signal TPSW. Referring to fig. 3, fig. 3 is a schematic partial structure of a touch display panel according to an embodiment of the invention. As shown in fig. 3, in one embodiment, the virtual touch electrode line 106 is a metal line and is located on the metal patterned layer. The touch electrode TP is a transparent conductive layer (e.g. ITO), and the layer of the touch electrode TP is located above the layer of the virtual touch electrode line 106 (not shown in fig. 3), and at this time, the area of the layer of the touch electrode TP corresponding to the control signal line 1063 needs to be set to cover the control signal line 1063, so as to shield the touch control signal TPSW with a common voltage (COM) to avoid interference to signals transmitted by other layers.
Fig. 4A is a schematic diagram of a dummy touch electrode line layout according to an embodiment of the present invention, fig. 4B is a schematic diagram of a dummy touch electrode line layout according to another embodiment of the present invention, and fig. 4C is a schematic diagram of a dummy touch electrode line layout according to another embodiment of the present invention. As shown in fig. 4A to 4C, an opening area 108 is formed in the touch display panel 100, and a display area AA (i.e., a first display area AA1, hereinafter referred to as "first display area AA") corresponding to the opening area 108 can be divided into three parts, namely, a first side part of the display area AA corresponding to the left side of the opening 108, a middle part of the display area AA corresponding to the middle part of the opening 108, and a second side part of the display area AA corresponding to the right side of the opening 108. The first driving signal line 1061, the second driving signal line 1062 and the control signal line 1063 may be disposed on the first side portion, the middle portion or the second side portion, or the first driving signal line 1061, the second driving signal line 1062 and the control signal line 1063 may be disposed on at least two of the first side portion, the middle portion and the second side portion.
As shown in fig. 4A, the first driving signal line 1061, the second driving signal line 1062, and the control signal line 1063 are disposed on the first side of the display area AA. As shown in fig. 4B, the first driving signal line 1061, the second driving signal line 1062, and the control signal line 1063 are disposed at the middle portion of the display area AA. As shown in fig. 4C, the first driving signal line 1061 and the second driving signal line 1062 are disposed at the middle portion of the display area AA, and the control signal line 1063 is disposed at the second side portion of the display area AA. Of course, fig. 4A-4C only illustrate an arrangement manner of the dummy touch electrode lines, and other connection manners may be provided according to the number and connection manners of the dummy touch electrode lines, for example, the first driving signal line 1061, the second driving signal line 1062, and the control signal line 1063 are all disposed on the second side portion, or the first driving signal line 1061, the second driving signal line 1062, and the control signal line 1063 are disposed on the first side portion, the middle portion, and the second side portion, respectively, or two of the first driving signal line 1061, the second driving signal line 1062, and the control signal line 1063 are disposed on one side portion or the middle portion, and the other is disposed on other areas of the display area.
The invention also provides a display device which comprises any one of the touch display panels.
According to the embodiment of the invention, the dummy touch electrode wire is arranged in the display area, and at least one touch signal of the driving circuit is transmitted to the switch circuit through the dummy touch electrode wire, so that the peripheral area is not occupied, the transmission path is short, and the reduction of the size of the peripheral area is utilized, and the signal transmission efficiency and quality are ensured. Further, the switch circuit is separately provided with the signal transmission path corresponding to the opening area of the touch display panel, so that the influence caused by line disconnection of the display device (especially the display device with the same series, different opening sizes and shared part of photomasks) in the process of grinding or laser opening area can be avoided, and the quality of the touch display panel is ensured. In addition, the dummy touch electrode wire for transmitting the touch control signal is covered by the layer where the touch electrode is located, so that the touch control signal can be shielded, interference to signals transmitted by other layers is avoided, and the display quality of the display panel is further improved.
Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (15)
1. A touch display panel, comprising:
The display device comprises a substrate, a display device and a display device, wherein the substrate is provided with a display area and a peripheral area which are adjacently arranged, and the peripheral area is provided with a first peripheral area and a second peripheral area which are arranged opposite to the display area;
The touch electrode array is arranged on the substrate;
the driving circuit is arranged in the first peripheral area;
The switch circuit is arranged in the second peripheral area;
Each touch electrode wire is electrically connected with the switch circuit and one touch electrode;
A plurality of dummy touch electrode lines disposed in the display region, wherein
At least one dummy touch electrode wire is electrically connected with the driving circuit and the switching circuit and is used for providing at least one touch signal for the switching circuit;
The touch display panel is provided with an opening area, a display area corresponding to the opening area in the display area is defined as a first display area, the plurality of dummy touch electrode wires further comprise a control signal wire, a first driving signal wire and a second driving signal wire, the first driving signal wire, the second driving signal wire and the control signal wire are positioned in the first display area, and each dummy touch electrode wire is not connected with each touch electrode.
2. The touch display panel of claim 1, wherein the touch signal further comprises a touch control signal, a first touch driving signal, and a second touch driving signal;
the control signal line is used for transmitting the touch control signal, the first driving signal line is used for transmitting the first touch driving signal, and the second driving signal line is used for transmitting the second touch driving signal.
3. The touch display panel of claim 2, wherein one of two adjacent touch electrodes in the array of touch electrodes receives the first touch drive signal and the other receives the second touch drive signal.
4. The touch display panel of claim 3, wherein the first touch drive signal is different from the second touch drive signal when the touch display panel is in a testing phase, and wherein the first touch drive signal is the same as the second touch drive signal when the touch display panel is in a normal use phase.
5. The touch display panel of claim 3, wherein the touch electrode array comprises a first type of touch electrode and a second type of touch electrode, the switch circuit further comprises a first switch group and a second switch group, the first driving signal line is electrically connected to the first switch group to be electrically connected to the first type of touch electrode, the second driving signal line is electrically connected to the second switch group to be electrically connected to the second type of touch electrode, and the control signal line is electrically connected to the first switch group and the second switch group.
6. The touch display panel according to claim 5, wherein the first switch group and the second switch group each comprise a plurality of switch elements, the switch elements have a first end, a second end and a control end, the first driving signal line is electrically connected to the first end of the switch elements in the first switch group, the second driving signal line is electrically connected to the first end of the switch elements in the second switch group, and the control signal line is electrically connected to the control end of the switch elements.
7. The touch display panel of claim 6, wherein the touch electrode wire is electrically connected to the second end of the switching element.
8. The touch display panel of claim 1, wherein a projection of the layer of the touch electrode array on the substrate covers a projection of the control signal line.
9. The touch display panel of claim 1, wherein the peripheral region further comprises a third peripheral region and a fourth peripheral region disposed opposite to the display region, and the touch display panel further comprises a plurality of signal leads connected to the driving circuit and electrically connected to the partial switching circuit after extending from the third peripheral region and the fourth peripheral region.
10. The touch display panel of claim 5, wherein the first switch set and the second switch set are disposed corresponding to the opening area.
11. The touch display panel according to claim 10, wherein the display area corresponding to the opening area in the display area has a first side portion, a middle portion and a second side portion;
the control signal line, the first driving signal line and the second driving signal line are arranged on the first side part, the middle part or the second side part, or
The control signal line, the first driving signal line, and the second driving signal line are disposed on at least two of the first side portion, the middle portion, and the second side portion.
12. The touch display panel according to claim 5, wherein the display area further comprises a second display area located at one side of the first display area, and the switch circuit further comprises a third switch set and a fourth switch set, which are disposed corresponding to the second display area and are used for receiving at least one touch signal and transmitting the touch signal to the touch electrode in the second display area.
13. The touch display panel of claim 12, wherein the third switch group and the fourth switch group each comprise a plurality of switch elements, the switch elements have a first end, the first ends of the switch elements in the third switch group receive the first touch driving signal, and the first ends of the switch elements in the fourth switch group receive the second touch driving signal.
14. The touch display panel of claim 12, wherein another at least one dummy touch electrode line of the plurality of dummy touch electrode lines is electrically connected to the driving circuit and the third and fourth switch groups for providing at least one touch signal to the third and fourth switch groups.
15. A display device, comprising:
A touch display panel according to any one of claims 1-14.
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| CN202310449438.7A CN116737008B (en) | 2023-04-24 | 2023-04-24 | Touch display panel and display device |
| TW112119149A TWI863299B (en) | 2023-04-24 | 2023-05-23 | Touch display panel and display device |
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| CN107861658A (en) * | 2017-11-29 | 2018-03-30 | 上海中航光电子有限公司 | Display panel and display device |
| CN109343258A (en) * | 2018-11-26 | 2019-02-15 | 厦门天马微电子有限公司 | Display panel and display device |
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| KR101993220B1 (en) * | 2012-10-29 | 2019-06-26 | 엘지디스플레이 주식회사 | Display device with integrated touch screen |
| TWI658390B (en) * | 2018-06-05 | 2019-05-01 | 鴻海精密工業股份有限公司 | Tft substrate and touch display panel |
| CN109857279B (en) * | 2019-03-19 | 2022-04-12 | 厦门天马微电子有限公司 | Display panel and display device |
| TWI697824B (en) * | 2019-05-13 | 2020-07-01 | 友達光電股份有限公司 | Touch display devcie |
| US20220137751A1 (en) * | 2019-07-26 | 2022-05-05 | Boe Technology Group Co., Ltd. | Display substrate, display device, manufacturing method and driving method for display substrate |
| CN110727373B (en) * | 2019-09-30 | 2021-12-03 | 武汉华星光电半导体显示技术有限公司 | Display device |
| CN111665987B (en) * | 2020-06-08 | 2023-10-03 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
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| CN107861658A (en) * | 2017-11-29 | 2018-03-30 | 上海中航光电子有限公司 | Display panel and display device |
| CN109343258A (en) * | 2018-11-26 | 2019-02-15 | 厦门天马微电子有限公司 | Display panel and display device |
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