CN107291303B - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN107291303B CN107291303B CN201710652036.1A CN201710652036A CN107291303B CN 107291303 B CN107291303 B CN 107291303B CN 201710652036 A CN201710652036 A CN 201710652036A CN 107291303 B CN107291303 B CN 107291303B
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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
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- Position Input By Displaying (AREA)
Abstract
The application discloses a touch display panel and a touch display device. The touch display panel comprises a first substrate; the touch control device comprises a plurality of first touch control electrode strips, a plurality of second touch control electrode strips and a plurality of second touch control electrode strips, wherein the first touch control electrode strips are arranged on a first substrate and comprise a plurality of complete touch control electrode strips and at least one special-shaped touch control electrode strip; the first touch signal lines are electrically connected with the corresponding first touch electrode strips. According to the embodiment, the electrode part in the special-shaped touch electrode strip is connected with the metal wiring part in parallel, so that the resistance of the special-shaped touch electrode strip is reduced, the semaphore of a touch signal of the special-shaped touch electrode strip is enhanced, and the touch sensitivity of the touch display panel is improved.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a touch display panel and a touch display device including the touch display panel.
Background
With the rapid development of display technology, touch display technology has gradually spread throughout the lives of people. In the existing touch display panel, compared with the resistive touch display panel, the capacitive touch display panel has the advantages of long service life, high light transmittance, capability of supporting multi-point touch, and the like, and becomes a hot spot of the touch display technology. In addition, in order to meet diversified needs of people, the edge of the existing touch display panel is generally required to be cut, and a notch into which a functional module such as a camera can be embedded is formed in the touch display panel.
An existing touch display panel may generally include a touch driving electrode and a touch sensing electrode that are arranged in a crossed manner, a mutual capacitance may be formed at a crossing position of the touch driving electrode and the touch sensing electrode, and an external capacitance formed by a finger contact may change the mutual capacitance between the two electrodes, thereby detecting a specific position of a touch point. When the touch display panel is hollowed out with a notch for embedding a functional module such as a camera, part of the electrodes of the touch driving electrodes and the touch sensing electrodes are usually missing. Further, if a portion of the touch driving electrode or the touch sensing electrode located at the notch is partially missing, the resistance value of the touch driving electrode or the touch sensing electrode may be increased. The increase of the resistance of the touch electrode may weaken the touch signal of the touch electrode, thereby affecting the touch sensitivity of the touch display panel.
Disclosure of Invention
It is an object of the present application to provide an improved touch display panel and touch display device to solve the technical problems mentioned in the background above.
In a first aspect, an embodiment of the present application provides a touch display panel, including a first substrate; the touch control device comprises a plurality of first touch control electrode strips, a plurality of second touch control electrode strips and a plurality of second touch control electrode strips, wherein the plurality of first touch control electrode strips are arranged on a first substrate and comprise a plurality of complete touch control electrode strips and at least one special-shaped touch control electrode strip, the area of the special-shaped touch control electrode strip is smaller than that of the complete touch control electrode strip, each special-shaped touch control electrode strip comprises an electrode part and a metal routing part, and the metal routing part and the electrode part in the same special-shaped touch control electrode strip are connected in parallel; a plurality of first touch signal lines, wherein each first touch signal line is electrically connected with the corresponding first touch electrode strip; each complete touch electrode strip extends along a first direction, each first touch electrode strip is arranged along a second direction, and the first direction and the second direction are crossed.
In a second aspect, the present application provides a touch display device, which includes the touch display panel.
The touch display panel and the touch display device provided by the embodiment of the application can include a plurality of first touch electrode strips disposed on a first substrate, the plurality of first touch electrode strips can include a plurality of complete touch electrode strips and at least one special-shaped touch electrode strip having an area smaller than that of the complete touch electrode strips, the special-shaped touch electrode strip can include an electrode portion and a metal routing portion connected in parallel with the electrode portion, each complete touch electrode strip extends along a first direction, each first touch electrode strip is arranged along a second direction, each first touch electrode strip is electrically connected with at least one first touch signal line for transmitting a touch signal to the corresponding first touch electrode strip, and the metal routing portion in the special-shaped touch electrode strip is connected in parallel with the electrode portion to reduce the resistance value of the special-shaped touch electrode strip, so as to increase the signal amount of the touch signal transmitted in the first touch signal line electrically connected with the touch electrode strip, the touch sensitivity of the touch display panel is improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of an embodiment of a touch display panel according to the present application;
FIG. 2 is a schematic structural diagram of another embodiment of a touch display panel according to the present application;
FIG. 3 is a schematic structural diagram of a touch display panel according to still another embodiment of the present application;
FIG. 4 is a schematic structural diagram of a touch display panel according to another embodiment of the present application;
fig. 5 is a schematic structural diagram illustrating an embodiment of a touch display device according to the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Please refer to fig. 1, which shows a schematic structural diagram of an embodiment of a touch display panel according to the present application. As shown in fig. 1, the touch display panel 100 of the present embodiment may include a first substrate 110, a first touch electrode strip and a first touch signal line 103, and the first touch electrode strip and the first touch signal line 103 may be disposed on the first substrate 110.
In the present embodiment, the touch display panel 100 may be hollowed out with a notch for embedding a functional module such as a camera, as shown in fig. 1, and the notch of the touch display panel 100 may be located at an edge of the touch display panel 100. The touch display panel 100 may include a plurality of first touch electrode bars, and the plurality of first touch electrode bars may include a plurality of complete touch electrode bars 101 and at least one irregular touch electrode bar 102, as shown in fig. 1. The irregular touch electrode bar 102 may be located at a cut-out of the touch display panel 100, and a partial electrode of the irregular touch electrode bar 102 is missing at a position closer to the middle than the complete touch electrode bar 101, as shown in fig. 1. Therefore, the area of the shaped touch electrode bar 102 may be smaller than the area of the complete touch electrode bar 101. The above-mentioned complete touch electrode bars 101 may extend along the first direction D1, and the first touch electrode bars may be sequentially arranged along the second direction D2, as shown in fig. 1, where the first direction D1 may cross the second direction D2. The different shaped touch electrode strips 102 may include electrode portions 1021 and metal trace portions 1022, as shown in fig. 1, and the metal trace portions 1022 and the electrode portions 1021 in the same shaped touch electrode strip 102 may be connected in parallel. Compared with the touch display panel in the prior art, the irregular touch electrode strip 102 of the touch display panel 100 provided in the present embodiment can connect the electrode portion 1021 and the metal trace portion 1022 in parallel, which can reduce the resistance of the irregular touch electrode strip 102, enhance the touch signal of the irregular touch electrode 1022, and thereby improve the touch sensitivity of the touch display panel 100.
In this embodiment, the edge of the touch display panel 100 parallel to the first direction D1 is cut with a notch for disposing functional modules such as a camera, as shown in fig. 1, so that an electrode missing occurs at a portion near the middle of the first touch electrode strip near the edge, and at this time, the first touch electrode strip is connected in parallel with metal traces to form the special-shaped touch electrode strip 102. The touch display panel 100 may further include a plurality of first touch signal lines 103, and each of the first touch signal lines 103 may be electrically connected to a corresponding first touch electrode bar. It should be noted that each first touch electrode bar may be electrically connected to at least one first touch signal line 103, so that each first touch signal line 103 may transmit a touch signal for the first touch electrode bar electrically connected thereto. In the special-shaped touch electrode strip 102 in this embodiment, the electrode part 1021 and the metal trace part 1022 are connected in parallel, so that the resistance value of the special-shaped touch electrode strip 102 can be reduced, the signal amount of the touch signal transmitted by the first touch signal line 103 electrically connected to the special-shaped touch electrode strip 102 can be increased, and the touch sensitivity of the touch display panel 100 can be improved.
In some optional implementations of the embodiment, the touch display panel 100 may further include a second substrate 120, as shown in fig. 1, and the second substrate 120 may be disposed opposite to the first substrate 110. The second substrate 120 may be provided with second touch electrode bars 104, each of the second touch electrode bars 104 may extend along the second direction D2, and each of the second touch electrode bars 104 may be arranged along the first direction D1, as shown in fig. 1. The second substrate 120 may further have a plurality of second touch signal lines 105 disposed thereon, and each second touch electrode strip 104 may be electrically connected to at least one second touch signal line 105, for example, in fig. 1, each second touch electrode strip 104 may be electrically connected to one second touch signal line 105. In the touch display panel 100, a touch capacitor may be formed at the intersection of the first touch electrode strip and the second touch electrode strip 104, and an external capacitor may be formed when a finger touches the touch display panel 100, and the external capacitor may change the mutual capacitance between the two electrodes, so as to detect the specific position of the touch point. It can be understood that, the metal trace portion 1022 and the electrode portion 1021 of the special-shaped touch electrode strip 102 are connected in parallel, so that the resistance value of the special-shaped touch electrode strip 102 can be reduced, thereby avoiding the influence of the resistance value of the special-shaped touch electrode strip 102 on the capacitance value formed by the special-shaped touch electrode strip 102 and each second touch electrode strip 104, and enhancing the signal amount of the touch signal of the special-shaped touch electrode strip 102.
In some optional implementation manners of this embodiment, the first substrate 110 and the second substrate 120 in the touch display panel 100 may be a color filter substrate and an array substrate, respectively, and the first touch electrode strip may be a touch sensing electrode disposed on the color filter substrate. The second touch electrode strips 104 may be touch driving electrodes disposed on the array substrate. The first direction D1 may be a row direction, the second direction D2 may be a column direction, and the extending direction and the arrangement direction of each touch sensing electrode and each touch driving electrode may be as shown in fig. 1. The first touch electrode strip can be a complete touch electrode strip 101 or a shaped touch electrode strip 102, as shown in fig. 1, and the metal trace portion 1022 and the electrode portion 1021 in any shaped touch electrode strip 102 can be in contact, so that the metal trace portion 1021 in the shaped touch electrode strip 102 is connected in parallel with the electrode portion 1022. As shown in fig. 1, when the first touch electrode bars and the second touch electrode bars 104 are touch sensing electrode bars and touch driving electrodes, respectively, the second touch signal lines 105 may provide driving signals to the second touch electrode bars 104 electrically connected thereto, mutual capacitances may be formed at crossing positions of the first touch electrode bars and the second touch electrode bars 104, external capacitances may be formed when a finger contacts the touch display panel 100, the external capacitances may change the mutual capacitance between the two electrodes, and the first touch signal lines 103 may output sensing signals of the first touch electrode bars electrically connected thereto, so that the touch display panel 100 may detect specific positions of touch points. It can be understood that, when the first touch electrode strip is the shaped touch electrode strip 102, the shaped touch electrode strip 102 can connect the metal trace part 1022 and the electrode part 1021 in parallel to reduce the resistance of the shaped touch electrode strip 102, so as to increase the amount of the touch sensing signal correspondingly output by the shaped touch electrode strip 102, and improve the touch sensitivity of the touch display panel 100.
The touch display panel 100 provided in the above-mentioned embodiment of the present application may include a plurality of first touch electrode strips disposed on the first substrate 110, the plurality of first touch electrode strips may include a plurality of complete touch electrode strips 101 and at least one shaped touch electrode strip 102 having an area smaller than that of the complete touch electrode strips 101, each shaped touch electrode strip 102 may include an electrode portion 1021 and a metal trace portion 1022 connected to the electrode portion 1021 in parallel, each complete touch electrode strip 101 may extend along a first direction D1, each first touch electrode strip may be arranged along a second direction D2, each first touch electrode strip is electrically connected to at least one first touch signal line 103 for transmitting a touch signal to the corresponding first touch electrode strip, and the resistance value of the shaped touch electrode strip 102 may be reduced by connecting the metal trace portion 1022 in parallel to the electrode portion 1021 in the shaped touch electrode strip 102, therefore, the signal amount of the touch signal transmitted in the first touch signal line 103 electrically connected to the shaped touch electrode strip 102 can be increased, and the touch sensitivity of the touch display panel 100 can be improved.
Please refer to fig. 2, which shows a schematic structural diagram of another embodiment of a touch display panel according to the present application. As shown in fig. 2, the touch display panel 200 of the present embodiment may include a first substrate 210, a first touch electrode strip and a first touch signal line 203, and the first touch electrode strip and the first touch signal line 203 may be disposed on the first substrate 210.
In this embodiment, the first substrate 210 may be provided with a plurality of first touch electrode bars, and the plurality of first touch electrode bars may include a complete touch electrode bar 201 and a plurality of irregular touch electrode bars 202. For example, in the touch display panel 200 shown in fig. 2, two shaped touch electrode bars 202 may be disposed on the first substrate 210. Each of the shaped touch electrode strips 202 may include an electrode portion 2021 and a metal trace portion 2022, and the electrode portion 2021 and the metal trace portion 2022 of the same shaped touch electrode strip 202 are connected in parallel. The first touch electrode strips may be a metal mesh structure, as shown in fig. 2. Compared with the first touch electrode strip made of the ITO material, the first touch electrode strip is of a metal mesh structure formed by a plurality of metal short wires, so that the resistance value of the first touch electrode strip can be reduced, and the touch signal quantity of the first touch electrode can be increased. When the touch display panel 200 is notched, so that a part of the electrodes in the middle of the notched first touch electrode bar are missing, as shown in fig. 2, the first touch electrode bar with a part of the electrodes missing is formed, and the resistance of the first touch electrode bar is increased due to the missing of the part of the electrodes, so that the touch signal of the first touch electrode bar is weakened. At this time, the metal trace portion 2022 is connected in parallel with the electrode portion 2021 of the first touch electrode, so as to reduce the resistance value of the first touch electrode strip and form the special-shaped touch electrode strip 2022, as shown in fig. 2, thereby increasing the touch signal amount of the special-shaped touch electrode strip 2022 and further increasing the touch sensitivity of the touch display panel 200.
In the present embodiment, each of the complete touch electrode bars 201 in the touch display panel 200 may extend along the first direction D1, and each of the first touch electrode bars may be sequentially arranged along the second direction D2, as shown in fig. 2, where the first direction D1 crosses the second direction D2. Each of the first touch electrode strips may be electrically connected to a corresponding first touch signal line 203, as shown in fig. 2, the first touch signal line 203 may be used for transmitting a touch signal. The touch display panel 200 may include a display area and a non-display area, and the non-display area surrounds the display area, and thus, the first substrate 210 may include the display area 206 and the non-display area surrounding the display area 206, as shown in fig. 2. For each shaped touch electrode strip 202, the electrode portion 2021 may be located in the display region 206, and the metal trace portion 2022 is located in the non-display region, as shown in fig. 2. Specifically, the above non-display area may include an upper frame area 2071, a lower frame area 2072, a first side frame area 2073 and a second side frame area 2074, and the upper frame area 2071 and the lower frame area 2072 are respectively located on both sides of the display area 206, and the first side frame area 2073 and the second side frame area 2074 are respectively located on both sides of the display area 206. The touch display panel 200 may further include a driver chip 208, and the driver chip 208 may be disposed in a lower frame region 2072 of the touch display panel 200, as shown in fig. 2. It should be noted that the touch display panel 200 may further include a flexible circuit board 209, and both the flexible circuit board 209 and the driving chip 208 are located in the lower frame area 2072 of the touch display panel 200.
In the present embodiment, when the cut-out of the touch display panel 200 is large, a plurality of irregular touch electrode bars 202 may exist at the cut-out. For example, in the touch display panel 200 shown in fig. 2, the first substrate 210 may include two shaped touch electrode bars 202. The shaped touch electrode strip 202 may include only one electrode portion 2021, or the shaped touch electrode strip 202 may further include two or more electrode portions 2022 arranged along the first direction D1. For example, in the two shaped touch electrode strips 202 shown in fig. 2, the shaped touch electrode strip 202 near the upper edge of the first substrate 210 may include two electrode portions 2021 arranged along the first direction D1, and the other shaped touch electrode strip 202 may include only one electrode portion 2021. When the shaped touch electrode strip 202 includes two or more electrode portions 2021, the metal trace portion 2022 in the shaped touch electrode strip 202 can be electrically connected to each electrode portion 2021 when being connected in parallel with each electrode portion 2021.
It should be noted that the electrode portion 2021 of the shaped touch electrode strip 202 may include a first edge, and the first edge may be close to the upper frame area 2071 of the non-display area, and the metal trace portion 2022 of the shaped touch electrode strip 202 may be disposed along the first edge. The metal trace portion 2022 of the shaped touch electrode strip 202 can be located in the upper bezel region 2071 of the non-display region, as shown in fig. 2. The metal trace portion 2022 of the shaped touch electrode strip 202 is disposed in the upper bezel region 2071 of the non-display region, so that the resistance of the shaped touch electrode strip 202 is reduced, and the metal trace portion 2022 does not affect the display of the touch display panel 200. In the touch display panel 200 shown in fig. 2, two shaped touch electrode strips 202 sequentially arranged along the second direction D2 may be included, and in the second shaped touch electrode strip 202 arranged along the second direction D2, an edge adjacent to the upper frame area 2071 is shorter, so that the metal trace portion 2022 of the shaped touch electrode strip 202 is shorter than the metal trace portion 2022 of the other shaped touch electrode strip 202, as shown in fig. 2, so that the metal trace portion 2022 of the shaped touch electrode strip 202 may be located only in the upper frame area 2071, which prevents the metal trace portion 2022 from extending to the display area 206, and ensures the display quality of the touch display panel 200.
In some optional implementation manners of this embodiment, the first substrate 210 may be a color film substrate, the touch display panel 200 may further include a second substrate 220, the second substrate 220 may be an array substrate, and the array substrate may be provided with a plurality of second touch electrode stripes 204 and second touch signal lines 205 electrically connected to the second touch electrode stripes 204, as shown in fig. 2. The first touch electrode strip and the second touch electrode strip 204 may be a touch sensing electrode and a touch driving electrode, respectively. The driving chip 208 located in the lower frame 2072 of the non-display area can provide a touch driving signal to each second touch electrode bar 204 through the second touch signal line 205. When the touch display panel 200 senses external touch, the corresponding first touch electrode strip may output a touch sensing signal through the first touch sensing signal line 203. If the resistance of the first touch electrode strip is relatively large, the touch sensing signal output by the first touch electrode strip is weakened, so that the touch sensitivity of the touch display panel 200 is affected. Therefore, the electrode portion 2021 and the metal trace portion 2022 of the shaped touch electrode strip 202 are connected in parallel to reduce the resistance of the shaped touch electrode strip 202, so as to enhance the signal amount of the shaped touch electrode strip 202 outputting the touch sensing signal and improve the touch sensitivity of the touch display panel 200.
In the touch display panel 200 provided in the above embodiment of the application, the special-shaped touch electrode strip 202 can reduce the resistance value of the special-shaped touch electrode strip 202 by connecting the metal trace portion 2022 and the electrode portion 2021 in parallel, so as to improve the signal amount of the touch signal transmitted by the special-shaped touch electrode strip 202, and the metal trace portion 2022 in each special-shaped touch electrode strip 202 can be provided with the upper bezel region 2071 in the non-display region, so that the special-shaped touch electrode strip 202 can reduce the resistance value and simultaneously prevent the special-shaped touch electrode strip 202 from affecting the display quality of the touch display panel 200.
Referring next to fig. 3, a schematic structural diagram of a touch display panel according to still another embodiment of the present application is shown. As shown in fig. 3, the touch display panel 300 of the present embodiment may include a first substrate 310, a second substrate 320, a first touch electrode strip, a second touch electrode strip 304, a first touch signal line 303, and a second touch signal line 305.
In the present embodiment, the touch display panel 300 may include a plurality of first touch electrode bars. And the plurality of first touch electrode bars may include a plurality of complete touch electrode bars 301 and at least one shaped touch electrode bar 302, as shown in fig. 3. Each of the complete touch electrode bars 301 may extend along the first direction D1, and each of the first touch electrode bars may be sequentially arranged along the second direction D2, where the first direction D1 and the second direction D2 may be arranged crosswise, as shown in fig. 3. Here, the first direction D1 may be a column direction, and the second direction D2 may be a row direction, that is, the entire touch electrode strips 301 may extend in the column direction, and the first touch electrode strips may be arranged in the row direction, as shown in fig. 3. Each of the first touch electrode bars may be electrically connected to a corresponding first touch signal line 303, and each of the first touch electrode bars and the first touch signal line 303 may be disposed on the first substrate 310. Here, the first substrate 310 may be an array substrate, and the first touch electrode strips may be touch driving electrodes, as shown in fig. 3, each touch driving electrode may correspond to a plurality of first touch signal lines 303, and each touch driving electrode may be electrically connected to the plurality of first touch signal lines 303. The special-shaped touch electrode strip 302 may include an electrode portion 3021 and a metal trace portion 3022, and the electrode portion 3021 and the metal trace portion 3022 in the same special-shaped touch electrode strip 302 may be connected in parallel.
Further, the above-mentioned shaped touch electrode strip 302 can make the metal trace portion 3022 and the electrode portion 3021 in the same shaped touch electrode strip 302 in parallel by contacting the metal trace portion 3022 with the electrode portion 3021. Or, when an insulating layer is disposed between the metal trace portion 3022 and the electrode portion 3021, a through hole may be disposed on the insulating layer, and the metal trace portion 3022 and the electrode portion 3021 may be electrically connected through the through hole, so that the metal trace portion 3022 and the electrode portion 3021 of the same shaped touch electrode bar 302 are connected in parallel.
In this embodiment, the touch display panel 300 may further include a plurality of second touch electrode bars 304, as shown in fig. 3. Each second touch electrode bar 304 may be electrically connected to a corresponding second touch signal line 305, and each second touch electrode bar 304 and the second touch signal line 305 may be disposed on the second substrate 320. The second substrate 320 may be a color film substrate, each of the second touch electrode stripes 304 may be a touch sensing electrode, and each of the touch sensing electrodes may extend along a row direction and are arranged along a column direction, as shown in fig. 3. It can be seen that the first touch electrode bars and the second touch electrode bars 304 may be arranged to intersect with each other, the first touch signal lines 303 may provide driving signals to the first touch electrode bars electrically connected to the first touch electrode bars, the first touch electrode bars and the second touch electrode bars 304 may form mutual capacitances at the intersecting positions, when a finger contacts the touch display panel 300, an external capacitance may be formed, the external capacitance may change the mutual capacitance between the two electrode bars, and the second touch signal lines 305 may output sensing signals of the second touch electrode bars 304 electrically connected to the second touch signal lines, so as to detect the position of a touch point in the touch display panel 300. It can be understood that, when the first touch electrode strip (touch driving electrode) is the special-shaped touch electrode strip 302, the special-shaped touch electrode strip 302 can reduce the resistance value of the special-shaped touch electrode strip 302 by connecting the metal routing portion 3022 in parallel with the electrode portion 3021, so that the reduction of the signal amount of the driving signal in the special-shaped touch electrode strip 302 due to the larger resistance of the special-shaped touch electrode strip 302 can be avoided, and the touch sensitivity of the touch display panel 300 is improved.
In some optional implementations of the embodiment, the touch display panel 300 may include a display area and a non-display area, the first substrate 310 includes the display area 306 and the non-display area, and the non-display area may include an upper frame area 3071, a lower frame area 3072, a first side frame area 3073, and a second side frame area 3074, as shown in fig. 3. The upper frame area 3071 and the lower frame area 3072 may be respectively located at two sides of the display area 306, the first side frame area 3073 and the second side frame area 3074 may be respectively located at two sides of the display area 306, and the driving chip 308 may be located in the lower frame area 3072, as shown in fig. 3. The first edge of the electrode portion 3021 of the shaped touch electrode strip 302 may be close to the first side frame area 3073 and/or the second side frame area 3074, and the metal trace portion 3022 in the shaped touch electrode strip 302 may be disposed along the first edge, so that the metal trace portion 3022 in the shaped touch electrode strip 302 and the electrode portion 3021 may be connected in parallel. And the metal trace portion 3022 can be located in the first side frame area 3073 and/or the second side frame area 3074. For example, in the touch display panel 300 shown in fig. 3, a first edge of the electrode portion 3021 of the shaped touch electrode strip 302 may be close to the second side frame area 3074, the metal trace portion 3022 in the shaped touch electrode strip 302 may be disposed along the first edge of the electrode portion 3021, and the metal trace portion 3022 may be located in the second side frame area 3074.
Please refer to fig. 4, which is a schematic structural diagram of a touch display panel according to another embodiment of the present application. As shown in fig. 4, the touch display panel 400 of the present embodiment may include a first substrate 410, a second substrate 420, a first touch electrode strip, a second touch electrode strip 404, a first touch signal line 403, and a second touch signal line 404.
In this embodiment, the touch display panel 400 may include a plurality of first touch electrode bars, and as shown in fig. 4, the plurality of first touch electrode bars may include a plurality of complete touch electrode bars 401 and at least one shaped touch electrode bar 402. Each shaped touch electrode strip 402 can include an electrode portion 4021 and a metal trace portion 4022 connected in parallel to the electrode portion 4021. Each first touch electrode bar may be electrically connected to a corresponding first touch signal line 403, and each first touch electrode bar and the first touch signal line 403 may be disposed on the first substrate 410. Here, the first substrate 410 may be an array substrate, and the first touch electrode bar may be a touch driving electrode. Each of the full touch electrodes 401 may extend along the first direction D1, and each of the first touch electrode bars may be arranged along the second direction D2. Here, the first direction D1 and the second direction D2 may intersect, the first direction D1 may be a row direction, and the second direction D2 may be a column direction, as shown in fig. 4.
In this embodiment, the second substrate 420 may be a color film substrate, and the second touch electrode stripes 404 may be touch sensing electrodes. Each of the second touch electrode stripes 404 and the second touch signal lines 405 may be disposed on the color filter substrate. Each of the second touch electrode bars 404 may extend along the second direction D2 and be arranged along the first direction D1, as shown in fig. 4, each of the second touch electrode bars 404 may be electrically connected to a corresponding second touch signal line 405. As can be seen, the first touch electrode bars and the second touch electrode bars 404 may be arranged in a crossed manner, the first touch signal lines 403 may provide driving signals for the corresponding first touch electrode bars, and the second touch signal lines 405 may correspondingly output sensing signals on the second touch electrode bars, so that the touch display panel 400 may detect a touch condition thereon. It can be understood that when the first touch electrode strip (touch driving electrode) is the special-shaped touch electrode strip 402, the special-shaped touch electrode strip 402 can connect the metal trace portions 4022 in parallel with the electrode portions 4021, which can reduce the resistance value of the special-shaped touch electrode strip 402, thereby preventing the reduction of the semaphore of the driving signal in the special-shaped touch electrode strip 402 and improving the touch sensitivity of the touch display panel 400.
It should be understood that the first touch electrode strip may be an electrode strip made of ITO, or the first touch electrode strip may also be a metal mesh electrode strip, which is not limited herein. The line width of the metal trace portion 4022 in the irregular touch electrode strip 402 may be greater than the line width of the first touch signal line 403, as shown in fig. 4. Setting the line width of the metal trace portion 4022 of the special-shaped touch electrode strip 402 to be wider can reduce the resistance of the metal trace portion 4022, thereby further reducing the resistance value of the special-shaped touch electrode strip 402, increasing the signal amount of the touch signal of the special-shaped touch electrode strip 402, and improving the touch sensitivity of the touch display panel 400.
Generally, the touch display panel may further include well-known structures, such as thin film transistors, pixel electrodes, a common electrode, liquid crystals, and spacers for supporting the liquid crystal layer. The liquid crystal layer rotates under the action of an electric field between the pixel electrode and the common electrode, and the display of a picture is realized.
In addition, the present application also provides a touch display device 500, which may include the touch display panel in the above embodiments. Here, as shown in fig. 5, fig. 5 is a schematic diagram illustrating a touch display device according to an embodiment of the present application. The touch display device 500 may be a mobile phone with a touch function as shown in fig. 5, and the structure and function of the touch display panel in the touch display device 500 are the same as those in the above embodiments, and are not repeated here. It can be understood by those skilled in the art that the touch display device can also be a computer, a television, a wearable smart device, etc. with a touch function, which is not listed here.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (12)
1. A touch display panel, comprising:
a first substrate;
the touch control device comprises a plurality of first touch control electrode strips, a plurality of second touch control electrode strips and a plurality of second touch control electrode strips, wherein the plurality of first touch control electrode strips are arranged on a first substrate and comprise a plurality of complete touch control electrode strips and at least one special-shaped touch control electrode strip, the area of the special-shaped touch control electrode strip is smaller than that of the complete touch control electrode strip, each special-shaped touch control electrode strip comprises an electrode part and a metal routing part, and the metal routing part and the electrode part in the same special-shaped touch control electrode strip are connected in parallel;
a plurality of first touch signal lines, wherein each first touch signal line is electrically connected with the corresponding first touch electrode strip;
each complete touch electrode strip extends along a first direction, each first touch electrode strip is arranged along a second direction, and the first direction and the second direction are crossed.
2. The touch display panel according to claim 1, further comprising:
a second substrate disposed opposite to the first substrate;
a plurality of second touch electrode strips disposed on the second substrate, each of the second touch electrode strips extending along the second direction and arranged along the first direction;
and each second touch electrode strip is electrically connected with at least one second touch signal line.
3. The touch display panel according to claim 1, wherein the touch display panel includes a display area and a non-display area surrounding the display area;
in any one of the special-shaped touch electrode strips, the electrode part is located in the display area, and the metal routing part is located in the non-display area.
4. The touch display panel of claim 3, wherein the shaped touch electrode strip comprises at least two electrode portions arranged along the first direction, and wherein the metal trace portion in the shaped touch electrode strip electrically couples each of the electrode portions when connected in parallel with each of the electrode portions.
5. The touch display panel according to claim 1, wherein each of the first touch electrode strips is a metal mesh structure.
6. The touch display panel according to claim 3, further comprising a driving chip;
the non-display area comprises an upper frame area, a lower frame area, a first side frame area and a second side frame area, wherein the upper frame area and the lower frame area are respectively positioned at two sides of the display area, and the first side frame area and the second side frame area are respectively positioned at two sides of the display area;
the driving chip is arranged in the lower frame area.
7. The touch display panel of claim 6, wherein a first edge of the electrode portion of the shaped touch electrode strip is close to the upper frame area, and the metal trace portion of the shaped touch electrode strip is disposed along the first edge and located in the upper frame area.
8. The touch display panel according to claim 7, wherein the first substrate is a color film substrate, and the first touch electrode stripes are touch sensing electrodes;
and a metal routing part in any one of the special-shaped touch electrode strips is in contact with an electrode part in the special-shaped touch electrode strip, so that the metal routing part is connected with the electrode part in parallel.
9. The touch display panel according to claim 6, wherein a first edge of the electrode portion of the special-shaped touch electrode strip is close to the first side frame area and/or the second side frame area, and the metal trace portion in the special-shaped touch electrode strip is disposed along the first edge and located in the first side frame area and/or the second side frame area.
10. The touch display panel according to claim 7 or 9, wherein the first substrate is an array substrate, and the first touch electrode strips are touch driving electrodes;
the metal routing part in the special-shaped touch electrode strip is directly contacted with the electrode part in the special-shaped touch electrode strip so as to enable the metal routing part to be connected with the electrode part in parallel; or an insulating layer provided with a through hole is arranged between the metal routing part in the special-shaped touch electrode strip and the electrode part in the special-shaped touch electrode strip, and the metal routing part is connected with the electrode part in parallel through the through hole in the insulating layer.
11. The touch display panel according to claim 1, wherein the line width of the metal trace portion is greater than the line width of the first touch signal line.
12. A touch display device comprising the touch display panel according to any one of claims 1 to 11.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710652036.1A CN107291303B (en) | 2017-08-02 | 2017-08-02 | Touch display panel and touch display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710652036.1A CN107291303B (en) | 2017-08-02 | 2017-08-02 | Touch display panel and touch display device |
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| CN107291303A CN107291303A (en) | 2017-10-24 |
| CN107291303B true CN107291303B (en) | 2020-09-25 |
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