CN106681044B - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN106681044B CN106681044B CN201710188387.1A CN201710188387A CN106681044B CN 106681044 B CN106681044 B CN 106681044B CN 201710188387 A CN201710188387 A CN 201710188387A CN 106681044 B CN106681044 B CN 106681044B
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- touch
- display area
- auxiliary bridge
- display panel
- signal lines
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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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
Abstract
The invention provides a touch display panel and a touch display device thereof, which comprise a touch electrode block and a touch signal line correspondingly connected with the touch electrode block through a bridge-spanning structure, wherein the touch signal line comprises a first part positioned in a display area and a second part positioned in a non-display area, and an auxiliary bridge-spanning structure is arranged on the second part of the touch signal line, so that impurity ions diffused from a sealant are preferentially diffused to the non-display area where the auxiliary bridge-spanning structure is positioned, the ion pollution generated by the sealant is locked, the number of the impurity ions entering the display area is reduced, and the line ghost phenomenon of the touch display panel is further improved.
Description
Technical Field
The present invention relates to the field of touch display technologies, and in particular, to a touch display panel and a touch display device.
Background
With the rapid development of display technology, touch display devices have gradually spread throughout the lives of people. Currently, the conventional embedded touch display device detects the touch position of a finger by using the principle of mutual capacitance or self-capacitance. The touch control display device comprises a driving unit, a plurality of self-capacitance electrodes and a plurality of driving units, wherein the self-capacitance electrodes are arranged on the same layer and are insulated from each other, when a human body does not touch a screen, the capacitance borne by each capacitance electrode is a fixed value, when the human body touches the screen, the capacitance borne by the corresponding self-capacitance electrode is a fixed value superposed with the capacitance of the human body, and the touch control position can be judged by detecting the capacitance value change of each capacitance electrode by a touch control integrated circuit in the driving unit in a touch control time period.
The existing liquid crystal display panel comprises an array substrate, a color film substrate and a liquid crystal layer, wherein the liquid crystal layer is filled between the array substrate and the color film substrate. And the peripheries of the array substrate and the color film substrate are sealed into a box through frame sealing glue. Due to the material, the frame sealing glue can always separate out impurity ions, which affects the display effect, and particularly around the display area close to the liquid crystal display panel, the display area is susceptible to line ghost due to the influence of the impurity ions in the frame sealing glue.
Particularly, when a touch device is built in a liquid crystal display panel, the problem of line ghost is more serious, specifically, as shown in fig. 1, fig. 1 is a liquid crystal display panel with an embedded touch structure in the prior art, the liquid crystal display panel with the built-in touch device includes a display area and a non-display area arranged around the display area, and a frame sealing adhesive is filled in the non-display area. The touch component is disposed in the display area and includes a plurality of self-capacitance electrodes 100 arranged in a matrix and a plurality of touch signal lines 200, the touch signal lines 200 are disposed below the self-capacitance electrodes 100, and each self-capacitance electrode 100 is electrically connected to the driving unit through the touch signal line 200. In this structure, each touch signal line 200 is electrically connected to its corresponding self-capacitance electrode 100 only through the connection hole 300, but is not electrically connected to other self-capacitance electrodes 200, that is, the connection hole 300 is only disposed at a position where the touch signal line 100 and the self-capacitance electrode 200 need to be electrically connected, and the connection hole 300 is not disposed at a position where the touch signal line 100 and other self-capacitance electrodes are overlapped, so that the connection hole 300 is located at a position where the impurity ions precipitated from the frame sealing adhesive are more easily attracted to the display region of the liquid crystal display panel due to an electric field, and line ghost occurs.
Disclosure of Invention
The invention aims to provide a touch display panel and a touch display device, which are used for solving the problem of line ghost caused by impurity ions separated out from frame sealing glue in the conventional display panel and display device and improving the visual effect of the display panel.
The invention provides a touch display panel, which comprises a display area and a non-display area arranged around the display area; the touch electrode block is positioned in the display area; the touch signal lines are connected with the corresponding touch electrode blocks through the bridge-spanning structure; the touch signal lines comprise a first part positioned in the display area and a second part positioned in the non-display area, and an auxiliary bridge spanning structure is arranged on the second part of at least one touch signal line.
In an embodiment of the invention, at least one auxiliary bridge spanning structure is disposed on each touch signal line.
In an embodiment of the invention, each touch signal line is provided with an auxiliary bridge spanning structure, and distances between all the auxiliary bridge spanning structures and a boundary line of the display area are equal.
In an embodiment of the invention, each touch signal line is provided with at least two auxiliary bridge spanning structures, and all touch signal lines have the same number of auxiliary bridge spanning structures.
In an embodiment of the invention, the second portion of the touch signal line includes at least two branch signal lines parallel to each other and extending along an extending direction of the touch signal line, and two ends of the at least two branch signal lines are respectively connected to the second connecting line through the first connecting line and connected to the touch signal line where the at least two branch signal lines are located; the auxiliary bridge spanning structure is positioned on the branch signal lines, and each branch signal line is provided with the auxiliary bridge spanning structure.
In an embodiment of the invention, the same number of auxiliary bridge structures are disposed on at least two branch signal lines of the same touch signal line.
In an embodiment of the invention, the auxiliary bridge spanning structure closest to the boundary line of the display area on each touch signal line is a first auxiliary bridge spanning structure, and distances between all the first auxiliary bridge spanning structures and the boundary line of the display area are equal; the distances between two adjacent auxiliary bridge spanning structures on all touch signal lines are equal.
In an embodiment of the present invention, the touch display panel further includes: an upper substrate; a lower substrate; the upper substrates are oppositely arranged; the frame sealing glue is positioned in the non-display area and between the upper substrate and the lower substrate; the second part of the touch signal line is positioned between the frame sealing glue and the display area.
In one embodiment of the present invention, the lower substrate includes: the third metal layer is arranged on the same layer as the touch signal line; the common electrode layer is arranged on the same layer with the touch electrode block; a pixel electrode layer; the third metal layer and the common electrode layer are insulated and spaced through a first insulating layer, and the pixel electrode layer and the common electrode layer are insulated and spaced through a second insulating layer.
In an embodiment of the invention, the auxiliary bridge-spanning structure includes a first via hole, a second via hole and a bridge-spanning structure, and the bridge-spanning structure and the pixel electrode are formed at the same layer; the first via hole and the second via hole respectively penetrate through the second insulating layer and the first insulating layer in sequence to expose the touch signal line, and the first via hole and the second via hole are filled in a bridge spanning mode.
In an embodiment of the invention, the touch display panel includes a dummy pixel unit located in the non-display area, and the auxiliary bridge structure is located in an area where the dummy pixel unit is located.
In addition, the invention also provides a touch display device which comprises the touch display panel.
Compared with the prior art, the technical scheme provided by the invention has the following advantages: the touch display panel and the touch display device thereof provided by the invention comprise a touch electrode block and a touch signal line correspondingly connected with the touch electrode block through a bridge-spanning structure, wherein the touch signal line comprises a first part positioned in a display area and a second part positioned in a non-display area. According to the invention, the auxiliary bridge-spanning structure is arranged on the second part of the touch signal line, the auxiliary bridge-spanning structure and the bridge-spanning structure positioned in the display area are synchronously formed, the manufacturing steps and the manufacturing cost of the touch display panel cannot be increased, the auxiliary bridge-spanning structure is arranged to enable impurity ions diffused from the frame sealing glue to be preferentially diffused to the non-display area where the auxiliary bridge-spanning structure is positioned, the ion pollution generated by the frame sealing glue is locked, the quantity of the impurity ions entering the display area is reduced, and the line ghost phenomenon of the touch display panel is further improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 is a diagram of a touch display panel in the prior art;
fig. 2 is a schematic diagram of a touch display panel according to an embodiment of the invention;
fig. 3 is a schematic top view of the touch display panel shown in fig. 2.
FIG. 4 is a schematic cross-sectional view of the array substrate of the touch display panel shown in FIG. 2;
FIG. 5 is a schematic diagram of an auxiliary bridge structure of the touch display panel shown in FIG. 2;
FIG. 6 is a schematic cross-sectional view of an auxiliary bridge structure in the touch display panel shown in FIG. 5;
fig. 7 is a schematic view of another touch display panel according to an embodiment of the invention;
FIG. 8 is a schematic diagram of another touch display panel according to an embodiment of the present invention;
fig. 9 is a schematic view of another touch display panel according to an embodiment of the invention;
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The invention provides a touch display panel, which comprises a touch electrode block and a touch signal line correspondingly connected with the touch electrode block through a bridge-spanning structure, wherein the touch signal line comprises a first part positioned in a display area and a second part positioned in a non-display area. The auxiliary bridge-spanning structure is arranged on the second part of the touch signal line, the auxiliary bridge-spanning structure and the bridge-spanning structure positioned in the display area are synchronously formed, the manufacturing steps and the manufacturing cost of the touch display panel cannot be increased, the auxiliary bridge-spanning structure is arranged to enable impurity ions diffused from the frame sealing glue to be preferentially diffused to a non-display area where the auxiliary bridge-spanning structure is positioned, the ion pollution generated by the frame sealing glue is locked, the number of the impurity ions entering the display area is reduced, and the line ghost phenomenon of the touch display panel is improved.
Fig. 2 is a schematic view of a touch display panel according to an embodiment of the present invention, and fig. 3 is a schematic top view of the touch display panel shown in fig. 2. as shown in fig. 2 and fig. 3, firstly, the present invention provides a touch display panel, where the touch display panel includes a display area 11 and a non-display area 12 disposed around the display area 11, and the non-display area 12 includes a frame glue area 122 for disposing a frame glue 3, and a blank area 121 located between the frame glue area 122 and the display area 11.
Further, the touch display panel further includes an upper substrate 1 and a lower substrate 2 correspondingly disposed, and a display function layer 4 correspondingly disposed in the display area 11. The frame sealing adhesive 3 is fixed between the upper substrate 1 and the lower substrate 2, and is used for sealing the display function layer 4 in a box space formed by the upper substrate 1 and the lower substrate 2, and the display function layer 4 may be, for example, a liquid crystal molecular layer.
Further, the touch display panel includes a plurality of mutually insulated touch electrode blocks 50, each touch electrode block 50 is time-division multiplexed as a touch sensing electrode and a common electrode, and each touch electrode block 50 is connected to a driving unit of the touch display panel terminal. When the touch electrode block 50 is used as a touch sensing electrode, the driving unit controls the touch display device formed by the touch display panel to realize touch sensing, and when the touch electrode block 50 is used as a common electrode, the driving unit controls the touch display device where the touch display panel is located to display images. The touch display panel further includes a plurality of touch signal lines 30, wherein the plurality of touch signal lines 30 are disposed in one-to-one correspondence with the plurality of touch electrode blocks 50, and are electrically connected to the plurality of touch electrode blocks 50 in one-to-one correspondence via a bridge structure 31. When the touch electrode blocks 50 serve as touch sensing electrodes, each touch electrode block 50 is electrically connected to the driving unit through the touch signal line 30. In the touch detection process, a touch driving signal is generated by a touch integrated circuit in the driving unit and is supplied to the touch electrode block 50 through the touch signal line 30, so that the touch electrode block 50 has a certain amount of electric charge; the integrated circuit for touch control in the driving unit reads the change condition of the charged state in the touch electrode block 50 through the touch signal line 30, and can determine which touch electrode block or blocks 50 are touched through the change of the charged state, so that the position of the touch point can be further determined. The touch driving signal and the change condition of the charged state can be understood as a pulse signal.
In order to overcome the defects of line ghost and the like caused by the absorption of the impurity ions separated by the frame sealing glue 3 into the display region 11, the invention further provides the auxiliary bridge structure 32 on the touch signal lines 30 of the touch display panel, wherein the auxiliary bridge structure 32 is located in the non-display region 12, and the number of the auxiliary bridge structures 32 on each touch signal line 30 is not particularly limited.
Specifically, each touch signal line 30 includes a first portion 301 located in the display region 11 and a second portion 302 located in the non-display region 12, and the auxiliary bridge structure 32 is disposed on the second portion 302 of the touch signal line 30 and disposed in the blank region 121 between the frame sealing adhesive 3 of the touch display panel and the display region 11, so that the impurity ions diffused from the frame sealing adhesive are preferentially diffused to the non-display region 12 where the auxiliary bridge structure 32 is located, thereby locking the ion contamination generated by the frame sealing adhesive, reducing the number of the impurity ions entering the display region 11, and further improving the line ghost phenomenon of the touch display panel.
In the present embodiment, the second portion 302 of each touch signal line 30 is provided with an auxiliary bridge structure 32, and each touch signal line 30 is provided with one auxiliary bridge structure 32.
Further, in the present embodiment, the touch electrode blocks 50 are arranged in a matrix, the touch signal lines 30 extend in the column direction, and distances between all the auxiliary bridge structures 32 and a boundary line of the display area 11 closest to the auxiliary bridge structures 32 are equal, that is, all the auxiliary bridge structures 32 are arranged in the row direction in the non-display area 12 where one end of the touch signal line 30 is located.
Further, in the present embodiment, an auxiliary bridge structure 32 is respectively disposed at two ends of each touch signal line 30 extending in the row direction. And further locking the ion pollution generated by the frame sealing glue at the two ends of the touch display panel, reducing the quantity of impurity ions entering the display area, and further improving the line ghost phenomenon of the touch display panel.
Referring to fig. 4 and 6, fig. 4 is a schematic cross-sectional view of an array substrate in the touch display panel shown in fig. 2, fig. 5 is a schematic cross-sectional view of an auxiliary bridge structure in the touch display panel shown in fig. 2, and fig. 6 is a schematic cross-sectional view of the auxiliary bridge structure in the touch display panel shown in fig. 5.
Specifically, in this embodiment, a liquid crystal panel is taken as an example for description, that is, the upper substrate is a color film substrate, the lower substrate is an array substrate, and the display function layer is a liquid crystal molecular layer. The array substrate is provided with a plurality of pixel units arranged in a matrix, and specifically, the array substrate includes a substrate 21, a thin film transistor T, a first metal layer M1, a second metal layer M2, a flat layer 22, a third metal layer M3, a first insulating layer 24, a common electrode layer 25, a second insulating layer 26, and a pixel electrode layer 27. A gate insulating layer is disposed between the second metal layer M2 and the first metal layer M1, wherein the first metal layer M1 includes a gate 10 and a gate line (not shown) of the tft T for providing a scan signal to the pixel unit of the touch display panel, and the second metal layer M2 includes a source/drain and a data line 20 of the tft T for providing a data signal to the pixel unit of the touch display panel.
The planarization layer 2 is located between the third metal layer M3 and the second metal layer M2, and the third metal layer M3 includes a touch signal line 30, which is conducted to the corresponding touch electrode block 50 through the bridge structure 31 for transmitting a touch driving signal and a touch detection signal, i.e., the touch signal line 30 and the third metal layer M3 are formed on the same layer.
The first insulating layer 24 is located between the third metal layer M3 and the common electrode layer 25, and serves to insulate and space the third metal layer M3 from the common electrode layer 25. The common electrode layer 25 includes a touch electrode block 50, and in the display time period, the touch electrode block 50 is reused as a common electrode to provide a common signal for the pixel unit of the touch display panel.
The second insulating layer 26 is located between the common electrode layer 25 and the pixel electrode layer 27, and serves to insulate and space the common electrode layer 25 from the pixel electrode layer 27. The pixel electrode layer 27 includes a bridge 310 of the bridge structure 31 and pixel electrodes 271, each pixel electrode 271 is located in a pixel unit of the touch display panel, is connected to a drain of the thin film transistor T through an interlayer via structure, and generates a horizontal electric field under the action of a common electrode to drive liquid crystal molecules to move, so as to display an image. That is, the bridge 310 of the bridge structure is formed in the same layer as the pixel electrode layer 27. The pixel electrode layer 27 and the common electrode layer 25 are made of a transparent conductive material such as Indium Tin Oxide (ITO) and indium zinc oxide (IZ 0).
The touch display panel further includes a single-layer via hole 311 and a double-layer via hole 312, the double-layer via hole 312 sequentially penetrates through the second insulating layer 26 and the first insulating layer 24 to expose the touch signal line 30, the single-layer via hole 311 penetrates through the second insulating layer 26 to expose the touch electrode block 50, and the bridge 310 of the bridge-spanning structure fills the single-layer via hole 311 and the double-layer via hole 312. Specifically, the bridge spanning structure 31 includes a single-layer via hole 311, a double-layer via hole 312, and a bridge spanning structure 310 filling the single-layer via hole 311 and the double-layer via hole 312, so that the touch signal line 30 and the touch electrode block 50 are electrically connected together through the bridge spanning structure 31, and the touch detection signal is transmitted to the corresponding touch electrode block 50 through the touch signal line 30.
The auxiliary bridge structure 32 is located on the second portion 302 of the touch signal line 30 and located in the non-display area 12, as shown in fig. 4, 5 and 6, the auxiliary bridge structure 32 includes a first via hole 321, a second via hole 322, and an auxiliary bridge 320. The first via hole 321 and the second via hole 322 sequentially penetrate through the second insulating layer 26 and the first insulating layer 24 respectively to expose the touch signal line 30, the auxiliary bridge 320 and the pixel electrode layer 27 are formed on the same layer, and the first via hole 321 and the second via hole 322 are filled, that is, two ends of the auxiliary bridge 320 are simultaneously contacted with the touch signal line 30 through the first via hole 321 and the second via hole 322, the auxiliary bridge structure 32 can be formed synchronously with the bridge structure 31 located in the display area, and the manufacturing steps and the manufacturing cost cannot be increased.
The frame sealing adhesive 3 is formed along the boundary of the non-display region between the color film substrate and the array substrate to prevent the liquid crystal molecules from leaking and to bond the color film substrate and the array substrate to form a box.
According to the touch control display panel, the auxiliary bridge structure is arranged on the second part of the touch control signal line between the frame sealing glue and the display area, so that impurity ions diffused from the frame sealing glue are preferentially diffused to the non-display area where the auxiliary bridge structure is located, ion pollution generated by the frame sealing glue is locked, the number of the impurity ions entering the display area is reduced, and the line ghost phenomenon of the touch control display panel is improved.
Fig. 7 is a schematic view of another touch display panel according to an embodiment of the present invention, in which the touch display panel provided in this embodiment has a structure similar to that of the touch display panel shown in fig. 3, and includes a display area and a non-display area surrounding the display area; and a touch signal line 30 and a touch electrode block (not shown), wherein the touch signal line 30 is connected to the corresponding touch electrode block through a bridge structure (not shown), the touch signal line 30 includes a first portion 301 located in the display region 11 and a second portion 302 located in the non-display region 12, and the auxiliary bridge structure 32 is disposed on the second portion 302 of the touch signal line 30. The difference is that each touch signal line 30 is provided with two or more auxiliary bridge structures 32, in this embodiment, each touch signal line 30 is provided with three auxiliary bridge structures 32, and the three auxiliary bridge structures 32 are arranged along the row direction.
Further, the auxiliary bridge structure 32 on each touch signal line 30 includes a first auxiliary bridge structure 32a closest to the boundary line of the display area 11, and distances L1 between the first auxiliary bridge structures 32a on all touch signal lines 30 and the boundary line of the display area 11 are equal, that is, when the boundary line of the display area 11 close to the first auxiliary bridge structure 32a extends in the row direction and the touch signal lines 30 extend in the column direction, all the first auxiliary bridge structures 32a are arranged in the row direction.
Further, a distance L2 between two adjacent auxiliary bridge structures 32 on the same touch signal line 30 is equal to a distance L1 between the first auxiliary bridge structure 32a and a boundary line of the display area, or alternatively, distances between two adjacent auxiliary bridge structures 32 in a column direction on all touch signal lines 30 are equal, and all auxiliary bridge structures 32 are arranged in a matrix, so that the distribution of the auxiliary bridge structures in the column direction is denser.
In the embodiment, the plurality of rows and columns of auxiliary bridge-spanning structures are arranged on the second part of the touch signal line between the frame sealing glue and the display area, so that impurity ions diffused from the frame sealing glue are preferentially diffused to the non-display area where the auxiliary bridge-spanning structures are located, ion pollution generated by the frame sealing glue can be effectively locked, the number of the impurity ions entering the display area is reduced, and the line ghost phenomenon of the touch display panel is improved.
Fig. 8 is a schematic view of another touch display panel according to an embodiment of the present invention, in which the touch display panel provided in this embodiment has a structure similar to that of the touch display panel shown in fig. 3, and includes a display area and a non-display area surrounding the display area; and a touch signal line 30 and a touch electrode block (not shown), wherein the touch signal line 30 is connected to the corresponding touch electrode block through a bridge structure (not shown), the touch signal line 30 includes a first portion 301 located in the display region 11 and a second portion located in the non-display region 12, and an auxiliary bridge structure 32 is disposed on the second portion of the touch signal line 30. The difference lies in that: the second portion of each touch signal line 30 includes at least two branch signal lines (302a/302b/302c) extending along the extending direction of the touch signal line 30, in the present embodiment, the second portion of each touch signal line 30 includes three parallel branch signal lines 302a, 302b and 302c, one end of each of the three branch signal lines 302a, 302b and 302c is connected to the touch signal line 30 where the three branch signal lines are located through a first connection line S1, the other end of each of the three branch signal lines 302a, 302b and 302c is connected to the touch signal line 30 where the three branch signal lines are located through a second connection line S2, at least one auxiliary bridge structure 32 is disposed on each of the three branch signal lines, in the present embodiment, two auxiliary bridge structures 32 are disposed on each branch signal line, that is, six auxiliary bridge structures 32 are disposed on each touch signal line 30.
Further, the auxiliary bridge structure 32 on each branch signal line includes the first auxiliary bridge structure 32a closest to the boundary line of the display area 11, and the distances L1 between the first auxiliary bridge structures 32a on all branch signal lines and the boundary line of the display area 11 are equal, that is, when the boundary line of the display area 11 close to the first auxiliary bridge structure 32a extends in the row direction and the branch signal lines extend in the column direction, all the first auxiliary bridge structures 32a are arranged in the row direction.
Further, a distance L2 between two adjacent auxiliary bridge structures 32 on the same branch signal line is equal to a distance L1 between the first auxiliary bridge structure 32a and the boundary line of the display area, or alternatively, distances between two adjacent auxiliary bridge structures 32 in the column direction on all branch signal lines are equal, and all auxiliary bridge structures 32 are arranged in a matrix, so that a plurality of rows and a plurality of columns of auxiliary bridge structures are arranged between the frame sealing adhesive and the display area. The number of the auxiliary bridge spanning structures on a single touch signal line is increased, so that the auxiliary bridge spanning structures in the row direction are distributed more densely; meanwhile, the branch signal lines with the same extending direction as the touch signal lines are additionally arranged in the non-display area, and the auxiliary bridge spanning structures are arranged on the branch signal lines, so that the auxiliary bridge spanning structures in the row direction are more densely distributed.
In the embodiment, the plurality of rows and columns of auxiliary bridge-spanning structures are arranged on the second part of the touch signal line between the frame sealing glue and the display area, so that impurity ions diffused from the frame sealing glue are preferentially diffused to the non-display area where the auxiliary bridge-spanning structures are located, ion pollution generated by the frame sealing glue can be effectively locked, the number of the impurity ions entering the display area is reduced, and the line ghost phenomenon of the touch display panel is improved.
Fig. 9 is a schematic view of another touch display panel according to an embodiment of the present invention, in which the touch display panel provided in this embodiment has a structure similar to that of the touch display panel shown in fig. 8, and includes a display area and a non-display area surrounding the display area; the touch signal line 30 is connected to a corresponding touch electrode block through a bridge structure (not shown), the touch signal line includes a first portion located in the display area and a second portion located in the non-display area, and an auxiliary bridge structure (not shown) is disposed on the second portion of the touch signal line. The difference lies in that: in this embodiment, the touch display panel further includes a pixel unit P1 located in the display area 11 and a dummy pixel unit P2 located in the non-display area 12, and the auxiliary bridge-crossing structure is located in the area where the dummy pixel unit P2 is located, so that in this embodiment, the width of the non-display area 12 is not increased by the introduction of the auxiliary bridge-crossing structure, and the frame area of the touch display panel is not increased, which is suitable for narrow-frame design.
The invention provides a touch display panel which comprises a touch electrode block and a touch signal line which are correspondingly connected, wherein an auxiliary bridge-spanning structure is arranged on a second part of the touch signal line, which is positioned between frame sealing glue and a display area, so that impurity ions diffused from the frame sealing glue are preferentially diffused to a non-display area where the auxiliary bridge-spanning structure is positioned, the ion pollution generated by the frame sealing glue can be more effectively locked, the quantity of the impurity ions entering the display area is reduced, and the line ghost phenomenon of the touch display panel is further improved.
Furthermore, the embodiment of the invention also provides a touch display device, which comprises the touch display panel. The touch display device can be any product or component with a display function, such as a mobile phone, a tablet personal computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (12)
1. A touch display panel comprises a display area and a non-display area arranged around the display area; and
the touch electrode block is positioned in the display area;
the touch signal lines are connected with the corresponding touch electrode blocks through a bridge-spanning structure;
it is characterized in that the preparation method is characterized in that,
the touch signal lines comprise a first part positioned in the display area and a second part positioned in the non-display area, and an auxiliary bridge spanning structure is arranged on the second part of at least one touch signal line;
the first part and the second part of the touch signal line are contacted;
the non-display area comprises a frame rubber area, the frame rubber area is positioned at the edge of the non-display area far away from the display area, and the auxiliary bridge spanning structure is arranged between the frame rubber area and the display area;
the auxiliary bridge spanning structure is used for adsorbing ion pollution of the frame rubber area.
2. The touch display panel according to claim 1, wherein at least one auxiliary bridge structure is disposed on each of the touch signal lines.
3. The touch display panel according to claim 2, wherein each of the touch signal lines has one auxiliary bridge structure disposed thereon, and distances between all the auxiliary bridge structures and a boundary line of the display area are equal.
4. The touch display panel according to claim 2, wherein at least two auxiliary bridge structures are disposed on each of the touch signal lines, and all of the touch signal lines have the same number of auxiliary bridge structures.
5. The touch display panel according to claim 4, wherein the second portion of the touch signal lines includes at least two branch signal lines extending along an extending direction of the touch signal lines, and two ends of the at least two branch signal lines are respectively connected to the second connecting line through the first connecting line and the touch signal lines where the at least two branch signal lines are located;
the auxiliary bridge spanning structure is located on the branch signal line, and each branch signal line is provided with the auxiliary bridge spanning structure.
6. The touch display panel according to claim 5, wherein the same number of auxiliary bridge structures are disposed on the at least two branch signal lines of the same touch signal line.
7. The touch display panel according to claim 4, 5 or 6, wherein the auxiliary bridge structure closest to the boundary line of the display area on each of the touch signal lines is a first auxiliary bridge structure, and distances between all the first auxiliary bridge structures and the boundary line of the display area are equal;
distances between the two auxiliary bridge spanning structures adjacent to each other in the column direction on all the touch signal lines are equal.
8. The touch display panel according to claim 1, further comprising:
an upper substrate;
a lower substrate; is arranged opposite to the upper substrate;
the frame sealing glue is positioned in the non-display area and between the upper substrate and the lower substrate;
the second part of the touch signal line is positioned between the frame sealing glue and the display area.
9. The touch display panel of claim 8, wherein the lower substrate comprises:
the third metal layer is arranged on the same layer as the touch signal line;
the common electrode layer is arranged on the same layer with the touch electrode block;
a pixel electrode layer;
the third metal layer and the common electrode layer are insulated and spaced through a first insulating layer, and the pixel electrode layer and the common electrode layer are insulated and spaced through a second insulating layer.
10. The touch display panel according to claim 9, wherein the auxiliary bridge-spanning structure comprises a first via hole, a second via hole and a bridge-spanning structure, and the bridge-spanning structure and the pixel electrode are formed on the same layer;
the first via hole and the second via hole respectively penetrate through the second insulating layer and the first insulating layer in sequence to expose the touch signal line, and the first via hole and the second via hole are filled in the bridge spanning mode.
11. The touch display panel according to claim 1, wherein the touch display panel includes dummy pixel units located in the non-display area, and the auxiliary bridge structure is located in an area where the dummy pixel units are located.
12. A touch display device comprising the touch display panel according to any one of claims 1 to 11.
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| US11188169B2 (en) | 2017-05-24 | 2021-11-30 | Infovision Optoelectronics (Kunshan) Co., Ltd. | Touch display panel and touch display device with switchable viewing angles |
| CN106940500A (en) * | 2017-05-24 | 2017-07-11 | 厦门天马微电子有限公司 | Array base palte, display panel, the driving method of display device and array base palte |
| CN109976047B (en) * | 2018-01-02 | 2021-03-16 | 京东方科技集团股份有限公司 | Touch electrode structure, touch substrate, preparation method, display panel and device |
| CN108646451B (en) * | 2018-04-28 | 2021-07-30 | 上海中航光电子有限公司 | Display panel and display device |
| JP7077145B2 (en) * | 2018-05-30 | 2022-05-30 | 株式会社ジャパンディスプレイ | Display device |
| CN111755465B (en) * | 2020-06-30 | 2022-09-23 | 厦门天马微电子有限公司 | Display module and display device |
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