CN108549170B - Display panel and electronic equipment - Google Patents
Display panel and electronic equipment Download PDFInfo
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- CN108549170B CN108549170B CN201810558083.4A CN201810558083A CN108549170B CN 108549170 B CN108549170 B CN 108549170B CN 201810558083 A CN201810558083 A CN 201810558083A CN 108549170 B CN108549170 B CN 108549170B
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- 239000002184 metal Substances 0.000 claims abstract description 20
- 239000010409 thin film Substances 0.000 claims description 14
- 230000008054 signal transmission Effects 0.000 abstract description 11
- 230000003071 parasitic effect Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 9
- 239000004065 semiconductor Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010408 film Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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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
- 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
- G02F1/133345—Insulating layers
-
- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134336—Matrix
-
- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136277—Active matrix addressed cells formed on a semiconductor substrate, e.g. of silicon
-
- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
-
- 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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- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
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- Human Computer Interaction (AREA)
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Abstract
The invention provides a display panel and electronic equipment, wherein a data line and a first touch signal line are arranged on the same layer on one side of a first surface of a substrate of the display panel, and the data line and the first touch signal line are staggered with each other, so that both parasitic capacitance and resistance on the touch signal line are reduced. In addition, in the scheme, the first touch signal line is electrically connected with the second touch signal line, so that the signal transmission on the touch signal line is more uniform. On the basis, the virtual touch signal line is electrically connected with the touch electrode, the impedance of the touch electrode is far greater than that of metal, the signal transmission impedance of the touch electrode can be reduced after the virtual touch signal line and the touch electrode are connected, the signal identification efficiency is improved, and due to the fact that the virtual touch signal line and the touch electrode are electrically connected through the through holes, the number of the through holes corresponding to the touch electrode is increased, the through holes are distributed uniformly relatively, and the problem of poor picture uniformity is solved.
Description
Technical Field
The present invention relates to the field of liquid crystal display technologies, and in particular, to a display panel and an electronic device.
Background
With the rapid development of display panels, a display panel integrating touch and control has become a development trend. In general, a display panel includes a substrate on which a plurality of touch electrodes are disposed in an array, and a plurality of gate lines and a plurality of data lines are disposed on the substrate, the gate lines and the data lines intersect to define a plurality of sub-pixels arranged in a matrix, and one touch electrode may correspond to the plurality of sub-pixels.
Specifically, each sub-pixel corresponds to one transistor, the control end of each transistor is connected with a gate line, selection is performed through the gate line, and then the sub-pixels are lighted through a data line. The touch electrode senses the touch action of a user, and receives and sends signals through the touch signal line so as to realize the identification of the touch position on the display panel.
The inventor finds that, in the current display panel, the touch signal lines are generally disposed above the data lines in a direction perpendicular to the display plane of the display panel, and the arrangement mode makes the parasitic capacitance and the resistance on the touch signal lines larger, which results in lower touch signal identification efficiency. In addition, the touch electrode is only electrically connected with the preset touch wire through the via hole and is insulated from other touch wires, so that the problems of visible via holes and poor picture uniformity of the whole display panel occur.
Therefore, it is an urgent technical problem to be solved by those skilled in the art how to provide a display panel and an electronic device, which can improve the recognition efficiency of touch signals and the uniformity of the display panel.
Disclosure of Invention
In view of the above, the present invention provides a display panel to solve the problems of low touch signal recognition efficiency and poor via hole visibility uniformity in the current display panel.
In order to achieve the purpose, the invention provides the following technical scheme:
a display panel, comprising:
a substrate having a first surface;
the data line and the first touch signal line are arranged on one side of the first surface, are positioned on the same layer of first metal layer, are insulated from each other and extend in a first direction parallel to the first surface;
a first insulating layer disposed between the data line and the gate line;
a second insulating layer disposed on the data line and the first touch signal line;
the virtual touch signal line and the second touch signal line are arranged on the surface of the second insulating layer and are positioned on the same second metal layer;
along a second direction perpendicular to the first surface, a part of the virtual touch signal lines are positioned above the data lines, a part of the second touch signal lines are positioned above the first touch signal lines, and the first touch signal lines are electrically connected with the second touch signal lines;
a third insulating layer disposed on the virtual touch signal line and the second touch signal line;
the third insulating layer is provided with a plurality of touch control electrodes, and the virtual touch control signal line is electrically connected with the touch control electrodes.
Optionally, the touch electrodes are arranged in an array, each row includes m touch electrodes, and m is greater than or equal to 2;
each row of the touch electrodes is correspondingly provided with m × n touch wires, the touch wires comprise the first touch signal wires and the second touch signal wires, each touch electrode is electrically connected with the corresponding n touch wires and is mutually insulated from other touch wires, and n is a positive integer.
Optionally, the touch trace electrically connected to the touch electrode is a first trace, and the touch trace insulated from the same touch electrode is a second trace;
and a hollow part is arranged at the intersection part of the touch electrode and the second routing wire.
Optionally, the touch electrode corresponds to a plurality of gate line groups arranged in parallel and a plurality of data lines arranged in parallel, and the gate line groups include a first gate line and a second gate line;
the first gate line, the second gate line and the data line are intersected to define a plurality of pixel units which are arranged in an array mode, and each pixel unit is provided with a thin film transistor;
the thin film transistors comprise grids, source electrodes and drain electrodes, the grids of the thin film transistors in the same row in the pixel unit are connected with the same first grid line, the grids of the thin film transistors in the other row are connected with the same second grid line, the source electrodes of the thin film transistors in two adjacent rows are connected with the same data line, the drain electrodes are connected with the pixel electrodes, and the first touch signal line is located between the two adjacent data lines and is electrically connected with one touch electrode.
Optionally, the method further includes:
a fourth insulating layer disposed on the touch electrode;
and a shading block corresponding to the virtual touch signal line and/or the second touch signal line is arranged on one side of the fourth insulating layer, which is far away from the virtual touch signal line.
Optionally, along the first direction, a width of a light shielding block corresponding to the second touch signal line is less than or equal to a width of a light shielding block corresponding to the virtual touch signal line.
Optionally, along the first direction, a width of a light shielding block corresponding to the virtual touch signal line is less than or equal to a width of the touch electrode corresponding to the virtual touch signal line.
Optionally, along the first direction, the width of the light shielding block corresponding to the virtual touch signal line is 5-7 um.
Optionally, along the second direction, a projection width of the virtual touch signal line on the substrate is the same as a projection width of the data line on the substrate, and a projection width of the second touch signal line on the substrate is the same as a projection width of the first touch signal line on the substrate.
An electronic device comprising any of the above display panels.
Compared with the prior art, the technical scheme provided by the invention has the following advantages:
the invention provides a display panel, which comprises a substrate, wherein the substrate is provided with a first surface, one side of the first surface is provided with a data line and a first touch signal line, the data line and the first touch signal line are positioned on the same first metal layer, and the data line and the first touch signal line are insulated from each other and extend along a first direction parallel to the first surface. Because the data line and the first touch signal line are staggered, parasitic capacitance and resistance on the touch signal line are reduced, and the recognition efficiency of the touch signal is improved. In addition, in the display panel, a first insulating layer is disposed on the data lines and the first touch signal lines, and a virtual touch signal line and a second touch signal line are disposed on a surface of the first insulating layer, wherein the virtual touch signal line and the second touch signal line are located on a same second metal layer. And along a second direction perpendicular to the first surface, a part of the virtual touch signal lines are located above the data lines, a part of the second touch signal lines are located above the first touch signal lines, and the first touch signal lines are electrically connected with the second touch signal lines. Therefore, in the scheme, the first touch signal line is electrically connected with the second touch signal line, so that the signal transmission on the touch signal line is more uniform. On this basis, the display panel provided in this embodiment further includes a second insulating layer disposed on the virtual touch signal line and the second touch signal line, wherein the second insulating layer is disposed with a plurality of touch electrodes, and the virtual touch signal line is electrically connected to the touch electrodes. Because the impedance of the touch electrode (semiconductor) is far greater than that of metal, the scheme can reduce the signal transmission impedance of the touch electrode and improve the identification efficiency of the touch signal after the touch electrode is connected with the virtual touch signal line. In addition, as the virtual touch signal line is electrically connected with the touch electrode through the via hole, the number of the via holes corresponding to the touch electrode is increased, the via holes are distributed relatively uniformly, and the problem of poor uniformity of a picture is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a display panel in the prior art;
FIG. 2 is a schematic diagram of another structure of a display panel in the prior art;
FIG. 3 is a top view of a display panel according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of the area A in FIG. 3;
fig. 5 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a pixel sub-unit corresponding to each row of touch electrodes in FIG. 6;
fig. 8 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As described in the background art, referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel in the prior art, the display panel defines a plurality of pixel sub-units 13 arranged in an array by intersecting a plurality of gate lines 11 and a plurality of data lines 12(12a, 12a1, 12b), each pixel sub-unit corresponds to a transistor, the control terminals of the transistors corresponding to each row of pixel sub-units are all connected to the same gate line, the input terminals (source or drain) of the transistors corresponding to each column of pixel sub-units are all connected to the same data line, and the output terminals are connected to the pixel electrodes. Specifically, the input terminals of the transistors are connected to the corresponding data lines through the vias 14 a.
The display panel further includes a plurality of touch electrodes, such as 15a, 15b, and 15c, arranged in an array, each touch electrode may correspond to a plurality of pixel sub-units 13, for example, twelve pixel sub-units for each touch electrode, each touch electrode is electrically connected to at least one touch signal line and insulated from other touch signal lines, for example, the touch electrode 15a is electrically connected to the touch signal line 16a and insulated from the touch signal line 16b and the touch signal line 16 c. For another example, the touch electrode 15b is electrically connected to the touch signal line 16b, and is insulated from the touch signal line 16a and the touch signal line 16 c. Similarly, the touch electrode 15c is electrically connected to the touch signal line 16c, and is insulated from the touch signal line 16a and the touch signal line 16 b. Specifically, the touch electrodes are connected to corresponding touch signal lines through at least one via hole 14b, for example, each touch electrode in the figure may be connected to a touch signal line through three via holes 14 b.
As can be seen from the figure, the vias 14b are arranged in a diagonally downward direction from left to right across the display panel, as shown by the extending direction of the oblique line 17 in fig. 2, which results in the phenomena of via visibility and poor picture uniformity across the display panel.
In addition, in conjunction with fig. 1, the inventor found that in the current display panel, the touch signal lines and the data lines are overlapped with each other, that is, the touch data lines are located above the data lines in a direction perpendicular to the display panel, for example, the touch data lines 16a are located on the upper layer of the data lines 12a, and the projection of the touch data lines 16a on the display panel covers the projection of the data lines 12a on the display panel. Due to the position relation between the touch data lines and the data lines, both touch parasitic capacitance and touch resistance on the touch data lines are large, and interference on signals transmitted by the touch data lines is caused.
To this end, an embodiment of the present invention provides a display panel, which can solve the problems of poor image uniformity and large touch parasitic capacitance and touch resistance caused by visible through holes of the display panel, and specifically, please refer to fig. 3 and fig. 4, where fig. 3 is a top view of the display panel provided in the embodiment of the present invention, fig. 4 is a cross-sectional view corresponding to a region a in fig. 3, and the display panel includes:
a substrate 300 having a first surface;
the data line 12 and the first touch signal line 16 are disposed on one side of the first surface, and the data line 12 and the first touch signal line 16 are located on the same metal layer, insulated from each other, and both extend in a first direction Y parallel to the first surface.
And a second insulating layer 302 disposed on the data line 12 and the first touch signal line 16, wherein the data line 12 and the first touch signal line 16 are independent of each other and the second insulating layer 302 is filled therebetween. The first insulating layer 301 is an insulating layer between the gate line and the data line 12.
The touch panel comprises a virtual touch signal line 18, a second touch signal line 19 and a pixel electrode 20 which are arranged on the surface of the second insulating layer 302, wherein the virtual touch signal line 18 and the second touch signal line 19 are located in the same second metal layer. In the structure shown in fig. 4, the pixel electrode 20 is located at the same layer as the virtual touch signal line 18, but in an actual structure, the pixel electrode 20 may be located at a different layer from the virtual touch signal line 18. Specifically, an insulating layer is disposed between the pixel electrode 20 and the virtual touch signal line 18, and the virtual touch signal line 18 is located on a side of the pixel electrode 20 away from the substrate 300.
In a second direction Z perpendicular to the first surface, a part of the dummy touch signal lines 18 is located above the data lines 12, a part of the second touch signal lines 19 is located above the first touch signal lines 16, and the first touch signal lines 16 are electrically connected to the second touch signal lines 19.
A third insulating layer 303 disposed on the dummy touch signal line 18 and the second touch signal line 19;
a plurality of touch electrodes 15 are disposed on the third insulating layer 303, and the virtual touch signal line 18 is electrically connected to the touch electrodes 15.
In this embodiment, the first metal layer and the second metal layer may be metal layers of the same material or metal layers of different materials.
In combination with the structure of the display panel provided in this embodiment, since the data line and the first touch signal line are located on the same layer and are staggered with each other in this scheme, corresponding to fig. 3, the touch signal line 16 is disposed between the two data lines 12, so that both the parasitic capacitance and the resistance on the touch signal line are reduced, and the recognition efficiency of the touch signal is further improved.
In addition, in a second direction Z perpendicular to the first surface, part of the virtual touch signal lines 18 are located above the data lines 12, and since the virtual touch signal lines 18 are electrically connected with the touch electrodes 15 through via holes, the number of via holes corresponding to the touch electrodes is increased, so that the via holes are distributed relatively uniformly, and the problem of poor uniformity of the screen is solved.
In addition, in the present embodiment, since the first touch signal line is electrically connected to the second touch signal line, the signal transmission on the touch signal line can be more uniform. On this basis, the display panel provided in this embodiment further has a third insulating layer disposed on the virtual touch signal lines and the second touch signal lines, the third insulating layer has a plurality of touch electrodes, and a portion of the virtual touch signal lines is electrically connected to the touch electrodes. Because the impedance of the touch electrode (semiconductor) is far greater than that of metal, for example, the impedance of ITO is 40 Ω, and the impedance of metal is 0.2 Ω, the scheme can reduce the signal transmission impedance of the touch electrode and improve the recognition efficiency of the touch signal after connecting the touch electrode with the virtual touch signal line.
Specifically, since the virtual touch signal line 18 in the display panel is electrically connected to the touch electrode 15 through the via hole, a picture as shown in fig. 5 can be displayed in the display panel, that is, in the same touch electrode 15, the touch signal line 16 is electrically connected to the touch electrode 15 through the via hole, and the touch electrode 15 is simultaneously electrically connected to the virtual touch signal line 18 through the via hole. Since the via hole is also formed between the virtual touch signal line 18 and the touch electrode 15, the via hole on the touch electrode can be uniformly displayed by setting the positions of the virtual signal trace and the via hole of the touch electrode, that is, on the basis of the above embodiments, the problem of poor visibility uniformity of the via hole on the display screen is further improved.
It should be noted that, in order to clearly show the specific structure of the embodiment of the present invention, only the structure on the array substrate is given in the present application. In practical application, the display panel further comprises a color film substrate and a liquid crystal layer; or, the light-emitting device further comprises a luminescent material layer and an encapsulation layer.
On the basis of the foregoing embodiment, it is assumed that in the display panel provided in the embodiment of the present invention, the plurality of touch electrodes are arranged in an array, and each row includes m touch electrodes, where m is greater than or equal to 2. And m × n touch tracks are correspondingly arranged on each row of touch electrodes. It should be noted that each touch electrode may be electrically connected to at least one touch trace and insulated from other touch traces, so n is a positive integer greater than or equal to 1, for example, each touch electrode may be electrically connected to two touch traces. In addition, in combination with the above structure of the display panel in the present embodiment, the touch trace includes the first touch signal line and the second touch signal line, and in the direction Z perpendicular to the display panel, since the first touch signal line is disposed below the second touch signal line, in a top view of the display panel, n touch traces are present on each touch electrode.
For example, as shown in fig. 6, the display panel assumes that each column includes 3 touch electrodes, i.e., m is 3, and each touch electrode may be provided with at least one touch trace, for example, it is assumed that each touch electrode in the figure is electrically connected to one touch trace. Accordingly, the touch trace 16 and the touch electrode 15 are electrically connected through the second via hole 14b, and then, in order to ensure the uniformity of the display panel, a third via hole 14c corresponding to the second via hole 14b may be disposed on the touch electrode, where the third via hole 14c is a connection point of the touch electrode 15 and the virtual touch trace 18.
In this embodiment, the touch traces electrically connected to the touch electrodes are defined as first traces, such as the touch trace 16a in the figure, and the touch traces insulated from the same touch electrode are defined as second traces, such as the touch traces 16b and 16c in the figure. Furthermore, in order to improve the transmission capability of the touch signal, a hollow portion 19 may be disposed at a portion where the touch electrode intersects with the second trace, so as to reduce the area of the semiconductor, and achieve the effect of reducing the parasitic capacitance of the touch electrode. In this embodiment, the shape of the hollow portion is not limited, and may be a rectangle as shown in the figure, or may be an irregular pattern. Accordingly, the schematic structural diagram of the pixel sub-unit corresponding to each row of touch electrodes is shown in fig. 7, and a hollow portion is disposed at a position corresponding to a touch signal line insulated from the touch electrode. The touch electrode is provided with a hollow part at the corresponding position of the touch signal line, so that parasitic capacitance can be reduced, and touch sensitivity is improved.
On the basis of the foregoing embodiments, an embodiment of the present invention further provides a specific implementation structure of a display panel, as shown in fig. 8, the display panel includes a plurality of touch electrodes arranged in an array, each touch electrode corresponds to a plurality of gate line groups arranged in parallel and a plurality of data lines arranged in parallel, where the gate line groups include a first gate line 11a and a second gate line 11 b.
Specifically, the first gate line, the second gate line and the data line intersect to define a plurality of pixel units 13 arranged in an array, and each pixel unit is provided with a thin film transistor; the thin film transistor includes a gate electrode, a source electrode, and a drain electrode. In the pixel unit, the gates of the tfts in the same row are connected to the same first gate line 11a, the gates of the tfts in the other row are connected to the same second gate line 11b, the sources of the tfts in two adjacent rows are connected to the same data line, the drain is connected to the pixel electrode, and the first touch signal line 16 is located between two adjacent data lines 12 and electrically connected to one touch electrode 15.
In this embodiment, there are various positions of the first gate line and the second gate line in the gate line group, and as shown in fig. 8, the first gate line and the second gate line are respectively disposed below each row of pixel units. In addition, as shown in fig. 3, the first gate line and the second gate line may be disposed below the first row of pixel units in parallel and adjacent to each other, and the first gate line and the second gate line of the second group of gate lines may be disposed below the second row of pixel units. Of course, the arrangement positions of the gate lines are only examples, and other arrangement modes may be provided according to actual design requirements, which are not described in detail herein.
However, the working principle of the pixel unit in the display panel is the same regardless of the arrangement position of the gate line group, as follows:
the pixel units in the first row are selected through the first gate line in the first gate line group, the pixel units in the second row are selected through the second gate line in the first gate line group, and then data signals are transmitted through the data lines. Similarly, the third row of pixel cells is selected by the first gate line in the second gate line group, the fourth row of pixel cells is selected by the second gate line in the second gate line group, and the data signal is transmitted through another data line. It should be noted that, in such a connection structure, two laterally adjacent thin film transistors in two columns of pixel units located at two sides of the same data line need to be set as a high-level conducting transistor and a low-level conducting transistor, so as to ensure that only one pixel unit can be gated at a certain time.
In addition, in this embodiment, a manner of connecting two gate lines to each row of pixel units is preferably adopted, that is, each row of pixel units needs to be provided with a first gate line and a second gate line, specifically, the first gate line is connected to gates of transistors in pixel units in odd columns in the row, the second gate line is connected to gates of transistors in pixel units in even columns in the row, sources of transistors in pixel units in adjacent odd columns and pixel units in even columns are both connected to the same data line, and then the touch signal line is arranged between the pixel units in adjacent even columns and the pixel units in odd columns.
For example, referring to fig. 3, in the display panel, each row of pixel units needs to be provided with a first gate line 11a and a second gate line 11b, specifically, the first gate line is connected to gates of transistors in pixel units in odd columns in the row, the second gate line is connected to gates of transistors in pixel units in even columns in the row, sources of transistors in pixel units in adjacent odd columns and pixel units in even columns are both connected to the same data line 12, then a touch signal line 16 is provided between pixel units in adjacent even columns and pixel units in odd columns, and a virtual touch signal line 18 is provided between pixel units in adjacent odd columns and pixel units in even columns.
The working principle is that the pixel units in odd columns are selected by the first gate line, the pixel units in even columns are selected by the second gate line, and data transmission between the adjacent pixel units in odd columns and the adjacent pixel units in even columns is carried out through the data lines. The data transmission of different pixel units is realized by controlling the signals transmitted on the first gate line and the second gate line, for example, the first gate line transmits a high level signal, the second gate line transmits a low level signal or no signal transmission, and at this time, assuming that transistors in the pixel units are all switching devices which are turned on at a high level, then the transistor connected with the first gate line is turned on, and when a signal is present on the data line, the data signal can be transmitted to the pixel electrode so as to light the pixel unit.
Therefore, in the display panel provided by the embodiment, the data lines and the first touch signal lines are staggered, so that the parasitic capacitance and the resistance of the touch signal lines are reduced, and the recognition efficiency of the touch signal is improved. And through setting up virtual touch-control line for the via hole on the touch-control electrode arranges evenly, has solved the poor problem of picture homogeneity.
In addition, in the display panel, the first touch signal line is electrically connected with the second touch signal line, so that the signal transmission on the touch signal line is more uniform. On the basis, the virtual touch signal line is electrically connected with the touch electrode, and the impedance of the touch electrode (semiconductor) is far greater than that of metal, so that the signal transmission impedance of the touch electrode can be reduced after the touch electrode is connected with the virtual touch signal line, and the recognition efficiency of the touch signal is further improved.
Referring to fig. 9, fig. 9 is a cross-sectional view of a portion B in fig. 7, and based on the foregoing embodiment, the display panel provided in this embodiment may further include:
a fourth insulating layer 304 disposed on the touch electrode, and a light shielding block 21 disposed on a side of the fourth insulating layer away from the virtual touch signal line and corresponding to the virtual touch signal line and/or the second touch signal line. The shading block is arranged on a color film substrate in the display panel and used for shading the thin film transistor.
Specifically, in this embodiment, the arrangement widths of the light-shielding blocks and the data lines are further defined, for example, along the second direction Y, the width of the light-shielding block corresponding to the second touch signal line 19 is smaller than or equal to the width of the light-shielding block corresponding to the virtual touch signal line 18. For example, along the second direction Y, the width of the light-shielding block corresponding to the virtual touch signal line may be set to 5-7um, and then the width of the light-shielding block corresponding to the second touch signal line may be smaller than 5 um.
In addition, along the second direction Y, the width of the light shielding block 21 corresponding to the virtual touch signal line 18 is less than or equal to the width of the touch electrode 15 corresponding to the virtual touch signal line 18. Along the second direction, the projection width of the virtual touch signal line 18 on the substrate is the same as the projection width of the data line 12 on the substrate, and the projection width of the second touch signal line 19 on the substrate is the same as the projection width of the first touch signal line 16 on the substrate.
On the basis of the foregoing embodiments, the present embodiment further provides an electronic device including any one of the foregoing display panels, and the working principle thereof refers to the foregoing embodiments of the display panels.
In summary, the display panel provided by the present invention includes a substrate having a first surface, and a data line and a first touch signal line are disposed on one side of the first surface, wherein the data line and the first touch signal line are located on a same first metal layer, and are insulated from each other and both extend in a first direction parallel to the first surface. Because the data line and the first touch signal line are staggered, parasitic capacitance and resistance on the touch signal line are reduced, and the recognition efficiency of the touch signal is improved. In addition, in the display panel, a first insulating layer is disposed on the data lines and the first touch signal lines, and a virtual touch signal line and a second touch signal line are disposed on a surface of the first insulating layer, wherein the virtual touch signal line and the second touch signal line are located on a same second metal layer. And along a second direction perpendicular to the first surface, a part of the virtual touch signal lines are located above the data lines, a part of the second touch signal lines are located above the first touch signal lines, and the first touch signal lines are electrically connected with the second touch signal lines. Therefore, in the scheme, the first touch signal line is electrically connected with the second touch signal line, so that the signal transmission on the touch signal line is more uniform. On this basis, the display panel provided in this embodiment further includes a second insulating layer disposed on the virtual touch signal line and the second touch signal line, wherein the second insulating layer is disposed with a plurality of touch electrodes, and the virtual touch signal line is electrically connected to the touch electrodes. Because the impedance of the touch electrode (semiconductor) is far greater than that of metal, the scheme can reduce the signal transmission impedance of the touch electrode and improve the identification efficiency of the touch signal after the touch electrode is connected with the virtual touch signal line. In addition, as the virtual touch signal line is electrically connected with the touch electrode through the via hole, the number of the via holes corresponding to the touch electrode is increased, the via holes are distributed relatively uniformly, and the problem of poor uniformity of a picture is solved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A display panel, comprising:
a substrate having a first surface;
the data line and the first touch signal line are arranged on one side of the first surface, are positioned on the same layer of first metal layer, are insulated from each other and extend in a first direction parallel to the first surface;
a first insulating layer disposed between the data line and the gate line;
a second insulating layer disposed on the data line and the first touch signal line;
the virtual touch signal line and the second touch signal line are arranged on the surface of the second insulating layer and are positioned on the same second metal layer;
along a second direction perpendicular to the first surface, part of the virtual touch signal lines are positioned above the data lines, part of the second touch signal lines are positioned above the first touch signal lines, and the first touch signal lines are electrically connected with the second touch signal lines so as to enable signals on the touch signal lines to be transmitted uniformly;
a third insulating layer disposed on the virtual touch signal line and the second touch signal line;
the third insulating layer is provided with a plurality of touch control electrodes, and the virtual touch control signal line is electrically connected with the touch control electrodes.
2. The display panel according to claim 1, wherein the touch electrodes are arranged in an array, each row includes m touch electrodes, and m is greater than or equal to 2;
each row of the touch electrodes is correspondingly provided with m × n touch wires, the touch wires comprise the first touch signal wires and the second touch signal wires, each touch electrode is electrically connected with the corresponding n touch wires and is mutually insulated from other touch wires, and n is a positive integer.
3. The display panel according to claim 2, wherein the touch trace electrically connected to the touch electrode is a first trace, and the touch trace insulated from the same touch electrode is a second trace;
and a hollow part is arranged at the intersection part of the touch electrode and the second routing wire.
4. The display panel according to claim 3, wherein the touch electrodes correspond to a plurality of gate line groups arranged in parallel and a plurality of data lines arranged in parallel, and the gate line groups include a first gate line and a second gate line;
the first gate line, the second gate line and the data line are intersected to define a plurality of pixel units which are arranged in an array mode, and each pixel unit is provided with a thin film transistor;
the thin film transistors comprise grids, source electrodes and drain electrodes, the grids of the thin film transistors in the same row in the pixel unit are connected with the same first grid line, the grids of the thin film transistors in the other row are connected with the same second grid line, the source electrodes of the thin film transistors in two adjacent rows are connected with the same data line, the drain electrodes are connected with the pixel electrodes, and the first touch signal line is located between the two adjacent data lines and is electrically connected with one touch electrode.
5. The display panel according to claim 1, further comprising:
a fourth insulating layer disposed on the touch electrode;
and a shading block corresponding to the virtual touch signal line and/or the second touch signal line is arranged on one side of the fourth insulating layer, which is far away from the virtual touch signal line.
6. The display panel according to claim 5, wherein:
and along the first direction, the width of the shading block corresponding to the second touch signal line is less than or equal to that of the shading block corresponding to the virtual touch signal line.
7. The display panel according to claim 6, wherein:
and along the first direction, the width of the shading block corresponding to the virtual touch signal line is less than or equal to the width of the touch electrode corresponding to the virtual touch signal line.
8. The display panel according to claim 6, wherein: and along the first direction, the width of the shading block corresponding to the virtual touch signal line is 5-7 um.
9. The display panel according to claim 1, characterized in that:
along the second direction, the projection width of the virtual touch signal line on the substrate is the same as the projection width of the data line on the substrate, and the projection width of the second touch signal line on the substrate is the same as the projection width of the first touch signal line on the substrate.
10. An electronic device, comprising: the display panel of any one of claims 1-9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109947304A (en) | 2019-03-19 | 2019-06-28 | 京东方科技集团股份有限公司 | A kind of touch base plate and touch screen |
| CN110071145A (en) * | 2019-04-08 | 2019-07-30 | 深圳市华星光电半导体显示技术有限公司 | Display panel and electronic equipment |
| CN110085190B (en) * | 2019-06-10 | 2021-08-24 | 北海惠科光电技术有限公司 | Array substrate and display panel |
| CN112363636B (en) * | 2020-10-27 | 2024-03-19 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN112198990B (en) * | 2020-11-12 | 2024-01-30 | 武汉华星光电半导体显示技术有限公司 | Touch panel and display device |
| CN112864199B (en) * | 2021-01-08 | 2022-12-06 | 武汉华星光电半导体显示技术有限公司 | Touch display panel and display device |
| CN113110766A (en) * | 2021-04-02 | 2021-07-13 | 武汉华星光电技术有限公司 | Touch display panel and touch display device |
| CN113672117B (en) * | 2021-08-03 | 2023-06-02 | 武汉华星光电半导体显示技术有限公司 | Display panel and mobile terminal |
| CN114740664B (en) * | 2022-04-21 | 2023-04-28 | 绵阳惠科光电科技有限公司 | Display panel and display screen |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205375439U (en) * | 2015-12-22 | 2016-07-06 | 上海天马微电子有限公司 | Embedded self-contained touch screen and display device |
| EP3130987A3 (en) * | 2015-08-14 | 2017-03-29 | LG Display Co., Ltd. | Touch sensor integrated display device and method for driving the same |
| CN107179622A (en) * | 2017-07-28 | 2017-09-19 | 上海中航光电子有限公司 | Touch-control display panel and touch control display apparatus |
-
2018
- 2018-06-01 CN CN201810558083.4A patent/CN108549170B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3130987A3 (en) * | 2015-08-14 | 2017-03-29 | LG Display Co., Ltd. | Touch sensor integrated display device and method for driving the same |
| CN205375439U (en) * | 2015-12-22 | 2016-07-06 | 上海天马微电子有限公司 | Embedded self-contained touch screen and display device |
| CN107179622A (en) * | 2017-07-28 | 2017-09-19 | 上海中航光电子有限公司 | Touch-control display panel and touch control display apparatus |
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