CN109445646B - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN109445646B CN109445646B CN201811648139.1A CN201811648139A CN109445646B CN 109445646 B CN109445646 B CN 109445646B CN 201811648139 A CN201811648139 A CN 201811648139A CN 109445646 B CN109445646 B CN 109445646B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
Abstract
The invention discloses a touch display panel and a touch display device, wherein the touch display panel comprises: the touch control device comprises a substrate, a plurality of touch control wires and a plurality of data wires, wherein the touch control wires and the data wires extend along a first direction; pixel units arranged in an array; the touch control device comprises a plurality of touch control electrodes, a plurality of pixel units and a plurality of touch control electrodes, wherein each touch control electrode covers the plurality of pixel units, each pixel unit comprises a plurality of sub-pixels, and at least one pixel unit has a sub-pixel which is provided with a gap area; each touch control routing comprises a plurality of extension parts, and the extension parts extend to the gap area; at least one extending part in each touch wire is electrically connected with the touch electrode through the through hole in the notch area, and the through hole penetrates through the insulating layer between the touch wire and the touch electrode. The invention provides a touch display panel and a touch display device, which are used for solving the problem of mutual interference between touch wires of different touch electrodes in the touch display panel.
Description
Technical Field
The invention relates to the technical field of display, in particular to a touch display panel and a touch display device.
Background
At present, a display device generally integrates a touch function and a display function, and a touch panel can be integrated On the display panel by an "On-cell" method or an "In-cell" method. Obviously, the embedded touch display panel integrating the touch function by adopting the In-cell method is lighter and thinner.
In the existing embedded touch display panel, a common electrode layer can be divided into a plurality of common electrodes, the common electrodes are electrically connected with at least one touch trace, the common electrodes are used for receiving common voltage signals in a display stage, and the common electrodes are reused as touch electrodes in a touch stage and used for outputting touch driving signals.
However, when the touch traces are disposed, if the touch traces and the data lines of the display panel are disposed on the same layer, the pixel aperture ratio of the display panel is relatively small, and therefore the touch traces and the data lines are disposed on different metal layers, but there is a possibility of mutual interference between the touch traces of different touch electrodes, which affects the detection of the touch signal.
Disclosure of Invention
The embodiment of the invention provides a touch display panel and a touch display device, and aims to solve the problem of mutual interference between touch wires of different touch electrodes in the touch display panel.
In a first aspect, an embodiment of the present invention provides a touch display panel, including:
a substrate base plate;
the touch control device comprises a substrate base plate, a plurality of touch control wires and a plurality of data wires, wherein the substrate base plate is provided with a plurality of touch control wires and a plurality of data wires, the touch control wires and the data wires extend along a first direction, the data wires and the touch control wires are arranged in different layers, the data wires are positioned on one side, away from the substrate base plate, of the touch control wires, and at least one data wire is overlapped with the touch control wires;
a plurality of pixel units arranged in an array;
the touch control device comprises a plurality of touch control electrodes, a plurality of touch control electrode groups and a plurality of pixel units, wherein each touch control electrode covers the plurality of pixel units, each pixel unit comprises a plurality of sub-pixels, and at least one sub-pixel in at least one pixel unit is provided with a notch area;
each touch routing line comprises a plurality of extension subsections, the extension directions of the extension subsections are different from the first direction, and the extension subsections extend to the notch area; at least one extension part in each touch wire is electrically connected with the corresponding touch electrode through a via hole arranged in the notch area, and the via hole penetrates through the insulating layer between the touch wire and the touch electrode.
Optionally, the color of the sub-pixels in each pixel unit provided with the gap region is the same, and the areas of the gap regions are the same.
Optionally, the sub-pixels in each pixel unit, which are provided with the gap area, are located in the same column.
Optionally, each color of the sub-pixels in the row of the sub-pixels provided with the gap area in each pixel unit is the same.
Optionally, a portion of the gap area is disposed in the sub-pixel adjacent to the touch trace.
Optionally, the touch trace further includes a virtual extension portion, the virtual extension portion and the extension portion are disposed on the same layer, and the virtual extension portion is electrically insulated from the touch electrode.
Optionally, each of the pixel units includes a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel; the third color sub-pixel comprises a gap area, the light-emitting area of the third color sub-pixel is lower than that of the first color sub-pixel, and the light-emitting area of the third color sub-pixel is lower than that of the second color sub-pixel; and part of the third color sub-pixels are arranged close to the touch-control routing, and the extension parts of the touch-control routing extend to the gap areas of the third color sub-pixels.
Optionally, the touch display panel further includes a plurality of gate lines, the gate lines are disposed between the touch traces and the data lines, a first insulating layer is disposed between the touch traces and the gate lines, and a second insulating layer is disposed between the gate lines and the data lines.
Optionally, the touch display panel includes a pixel electrode and a common electrode, and the common electrode is multiplexed with the touch electrode.
Optionally, the pixel electrode is located between the common electrode and the substrate base plate, a part of the pixel electrode includes a gap region, the common electrode includes a slit, and the slit of the common electrode is located in a vertical projection of the pixel electrode on the substrate base plate.
Optionally, the common electrode is located between the pixel electrode and the substrate, the pixel electrode includes a slit, and a portion of the pixel electrode includes a gap region.
In a second aspect, an embodiment of the present invention provides a touch display device, including the touch display panel provided in any embodiment of the present invention.
In the invention, data lines and touch control traces formed on a substrate are arranged in different layers, the data lines are positioned on one side of the touch control traces, which is far away from the substrate, at least one data line is overlapped with the touch control traces, pixel units arranged in an array mode and touch control electrodes covering the pixel units are arranged on the substrate, because the touch control traces need to be electrically connected with the touch control electrodes, each touch control trace is provided with a plurality of extension parts, the extension directions of the extension parts are different from the touch control traces, at least one sub-pixel of at least one pixel unit is provided with a notch area, the extension parts of the touch control traces extend to the notch area, at least one extension part of each touch control trace is connected with the touch control electrodes through via holes in the notch area, and the via holes penetrate through insulating layers between the touch control traces and the touch control electrodes. In the embodiment, under the condition that part of the data lines and the touch traces are overlapped, the touch traces are arranged on one side of the data lines close to the substrate, so that the data lines have a certain electric field shielding effect on interference generated between different touch traces above the touch traces, and the touch traces are electrically connected with the touch electrodes through the extension parts, thereby improving the touch detection precision of the touch display panel.
Drawings
FIG. 1 is a schematic diagram of a display panel in the prior art;
FIG. 2 is a schematic diagram of another prior art display panel;
fig. 3 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another touch display panel according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention;
FIG. 11 is a top view of a display panel according to an embodiment of the present invention;
FIG. 12 is a cross-sectional view of the touch display panel along line a-a' in FIG. 3;
FIG. 13 is a cross-sectional view of the touch display panel along the line b-b' in FIG. 3;
fig. 14 is a top view of a display panel according to an embodiment of the invention;
FIG. 15 is a cross-sectional view of the touch display panel along line a-a' in FIG. 3;
FIG. 16 is a cross-sectional view of the touch display panel along the line b-b' in FIG. 3;
fig. 17 is a schematic structural diagram of a touch display device according to an embodiment of the present 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.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a display panel in the prior art, and fig. 2 is a schematic structural diagram of another display panel in the prior art, wherein a substrate 1 of the display panel is provided with a plurality of gate lines 11 and data lines 12 arranged crosswise, and the gate lines 11 and the data lines 12 intersect to define a plurality of sub-pixels 14. When a display panel with a touch function is manufactured, the touch traces 13 may be disposed on the same layer as the data lines 12, for example, as shown in fig. 1, the touch traces 13 and the data lines 12 are disposed side by side, but this way, the aperture ratio of the display panel is easily small; therefore, in order to increase the aperture ratio of the display panel, the touch traces 13 may also be disposed in different layers from the data lines 12, as shown in fig. 2, the touch traces 13 are disposed on one side of the data lines 12 away from the substrate 1 and overlapped with at least one data line 12, although the aperture ratio of the display panel in fig. 2 is increased compared to the touch display panel in fig. 1, the touch traces 13 need to be connected to corresponding touch electrodes, and the touch traces 13 on different touch electrodes may interfere with each other to affect the accuracy of the touch signal detection.
In order to solve the problem that the touch traces 13 of different touch electrodes of the touch display panel interfere with each other, an embodiment of the present invention provides a touch display panel, including:
a substrate base plate;
the touch control device comprises a substrate base plate, a plurality of touch control wires and a plurality of data wires, wherein the touch control wires and the data wires extend along a first direction;
a plurality of pixel units arranged in an array;
the touch control device comprises a plurality of touch control electrodes, a plurality of pixel units and a plurality of touch control electrodes, wherein each touch control electrode covers the plurality of pixel units, each pixel unit comprises a plurality of sub-pixels, and at least one sub-pixel in at least one pixel unit is provided with a notch area;
each touch control routing comprises a plurality of extension subsections, the extension directions of the extension subsections are different from the first direction, and the extension subsections extend to the notch area; at least one extending part in each touch wire is electrically connected with the corresponding touch electrode through a through hole arranged in the notch area, and the through hole penetrates through the insulating layer between the touch wire and the touch electrode. The extension portion in this embodiment extends to the notch area, which means that at least a portion of the extension portion is located in the notch area; when the extension part extending to the gap area needs to be electrically connected with the corresponding touch electrode, the gap area needs to be provided with a via hole, and the via hole penetrates through all the insulating layers between the touch routing and the touch electrode so as to realize the electrical connection; when no extension subsection is formed in the gap area, or the extension subsection in the gap area does not need to be connected with a corresponding touch electrode, the gap area can be free of via hole arrangement.
In the touch display panel provided by the embodiment of the invention, the data lines and the touch traces formed on the substrate are arranged in different layers, the data lines are located on one side of the touch traces, which is far away from the substrate, at least one data line is overlapped with the touch traces, the substrate is provided with the pixel units arranged in an array manner and the touch electrodes covering the pixel units, because the touch traces need to be electrically connected with the touch electrodes, each touch trace is provided with a plurality of extension parts, the extension directions of the extension parts are different from those of the touch traces, at least one sub-pixel of at least one pixel unit is provided with a notch area, the extension parts of the touch traces extend to the notch area, at least one extension part of each touch trace is electrically connected with the touch electrodes through via holes arranged in the notch area, and the via holes penetrate through insulating layers between the touch traces and the touch electrodes. In this embodiment, under the condition that part of the data lines and the touch traces are overlapped, the touch traces are disposed on one side of the data lines close to the substrate, so that the data lines have a certain electric field shielding effect on interference generated between different touch traces above the touch traces, and the touch traces are electrically connected with the touch electrodes through the extension portions, thereby improving the detection accuracy of the touch signals of the touch display panel.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Fig. 3 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention, and referring to fig. 3, a plurality of touch traces 13 and a plurality of data lines 12 are disposed on a substrate base plate 1, and the data lines 12 and the touch traces 13 both extend along the first direction X, in this embodiment, the data lines 12 and the touch traces 13 are disposed in different layers, and the touch traces 13 are disposed on one side of the data lines 12 close to the substrate base plate 1, so that the data lines 12 can shield the interference between different touch traces 13, at least one data line 12 is disposed to overlap with the touch traces 13, and the touch trace 13 is provided with an extension branch 131 whose extension direction intersects with the first direction X, referring to fig. 3, in fig. 3, taking the rectangular extension portion 131 as an example, the extension direction of the extension portion 131 may be perpendicular to the first direction X, and the touch trace 13 may be electrically connected to the touch electrode 15 on the side of the touch trace 13 away from the substrate 1 through the extension portion 131.
The pixel units 16 are arranged in an array on the substrate 1, each pixel unit 16 includes a plurality of sub-pixels 14, at least one sub-pixel 14 of at least one pixel unit 16 is provided with a notch area 141, there is a sub-pixel 142 in the pixel unit 16 provided with the notch area 141, there is a sub-pixel 143 in the pixel unit 16 not provided with the notch area 141, and the notch area 141 may be provided in one or more of the plurality of sub-pixels 14 in the pixel unit 16, for example, if the pixel unit 16 includes a blue sub-pixel, a red sub-pixel and a green sub-pixel, the notch area 141 may be provided only in the blue sub-pixel of the pixel unit 16, or the notch area 141 may be provided in both the blue sub-pixel and the green sub-pixel. The extension portion 131 of the touch trace 13 extends into the gap 141. Each touch trace 13 includes a plurality of extension portions 131, at least one extension portion 131 of each touch trace 13 is electrically connected to the corresponding touch electrode 15 through a via hole in the notched area 141, for example, if 50 extension portions 131 are disposed on each touch trace 13, only 5 extension portions 131 can be selected from the extension portions 131 to be electrically connected to the corresponding touch electrode 15 through a via hole in the notched area 141. Each touch electrode 15 covers a plurality of pixel units in a direction perpendicular to the substrate 1, and each touch electrode 15 may be connected to a plurality of touch traces 13, but each touch trace 13 only corresponds to one touch electrode 15. Optionally, 4 to 6 extension sub-portions 131 of each touch trace 13 are electrically connected to the corresponding touch electrode 15 through via holes, so that the number of via holes is reduced while effective electrical connection between the touch trace 13 and the touch electrode 15 is ensured, and the purpose of saving the process cost is achieved.
Optionally, fig. 4 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention, and referring to fig. 4, in order to clearly illustrate the arrangement of the notch area 141 of each sub-pixel 14, the structure of the touch electrode 15 is not shown in fig. 4, the color of the sub-pixel 142 in each pixel unit 16, in which the notch area 141 is arranged, is the same, and the areas of the notch areas 141 are the same. The arrangement of the notch area 141 causes the problem of inconsistent light-emitting areas of the sub-pixels 14 on the display panel, the light-emitting area of the sub-pixel 142 provided with the notch area 141 is smaller than the light-emitting area of the sub-pixel 143 not provided with the notch area 141, and in order to ensure that the light-emitting areas of the sub-pixels 14 of the same color are consistent, avoid the problem of uneven light-emitting brightness of the sub-pixels of the same color in each display area on the display panel, and maintain good image display effect, the notch area 141 is arranged in the sub-pixels 14 of the same color, and ensure that the areas of all the notch areas 141 are equal. In this embodiment, the notch area 141 is disposed in the sub-pixel 14 of the same color, so that the uniformity of the light emitting luminance of the sub-pixels 14 of other colors in each display area of the touch display panel is also ensured. For example, as shown in fig. 4, if the pixel unit 16 includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, if the notch area 141 is provided only in the blue sub-pixel, the notch area 141 may be provided in all the blue sub-pixels on the touch display panel. Similarly, the notch area 141 may be disposed in a portion of the blue sub-pixel, as shown in fig. 5, fig. 5 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention, in fig. 5, the color of the sub-pixel in which the notch area 141 is disposed in each pixel unit 16 is the same, and exemplarily, the sub-pixel 142 in which the notch area 141 is disposed is a blue sub-pixel, but only a portion of the blue sub-pixel is disposed with the notch area 141. It should be noted that the arrangement order of the sub-pixels 14 in each row of the pixel units 16 may be different, for example, the arrangement order of the sub-pixels in the first row of the pixel units 16 is the red sub-pixel, the green sub-pixel, and the blue sub-pixel, and the arrangement order of the sub-pixels in the second row of the pixel units 16 is the blue sub-pixel, the green sub-pixel, and the red sub-pixel, and no matter how the arrangement order of the sub-pixels changes, it is enough in this embodiment to ensure that the sub-pixels 142 in the notch area 141 have the same color.
Optionally, fig. 6 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention, and referring to fig. 6, the sub-pixels 142 in each pixel unit 16, which are provided with the gap regions 141, may be located in the same row. The touch trace 13 extends along the column direction of the sub-pixels 14, i.e. the first direction X, and the notch area 141 is disposed along the extending direction of the touch trace 13, so that the extending sub-portions 131 of the touch trace 13 arranged in the extending direction extend to the notch area 141. The arrangement order of the sub-pixels of each row of the pixel units may be different, but in each column of the pixel units 16, the sub-pixels 142 of the same color, which are provided with the notch areas 141, are located in the same column, so that the notch areas 141 are arranged along the first direction X.
Optionally, fig. 7 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention, and referring to fig. 7, colors of sub-pixels 142 in each pixel unit 16, where the notched area 141 is disposed, are the same. In order to ensure that the same color sub-pixels 14 are provided with the notch regions 141 as much as possible, all the sub-pixels in the column of the sub-pixels 142 provided with the notch regions 141 may be provided with the same color, for example, if the pixel unit 16 includes a red sub-pixel, a blue sub-pixel and a green sub-pixel, the notch regions 141 are provided in the blue sub-pixel, the sub-pixels of the odd-numbered row pixel unit 16 may be arranged in the order of the red sub-pixel, the green sub-pixel and the blue sub-pixel, and the sub-pixels of the even-numbered row pixel unit 16 may be arranged in the order of the green sub-pixel, the red sub-pixel and the blue sub-pixel, all the blue sub-pixels of each column of the pixel unit 16 may be provided in the same column without mixing the red sub-pixel, the blue sub-pixel and the green sub-pixel in one column. Certainly, the arrangement sequence of the sub-pixels of each row of the pixel unit 16 is the red sub-pixel, the green sub-pixel and the blue sub-pixel, or the green sub-pixel, the red sub-pixel and the blue sub-pixel, and the blue sub-pixels can still be arranged in the same column, and the sub-pixels 142 provided with the notch areas 141 are located in the same column, so that the touch trace 13 can be conveniently arranged to extend the sub-portions 131.
Alternatively, there may be one sub-pixel 14 in each pixel unit 16 provided with the notched area 141, and the sub-pixels 142 provided with the notched areas 141 have the same color, so as to further increase the uniformity of the light emission luminance of each area of the display panel. For example, if each pixel unit 16 includes a red sub-pixel, a blue sub-pixel, and a green sub-pixel, the notch regions 141 are disposed in all the blue sub-pixels, and the brightness of the blue light emitted from each display region of the display panel is more uniform.
Optionally, a portion of the notched area 141 is disposed in the sub-pixel 14 adjacent to the touch trace 13, so that the touch trace 13 directly extends to the notched area 141 to form the extension sub-portion 131, and the extension sub-portion 131 does not need to extend to the sub-pixel 142 provided with the notched area 141 over other sub-pixels 14, which is beneficial to reducing the extension length of the extension sub-portion 131 and increasing the pixel aperture ratio of the display panel.
Fig. 8 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention, and referring to fig. 8, in order to clearly show the structure of the touch traces 13, the data lines 12 on the upper sides of the touch traces 13 are not shown in fig. 8. Fig. 7 shows that the notch area 141 is disposed in the sub-pixel 14 adjacent to one side of the touch trace 13, in this embodiment, the notch area 141 can be disposed in the sub-pixel 14 adjacent to two sides of the touch trace 13, as shown in fig. 8, each row of pixel units 16 is disposed in a staggered manner, so that the sub-pixels 142 that need to be disposed in the notch area 141 are distributed on two sides of the touch trace 13, and the touch trace 13 can be respectively disposed with the extension sub-portions 131 on two sides thereof, so as to increase the contact area between the extension sub-portions 131 of the touch trace 13 and the corresponding touch electrodes.
Optionally, the notch area 141 may be disposed at an edge of the sub-pixel 14 to further reduce an influence of the notch area 141 on the light-emitting luminance of the sub-pixel 14, for example, as shown in fig. 8, when the sub-pixel 14 is rectangular, the notch area 141 is disposed at a right angle of the sub-pixel 14, so as to effectively reduce an influence of the notch area 141 on the light-emitting luminance of the sub-pixel 14.
Referring to fig. 8, the extending direction of the extending portion 131 of the touch trace 13 may be perpendicular to the extending direction of the touch trace 13, optionally, an included angle between the extending direction of the extending portion 131 of the touch trace 13 and the extending direction of the touch trace 13 may also be an acute angle α, as shown in fig. 9, fig. 9 is a schematic structural diagram of another touch display panel provided in the embodiment of the present invention, the extending portion 131 is changed into a parallelogram, and in addition, the extending portion 131 may also be other regular or irregular shapes such as a circle, a pentagon, and the like besides a rectangle, a parallelogram.
Optionally, referring to fig. 10, fig. 10 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention, the touch trace 13 further includes a virtual extension portion 132, the virtual extension portion 132 and the extension portion 131 are disposed at the same layer, and the virtual extension portion 132 is electrically insulated from the touch electrode.
In order to ensure the uniformity of the luminance of the display panel, not only the sub-pixel 14 close to the touch trace 13 is provided with the notched area 141, but also the sub-pixel 14 far away from the touch trace 13 is provided with the notched area 141, the notched area 141 close to the touch trace 13 can be used for accommodating the extension sub-portion 131 directly extended from the touch trace 13, and the notched area 141 far away from the sub-pixel 14 of the touch trace 13 is also correspondingly provided with the virtual extension distribution 132, and the virtual extension sub-portion 132 is a sub-structure which is arranged on the same layer as the extension sub-portion 131 and is made of the same material. However, the virtual extension distribution 132 is not a partial structure directly extended from the touch trace 13, and is referred to as the virtual extension distribution 132. The purpose of the virtual extension portion 132 is to ensure the uniformity of the light emitting brightness of the touch display panel, which does not need to be electrically connected to the touch electrodes, and the insulating layer between the virtual extension portion 132 and the touch electrodes does not need to be provided with via holes, so that the virtual extension portion 132 is electrically insulated from the touch electrodes. Optionally, the touch trace 13, the extension portion 131 and the virtual extension portion 132 may be made of metal or indium tin oxide.
Optionally, each pixel unit may include a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel; the third color sub-pixel includes a notch area 141, and the light emitting area of the third color sub-pixel is smaller than that of the first color sub-pixel and the light emitting area of the third color sub-pixel is smaller than that of the second color sub-pixel; part of the third color sub-pixels are disposed adjacent to the touch trace 13, and the extension portion 131 of the touch trace 13 extends to the gap area 141 of the third color sub-pixels. For example, referring to fig. 10, the first color sub-pixel may be a red sub-pixel, the second color sub-pixel may be a green sub-pixel, the third color sub-pixel may be a blue sub-pixel, the blue sub-pixel includes a gap area 141, and a portion of the blue sub-pixel is disposed adjacent to the touch trace 13. The third color sub-pixel of each pixel unit includes a gap area 141, so that uniformity of light emitted by the third color sub-pixel in each display area of the touch display panel is realized.
Optionally, the wavelength of the light emitted by the third color sub-pixel is smaller than the wavelength of the light emitted by the first color sub-pixel, and smaller than the wavelength of the light emitted by the second color sub-pixel. Among the sub-pixels of the three colors, the wavelength of the light emitted by the sub-pixel of the third color is shortest, and under the same current driving, the luminance of the sub-pixel of the third color with the shortest wavelength of the light is lowest, so that the influence of the notch area 141 arranged in the sub-pixel of the third color on the luminance of the entire touch display panel is smallest. Illustratively, if the pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, the third color sub-pixel is a blue sub-pixel.
Optionally, with continued reference to fig. 3, the touch display panel further includes a plurality of gate lines 11; the gate line 11 is disposed between the touch trace 13 and the data line 12; a first insulating layer is disposed between the touch trace 13 and the gate line 11, and a second insulating layer is disposed between the gate line 11 and the data line 12.
In a direction perpendicular to the substrate 1, the touch traces 13 and the data lines 12 are disposed with the gate lines 11 therebetween, and in contrast to a structure in which only one insulating layer is disposed between the touch traces 13 and the data lines 12, in this embodiment, a first insulating layer, a gate line 11, and a second insulating layer are disposed between the touch traces 13 and the data lines 12. According to the capacitance formula, C is ═ S/4 pi kd, in the embodiment, epsilon is a constant, k is an electrostatic force constant, S is a facing area of the touch trace 13 and the data line 12, and d is a distance between the touch trace 13 and the data line 12.
Optionally, with continued reference to fig. 3, the touch display panel includes a pixel electrode 19 and a common electrode, and the common electrode multiplexes the touch electrode 15. The sub-pixels 14 of the touch display panel are provided with pixel electrodes 19 corresponding to each other, and the touch display panel provided In this embodiment integrates a touch function and a display function In an "In-cell" manner, and the common electrode multiplexes the touch electrode 15, so that the touch display panel is more light and thin.
Optionally, fig. 11 is a top view of a display panel according to an embodiment of the present invention, and referring to fig. 11, the pixel electrode 19 is located between the common electrode (the touch electrode 15) and the substrate 1, a portion of the pixel electrode 19 includes the gap area 141, the common electrode includes a slit 151, and the slit 151 of the common electrode is located in a vertical projection of the pixel electrode 19 on the substrate 1.
When the pixel electrode 19 is positioned between the common electrode and the substrate 1, the common electrode is closer to the liquid crystal layer, and the slits 151 are provided on the common electrode. The slits 151 are provided to facilitate the electric field between the pixel electrode 19 and the common electrode to control the liquid crystal layer through the common electrode, and if the common electrode is not provided with the slits 151, the block-shaped common electrode is easy to shield the electric field, which is not beneficial to the control of the liquid crystal layer and affects the display effect of the touch display panel.
Specifically, in the direction perpendicular to the substrate base plate 1, a portion of the projection of the common electrode located within the projection of the pixel electrode 19 may include a plurality of slits 151 arranged in parallel. The slits 151 may extend in any direction as long as it is ensured that the electric field between the pixel electrode 19 and the common electrode can be transmitted, alternatively, as shown in fig. 11, the slits 151 may extend in a direction parallel to the touch trace, that is, in the first direction X, because the long side of the pixel electrode 19 is parallel to the first direction X, the slits 151 are arranged in the first direction X, the number of the slits 151 is small, and the manufacturing process is simple. Some sub-pixels of the touch display panel are provided with a notch area, the pixel electrodes corresponding to the sub-pixels one by one are also provided with a notch area 141, and the slits 151 on the common electrode are arranged to avoid the notch area 141 in a direction perpendicular to the substrate base plate 1.
Fig. 12 is a cross-sectional view of the touch display panel of fig. 3 along line a-a ', and fig. 13 is a cross-sectional view of the touch display panel of fig. 3 along line b-b', and referring to fig. 12 and 13, when the pixel electrode 19 is located between the common electrode and the substrate 1, it is assumed that the gate line 11 of the touch display panel is disposed between the touch trace 13 and the data line 12; a first insulating layer 171 is disposed between the touch trace 13 and the gate line 11, a second insulating layer 172 is disposed between the gate line 11 and the data line 12, and referring to fig. 12, a third insulating layer 173 and a fourth insulating layer 174 may be further disposed between the data line 12 and the touch electrode 15 to electrically insulate the data line 12 from the touch electrode 15.
Referring to fig. 12 and 13, the pixel electrode 19 may be positioned between the common electrode (touch electrode 15) and the base substrate 1. In this embodiment, the source and drain electrodes 18 of the sub-pixels may be disposed on the same layer as the data lines 12, a third insulating layer 173 is disposed between the data lines 12 and the pixel electrodes 19, a fourth insulating layer 174 is disposed between the pixel electrodes 19 and the touch electrodes 15, the pixel electrodes 19 are electrically connected to the drain electrodes 18 of the corresponding sub-pixels through via holes on the third insulating layer 173, and the via holes disposed in the gap regions 141 of the pixel electrodes pass through the first insulating layer 171, the second insulating layer 172, the third insulating layer 173 and the fourth insulating layer 174, so as to electrically connect the extension portions 131 to the corresponding touch electrodes 15.
Optionally, fig. 14 is a top view of a display panel according to an embodiment of the present invention, referring to fig. 14, a common electrode (touch electrode 15) is located between a pixel electrode 19 and a substrate 1, the pixel electrode 19 includes a slit 191, and a portion of the pixel electrode 19 includes a notch area 141.
When the common electrode is positioned between the pixel electrode 19 and the substrate 1, the pixel electrode 19 is closer to the liquid crystal layer, and the slit 191 is provided on the pixel electrode 19. Similarly, the slits 191 are provided to control the electric field between the pixel electrode 19 and the common electrode through the pixel electrode 19, thereby preventing the block-shaped pixel electrode 19 from shielding the electric field.
The pixel electrode 19 may include a plurality of slits 191 arranged in parallel in a direction perpendicular to the substrate base plate 1. The slits 191 may be extended in any direction. Optionally, as shown in fig. 14, the slits 191 may extend in a direction parallel to the touch traces, that is, in the first direction X, so that the number of the slits 191 is small, and the manufacturing process is simple. The partial pixel electrodes are provided with the notch regions 141, corresponding to the sub-pixels provided with the notch regions one to one.
Fig. 15 is a cross-sectional view of the other touch display panel shown in fig. 3 along a line a-a ', fig. 16 is a cross-sectional view of the other touch display panel shown in fig. 3 along a line b-b', referring to fig. 15 and fig. 16, on the basis that the gate line 11 is disposed between the touch trace 13 and the data line 12, a third insulating layer 173 is disposed between the data line 12 and the touch electrode 15, a fifth insulating layer 175 is disposed on a side of the touch electrode 15 away from the substrate 1, and the fifth insulating layer 175 is used for electrically insulating the touch electrode 15 from the pixel electrode disposed on the side of the touch electrode 15 away from the substrate 1.
As shown in fig. 15 and 16, the common electrode is located between the pixel electrode 19 and the substrate 1, a fifth insulating layer 175 is disposed between the pixel electrode 19 and the touch electrode 15, the pixel electrode 19 is electrically connected to the drain electrode 18 of the corresponding sub-pixel through a via hole passing through the third insulating layer 173, the touch electrode 15 and the fifth insulating layer 175, and a via hole disposed in the gap region 141 of the pixel electrode passes through the first insulating layer 171, the second insulating layer 172 and the third insulating layer 173 for electrically connecting the extension subsection 131 with the corresponding touch electrode 15.
The embodiment of the invention also provides a touch display device. Fig. 17 is a schematic structural diagram of a touch display device according to an embodiment of the present invention, and as shown in fig. 17, the touch display device according to the embodiment of the present invention includes a touch display panel 200 according to any embodiment of the present invention. The touch display device may be a mobile phone as shown in fig. 17, or may be a computer, a television, an intelligent wearable device, and the like, which is not particularly limited in this embodiment.
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 (9)
1. A touch display panel, comprising:
a substrate base plate;
the touch control device comprises a substrate base plate, a plurality of touch control wires and a plurality of data wires, wherein the substrate base plate is provided with a plurality of touch control wires and a plurality of data wires, the touch control wires and the data wires extend along a first direction, the data wires and the touch control wires are arranged in different layers, the data wires are positioned on one side, away from the substrate base plate, of the touch control wires, and at least one data wire is overlapped with the touch control wires;
a plurality of pixel units arranged in an array;
the touch control device comprises a plurality of touch control electrodes, a plurality of touch control electrode groups and a plurality of pixel units, wherein each touch control electrode covers the plurality of pixel units, each pixel unit comprises a plurality of sub-pixels, and at least one sub-pixel in at least one pixel unit is provided with a notch area;
each touch routing line comprises a plurality of extension subsections, the extension directions of the extension subsections are different from the first direction, and the extension subsections extend to the notch area; at least one extending part in each touch wire is electrically connected with the corresponding touch electrode through a through hole arranged in the notch area, and the through hole penetrates through the insulating layer between the touch wire and the touch electrode;
the sub-pixels in each pixel unit provided with the notch area have the same color, and the areas of the notch areas are consistent;
part of the gap area is arranged in the sub-pixels adjacent to the touch routing;
the touch routing further comprises a virtual extension subsection, the virtual extension subsection and the extension subsection are arranged on the same layer, and the virtual extension subsection is electrically insulated from the touch electrode.
2. The touch display panel of claim 1,
the sub-pixels provided with the gap areas in each pixel unit are positioned in the same column.
3. The touch display panel of claim 2,
the color of each sub-pixel in the row of the sub-pixel provided with the notch area in each pixel unit is the same.
4. The touch display panel of claim 1,
each pixel unit comprises a first color sub-pixel, a second color sub-pixel and a third color sub-pixel; the third color sub-pixel comprises a notch area, the light emitting area of the third color sub-pixel is lower than that of the first color sub-pixel, and the light emitting area of the third color sub-pixel is lower than that of the second color sub-pixel;
and part of the third color sub-pixels are arranged close to the touch-control routing, and the extension parts of the touch-control routing extend to the gap areas of the third color sub-pixels.
5. The touch display panel of claim 1,
the touch display panel further comprises a plurality of gate lines, the gate lines are arranged between the touch wires and the data lines, a first insulating layer is arranged between the touch wires and the gate lines, and a second insulating layer is arranged between the gate lines and the data lines.
6. The touch display panel of claim 1,
the touch display panel comprises a pixel electrode and a common electrode, and the common electrode is multiplexed with the touch electrode.
7. The touch display panel of claim 6,
the pixel electrode is located between the common electrode and the substrate base plate, part of the pixel electrode comprises a gap area, the common electrode comprises a slit, and the slit of the common electrode is located in the vertical projection of the pixel electrode on the substrate base plate.
8. The touch display panel according to claim 6,
the common electrode is located between the pixel electrode and the substrate, the pixel electrode includes a slit, and a portion of the pixel electrode includes a notch region.
9. A touch display device comprising the touch display panel according to any one of claims 1 to 8.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111158526B (en) * | 2019-12-30 | 2024-04-16 | 武汉天马微电子有限公司 | Touch display substrate, organic electroluminescent display panel and display device |
| CN111653197B (en) * | 2020-06-16 | 2022-05-17 | 厦门天马微电子有限公司 | Display panel and display device |
| CN111755489B (en) * | 2020-06-22 | 2022-10-04 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN111965878B (en) * | 2020-08-31 | 2023-06-13 | 上海天马微电子有限公司 | Dimming panel, manufacturing method thereof and intelligent window glass |
| 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 |
| CN115917482A (en) * | 2021-06-04 | 2023-04-04 | 京东方科技集团股份有限公司 | Touch layer group and touch display device |
| CN113552970B (en) * | 2021-08-03 | 2024-03-15 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN114489379B (en) * | 2022-01-17 | 2024-02-09 | Tcl华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
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