CN106775153B - Self-capacitance touch display device and display equipment - Google Patents
Self-capacitance touch display device and display equipment Download PDFInfo
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- CN106775153B CN106775153B CN201611156272.6A CN201611156272A CN106775153B CN 106775153 B CN106775153 B CN 106775153B CN 201611156272 A CN201611156272 A CN 201611156272A CN 106775153 B CN106775153 B CN 106775153B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- 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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Abstract
The invention provides a self-capacitance touch display device, and belongs to the technical field of display. The self-capacitance touch display device comprises: the touch screen comprises a first substrate, a second substrate and a third substrate, wherein the first substrate comprises a first touch electrode layer, a first conductive layer and a substrate; the first touch electrode layer is arranged on one side of the substrate base plate; the first conducting layer is arranged between the substrate and the first touch electrode layer, and the first conducting layer is insulated from the first touch electrode layer; the first conducting layer is a transparent metal oxide film layer or a latticed metal film layer; in a first time interval, the self-capacitance touch control display device carries out touch control, and the first conductive layer is connected with a fixed potential. According to the invention, the projected self-capacitance type first touch electrode layer and the first conductive layer connected with the fixed potential in the touch time period are sequentially stacked on the substrate from top to bottom, so that a fixed capacitance is formed between the projected self-capacitance type first touch electrode layer and the first conductive layer, and the phenomenon of IC random reporting points under the condition of heavy touch is avoided.
Description
Technical Field
The invention relates to the technical field of display, in particular to a self-capacitance type touch display device and display equipment.
Background
Since the advent of computers, people have been thinking about how to implement human-computer conversations, so-called human-computer interactions, in a more efficient manner. The touch technology, especially the projected capacitive touch technology, has the characteristics of direct, efficient and smooth performance, and greatly improves the efficiency and convenience of conversation between people and computers. Projected capacitive touch technologies are classified into self-capacitance and mutual capacitance, wherein the principle of projected capacitive touch technology is to determine the position of a finger touch by detecting the variation of the parasitic capacitance of a self-capacitance channel when the finger touches, and for a specific installation manner, there are two types, namely an embedded type and an external type. The In-cell technology is one of embedded projected capacitive touch technologies, and is to embed a touch panel function into a pixel structure, that is, a touch sensor function is embedded inside a display screen, and a driving unit of a display device is matched with a touch unit to complete touch control and display control.
As for a self-capacitance type touch display device, such as a self-capacitance In-cell touch liquid crystal display device, as shown In fig. 1B, the display device sequentially includes, from top to bottom, a CF (Color Filter) substrate 1, a liquid crystal layer 2, a liquid crystal encapsulation layer 201, and a TFT (Thin Film Transistor) array substrate 3, which are stacked, wherein a self-capacitance type touch electrode layer 4 is disposed on the TFT array substrate 3. As shown in fig. 1A, the self-capacitance touch electrode layer 4 includes a plurality of touch electrode blocks 401 arranged in an array, wherein each touch electrode block 401 respectively realizes output of a touch detection signal and input of a touch driving signal through a signal line 402 electrically connected thereto. In the design of the whole device, the middle frame 5 of the display device (e.g. a mobile phone) is grounded through metal, wherein each touch electrode block 401 is a self-capacitance channel, and a self-capacitance C is formed between the touch electrode block and a Ground (GND) plane 501 of the middle frame 5. In the case of the In-cell touch lcd device with embedded self-capacitance, when a finger touches the liquid crystal display device, the distance between the self-capacitance channel at the corresponding physical location and the middle frame ground plane 501 becomes smaller, and the self-capacitance C becomes larger, so that the touch location data detected by the touch IC (Integrated Circuit) 6, i.e., the value of the self-capacitance C of the self-capacitance channel at the corresponding physical location, is increased. Under the condition that the finger touch pressure is large, namely, heavy pressure is applied, the grounding middle frame 5 of the display device is used as a zero potential energy surface, except for the self-capacitance channel corresponding to the actual physical position of the touch point, other self-capacitance channels may also be misjudged by the touch IC as the self-capacitance change caused by the non-uniform change of the distance between the self-capacitance channel and the middle frame grounding plane 501 due to the non-uniform deformation of the TFT substrate 3 under the heavy pressure, and the misreport points or the misreport points of the touch IC can occur for the self-capacitance type touch display device under the heavy pressure touch condition.
Disclosure of Invention
In view of the above, the present invention provides a self-capacitance touch display device, which has the following technical scheme:
a self-capacitance touch display device, comprising: the touch screen comprises a first substrate, a second substrate and a third substrate, wherein the first substrate comprises a first touch electrode layer, a first conductive layer and a substrate;
the first touch electrode layer is arranged on one side of the substrate base plate;
the first conducting layer is arranged between the substrate and the first touch electrode layer, and the first conducting layer is insulated from the first touch electrode layer;
the first conducting layer is a transparent metal oxide film layer or a latticed metal film layer;
in a first time interval, the self-capacitance touch control display device carries out touch control, and the first conductive layer is connected with a fixed potential.
Optionally, the first substrate further includes an active layer, the active layer including a channel region;
the active layer is arranged on one side, away from the substrate base plate, of the first conducting layer and is insulated from the first conducting layer;
the first conducting layer is a latticed metal film layer;
the orthographic projection of the first conducting layer on the plane of the substrate base plate at least covers the orthographic projection of the channel region on the plane of the substrate base plate.
Optionally, the latticed metal film layer comprises a plurality of channel region covering portions and connecting portions;
the orthographic projection of the channel region covering part on the plane of the substrate base plate at least covers the orthographic projection of the channel region on the plane of the substrate base plate;
the connection portion connects the channel region covering portions.
The first substrate further comprises a plurality of data lines arranged along a first direction and extending along a second direction, and a plurality of gate lines arranged along the second direction and extending along the first direction, wherein the first direction is crossed with the second direction;
the data line is used for transmitting display signals;
the gate lines are used for transmitting scanning signals;
the data line is insulated from the gate line;
the area defined between two adjacent data lines and two adjacent gate lines forms a pixel area;
the orthographic projection of the part of the connecting part surrounded in the first conducting layer on the plane of the substrate at least covers the orthographic projection of the pixel area on the plane of the substrate.
Optionally, the transparent metal oxide film layer includes an ITO film layer, an ATO film layer, or an AZO film layer.
Optionally, the self-capacitance touch display device further includes a second substrate disposed opposite to the first substrate;
the first touch electrode layer is arranged on one side, opposite to the second substrate, of the substrate;
a black matrix is arranged on one side, facing the first substrate, of the second substrate;
the orthographic projection of the first conducting layer on the plane of the substrate base plate is located in the area of the orthographic projection of the black matrix on the plane of the substrate base plate.
Optionally, wherein the latticed metal film layer comprises Mo.
Optionally, the thickness of the latticed metal film layer is 35nm to 50 nm.
Optionally, in a second time period, the self-capacitance touch display device displays, and the first conductive layer is suspended.
Optionally, the first touch electrode layer includes a plurality of touch electrode blocks arranged in an array.
Optionally, the self-capacitance touch display device is a self-capacitance touch liquid crystal display device, and the first touch electrode layer is reused as a common electrode layer.
The invention also provides a display device which comprises the self-capacitance touch display device.
Compared with the prior art, the self-capacitance touch display device and the display equipment provided by the invention at least have the following outstanding advantages:
according to the technical scheme, the projected self-capacitance type first touch electrode layer and the first conductive layer connected with the fixed potential in the touch time period are fixedly arranged on the substrate in a laminating mode, under the condition of heavy pressure touch, the substrate can be bent and deformed, and the positions of the first touch electrode layer and the first conductive layer can move along with the substrate at the same time, so that the space physical positions of the first touch electrode layer and the first conductive layer are relatively unchanged, the same fixed capacitance is always kept between the first touch electrode layer and the first conductive layer under the condition that the fixed potential is not changed, the parasitic capacitance of a self-capacitance channel in the first touch electrode layer is not influenced by the deformation of the substrate, the touch function of the display device can be normally realized, and the phenomenon that the touch IC wrongly judges an actual touch point, namely the phenomenon of point report is avoided under the condition of heavy pressure.
Drawings
Fig. 1A is a schematic top view of a touch electrode layer of a self-capacitance touch display device in the prior art;
FIG. 1B is a cross-sectional view taken along A-A' of FIG. 1A;
fig. 2A is a schematic diagram of a pixel structure in a self-capacitance touch display device according to an embodiment of the invention;
FIG. 2B is a cross-sectional view taken along B-B' of FIG. 2A;
fig. 2C is a schematic top view of a first substrate of a self-capacitance touch display device according to an embodiment of the invention;
fig. 3 is a schematic diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples.
It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
An embodiment of the invention provides a self-capacitance touch display device, fig. 2A is a schematic diagram of a pixel structure in the self-capacitance touch display device provided by the embodiment of the invention, fig. 2B is a cross-sectional view taken along B-B' of fig. 2A, as shown in fig. 2B, the self-capacitance touch display device 100 includes a first substrate 11, wherein the first substrate 11 includes a first touch electrode layer 111, a first conductive layer 112 and a substrate 113. The first touch electrode layer 111 is disposed on one side of the substrate base plate 113. The first conductive layer 112 is disposed between the substrate 113 and the first touch electrode layer 111, and the first conductive layer 112 is insulated from the first touch electrode layer 111. The first conductive layer 112 is a transparent metal oxide film or a grid-shaped metal film. In the first time period, the self-capacitance touch display device 100 performs touch control, and the first conductive layer 112 is connected to a fixed potential.
Specifically, as shown In fig. 2B, the self-capacitance type touch display device 100 includes a first substrate 11, wherein the self-capacitance type touch display device 100 may be an In-cell type, i.e., a self-capacitance embedded In-cell touch display device, and the first substrate 11 may be, for example, a TFT array substrate In a liquid crystal display device or an organic light emitting diode display device. A first touch electrode layer 111, a first conductive layer 112 and an underlying substrate 113 are sequentially stacked from top to bottom on a side of the first substrate 11 facing the display surface 130, wherein the touch type of the first touch electrode layer 111 is a projected self-capacitance type, and the first conductive layer 112 is insulated from the first touch electrode layer 111 by an insulating layer. In the first time period of the touch control of the self-capacitance touch display device 100, the first conductive layer 112 is connected to a fixed potential, that is, the potential difference with respect to the ground remains unchanged, and the fixed potential may be the ground of the first conductive layer. As shown in fig. 2B, the first touch electrode layer 111 and the first conductive layer 112 are laminated and fixed on the same substrate, i.e. the substrate 113, under the condition of heavy touch, the substrate 113 will bend and deform, the positions of the first touch electrode layer 111 and the first conductive layer 112 will move simultaneously with the substrate 113, and the physical positions of the first touch electrode layer 111 and the first conductive layer 112 will remain relatively unchanged in space, so when the first conductive layer 112 is connected to a fixed potential (i.e. in a first period), a fixed capacitor is formed between the first conductive layer 112 and the first touch electrode layer 111, the parasitic capacitance of the self-capacitance channel in the first touch electrode layer 111 is not affected by the deformation of the substrate 113, the self-capacitance touch display device 100 can normally realize the touch function under the condition of heavy touch, and the phenomenon that the touch IC falsely determines the actual touch point, i.e., the touch point is confused is avoided. The first conductive layer 112 is a transparent metal oxide film or a grid-shaped metal film.
Optionally, the first conductive layer is a transparent metal Oxide film layer, and the transparent metal Oxide film layer includes an ITO (Indium Tin Oxide), an ATO (Antimony Tin Oxide), or an AZO (Al-Doped ZnO) film layer. The transparent metal oxide film layer has good conductivity and high transmittance to visible light, wherein the transparent metal oxide film layer is an ITO film layer, an ATO film layer and an AZO film layer, and the transparent metal oxide film layer is selected as the first conductive layer, so that the required functions of the display device can be realized, and the aperture ratio and the transmittance of the display device can be ensured. Alternatively, the transparent metal oxide film layer may be disposed entirely on the substrate base plate.
Optionally, the first conductive layer is a grid-shaped metal film layer. As shown in fig. 2B, the first substrate 11 further includes an active layer 14, and the active layer 14 includes a channel region 141. The active layer 14 is disposed on a side of the first conductive layer 112 away from the substrate 113, and the active layer 14 is insulated from the first conductive layer 112. The orthographic projection of the first conductive layer 112 on the plane of the substrate base 113 at least covers the orthographic projection of the channel region 141 on the plane of the substrate base 113.
Specifically, as shown in fig. 2B, the active layer 14 includes a channel region 141 and a lightly doped region 142, and the tft switch 114 of the top-gate structure includes the active layer 14, the gate line 115, the source electrode 1141 and the drain electrode 1142, wherein the channel region 141 is configured to provide a channel for the transmission of free electrons between the source electrode 1141 and the drain electrode 1142 when the tft switch 114 is turned on. The first touch electrode layer 111, the active layer 14, and the first conductive layer 112 are sequentially stacked on the substrate base plate 113 from top to bottom, and are insulated from each other by an insulating layer. The first conductive layer 112 is a grid-shaped metal film layer, and an orthogonal projection of the first conductive layer on the plane of the substrate 113 at least can cover an orthogonal projection of the channel region 141 on the plane of the substrate 113. For the first conductive layer 112 connected with a fixed potential, when the substrate 113 is bent and deformed, the physical space position between the first conductive layer and the first touch electrode layer 111 is relatively unchanged, so that a fixed capacitance is formed between the first conductive layer and the first touch electrode layer, under the heavy-pressure touch, the parasitic capacitance of the self-capacitance channel in the first touch electrode layer 111 is no longer influenced by the deformation of the substrate 113, so that the occurrence of a touch IC random reporting point phenomenon can be avoided, and meanwhile, due to the shielding of the metal latticed first conductive layer 112 on the channel region 141 in the active layer 14, the generation of photogenerated carriers in the channel region 141 can be prevented under the irradiation of backlight (not shown), and the generation of photogenerated carriers can influence the electrical characteristics of a thin film transistor switch (TFT), such as leakage current and the like in the off state of the thin film transistor switch.
Alternatively, as shown in fig. 2A, the latticed metal film layer 112 includes a plurality of channel region covering portions 1121 and connecting portions 1122. The orthographic projection of the channel region covering portion 1121 on the plane of the substrate base 113 at least covers the orthographic projection of the channel region 141 on the plane of the substrate base 113. The connection portion 1122 connects the channel region covering portions 1121. The first substrate 11 further includes a plurality of data lines 17 arranged in the first direction X and extending in the second direction Y, and a plurality of gate lines 115 arranged in the second direction Y and extending in the first direction X, the first direction X crossing the second direction Y. The data lines 17 are used for transmitting display signals, the gate lines 115 are used for transmitting scanning signals, the data lines 17 are insulated from the gate lines 115 in a crossing manner, and the regions defined between two adjacent data lines 17 and two adjacent gate lines 115 constitute pixel regions 160. An orthogonal projection of a portion of the connection portion 1122 surrounded by the first conductive layer 112 on the plane of the substrate 113 at least covers an orthogonal projection of the pixel region 160 on the plane of the substrate 113, that is, the connection portion 1122 surrounds the pixel region 160.
Specifically, the self-capacitance touch display device 100 may be a self-capacitance touch liquid crystal display device, and the transparent pixel electrode 16 and the common electrode are correspondingly disposed in the pixel region 160. After the tft switch 114 is turned on via the gate line 115, the data line 17 charges the pixel electrode 16 to have a certain potential via the source electrode 1141 and the drain electrode 1142 of the tft switch 114. The deflection of the liquid crystal molecules in the liquid crystal molecule layer 15 can be controlled by adjusting the potential difference between the pixel electrode 16 and the common electrode, so as to realize the display function of the display device. The first conductive layer 112 includes a plurality of channel region covering portions 1121 and connection portions 1122, wherein the connection portions 1122 surround the pixel region 160, the distribution of the regions corresponds to the distribution of the data lines 17 and the gate lines 115, and the distribution of the channel region covering portions 1121 corresponds to the distribution of the channel regions 141 in the active layer 14. Under heavy touch, the channel region covering portion 1121 and the connecting portion 1122 jointly provide a fixed capacitance for the first touch electrode layer 111 by connecting a fixed potential, so as to eliminate the influence of the deformation of the substrate 113 on the parasitic capacitance of the self-capacitance channel.
Optionally, the latticed metal film layer comprises Mo. The metal Mo has the physical characteristics of small expansion coefficient, large electric conductivity, good heat-conducting property and the like, and the Mo and the alloy thereof are widely applied to electronic devices such as electron tubes, transistors, rectifiers and the like.
Optionally, the thickness of the latticed metal film layer is 35nm to 50 nm.
Optionally, as shown in fig. 2A and 2B, the self-capacitance touch display device 100 further includes a second substrate 13 disposed opposite to the first substrate 11. The first touch electrode layer 111 is disposed on a side of the substrate base 113 opposite to the second base 13. A black matrix 131 is disposed on a side of the second substrate 13 facing the first substrate 11. The orthographic projection of the first conductive layer 112 on the plane of the substrate base 113 is located in the area of the orthographic projection of the black matrix 131 on the plane of the substrate base 113.
Specifically, the self-capacitance touch display device 100 includes a second substrate 13, a black matrix 131, a liquid crystal molecular layer 15, a pixel electrode 16, a common electrode, a first touch electrode layer 111, an active layer 14, a first conductive layer 112, and a substrate 113, which are sequentially stacked from top to bottom, wherein liquid crystal molecules in the liquid crystal molecular layer 15 between the first substrate 11 and the second substrate 13 are deflected under the effect of a voltage difference between the pixel electrode 16 and the common electrode, so that a display function of the display device can be realized, and the black matrix 131 is used for shielding a portion of the liquid crystal molecular layer 15 that cannot be used for displaying. The orthographic projection of the first conductive layer 112 on the plane of the substrate base plate 113 is located in the orthographic projection area of the black matrix 131 on the plane of the substrate base plate 113, namely, the first conductive layer 112 in the metal grid shape is arranged in the orthographic projection of the black matrix 131, so that the arrangement of the first conductive layer 112 in the metal grid shape does not affect the aperture ratio and the transmittance of the display device.
Optionally, the self-capacitance touch display device further includes a second time period in addition to the first time period for touch control. In the second time period, the self-capacitance touch display device 100 displays, and the first conductive layer 112 is suspended.
Specifically, the working period of the self-capacitance touch display device 100 can be divided into a first period and a second period, where in the first period, the self-capacitance touch display device 100 performs touch control, and in the second period, the self-capacitance touch display device 100 performs display control, and the first conductive layer 112 is suspended, that is, the first conductive layer 112 is not connected with any potential. In the second time period, the self-capacitance touch display device 100 does not perform touch control. The first and second periods may alternate. Thus, in the second period, i.e., the display period, the load (loading) of the display device is not increased due to the first conductive layer 112 being connected to a fixed potential (including ground).
Fig. 2C is a schematic top view of a first substrate of a self-capacitance touch display device according to an embodiment of the invention. Fig. 2C shows a specific structure diagram of the touch electrode layer 111 of the self-capacitance touch display device shown in fig. 2B.
Optionally, the first touch electrode layer includes a plurality of touch electrode blocks arranged in an array. Each touch electrode block can receive a touch driving signal and generate a touch detection signal.
Optionally, the self-capacitance touch display device 100 is a self-capacitance touch liquid crystal display device, and the first touch electrode layer 112 is reused as a common electrode layer.
Specifically, as shown in fig. 2A, 2B, and 2C, the self-capacitance touch display device 100 is a self-capacitance touch liquid crystal display device, and may include a second substrate 13, a liquid crystal molecule layer 15, a pixel electrode 16, a first touch electrode layer 111, an active layer 14, a first conductive layer 112, and a substrate 113, which are sequentially stacked from top to bottom, where as shown in fig. 2C, the first touch electrode layer 111 is a projected self-capacitance touch electrode layer, and includes a plurality of touch electrode blocks 1111 arranged in an array, and each of the touch electrode blocks 1111 forms a self-capacitance channel. As shown in fig. 2B, the first touch electrode layer 111 can be multiplexed as a common electrode layer, wherein each touch electrode block 1111 is respectively used for inputting a touch driving signal and outputting a touch detection signal via a signal line 1112 electrically connected thereto.
It should be noted that, as shown in fig. 2B, in the embodiment provided by the present invention, the first substrate 14 may further include a buffer layer 116 disposed on the substrate 113, an interlayer insulating layer 117, and respective insulating layers 110, 118, and 119 between the conductor layer structures, wherein the pixel electrode 16 is electrically connected to the drain electrode 1142 of the thin film transistor switch 114 through a via hole.
The embodiment of the invention also provides a display device which comprises the self-capacitance touch display device. Fig. 3 is a schematic diagram of a display device according to an embodiment of the present invention. As shown in fig. 3, the display device 18 is a mobile phone and includes a self-capacitance touch display device 181, and the self-capacitance touch display device 181 is the self-capacitance touch display device described in any of the above embodiments. In addition, in this embodiment, the display device may also be a display device such as a watch, a computer, a television, and the like, which is not particularly limited in this embodiment. Since the display device provided by this embodiment includes the self-capacitance touch display device described in the above embodiments, the advantages associated with the self-capacitance touch display device are also correspondingly provided.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (11)
1. A self-capacitance touch display device, comprising: the touch screen comprises a first substrate, a second substrate and a third substrate, wherein the first substrate comprises a first touch electrode layer, a first conductive layer and a substrate;
the first touch electrode layer is arranged on one side of the substrate base plate;
the first conducting layer is arranged between the substrate and the first touch electrode layer, and the first conducting layer is insulated from the first touch electrode layer;
the first conducting layer is a transparent metal oxide film layer or a latticed metal film layer;
in a first time interval, the self-capacitance touch control display device carries out touch control, and the first conductive layer is connected with a fixed potential;
the first substrate is a TFT array substrate in a liquid crystal display device; or, the first substrate is a TFT array substrate in an organic light emitting diode display device.
2. The self-capacitance touch display device of claim 1, wherein the first substrate further comprises an active layer comprising a channel region;
the active layer is arranged on one side, away from the substrate base plate, of the first conducting layer and is insulated from the first conducting layer;
the first conducting layer is a latticed metal film layer;
the orthographic projection of the first conducting layer on the plane of the substrate base plate at least covers the orthographic projection of the channel region on the plane of the substrate base plate.
3. The self-capacitive touch display device of claim 2, wherein the latticed metal film layer comprises a plurality of channel region covering portions and connecting portions;
the orthographic projection of the channel region covering part on the plane of the substrate base plate at least covers the orthographic projection of the channel region on the plane of the substrate base plate;
the connecting portion connects the channel region covering portions;
the first substrate further comprises a plurality of data lines arranged along a first direction and extending along a second direction, and a plurality of gate lines arranged along the second direction and extending along the first direction, wherein the first direction is crossed with the second direction;
the data line is used for transmitting display signals;
the gate lines are used for transmitting scanning signals;
the data line is insulated from the gate line;
the area defined between two adjacent data lines and two adjacent gate lines forms a pixel area;
the orthographic projection of the part of the connecting part surrounded in the first conducting layer on the plane of the substrate at least covers the orthographic projection of the pixel area on the plane of the substrate.
4. The self-capacitance touch display device according to claim 1, wherein the transparent metal oxide film layer comprises an ITO film layer, an ATO film layer, or an AZO film layer.
5. The self-capacitive touch display device according to claim 2 or 3, further comprising a second substrate disposed opposite to the first substrate;
the first touch electrode layer is arranged on one side, opposite to the second substrate, of the substrate;
a black matrix is arranged on one side, facing the first substrate, of the second substrate;
the orthographic projection of the first conducting layer on the plane of the substrate base plate is located in the area of the orthographic projection of the black matrix on the plane of the substrate base plate.
6. The self-capacitive touch display device according to any one of claims 1-3, wherein the latticed metal film layer comprises Mo.
7. The self-capacitance touch display device according to any one of claims 1-3, wherein the thickness of the latticed metal film layer is 35nm to 50 nm.
8. The self-capacitive touch display device according to any one of claims 1 to 3, wherein the first conductive layer floats when the self-capacitive touch display device displays.
9. The self-capacitance touch display device according to any one of claims 1-3, wherein the first touch electrode layer comprises a plurality of touch electrode blocks arranged in an array.
10. The self-capacitive touch display device according to claim 9, wherein the self-capacitive touch display device is a self-capacitive touch liquid crystal display device, and the first touch electrode layer is multiplexed as a common electrode layer.
11. A display device, characterized in that the display device comprises a self-capacitive touch display device according to any one of claims 1-10.
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| TWI643114B (en) * | 2018-01-08 | 2018-12-01 | 友達光電股份有限公司 | A touch display panel and a method of mending thereof |
| CN109656073A (en) * | 2019-01-03 | 2019-04-19 | 昆山龙腾光电有限公司 | Array substrate and its manufacturing method and display device |
| CN110928010B (en) * | 2019-11-29 | 2022-10-11 | 厦门天马微电子有限公司 | Display module and display device |
| CN111443511A (en) * | 2020-04-16 | 2020-07-24 | 深圳市华星光电半导体显示技术有限公司 | Self-capacitance touch display panel and driving method thereof |
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| CN104699311B (en) * | 2015-04-01 | 2017-12-26 | 上海天马微电子有限公司 | Display panel and display device |
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