CN109871157B - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN109871157B CN109871157B CN201910102781.8A CN201910102781A CN109871157B CN 109871157 B CN109871157 B CN 109871157B CN 201910102781 A CN201910102781 A CN 201910102781A CN 109871157 B CN109871157 B CN 109871157B
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Abstract
The invention relates to a touch display panel and a touch display device. Touch-control display panel includes the display area and surrounds the non-display area of display area, and the non-display area is including setting up at least one fluting district on the display area optional position all around, and the display area includes first display area and second display area, and the second display area is located between first display area and the fluting district, and first display area and second display area include: the device comprises a plurality of induction electrodes arranged along a first direction and a plurality of driving electrodes arranged along a second direction, wherein the induction electrodes and the driving electrodes are arranged in a cross insulation mode; the sensing electrode and/or the driving electrode comprise a plurality of electrode units, and each electrode unit comprises an electrode pattern and at least one dummy pattern; the dummy patterns of the electrode units in the second display region are electrically connected with the electrode patterns. According to the touch display panel, the area of the electrode pattern in the second display area is increased, and the touch sensitivity of the display area near the slotted area of the touch display panel is effectively improved.
Description
Technical Field
The present invention relates to the field of touch display, and in particular, to a touch display panel and a touch display device.
Background
With the rapid development of display technology, touch display technology has gradually spread throughout the lives of people. Among the existing touch display panels, the capacitive touch display panel has the advantages of long service life, high light transmittance, capability of supporting multi-point touch, and the like, and becomes a hot spot of the touch display technology. In recent years, in order to meet diversified demands, an edge of an existing touch display panel is generally cut, for example, a slotted area with a certain area is dug at an upper edge of the touch display panel, and a functional module such as a camera is embedded in the slotted area.
However, in the prior art, when the touch display panel is dug out of the slotted area for embedding the functional modules such as the camera, the touch driving electrodes and the touch sensing electrodes of the touch display panel are usually missing, and the resistance values of the touch driving electrodes or the touch sensing electrodes missing part of the electrodes are increased, and the capacitance values are reduced, so that the touch signals conducted by the touch electrodes are weakened, and the touch sensitivity of the touch display panel is reduced.
Disclosure of Invention
In view of the above, it is desirable to provide a touch display panel and a touch display device capable of improving the touch sensitivity of the display area near the notch area.
The utility model provides a touch-control display panel, includes the display area and surrounds the non-display area of display area, and the non-display area is including setting up at least one fluting district on the display area optional position all around, and the display area includes first display area and second display area, and the second display area is located between first display area and the fluting district, and first display area and second display area include:
the device comprises a plurality of induction electrodes arranged along a first direction and a plurality of driving electrodes arranged along a second direction, wherein the induction electrodes and the driving electrodes are arranged in a cross insulation mode;
the sensing electrode and/or the driving electrode comprise a plurality of electrode units, and each electrode unit comprises an electrode pattern and at least one dummy pattern;
the dummy patterns of the electrode units in the second display area are electrically connected with the electrode patterns.
According to the touch display panel, the display area of the touch display panel is divided into the first display area far away from the groove area and the second display area close to the groove area, the virtual patterns of the electrode units in the second display area are electrically connected with the electrode patterns, the area of the virtual patterns in the second display area is reduced, the area of the electrode patterns in the second display area is increased, the mutual capacitance value between the electrode units in the second display area is increased, the resistance value of the electrode units in the second display area is reduced, and the touch sensitivity of the display area near the groove area of the touch display panel is effectively improved.
In one embodiment, the second display area comprises an area of at least one row or at least one column of electrode units arranged around the grooved area.
In one embodiment, the electrode patterns are made of a conductive material, the conductive material encloses at least one grid, and the dummy patterns are arranged in the grid in a one-to-one correspondence.
In one embodiment, electrically connecting the dummy pattern and the electrode pattern includes electrically connecting the dummy pattern and a conductive material on the mesh on which the dummy pattern is located.
In one embodiment, the number of the connection lines electrically connecting the dummy patterns and the conductive material on the grid on which the dummy patterns are located is at least one.
In one embodiment, the electrode units in the second display area are arranged in a staggered manner and crossed with the edges of the adjacent electrode units of different types.
In one embodiment, the edges of the electrode units with the edges staggered crosswise are comb-shaped or wavy.
In one embodiment, the dummy pattern is made of a metal material or a transparent conductive material.
In one embodiment, the electrode pattern is made of a metal material or a transparent conductive material.
A touch display device includes the touch display panel according to any of the above embodiments.
According to the touch display device, the area of the electrode pattern of the electrode unit in the area near the slotted area on the touch display panel is increased or the dead-against area between the electrode unit of the drive electrode and the electrode unit of the induction electrode in the area is increased, so that the touch sensitivity of the display area near the slotted area of the touch display panel is effectively improved, and the touch effect of the display device at any position can be kept consistent.
Drawings
FIG. 1a is a schematic top view of a touch display panel in the prior art;
FIG. 1b is a partially enlarged view of a top view structure diagram of the touch display panel shown in FIG. 1 a;
FIG. 2a is a schematic diagram illustrating a top view structure of a touch display panel according to an embodiment;
FIG. 2b is a partially enlarged view of the top view structure of the touch display panel in FIG. 2 a;
FIG. 2c is a partially enlarged view of a top view of the touch display panel shown in FIG. 2 a;
fig. 3 is a partially enlarged view of a top view structure diagram of a touch display panel in another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the prior art, a touch display panel generally refers to a display panel and a touch film layer disposed on the display panel, wherein a plurality of criss-cross driving electrodes and sensing electrodes are distributed on the touch film layer, mutual capacitance is formed at the intersection of the driving electrodes and the sensing electrodes, and external capacitance formed by finger contact changes the mutual capacitance between the two electrodes, so that the touch display panel detects the specific position of a touch point. However, when the touch display panel is excavated to form a slot for embedding a functional module such as a camera, partial electrodes of the driving electrodes and the sensing electrodes are usually lost, and the resistance values of the driving electrodes or the sensing electrodes of the lost partial electrodes are increased, so that the touch signals of the touch electrodes are weakened, thereby affecting the touch sensitivity of the touch display panel.
Referring to fig. 1a and fig. 1b, fig. 1a shows a schematic top view structure of a touch display panel in the prior art, and fig. 1b shows a partially enlarged view of the schematic top view structure of the touch display panel in fig. 1a (a graph within a diamond dashed line frame in fig. 1 a). As shown in fig. 1a, a plurality of driving electrodes 11 arranged along a first direction and a plurality of sensing electrodes 12 arranged along a second direction are distributed on the touch panel 10, wherein the first direction intersects with the second direction, for example, the first direction may be a transverse direction in fig. 1a, and the second direction may be a longitudinal direction in fig. 1 a. Further, as shown in fig. 1b, the driving electrode 11 and/or the sensing electrode 12 each include a plurality of electrode units 13. When a slotted region is dug at one side of the touch display panel 10, a part of the electrode unit 13 near the slotted region may be missing, on one hand, the resistance value of the electrode unit 13 missing the electrode pattern may be increased, which may weaken the touch signal transmitted by the driving electrode 11 or the sensing electrode 12 where the electrode unit 13 is located; on the other hand, the capacitance of the electrode unit 13 lacking the electrode pattern is also reduced, which reduces the mutual capacitance of the area where the electrode unit 13 is located, and under both aspects, the touch sensitivity of the display area near the grooved area is significantly reduced.
Based on this, the application provides a touch display panel, which includes a display area and a non-display area surrounding the display area, wherein the non-display area includes at least one slotted area disposed at any position around the display area, the display area includes a first display area and a second display area, and the second display area is located between the first display area and the slotted area. In the first display area and the second display area, a plurality of induction electrodes arranged along a first direction and a plurality of driving electrodes arranged along a second direction are distributed, and the induction electrodes and the driving electrodes are arranged in a cross insulation mode. Further, some or all of the sensing electrodes and/or driving electrodes in the display area may include a plurality of electrode units, each of the electrode units includes an electrode pattern and at least one dummy pattern, and the dummy patterns of the electrode units are electrically connected to the electrode patterns in the second display area. According to the touch display panel, the area of the electrode patterns in the second display area is increased by reducing the area of the virtual patterns in the second display area, the mutual capacitance value between the electrode units in the second display area is increased, the resistance value of the electrode units in the second display area is reduced, and therefore the touch sensitivity of the display area near the slotted area of the touch display panel is effectively improved.
Based on the above scheme, the following detailed description is given to specific embodiments with reference to the accompanying drawings.
In an embodiment, referring to fig. 2a, fig. 2b and fig. 2c, fig. 2a illustrates a schematic top view structure of the touch display panel of the present embodiment, and fig. 2b and fig. 2c illustrate partially enlarged views (the figures in the dotted diamond frame in fig. 2 a) of the schematic top view structure of the touch display panel in fig. 2 a. As shown in fig. 2a, the touch display panel 100 includes a display area 110 (a graph within a large rectangular dashed line frame in fig. 2 a) and a non-display area 120 surrounding the display area, wherein the non-display area 120 includes at least one slotted area 121 disposed at any position around the display area 110, the display area 110 of the touch display panel 100 includes a first display area 111 far away from the slotted area 121 and a second display area 112 (a graph within a small rectangular dashed line frame in fig. 2 a) near the slotted area 121, and the second display area 112 is located between the first display area 111 and the slotted area 121. In the first display area 111 and the second display area 112 of the touch panel 100, a plurality of sensing electrodes 113 arranged along a first direction and a plurality of driving electrodes 114 arranged along a second direction are distributed, the plurality of sensing electrodes 113 and the plurality of driving electrodes 114 are arranged in an intersecting and insulating manner, specifically, the sensing electrodes 113 and the driving electrodes 114 may be arranged in layers or in the same layer, and when the sensing electrodes 113 and the driving electrodes 114 are arranged in layers, an insulating layer is arranged between the two layers of electrodes; when the sensing electrode 113 and the driving electrode 114 are disposed on the same layer, the crossing positions of the two electrodes are connected in a bridging manner.
Further, all or a portion of the sensing electrodes 113 and/or all or a portion of the driving electrodes 114 may include a plurality of electrode units 115 in the display area 110, and specifically, the shape of the electrode units 115 may be diamond, square, circle, or other shapes. In the present embodiment, only the diamond-shaped electrodes are taken as an example for explanation, as shown in fig. 2b and fig. 2c, each electrode unit 115 includes one electrode pattern 116 made of a conductive material and at least one dummy pattern 117 located in the electrode pattern, where the electrode pattern 116 is used for forming and conducting a touch signal, and the dummy pattern 117 is used for adjusting an optical path to increase the optical display quality of the touch display panel 100. In general, the dummy patterns 117 are also made of a conductive material and are not connected to any electrical property, but in the area of the display area 110 close to the slotted area 121, i.e. in the second display area 112, some of the electrode units 115 are missing to different degrees, the resistance of the electrode units 115 missing some of the electrodes is increased, and the capacitance is decreased, so that the touch sensitivity of the sensing electrodes 113 or the driving electrodes 114 in the second display area 112 is significantly decreased.
Furthermore, in order to improve the touch sensitivity of the electrode unit 115 lacking a part of the electrodes in the second display area 112, the dummy pattern 117 of the electrode unit 115 in the second display area 112 may be electrically connected to the electrode pattern 116, so that the dummy pattern 117 is electrically connected, and the dummy pattern 117 is converted into the electrode pattern 116, and thus, by such an arrangement, the area of the electrode pattern of the electrode unit 115 in the second display area 112 is increased, and meanwhile, the capacitance between the capacitor plates in the second display area 112 is also increased, thereby effectively improving the touch sensitivity of the electrode unit 115 in the second display area 112 of the touch display panel. In this embodiment, the area of the second display area may be defined according to an actual situation, specifically, the second display area may be an area of at least one row or at least one column of electrode units near the periphery of the non-display area, for example, the second display area may be an area of electrode units within three rows or three columns near the periphery of the non-display area, and the area covered by the second display area may be selected according to an actual process or an actual product, which is not specifically limited herein.
According to the touch display panel, the display area of the touch display panel is divided into the first display area far away from the groove area and the second display area close to the groove area, the virtual patterns of the electrode units in the second display area are electrically connected with the electrode patterns, the area of the virtual patterns in the second display area is reduced, the area of the electrode patterns in the second display area is increased, the mutual capacitance value between the electrode units in the second display area is increased, the resistance value of the electrode units in the second display area is reduced, and the touch sensitivity of the display area near the groove area of the touch display panel is effectively improved.
In one embodiment, as shown in fig. 2a, the non-display area 120 includes at least one slotted area 121 disposed at any position around the display area 110, and the second display area 112 may include at least one row or at least one column of electrode units disposed around the slotted area 121. The area contains all the electrode units with defects near the slotted zone 121, and the virtual patterns of the electrode units in the area are converted into electrode patterns, so that the touch sensitivity of the electrode units in the display zone near the slotted zone can be effectively improved. In another embodiment, the non-display area 120 further includes a frame area 122 located around the display area 110, and the second display area 112 further includes an area where at least one row or at least one column of electrode units are disposed around the frame area 122, in which the dummy patterns of the electrode units may also be electrically connected to the electrode patterns to improve the touch sensitivity of the electrode units in the display area near the frame area.
In one embodiment, the electrode pattern may be a grid pattern made of a conductive material. Specifically, the electrode pattern may be a prism having a plurality of hollow grids, and a dummy pattern is disposed in each hollow grid to balance the light emitting effect of the touch display panel. As shown in fig. 2b and 2c, an electrode pattern 116 usually includes a plurality of grids 118 with equal size, the grids 118 are electrically connected to form an integral body and form an electrode pattern 116, a dummy pattern 117 is correspondingly disposed in each grid 118, and normally, the dummy pattern 117 is not connected to any electrical property, but in this embodiment, a part of the electrode pattern near the electrode in the slotted region is damaged due to cutting, and at this time, the dummy pattern 117 and the electrode pattern 116 can be electrically connected to increase the area of the electrode pattern 116, thereby increasing the touch sensitivity of these regions. In this embodiment, the patterns of the electrode pattern, the hollow grid and the dummy pattern are not specifically limited, and may be selected according to the actual process or the product requirement.
In one embodiment, the dummy pattern and the electrode pattern may be electrically connected by electrically connecting the dummy pattern and the conductive material on the mesh on which the dummy pattern is located. Specifically, there are many ways to electrically connect the dummy patterns, and it is preferable that the dummy patterns are electrically connected to the conductive material on the grid on which the dummy patterns are located through the connection lines. Furthermore, there may be many connection ways for electrically connecting the dummy pattern and the conductive material on the grid where the dummy pattern is located, and the connection line may connect any position of the dummy pattern and the electrode pattern, wherein fig. 2b and fig. 2c list two connection ways. In this embodiment, the connection manner of the dummy electrode and the electrode pattern may be determined according to actual process or product requirements, and is not limited herein.
In one embodiment, the number of the connection lines electrically connecting the dummy patterns and the conductive material on the grid on which the dummy patterns are located is at least one. Specifically, as shown in fig. 2b and fig. 2c, one or more connecting lines 119 may be used to electrically connect the dummy patterns 117 and the conductive material on the grid where the dummy patterns 117 are located, in this embodiment, the more connecting lines 119, the more secure the connection between the dummy patterns 117 and the electrode patterns 116, and the better the electrical transmission effect. At the same time, however, the number of connection lines 119 connecting the dummy patterns 117 and the electrode patterns 116 is not necessarily too large, which increases the complexity of the manufacturing process, and thus, in a preferred embodiment, the number of connection lines electrically connecting the dummy patterns and the conductive material on the grid on which the dummy patterns are located is 2-4.
In one embodiment, the electrode units in the second display region may be arranged to be staggered across edges of adjacent electrode units of different kinds. Specifically, as shown in fig. 3, in the second display region, the electrode unit of the driving electrode may be disposed to be staggered with respect to the edge of the electrode unit of the adjacent sensing electrode, or the electrode unit of the sensing electrode may be disposed to be staggered with respect to the edge of the electrode unit of the adjacent driving electrode. Through the nested structure design, the dead against area of the electrode units of the driving electrode and the sensing electrode can be increased, so that the effective capacitance value between the capacitor plates is effectively increased, and the touch sensitivity of a display area near a slotted area is improved.
In one embodiment, the edges of the electrode units with the staggered edges may be comb-shaped, wavy or other shapes that can increase the area of the electrode units facing each other. Through the arrangement, the effective capacitance value between the driving electrode and the sensing electrode can be improved, so that the touch sensitivity of the touch panel is increased. In this embodiment, the shape of the edge of the electrode unit with the edge staggered in the crossing manner is not limited, and may be determined according to the actual process or the product requirement.
In one embodiment, the dummy pattern may be made of a metal material or a transparent conductive material. The metal material may include copper, titanium aluminum, titanium, silver, nickel and other metal materials, and the transparent conductive material may include indium tin oxide, graphene, nano silver wire and other materials.
In one embodiment, the material of the electrode pattern may be a metal material or a transparent conductive material. The metal material may include copper, titanium-aluminum alloy, silver, nickel and other metal materials, and the transparent conductive material may include indium tin oxide, graphene, nano silver wire and other materials. In this embodiment, the material of the electrode pattern and the dummy pattern may be the same or different. It is understood that the material of the electrode pattern and the dummy pattern can be kept consistent, which can save the process and the cost, and thus can be used as a preferred solution of this embodiment.
In one embodiment, there is also provided a touch display device, including: the touch display panel according to the above embodiment. Specifically, the touch display device can be any product or component with display and touch functions, such as a mobile phone, a tablet personal computer, a television, a display, a notebook computer, a digital photo frame, a navigator, an intelligent wearable device, and the like. The touch display device may include the touch display panel according to the above embodiment, and thus, when the touch display device is provided with the slotted area, the display area near the slotted area may have a more sensitive touch performance. Other essential components of the touch display device are understood by those skilled in the art, and are not described herein.
According to the touch display device, the area of the electrode pattern of the electrode unit in the area near the slotted area on the touch display panel is increased or the dead-against area between the electrode unit of the drive electrode and the electrode unit of the induction electrode in the area is increased, so that the touch sensitivity of the display area near the slotted area of the touch display panel is effectively improved, and the touch effect of the display device at any position can be kept consistent.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The touch display panel is characterized by comprising a display area and a non-display area surrounding the display area, wherein the non-display area comprises at least one slotted area arranged at any position around the display area, the display area comprises a first display area and a second display area, the second display area is positioned between the first display area and the slotted area, and the first display area and the second display area comprise:
the device comprises a plurality of induction electrodes arranged along a first direction and a plurality of driving electrodes arranged along a second direction, wherein the induction electrodes and the driving electrodes are arranged in a cross insulation mode;
the sensing electrode and/or the driving electrode comprise a plurality of electrode units, and each electrode unit comprises an electrode pattern and at least one dummy pattern;
the virtual patterns of the electrode units in the second display area are electrically connected with the electrode patterns;
in the second display area, part of the virtual patterns of the electrode units are electrically connected with the electrode patterns through at least two connecting lines, and the at least two connecting lines of the part of the electrode units are uniformly distributed around the virtual patterns.
2. The touch display panel of claim 1, wherein the second display area comprises at least one row or at least one column of electrode units disposed around the grooved area.
3. The touch display panel of claim 2, wherein the electrode patterns are made of a conductive material, the conductive material encloses at least one grid, and the dummy patterns are disposed in the grid in a one-to-one correspondence.
4. The touch display panel of claim 3, wherein the dummy pattern electrically connected to the electrode pattern comprises the dummy pattern electrically connected to a conductive material on a grid on which the dummy pattern is located.
5. The touch display panel according to claim 4, wherein the dummy pattern has at least one connecting line electrically connected to the conductive material on the grid on which the dummy pattern is located.
6. The touch display panel according to any one of claims 1 to 5, wherein the electrode units in the second display area are staggered with respect to edges of adjacent electrode units of different types.
7. The touch display panel according to claim 6, wherein the edges of the electrode units arranged with the edges staggered in a crossing manner are comb-shaped or wavy.
8. The touch display panel according to any one of claims 1 to 5, wherein the dummy pattern is made of a metal material or a transparent conductive material.
9. The touch display panel according to any one of claims 1 to 5, wherein the electrode pattern is made of a metal material or a transparent conductive material.
10. A touch display device comprising the touch display panel according to any one of claims 1 to 9.
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| CN201910102781.8A CN109871157B (en) | 2019-02-01 | 2019-02-01 | Touch display panel and touch display device |
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| CN201910102781.8A CN109871157B (en) | 2019-02-01 | 2019-02-01 | Touch display panel and touch display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110308819A (en) * | 2019-06-27 | 2019-10-08 | 武汉天马微电子有限公司 | Display panel and display device |
| CN111158516B (en) * | 2019-12-04 | 2021-06-25 | 武汉华星光电半导体显示技术有限公司 | Touch substrate and touch screen |
| KR20210079816A (en) * | 2019-12-20 | 2021-06-30 | 엘지디스플레이 주식회사 | Display apparatus comprisnig see-through area for camera |
| CN111045552A (en) * | 2019-12-31 | 2020-04-21 | 信利（惠州）智能显示有限公司 | Touch panel and touch display screen |
| CN111538438B (en) * | 2020-04-23 | 2023-10-27 | 京东方科技集团股份有限公司 | Display substrate and display panel |
| US11592947B2 (en) | 2020-06-30 | 2023-02-28 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Touch structure and touch display panel |
| CN112578938B (en) * | 2020-12-08 | 2022-12-06 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN112394844A (en) | 2020-12-09 | 2021-02-23 | 合肥鑫晟光电科技有限公司 | Touch substrate and touch display device |
| CN112947784B (en) * | 2021-02-03 | 2023-02-28 | 武汉华星光电半导体显示技术有限公司 | Touch panel and display device |
| CN113311966A (en) * | 2021-06-08 | 2021-08-27 | 武汉华星光电技术有限公司 | Touch display panel |
| CN113721790B (en) * | 2021-09-03 | 2023-06-27 | 武汉华星光电半导体显示技术有限公司 | Touch display panel and display device |
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