CN111552401B - Touch control display device - Google Patents
Touch control display device Download PDFInfo
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- CN111552401B CN111552401B CN202010321419.2A CN202010321419A CN111552401B CN 111552401 B CN111552401 B CN 111552401B CN 202010321419 A CN202010321419 A CN 202010321419A CN 111552401 B CN111552401 B CN 111552401B
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- boundary line
- adhesive layer
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- optical adhesive
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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
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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
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
Abstract
The invention relates to a touch display device which comprises a touch sensor, a display panel and a first optical adhesive layer, wherein a touch module comprises an electrode layer and an insulating adhesive layer, the insulating adhesive layer is arranged around the electrode layer in a surrounding manner, and a first hollow area is formed in the insulating adhesive layer; the display panel is arranged below the touch module; the first optical adhesive layer is arranged between the display panel and the touch module, the first optical adhesive layer and the insulating adhesive layer are partially overlapped to form an overlapping area, and the overlapping area is annularly arranged around the electrode layer; the first optical adhesive layer is provided with a first hollow area, the first hollow area corresponds to the second hollow area in position and is located in the overlapping area, and the first hollow area and the second hollow area are used for monitoring the bonding position between the first optical adhesive layer and the insulating adhesive layer when the first optical adhesive layer is bonded. The touch display device can ensure that the peripheries of the first optical adhesive layer and the insulating adhesive layer can be overlapped, and further can prevent external air or water vapor from invading the circuit structure of the electrode layer.
Description
Technical Field
The present invention relates to the field of touch display devices, and in particular, to a touch display device.
Background
The touch display device generally includes a touch sensor and a display panel, the display panel is disposed below the touch sensor, the touch sensor includes a base layer and an electrode layer disposed on the base layer, the electrode layer faces the display panel and partially extends to be exposed outside the display panel for connecting with external circuits. In order to avoid the exposed electrode layer from being damaged, an insulating adhesive layer is arranged to cover the exposed electrode layer. The display panel is bonded with the touch sensor through the optical adhesive layer, and the optical adhesive layer and the insulating adhesive layer are partially overlapped to form an overlapping area, so that no gap exists between the optical adhesive layer and the insulating adhesive layer, and the corrosion of external water vapor can be prevented.
However, in the manufacturing process of the touch display device, when the optical adhesive layer is attached to the touch sensor, the attachment accuracy of the optical adhesive layer is difficult to control, so that the optical adhesive layer is easily attached to the touch sensor, and certain areas between the optical adhesive layer and the insulating adhesive layer cannot be overlapped. Therefore, the external air or water vapor invades the circuit structure of the electrode layer from the region, and especially when the electrode layer is a metal mesh layer, the invasion of the external air or water vapor easily causes silver oxidation or silver corrosion in the metal mesh layer, and the performance of the touch display device is affected.
Disclosure of Invention
Accordingly, the present invention provides a touch display device to solve the above problems.
The touch display device comprises a touch module, a display panel and a first optical adhesive layer: the touch module comprises an electrode layer and an insulating adhesive layer, wherein the insulating adhesive layer is arranged around the electrode layer in a surrounding mode, and a first hollow area is formed in the insulating adhesive layer; the display panel is arranged below the touch module; the first optical adhesive layer is arranged between the display panel and the touch module, the first optical adhesive layer and the insulating adhesive layer are partially overlapped to form an overlapping area, and the overlapping area is annularly arranged on the periphery of the electrode layer; the first optical adhesive layer is provided with a first hollowed-out area, the first hollowed-out area corresponds to the second hollowed-out area in position and is located in the overlapped area, and the first hollowed-out area and the second hollowed-out area are used for monitoring the attaching position between the first optical adhesive layer and the insulating adhesive layer during attaching of the first optical adhesive layer.
In one embodiment, the first hollow-out area is in a ring-shaped structure and comprises a first boundary line and a second boundary line which are spaced from each other, and the second boundary line is positioned outside the first boundary line; the second hollow-out area is of a hollow structure and is provided with a third boundary line, and the third boundary line is located between the first boundary line and the second boundary line.
In one embodiment, the minimum distance X3 between the second boundary line and the first boundary line is greater than 2D; and when the central position of the first hollow-out area corresponds to the central position of the second hollow-out area, the minimum distance between the second boundary line and the third boundary line is greater than or equal to 0.65 mm.
In one embodiment, the electrode layer includes a touch sensing area and a lead area, the lead area is located at the periphery of the touch sensing area, the insulating glue is disposed in the lead area of the electrode layer, the lead area includes a routing area and a blank area, the routing area is provided with a signal line, and the position of the first hollow area on the insulating glue layer corresponds to the blank area.
In one embodiment, the minimum distance between the second boundary line and the signal line is greater than or equal to 0.3 mm.
In one embodiment, said third borderline and said first borderline are parallel to each other; the third boundary line surrounds the first boundary line, or the first boundary line is square or rectangular, the third boundary line comprises three edges which are connected in sequence, and the three edges are arranged outside the first boundary line; or, the first boundary line is square or rectangular, the third boundary line includes two sides connected to each other, and the two sides are disposed outside the first boundary line.
In one embodiment, the minimum width dimension of the overlap region is D; when the third boundary line surrounds the first boundary line, the sum of the minimum distances between the third boundary line and the first boundary line at two opposite ends is equal to 2D; when the first boundary line is square or rectangular, and the third boundary line comprises three edges which are connected in sequence, the sum of the minimum distances between two opposite edges and the first boundary line is equal to 2D, and the minimum distance between the other edge and the first boundary line is greater than zero and smaller than 2D; when the first boundary line is square or rectangular and the third boundary line comprises two sides connected to each other, the minimum distance between each side and the first boundary line is greater than zero and less than 2D.
In one embodiment, the number of the first hollow-out areas and the second hollow-out areas is more than two, and different first hollow-out areas are arranged at intervals.
In one embodiment, a third hollow-out area is further formed on the insulating layer, the third hollow-out area is far away from the first optical adhesive layer, and the third hollow-out area is used for assisting in monitoring a bonding position between the first optical adhesive layer and the insulating adhesive layer.
In one embodiment, the touch module further includes a cover plate and a second optical adhesive layer, and the second optical adhesive layer is located between the cover plate and one side of the electrode layer away from the first optical adhesive layer.
The touch display device has the beneficial effects that:
according to the touch display device, the first hollowed-out area is formed in the insulating adhesive layer, the second hollowed-out area is formed in the first optical adhesive layer, corresponds to the first hollowed-out area in position and is located in the overlapping area of the first optical adhesive layer and the insulating adhesive layer, so that in the process of attaching the first optical adhesive layer and the insulating adhesive layer, the attaching position between the first optical adhesive layer and the insulating adhesive layer can be monitored through the first hollowed-out area and the second hollowed-out area, the fact that the peripheries of the first optical adhesive layer and the insulating adhesive layer can be overlapped is guaranteed, and further the fact that external air or water vapor invades the circuit structure of the electrode layer can be avoided.
Drawings
Fig. 1 is a longitudinal cross-sectional view of a touch display device according to an embodiment of the invention.
Fig. 2 is a schematic structural view of a touch display device according to an embodiment of the invention before a first optical adhesive layer and an insulating adhesive layer are attached to each other.
Fig. 3 is a schematic structural view of a touch display device according to an embodiment of the present invention after a first optical adhesive layer and an insulating adhesive layer are bonded.
Fig. 4 is a schematic structural view of a touch display device according to another embodiment of the present invention after a first optical adhesive layer and an insulating adhesive layer are bonded.
Fig. 5 is a schematic structural view of a touch display device according to another embodiment of the present invention after a first optical adhesive layer and an insulating adhesive layer are attached to each other.
Fig. 6 is a schematic structural view of a touch display device according to another embodiment of the present invention after a first optical adhesive layer and an insulating adhesive layer are attached to each other.
Fig. 7 is a schematic structural view of a touch display device according to another embodiment of the present invention after a first optical adhesive layer and an insulating adhesive layer are attached to each other.
Fig. 8 is a schematic structural view of a touch display device according to another embodiment of the present invention after a first optical adhesive layer and an insulating adhesive layer are attached to each other.
Fig. 9 is a schematic structural view of a touch display device according to still another embodiment of the present invention after a first optical adhesive layer and an insulating adhesive layer are attached to each other.
Reference numerals are as follows:
the touch module 100, the cover plate 110, the second optical adhesive layer 120, the touch sensor 130, the glass substrate 131, the first electrode layer 132, the second electrode layer 133, the touch sensing area 134, the lead area 135, the signal line 136, the insulating adhesive layer 140, the ink layer 150, the first hollow area 160, the first boundary line 161, the second boundary line 162, the third hollow area 170, the overlapping area 180, the display panel 200, the first optical adhesive layer 300, the second hollow area 310, the third boundary line 311, the display area 400, and the non-display area 500.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "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," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
In one embodiment, as shown in fig. 1, the touch display device of the invention includes a touch module 100, a display panel 200, and a first optical adhesive layer 300, wherein the first optical adhesive layer 300 is disposed between the touch module 100 and the display panel 200, and is used for bonding the touch module 100 and the display panel 200 together by a full-plane bonding technique. The touch module 100 includes a cover plate 110, a second optical adhesive layer 120 and a touch sensor 130, wherein the second optical adhesive layer 120 is disposed between the touch sensor 130 and the cover plate 110, and is used for bonding the touch sensor 130 and the cover plate 110 together by a full-plane bonding technique. In a specific embodiment, the display panel 200 may be a Liquid Crystal Display (LCD), an organic electroluminescent display (OLED), or an electrophoretic display. The touch display device can be applied to mobile terminals such as smart phones, notebook computers, tablet computers, portable phones, video phones, digital still cameras, electronic book readers, Portable Multimedia Players (PMPs), mobile medical devices, wearable devices, and the like.
In the embodiment shown in fig. 1, the touch sensor 130 adopts a glass-film double-layer structure (glass-film2, GF2), and includes a glass substrate 131, a first electrode layer 132 and a second electrode layer 133, wherein the first electrode layer 132 and the second electrode layer 133 are respectively formed on the front and back sides of the glass substrate 131, the first electrode layer 132 is close to the second optical adhesive layer 120, and the second electrode layer 133 is far from the second optical adhesive layer 120. In one embodiment, the first electrode layer 132 is a sensing electrode layer, and the second electrode layer 133 is a driving electrode layer. In addition, it is understood that in other embodiments, the glass substrate 131 may be replaced by other transparent substrates. Alternatively, in other embodiments, the touch sensor 130 may further include only a substrate and a touch electrode layer formed on the substrate, the touch electrode layer having a first electrode pattern and a second electrode pattern disposed thereon, and the first electrode pattern and the second electrode pattern are disposed in a crossing manner and insulated at the crossing. In addition, in other embodiments, the touch sensor 130 may further include only one touch electrode layer formed on one side of the cover plate close to the second optical adhesive layer, and the touch electrode layer is provided with a first electrode pattern and a second electrode pattern.
In addition, as shown in fig. 1, the touch module 100 further includes an ink layer 150, the ink layer 150 is disposed on a periphery of the cover plate 110 near the second optical adhesive layer 120, and the ink layer 150 divides the touch display device into a display area 400 and a non-display area 500, wherein the non-display area 500 corresponds to the ink layer 150 and is located in a peripheral area, and the display area 400 is located in a central area and is surrounded by the non-display area 500. The second electrode layer 133 includes a touch sensing area 134 and a lead area 135, wherein the lead area 135 corresponds to the non-display area 500 and is located at the periphery of the touch sensing area 134; the touch sensing area 134 corresponds to the display area 400 and is used for sensing a touch signal. The lead area 135 is provided with a signal line, one end of which is connected to the touch sensing area and the other end of which is connected to the driving control module, for conducting out the touch signal. As shown in fig. 1, the second electrode layer 133 faces the display panel 200 and partially extends and is exposed outside the display panel 200 to be connected to an external circuit, that is, the lateral dimension of the touch sensor 130 is greater than the lateral dimension of the display panel 200, so that the lead region 135 of the second electrode layer 133 is exposed outside the display panel 200, the touch module 100 further includes an insulating adhesive layer 140, the insulating adhesive layer 140 is disposed on a side of the second electrode layer 133 close to the display panel 200, and the insulating adhesive layer 140 is disposed around the second electrode layer 133 for protecting the circuit structure included in the lead region 135 of the second electrode layer 133.
As shown in fig. 1 to fig. 3, wherein fig. 1 is a longitudinal cross-sectional view of the touch display device, fig. 2 is a schematic structural view before the first optical adhesive layer 300 and the insulating adhesive layer 140 are not attached, and fig. 3 is a schematic structural view after the first optical adhesive layer 300 and the insulating adhesive layer 140 are attached, wherein in fig. 2 and fig. 3, the insulating adhesive layer 140 is disposed around the second electrode layer 133 in a square ring shape, the lead region 135 of the second electrode layer 133 includes a wiring region and a blank region, the wiring region is provided with a signal line 136, it should be noted that in fig. 2 and fig. 3, only the signal line 136 in the wiring region of the second electrode layer 133 is shown by a dotted line, and other structures of the second electrode layer 133 are not shown. The position of the first hollow-out area 160 on the insulating layer 140 corresponds to the blank area, that is, the signal line 136 is not located below the first hollow-out area 160 on the insulating layer 140, so that external air or water vapor can be prevented from invading the circuit structure of the second electrode layer 133 through the first hollow-out area 160 and the second hollow-out area 310. In addition, in fig. 3, the inner edge line of the insulating adhesive layer 140 is covered by the first optical adhesive layer 300, and thus, the inner edge line of the insulating adhesive layer 140 may be represented by a dotted line, and the second boundary line 162 of the first hollow area 160 is covered by the first optical adhesive layer 300, and thus, the second boundary line 162 of the first hollow area 160 may be represented by a dotted line.
As shown in fig. 1 and 3, the first optical adhesive layer 300 is disposed between the display panel 200 and the touch sensor 130, the first optical adhesive layer 300 and the insulating adhesive layer 140 are partially overlapped to form an overlapping region 180, and the overlapping region 180 is disposed around the second electrode layer 133 to prevent external air or water vapor from invading the circuit structure of the second electrode layer 133. As shown in fig. 1 to 3, the first hollow-out area 160 is disposed on the insulating layer 140, the second hollow-out area 310 is disposed on the first optical adhesive, the second hollow-out area 310 corresponds to the first hollow-out area 160 and is located in the overlap area 180, the first hollow-out area 160 and the second hollow-out area 310 are used for monitoring the bonding position between the first optical adhesive 300 and the insulating layer 140, so as to prevent the bonding deviation, thereby ensuring that the peripheries of the first optical adhesive 300 and the insulating layer 140 can be overlapped, and further avoiding the external air or the water vapor from invading the circuit structure of the second electrode layer 133. In a specific embodiment, the second electrode layer is a metal mesh layer,
as shown in fig. 2 and 3, the first hollow 160 has a ring structure, and includes a first boundary line 161 and a second boundary line 162 spaced apart from each other, and the second boundary line 162 is located outside the first boundary line 161; the second hollow-out region 310 is a hollow structure and has a third boundary 311, and after the first optical adhesive layer 300 is attached to the insulating adhesive layer 140, the third boundary 311 is located between the first boundary 161 and the second boundary 162. In addition, as shown in fig. 3, the overlapping regions 180 between the first optical adhesive layer 300 and the insulating adhesive layer 140 are not uniformly distributed, in the embodiment shown in fig. 3, the overlapping regions 180 include a bottom portion, a top portion, a left side portion and a right side portion, the area of the overlapping region 180 at the bottom portion is larger, the area of the overlapping region 180 at the top portion, the left side portion and the right side portion is smaller, and the first hollow-out region 160 on the insulating adhesive layer 140 and the second hollow-out region 310 on the first optical adhesive layer 300 are located in the overlapping region 180 at the bottom portion.
In one embodiment, as shown in fig. 3, in order to monitor the bonding position between the first optical adhesive layer 300 and the insulating adhesive layer 140 through the first and second hollow-out regions 160 and 310 and prevent the first and second optical adhesive layers from being misaligned, the width of the overlapping region 180 of the top, the left and the right sides is equal to D, the third boundary line 311 is parallel to the first boundary line 161, the first boundary line 161 and the third boundary line 311 are square, and the third boundary line 311 surrounds the first boundary line 161. When the first optical adhesive layer 300 is attached to the insulating adhesive layer 140, in an ideal state, the center position of the first hollow-out region 160 corresponds to the center position of the second hollow-out region 310, as shown in fig. 3, and the minimum distance between each side of the third boundary line 311 and the first boundary line 161 is D. If the first optical adhesive layer 300 is shifted to the left relative to the insulating adhesive layer 140, as shown in fig. 4, the width of the overlapping area 180 on the left side is increased, the width of the overlapping area 180 on the right side is decreased, the minimum distance between the left side of the third boundary line 311 and the first boundary line 161 is increased to X1, and the minimum distance between the right side of the third boundary line 311 and the first boundary line 161 is decreased to X2, so long as X1+ X2 is 2D, the width of the overlapping area 180 on the right side is greater than zero, the first optical adhesive layer 300 and the periphery of the insulating adhesive layer 140 can be overlapped, and the external air or water vapor can be prevented from invading the circuit structure of the second electrode layer 133.
Similarly, if the first optical adhesive layer 300 is shifted to the right, upward or downward with respect to the insulating adhesive layer 140, as long as the sum of the minimum distances between the third boundary line 311 and the first boundary line 161 at the two opposite ends is equal to 2D, the peripheries of the first optical adhesive layer 300 and the insulating adhesive layer 140 can be ensured to be overlapped, and then the external air or water vapor is prevented from invading the circuit structure of the second electrode layer 133. It should be noted that in the embodiment shown in fig. 3, the width dimensions of the overlapping regions 180 of the top, left and right sides are all equal to D, and it is understood that in other embodiments, the width dimensions of the overlapping regions 180 of the top, left and right sides may not be equal, and the minimum width dimension of the overlapping regions 180 is D. In addition, as shown in fig. 4, in order to avoid the third boundary line 311 from being shifted to the outside of the second boundary line 162 and thus the second boundary line 162 falls into the second hollow area 310 when the first optical adhesive layer 300 is shifted to the left with respect to the insulating adhesive layer 140, and thus the judgment of the distance is affected, as shown in fig. 2 and 3, the minimum distance X3 between the second boundary line 162 and the first boundary line 161 is greater than 2D, so that it can be ensured that the third boundary line 311 is always located between the second boundary line 162 and the first boundary line 161 in the case of normal shift. In one embodiment, to meet the requirement of the screen printing tolerance, as shown in fig. 3, when the center position of the first hollow-out region 160 corresponds to the center position of the second hollow-out region 310, the minimum distance X4 between the second boundary line 162 and the third boundary line 311 is greater than or equal to 0.65 mm. In one embodiment, as shown in fig. 2, the first hollow-out areas 160 on the insulation layer 140 correspond to the blank areas, and the minimum distance X5 between the second boundary line 162 and the signal line 136 is greater than or equal to 0.3mm in order to meet the requirement of screen printing tolerance.
In the present invention, the shapes of the first boundary line 161 and the third boundary line 311 are not limited, but in the embodiment shown in fig. 3, the first boundary line 161 and the third boundary line 311 are both square, and the third boundary line 311 surrounds the first boundary line 161. It will be appreciated that in other embodiments, third boundary line 311 surrounds first boundary line 161, and that first boundary line 161 and third boundary line 311 may each have a circular, elliptical, cross-like shape, etc. In another embodiment, limited by the size of the overlapping region 180 between the first optical adhesive layer 300 and the insulating adhesive layer 140, the first boundary line 161 and the third boundary line 311 may also have shapes as shown in fig. 5, in which the first boundary line 161 and the third boundary line 311 are both located in the bottom overlapping region 180, the first boundary line 161 is square or rectangular, and the third boundary line 311 is inverted U-shaped, that is, the third boundary line 311 includes three edges connected in sequence, and the three edges are disposed outside the first boundary line 161. As with the determining method in the embodiment shown in fig. 3 and fig. 4, in the embodiment shown in fig. 5, in the process of bonding the first optical adhesive layer 300 and the insulating adhesive layer 140, as long as the sum of the distances between the two opposite sides of the third boundary line 311 and the first boundary line 161 is ensured to be equal to 2D, and the distance between the other side and the first boundary line 161 is greater than zero and less than 2D, where D is the minimum width of the overlapping area 180, it can be ensured that the peripheries of the first optical adhesive layer 300 and the insulating adhesive layer 140 can be overlapped, thereby preventing the external air or water vapor from invading the circuit structure of the second electrode layer 133. It is understood that, in other embodiments, when the first hollow-out area 160 and the second hollow-out area 310 are both located in the top overlapping area 180, the third boundary line 311 may also be in a regular U shape.
In another embodiment, limited by the size of the overlapping region 180 between the first optical adhesive layer 300 and the insulating adhesive layer 140, the first boundary line 161 and the third boundary line 311 may also have shapes as shown in fig. 6, wherein the first boundary line 161 and the third boundary line 311 are both located at the lower left corner of the overlapping region 180, the first boundary line 161 is square or rectangular, the third boundary line 311 is inverted L-shaped, and the third boundary line 311 includes two sides connected to each other, and the two sides are disposed outside the first boundary line 161. In the embodiment shown in fig. 5, as long as the distance between each edge of the third boundary line 311 and the first boundary line 161 is greater than zero and less than 2D in the process of attaching the first optical adhesive layer 300 to the insulating adhesive layer 140, where D is the minimum width of the overlapping region 180, the peripheries of the first optical adhesive layer 300 and the insulating adhesive layer 140 can be ensured to be overlapped, thereby preventing external air or water vapor from invading the circuit structure of the second electrode layer 133. It will be appreciated that in other embodiments, the third borderline 311 may also have a positive L-shape when both the first borderline 161 and the third borderline 311 are located in the upper right corner of the overlap region 180.
In one embodiment, in order to further prevent the first optical adhesive layer 300 from being attached to the insulating adhesive layer 140 in a deviation manner, the attaching includes a deviation or a rotation, as shown in fig. 7 and 8, the number of the first hollow-out areas 160 and the second hollow-out areas 310 are two, and different first hollow-out areas 160 are spaced apart from each other. In the embodiment shown in fig. 7, only the area of the bottom overlapping area 180 is large enough, and both the two first hollow-out areas 160 on the insulating layer 140 are located in the bottom overlapping area 180, and both the two first hollow-out areas 160 are located in the blank area of the overlapping area 180, i.e., there is no signal line 136 below both the two first hollow-out areas 160. In the embodiment shown in fig. 8, the areas of the bottom overlapping area 180 and the top overlapping area 180 are both large enough, and the two first hollow-out areas 160 are diagonally arranged, so that the rotation of the first optical adhesive layer 300 relative to the insulating adhesive layer 140 can be strictly monitored, the first optical adhesive layer 300 and the periphery of the insulating adhesive layer 140 can be ensured to be overlapped, and the external air or water vapor is prevented from invading the circuit structure of the second electrode layer 133. Because the second hollow-out regions 310 at the lower left corner and/or the upper right corner deviate significantly from the first hollow-out regions 160 whenever the first optical adhesive layer 300 is rotated with respect to the insulating adhesive layer 140. In addition, it is understood that, in other embodiments, the number of the first hollow-out areas 160 and the second hollow-out areas 310 may also be more than two.
In one embodiment, limited by the size of the overlapping region 180 between the first optical adhesive layer 300 and the insulating adhesive layer 140, as shown in fig. 9, only the area of the overlapping region 180 at the bottom is large enough, the insulating layer is further provided with a third hollow-out region 170, the third hollow-out region 170 is far away from the first optical adhesive layer 300 and is diagonally arranged with respect to the first hollow-out region 160, the minimum distances between the third hollow-out region 170 and two adjacent sides of the first optical adhesive layer 300 are Y1 and Y2, respectively, during the bonding process, the first hollow-out region 160 and the third hollow-out region 170 are monitored at the same time, so that the rotation of the first optical adhesive layer 300 relative to the insulating adhesive layer 140 can be strictly monitored, the first optical adhesive layer 300 and the insulating adhesive layer 140 can be ensured to be overlapped all around, and further, the external air or water vapor is prevented from invading the circuit structure of the second electrode layer 133. Because the second hollow-out area 310 at the lower left corner deviates significantly from the first hollow-out area 160 whenever the first optical adhesive layer 300 rotates relative to the insulating adhesive layer 140, or the minimum distances Y1 and Y2 between the third hollow-out area 170 at the upper right corner and the first optical adhesive layer 300 change beyond the design value.
According to the touch display device, the first hollow area 160 is formed in the insulating layer 140, the second hollow area 310 is formed in the first optical adhesive layer 300, the second hollow area 310 corresponds to the first hollow area 160 in position and is located in the overlapping area 180 between the first optical adhesive layer 300 and the insulating layer 140, so that in the process of attaching the first optical adhesive layer 300 and the insulating layer 140, the attaching position between the first optical adhesive layer 300 and the insulating layer 140 can be monitored through the first hollow area 160 and the second hollow area 310, the first optical adhesive layer 300 and the periphery of the insulating layer 140 can be overlapped, and further, external air or water vapor can be prevented from invading the circuit structure of the electrode layer.
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 specific and detailed, but not to be understood 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 (8)
1. A touch display device, comprising:
the touch control module comprises an electrode layer and an insulating adhesive layer, the insulating adhesive layer is arranged around the electrode layer in a surrounding mode, and a first hollow area is formed in the insulating adhesive layer;
the display panel is arranged below the touch module; and
the first optical adhesive layer is arranged between the display panel and the touch module, the first optical adhesive layer and the insulating adhesive layer are partially overlapped to form an overlapping area, and the overlapping area is annularly arranged on the periphery of the electrode layer; a second hollowed-out area is formed in the first optical adhesive layer, the positions of the second hollowed-out area and the first hollowed-out area correspond to each other, the second hollowed-out area and the first hollowed-out area are both located in the overlapping area, and the first hollowed-out area and the second hollowed-out area are used for monitoring the bonding position between the first optical adhesive layer and the insulating adhesive layer when the first optical adhesive layer is bonded;
the first hollow-out area is of an annular structure and comprises a first boundary line and a second boundary line which are spaced from each other, and the second boundary line is positioned outside the first boundary line; the second hollow-out area is of a hollow structure and is provided with a third boundary line, and the third boundary line is positioned between the first boundary line and the second boundary line;
the minimum distance X3 between the second boundary line and the first boundary line is greater than 2D; and when the central position of the first hollow-out area corresponds to the central position of the second hollow-out area, the minimum distance between the second boundary line and the third boundary line is greater than or equal to 0.65 mm.
2. The touch display device according to claim 1, wherein the electrode layer comprises a touch sensing area and a lead area, the lead area is located at a periphery of the touch sensing area, the insulating adhesive is disposed in the lead area of the electrode layer, the lead area comprises a routing area and a blank area, the routing area is provided with a signal line, and a position of the first hollow area on the insulating adhesive layer corresponds to the blank area.
3. The touch display device according to claim 2, wherein a minimum distance between the second border line and the signal line is greater than or equal to 0.3 mm.
4. The touch display device according to claim 1, wherein the third boundary line and the first boundary line are parallel to each other; the third boundary line surrounds the first boundary line, or the first boundary line is square or rectangular, the third boundary line comprises three edges which are connected in sequence, and the three edges are arranged outside the first boundary line; or, the first boundary line is square or rectangular, the third boundary line includes two sides connected to each other, and the two sides are disposed outside the first boundary line.
5. The touch display device of claim 4, wherein the minimum width dimension of the overlap area is D; when the third boundary line surrounds the first boundary line, the sum of the minimum distances between the third boundary line and the first boundary line at two opposite ends is equal to 2D; when the first boundary line is square or rectangular, and the third boundary line comprises three edges which are connected in sequence, the sum of the minimum distances between two opposite edges and the first boundary line is equal to 2D, and the minimum distance between the other edge and the first boundary line is greater than zero and smaller than 2D; when the first boundary line is square or rectangular and the third boundary line comprises two sides connected to each other, the minimum distance between each side and the first boundary line is greater than zero and less than 2D.
6. The touch display device according to claim 1, wherein the number of the first hollow-out areas and the number of the second hollow-out areas are more than two, and different first hollow-out areas are arranged at intervals.
7. The touch display device of claim 1, wherein a third hollow area is further disposed on the insulating layer, the third hollow area is far away from the first optical adhesive layer, and the third hollow area is used to assist in monitoring a bonding position between the first optical adhesive layer and the insulating adhesive layer.
8. The touch display device of claim 1, wherein the touch module further comprises a cover plate and a second optical adhesive layer, and the second optical adhesive layer is located between the cover plate and a side of the electrode layer away from the first optical adhesive layer.
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| CN112416163B (en) * | 2020-10-26 | 2024-01-26 | 京东方科技集团股份有限公司 | Display panel, touch substrate and preparation method of touch substrate |
| CN112799540B (en) * | 2021-02-02 | 2022-05-13 | 业成科技（成都）有限公司 | Touch sensing module, touch display device and manufacturing method thereof |
| CN113407062B (en) * | 2021-07-14 | 2022-10-25 | 业成科技（成都）有限公司 | Display panel and terminal device |
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