CN210924541U - Touch substrate and display device - Google Patents
Touch substrate and display device Download PDFInfo
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- CN210924541U CN210924541U CN202020217438.6U CN202020217438U CN210924541U CN 210924541 U CN210924541 U CN 210924541U CN 202020217438 U CN202020217438 U CN 202020217438U CN 210924541 U CN210924541 U CN 210924541U
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Abstract
The utility model discloses a touch-control base plate and display device. The touch substrate is provided with a first surface, a second surface and a side surface, wherein the first surface and the second surface are arranged oppositely, and the side surface is connected with the first surface and the second surface; the touch substrate comprises at least one inorganic layer; the side surface is provided with an opening, a channel extending from the inside of the touch substrate to the side surface is arranged between the first surface and the second surface, and the channel is communicated with the opening so that ammonia gas generated by the inorganic layer is led out from the opening along the channel. The utility model discloses a touch-control base plate, the ammonia that inorganic layer produced can be derived along the opening of passageway edgewise in touch-control base plate, can avoid the ammonia to follow the transmission of touch-control base plate thickness direction and set up and produce the bubble between other layer structures on touch-control base plate thickness direction and touch-control base plate, avoids leading to the problem that these layer structures and touch-control base plate peeled off owing to have the bubble between other layer structures and the touch-control base plate.
Description
Technical Field
The utility model belongs to the technical field of show, especially, relate to a touch-control base plate and display device.
Background
The touch display device comprises a display panel, a touch layer and a polarizer which are sequentially stacked, wherein the touch layer usually comprises an inorganic layer, and the inorganic layer is prepared from silicon nitride or silicon oxynitride. Under the high-temperature and high-humidity condition, ammonia gas is easily generated in the touch layer, and bubbles are generated between the touch layer and the polarizer, so that abnormal display is caused.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a touch-control base plate and display device aims at avoiding the ammonia that the touch-control layer produced to produce the influence to other structures.
In a first aspect, the present invention provides a touch substrate having a first surface, a second surface and a side surface connecting the first surface and the second surface, wherein the first surface and the second surface are arranged oppositely; the touch substrate comprises at least one inorganic layer; the side surface is provided with an opening, a channel extending from the inside of the touch substrate to the side surface is arranged between the first surface and the second surface, and the channel is communicated with the opening so that ammonia gas generated by the inorganic layer is led out from the opening along the channel.
According to the utility model discloses an aspect, the touch-control base plate includes inorganic layer, metal level and the organic layer of range upon range of setting, and the organic layer sets up in one side that the metal level deviates from inorganic layer, and the passageway sets up in at least one in inorganic layer, metal level and the organic layer.
According to the utility model discloses an aspect, the touch-control base plate includes inorganic layer of multilayer and multilayer metal level, and inorganic layer and metal level set up in turn in proper order, and organic layer sets up in the one side that deviates from inorganic layer of the metal level in the outside.
According to an aspect of the present invention, the channel is disposed in the organic layer.
According to an aspect of the present invention, the channels are arranged in parallel at intervals and arranged in a direction parallel to the touch substrate, and communicate with the opening at a side surface connecting the first surface and the second surface; or at least some of the channels are in cross-communication with each other, the cross-communication channels communicating laterally with the openings.
According to an aspect of the present invention, the dimension of the channel in the extending direction of the channel and the dimension of the opening are both greater than or equal to 1 nm.
According to an aspect of the utility model, the touch-control base plate still includes at least one deck adsorbed layer, and the adsorbed layer is used for absorbing the ammonia or the derivative of ammonia that inorganic layer produced, and at least one deck adsorbed layer sets up in the one side that inorganic layer is close to organic layer.
According to one aspect of the present invention, the adsorption layer is disposed between the inorganic layer and the metal layer; and/or the adsorption layer is arranged between the metal layer and the organic layer.
In a second aspect, the present invention provides a display device, including: a display panel; the touch substrate of any of the above embodiments is stacked on the light emitting side of the display panel.
According to the utility model discloses an aspect, display device still includes the polarisation layer, and the polarisation layer sets up in one side that the touch-control base plate deviates from display panel.
The embodiment of the utility model provides an in, be provided with the passageway that extends to the side from the inside of touch-control base plate between the first surface of touch-control base plate and second surface, and the opening intercommunication of passageway and touch-control base plate side, then the ammonia that the inorganic layer of touch-control base plate produced can be derived along the opening of passageway edgewise in the touch-control base plate, can improve among the prior art ammonia along the transmission of touch-control base plate thickness direction and set up the problem that produces the bubble between other layer structure and the touch-control base plate on touch-control base plate thickness direction, and then can reduce and lead to the risk that these layer structure and touch-control base plate peeled off owing to have the bubble between other layer structure and the touch.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a touch substrate according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is another sectional view A-A of FIG. 1;
fig. 4 is a cross-sectional view of an organic layer according to an embodiment of the present invention;
fig. 5 is a cross-sectional view of an organic layer according to another embodiment of the present invention;
fig. 6 is a schematic diagram of an arrangement of the passages according to an embodiment of the present invention;
fig. 7 is a schematic view of the arrangement of the passages according to another embodiment of the present invention;
FIG. 8 is a further sectional view A-A of FIG. 1;
fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a display device according to another embodiment of the present invention.
In the figure:
100-a touch substrate; 10-an inorganic layer; 11-a first inorganic layer; 12-a second inorganic layer; 20-a metal layer; 21-a first metal layer; 22-a second metal layer; 30-an organic layer; 40-an adsorption layer; 50-a polarizing layer; 200-a display panel; 300-a display device; s1 — first surface; s2 — a second surface; s3-flank; a P-channel; h-opening.
Detailed Description
The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The touch substrate and the display device according to the embodiments of the present invention are described in detail with reference to fig. 1 to 10.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a touch substrate according to an embodiment of the present invention; fig. 2 is a sectional view a-a of fig. 1. The touch substrate 100 of the embodiment has a first surface S1, a second surface S2 and a side surface S3 connecting the first surface S1 and the second surface S2, which are oppositely disposed.
The touch substrate 100 includes at least one inorganic layer 10, the inorganic layer 10 of the embodiment is an inorganic layer containing nitrogen, the inorganic layer 10 is prone to generate ammonia gas or ammonia derivatives under high temperature and high humidity conditions, and the ammonia derivatives include ammonium (NH) radicals4 +) The substance (2) or the derivative of ammonia may decompose ammonia gas under certain conditions. For example, the inorganic layer 10 may include at least one of a silicon nitride layer or a silicon oxynitride layer.
An opening H is provided in the side surface S3 of the touch substrate 100, a channel P extending from the inside of the touch substrate 100 to the side surface S3 of the touch substrate is provided between the first surface S1 and the second surface S2 of the touch substrate 100, and the channel P communicates with the opening H in the side surface S3 of the touch substrate 100 so that ammonia gas generated in the inorganic layer 10 is led out from the opening H in the side surface S3 of the touch substrate 100 along the channel P.
In the touch substrate 100 of the embodiment, the channel P extending from the inside of the touch substrate 100 to the side surface S3 is disposed between the first surface S1 and the second surface S2 of the touch substrate 100, and the channel P is communicated with the opening H of the side surface S3 of the touch substrate 100, so that ammonia gas generated by the inorganic layer 10 of the touch substrate 100 can be led out from the opening H of the side surface S3 along the channel P in the touch substrate 100, which can improve the problem that the ammonia gas is transmitted along the thickness direction of the touch substrate 100 to generate bubbles between other layer structures disposed in the thickness direction of the touch substrate 100 and the touch substrate 100 in the prior art, and further reduce the risk of peeling of the layer structures from the touch substrate 100 due to the bubbles between the other layer structures and the touch substrate 100.
In some embodiments, the touch substrate 100 may include an inorganic layer 10, a metal layer 20, and an organic layer 30, which are stacked, wherein the organic layer 30 is disposed on a side of the metal layer 20 facing away from the inorganic layer 10. The channel P may be disposed in at least one of the inorganic layer 10, the metal layer 20, and the organic layer 30. The metal layer 20 may be used to form a touch electrode, and the inorganic layer 10 and the organic layer 30 may perform an insulating function and may also protect the touch electrode.
In some embodiments, the touch substrate 100 may include a plurality of inorganic layers 10 and a plurality of metal layers 20, the inorganic layers 10 and the metal layers 20 are alternately disposed in sequence, and one outermost metal layer 20 of the touch substrate 100 is disposed on a side away from the inorganic layer 30 and provided with the organic layer 30. In this embodiment, the inorganic layer 10 is made of an insulating material so as to insulate the adjacent metal layer 20.
In one embodiment, referring to FIG. 3, FIG. 3 is another cross-sectional view A-A of FIG. 1. The touch substrate 100 includes two inorganic layers 10, where the two inorganic layers 10 are a first inorganic layer 11 and a second inorganic layer 12, respectively. The touch substrate 100 further includes two metal layers 20, where the two metal layers 20 are a first metal layer 21 and a second metal layer 22, respectively, where the first metal layer 21 includes first touch electrodes arranged in an array, and the second metal layer 22 includes second touch electrodes arranged in an array. The first inorganic layer 11, the first metal layer 21, the second inorganic layer 12, the second metal layer 22, and the organic layer 30 are sequentially stacked, and each first touch electrode and each second touch electrode are insulated by the second inorganic layer 12, so as to implement a touch function of the touch substrate 100. The type of the touch substrate 100 is not limited in this embodiment, for example, the capacitive touch substrate may be a self-capacitive touch substrate or a mutual-capacitive touch substrate.
In some embodiments, channels may be disposed in the organic layer 30. Generally, the display device 300 includes a touch substrate 100 and a display panel 200, and the organic layer 30 is disposed far away from the display panel 200 relative to the inorganic layer 10 along a light emitting direction of the display panel 200, that is, the organic layer 20 is disposed above the inorganic layer 10 along the light emitting direction of the display panel 200. The ammonia gas generated in the inorganic layer 10 diffuses toward the organic layer 30, and the provision of the channel P in the organic layer 30 and the opening H in the side surface of the organic layer 30 are more advantageous for the discharge of ammonia gas. In other embodiments, the channels P may also be disposed in the inorganic layer 10 and/or the metal layer 20, so that at least part of the ammonia gas may also be led out from the side of the inorganic layer 10 and/or the metal layer 20, further increasing the efficiency of the ammonia gas leading out. In some embodiments, the metal layer may include touch electrodes disposed at intervals, and when the channels are disposed in the metal layer, the intervals between adjacent touch electrodes included in the metal layer may be reused as the channels P, and the openings H are disposed at the ends of the adjacent touch electrodes.
In some embodiments, the channel P may be completely embedded in the touch substrate 100, and the channel P is disposed in the organic layer 30 for an example, please refer to fig. 4, where fig. 4 is a cross-sectional view of the organic layer according to an embodiment of the present invention. The channel P is located inside the organic layer 30, and is only communicated with the opening H formed in the side surface S3 of the touch substrate 100 at the port of the channel P, so that the ammonia gas generated by the inorganic layer 10 can be ensured to flow from the inside of the touch substrate 100 to the opening H along the channel P, and be led out of the touch substrate 100. The channel P embedded in the touch substrate 100 of the embodiment may be filled with some sacrificial layers easy to remove after a certain layer forms the channel P, and then other layer structures are formed on the layer and the sacrificial layers, after the touch substrate 100 is formed, the sacrificial layers are removed through processes such as high temperature or illumination, so as to form the channel P on the touch substrate 100, of course, the channel P may also be formed through other methods, and the present invention is not limited to the specific forming method. In other embodiments, the channel P may also be at least partially exposed on the first surface S1 and/or the second surface S2, for example, the channel P is disposed on the organic layer 30, please refer to fig. 5, in which fig. 5 is a cross-sectional view of an organic layer according to another embodiment of the present invention. The side of the organic layer 30 facing away from the inorganic layer 10 is provided with a channel P, and the channel P is formed by recessing the first surface S2 of the organic layer 30 to the second surface S2, that is, the side of the channel P facing away from the inorganic layer 10 is communicated with the outside. The port of the channel P along the extending direction thereof communicates with the opening H of the side surface S3 of the touch substrate 100, and such a channel P can be formed on the surface of the organic layer 30 by an etching process after the organic layer 30 is formed, so that the preparation is easy and the preparation process can be simplified.
In some embodiments, please refer to fig. 6, fig. 6 is a schematic diagram illustrating an arrangement of channels according to an embodiment of the present invention, wherein the channels P can be arranged in parallel and spaced along the same direction, and arranged along a direction parallel to the touch substrate 100, and are communicated with the opening H at the side S3 connecting the first surface S1 and the second surface S2, that is, arranged to penetrate through the organic layer 30. In this embodiment, the channels P are regularly arranged, so that the manufacturing process can be simplified and the manufacturing efficiency can be improved.
In other embodiments, please refer to fig. 7, fig. 7 is a schematic diagram illustrating an arrangement of channels according to another embodiment of the present invention, the channels P may be irregularly arranged, at least some of the channels P may be mutually cross-connected, and the cross-connected channels P are connected to the opening H at the side S3 of the touch substrate 100. In this embodiment, at least some channels P are arranged in a cross manner, so that the number of channels P of the touch substrate 100 can be increased, and the ammonia gas can be transmitted to the near opening H along the near channel P to be led out, thereby improving the efficiency of leading out the ammonia gas.
In the above embodiments, the shape of the cross section of the passage P perpendicular to the extending direction thereof is not limited, and may be, for example, a circle, a rectangle, an ellipse, or an irregular shape. The dimension of the channel P along the extending direction of the channel P and the dimension of the opening are both greater than or equal to 1nm, so as to ensure that ammonia gas can be transmitted to the side opening H of the touch substrate 100 along the channel P to be led out. In the present embodiment, the dimension of the passage P in the self-extending direction refers to the smallest width of a cross section of the passage P perpendicular to the self-extending direction.
In some embodiments, referring to FIG. 8, FIG. 8 is a further cross-sectional view A-A of FIG. 1. The touch substrate 100 further includes at least one adsorption layer 40, and the adsorption layer 40 is used for adsorbing ammonia gas or ammonia derivatives generated by the inorganic layer 10. At least one adsorption layer 40 is disposed on the inorganic layer 10 on a side thereof adjacent to the organic layer 30. In the display device 300, along the light emitting direction of the display panel 200, the organic layer 30 is located above the inorganic layer 10, ammonia diffuses toward the organic layer 30 along the inorganic layer 10, and the adsorption layer 40 is disposed on one side of the inorganic layer 10 close to the organic layer 30, so that the adsorption layer 40 can effectively absorb ammonia or ammonia derivatives, and can also avoid the problem that when other layer structures are disposed above the organic layer 30, bubbles are generated between the organic layer 30 and the other layer structures, and the other layer structures are peeled off from the organic layer 30.
In some embodiments, the touch substrate 100 includes an inorganic layer 10, a metal layer 20, and an organic layer 30, and the adsorption layer 40 may be disposed between the inorganic layer 10 and the metal layer 20 to absorb ammonia gas or ammonia derivatives when the inorganic layer 10 releases the ammonia gas or the ammonia derivatives. In other alternative embodiments, the adsorption layer 40 may be further disposed between the metal layer 20 and the organic layer 30 to absorb the ammonia gas or the ammonia derivative before the ammonia gas or the ammonia derivative is transmitted to the outermost layer of the touch substrate 100. It is understood that, in some embodiments, the adsorption layer 40 may also be disposed between the inorganic layer 10 and the metal layer 20, and between the metal layer 20 and the organic layer 30, and the multiple adsorption layers 40 are disposed to facilitate effective absorption of ammonia gas or ammonia derivatives, thereby improving absorption efficiency.
In this embodiment, the adsorption layer 40 may be made of a porous material containing oxygen groups, the porous structure may enable the adsorption layer 40 to absorb ammonia gas, and the oxygen atoms in the oxygen groups are generally electronegative and may react with hydrogen atoms in the derivatives of ammonia to form hydrogen bonds to absorb the derivatives of ammonia.
The present invention further provides a display device, please refer to fig. 9, fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present invention. The display device 300 includes the display panel 200 and the touch substrate 100 of any of the embodiments described above. The touch substrate 100 is disposed on the light emitting side of the display panel 200 to realize the touch performance of the display device 300. The display panel 200 may be a liquid crystal display panel, or may be other types of display panels such as an Organic Light-Emitting Diode (OLED), a Micro-LED (Micro-LED), and a quantum dot.
In this embodiment, a channel P extending from the inside of the touch substrate 100 to the side surface S3 is disposed between the first surface S1 and the second surface S2 of the touch substrate 100, and the channel P is communicated with the opening H of the side surface S3 of the touch substrate 100, so that ammonia gas generated by the inorganic layer 10 of the touch substrate 100 can be led out from the opening H of the side surface along the channel P in the touch substrate 100, which can improve the problem that the ammonia gas is transmitted along the thickness direction of the touch substrate 100 to generate bubbles between other layer structures disposed in the thickness direction of the touch substrate 100 and the touch substrate 100 in the prior art, and further reduce the risk of peeling of the layer structures from the touch substrate 100 due to the bubbles between the other layer structures and the touch substrate 100.
Because the display device 300 of the embodiment of the present invention includes the touch substrate 100 of any one of the above embodiments, the beneficial effects of the touch substrate 100 of the above embodiments are still achieved, and the description is omitted here.
In some embodiments, the display device 300 further includes a polarizing layer 50, and the polarizing layer 50 is disposed on a side of the touch substrate 100 facing away from the display panel 200. The polarizing layer 50 can prevent external light incident to the display panel from being reflected, thereby improving the display effect of the display device 300. The polarizing layer 50 may be attached to a side of the touch substrate 100 away from the display panel 200 by a transparent optical adhesive, for example. Since ammonia gas generated in the inorganic layer 10 of the touch substrate 100 can be led out from the opening H of the side surface S3 along the channel P in the touch substrate 100, it can be avoided that ammonia gas is transmitted between the touch substrate 100 and the polarizing layer 50 to cause bubbles between the touch substrate 100 and the polarizing layer 50, thereby affecting the polarizing effect of the polarizing layer 50 or the problem of peeling off the polarizing layer from the touch substrate.
In an embodiment, please refer to fig. 10, fig. 10 is a schematic structural diagram of a display device according to another embodiment of the present invention. The touch substrate 100 includes a first inorganic layer 11, a first metal layer 21, a second inorganic layer 12, a second metal layer 22, an adsorption layer 40, and an organic layer 30, which are sequentially stacked. The display panel 200 includes an encapsulation layer, and the first inorganic layer 11 of the touch substrate 100 is disposed on the encapsulation layer. The polarizer 50 is disposed on a side of the organic layer 30 facing away from the second metal layer 22. In the display device 300 of the embodiment, the touch substrate 100 is disposed on the display panel 200 to achieve the touch performance of the display device 300, and at least a portion of ammonia gas or ammonia derivatives generated by the inorganic layer 10 of the touch substrate 100 can be absorbed by the absorption layer 40, and a portion of ammonia gas can be led out from the opening H of the side surface S3 through the channel P of the touch substrate 100, so as to avoid the ammonia gas being transmitted between the touch substrate 100 and the polarizing layer 50 to cause bubbles to be generated between the touch substrate 100 and the polarizing layer 50, thereby affecting the polarization effect of the polarizing layer 50 or the peeling problem of the polarizing layer 50 and the touch substrate 100.
In accordance with the embodiments of the present invention as set forth above, these embodiments do not set forth all of the details nor limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The present invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A touch substrate is characterized by comprising a first surface, a second surface and a side surface, wherein the first surface and the second surface are arranged oppositely, and the side surface is connected with the first surface and the second surface;
the touch substrate comprises at least one inorganic layer;
the side face is provided with an opening, a channel extending from the inside of the touch substrate to the side face is arranged between the first surface and the second surface, and the channel is communicated with the opening, so that ammonia gas generated by the inorganic layer is led out from the opening along the channel.
2. The touch substrate of claim 1, wherein the touch substrate comprises an inorganic layer, a metal layer, and an organic layer stacked on the metal layer, the organic layer is disposed on a side of the metal layer facing away from the inorganic layer, and the channel is disposed on at least one of the inorganic layer, the metal layer, and the organic layer.
3. The touch substrate of claim 2, wherein the touch substrate comprises a plurality of inorganic layers and a plurality of metal layers, the inorganic layers and the metal layers are alternately arranged in sequence, and the organic layer is arranged on the side of the outermost metal layer away from the inorganic layer.
4. The touch substrate of claim 2, wherein the channel is disposed in the organic layer.
5. The touch substrate of claim 4, wherein the channels are spaced apart and parallel to the touch substrate and communicate with the opening at the side connecting the first surface and the second surface; or
At least some of the channels are in cross-communication with each other, the cross-communication channels communicating with the opening at the side.
6. The touch substrate of claim 1, wherein the channel has a dimension along the extending direction of the channel and an opening dimension greater than or equal to 1 nm.
7. The touch substrate of claim 4, further comprising at least one adsorption layer for absorbing ammonia gas or ammonia derivatives generated by the inorganic layer, wherein the at least one adsorption layer is disposed on a side of the inorganic layer close to the organic layer.
8. The touch substrate of claim 7, wherein the absorption layer is disposed between the inorganic layer and the metal layer; and/or the presence of a gas in the gas,
the adsorption layer is arranged between the metal layer and the organic layer.
9. A display device, comprising:
a display panel;
the touch substrate of any one of claims 1 to 8, stacked on a light exit side of the display panel.
10. The display device according to claim 9, further comprising a polarizing layer disposed on a side of the touch substrate facing away from the display panel.
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| CN202020217438.6U CN210924541U (en) | 2020-02-26 | 2020-02-26 | Touch substrate and display device |
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| CN202020217438.6U CN210924541U (en) | 2020-02-26 | 2020-02-26 | Touch substrate and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112002233A (en) * | 2020-08-28 | 2020-11-27 | 合肥维信诺科技有限公司 | Folding display terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112002233A (en) * | 2020-08-28 | 2020-11-27 | 合肥维信诺科技有限公司 | Folding display terminal |
| CN112002233B (en) * | 2020-08-28 | 2022-04-01 | 合肥维信诺科技有限公司 | Folding display terminal |
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