CN109002212B - Touch screen structure, touch display device and manufacturing method thereof - Google Patents
Touch screen structure, touch display device and manufacturing method thereof Download PDFInfo
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- CN109002212B CN109002212B CN201810785722.0A CN201810785722A CN109002212B CN 109002212 B CN109002212 B CN 109002212B CN 201810785722 A CN201810785722 A CN 201810785722A CN 109002212 B CN109002212 B CN 109002212B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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Abstract
The invention discloses a touch screen, a touch display device and a manufacturing method thereof, wherein the touch screen structure comprises a substrate, wherein at least one side surface of the substrate, which is close to a display panel, is provided with a plurality of holes; and the electrode layer is positioned on one side surface of the substrate, which is far away from the display panel, and the electrode layer realizes the touch control function. The touch display device comprises a display panel, a touch screen structure and an optical adhesive layer positioned between the display panel and the touch screen structure; the optical adhesive layer is at least arranged on one side face, opposite to the display panel, of the touch screen structure and is filled in the hole, and the touch screen structure is bonded with the display panel. Therefore, the holes are formed in the substrate of the touch screen structure and filled with the optical adhesive layer, so that the optical adhesive layer and the touch screen structure are combined, the bending performance is improved, and the film layer separation phenomenon is avoided.
Description
Technical Field
The invention relates to the field of flat panel display, in particular to a touch screen structure, a touch display device and a manufacturing method of the touch display device.
Background
The touch display device has the advantages of being powerful, for example, the touch display device is more sensitive to operation, does not need input equipment such as a keyboard and the like, and is small in size. With the development of the flexible display technology, the flexible display technology is combined into the touch display device, so that the touch display device further has the advantages of convenience in carrying, flexibility, random deformation and the like.
At present, the flexible display technology is mature, and the touch display device combined with the flexible display technology gradually enters people's lives, for example, flexible and touch mobile devices are also gradually becoming main tools of daily life, and the industry predicts that the flexible and touch mobile devices will gradually replace traditional mobile devices (mobile phones, tablets and the like) in the near future. However, the inventor finds that the existing touch display device has some problems.
Disclosure of Invention
The invention aims to provide a touch screen structure, a touch display device and a manufacturing method thereof, which can improve the bending performance.
In order to solve the above technical problem, the present invention provides a touch screen structure, including:
the display panel comprises a substrate, wherein at least one side surface of the substrate close to the display panel is provided with a plurality of holes; and
and the electrode layer is positioned on one side surface of the substrate far away from the display panel and realizes a touch control function.
Optionally, for the touch screen structure, the plurality of holes are through holes and/or blind holes.
Optionally, for the touch screen structure, when the plurality of holes are through holes, the plurality of holes penetrate from one side of the substrate close to the display panel to one side far away from the display panel.
Optionally, for the touch screen structure, when the plurality of holes are blind holes, the blind holes are disposed on a side of the substrate close to the display panel, or the blind holes are disposed on a side of the substrate close to the display panel and a side of the substrate far from the display panel.
Optionally, for the touch screen structure, the plurality of holes are uniformly distributed in the touch screen structure, the aperture of each hole is 0.01mm to 5mm, and the distance between adjacent holes is 0.01mm to 5mm.
Optionally, for the touch screen structure, the apertures of the plurality of holes from the end far away from the electrode layer are larger than the apertures of the plurality of holes from the end near the electrode layer.
The invention also provides a touch display device, which comprises a display panel, a touch screen structure and an optical adhesive layer positioned between the display panel and the touch screen structure; the touch screen structure is as above, the optical adhesive layer at least set up in the touch screen structure with on the relative side of display panel, the touch screen structure passes through the optical adhesive layer with display panel bonds to fill a plurality of holes.
The invention also provides a manufacturing method of the touch display device, which comprises the following steps:
providing a substrate;
forming a plurality of holes on at least one side of the substrate close to the display panel;
forming an electrode layer for realizing a touch function on one side surface of the substrate away from the display panel, wherein the substrate and the electrode layer form a touch screen structure; and
and coating an optical adhesive layer on at least one side surface of the touch screen structure opposite to the display panel to realize the bonding of the touch screen structure and the display panel, wherein the optical adhesive layer fills the hole.
Optionally, for the manufacturing method of the touch display device, the substrate is a polyimide substrate, the polyimide substrate is coated on a substrate, the holes are formed in the polyimide substrate through a mask, and after an electrode layer is formed on one side of the substrate away from the display panel, the substrate is removed to form the touch screen structure.
Optionally, as for the manufacturing method of the touch display device, coating an optical adhesive layer on at least one side surface of the touch screen structure opposite to the display panel specifically includes: and coating an optical adhesive layer on one side of the substrate close to the display panel and/or one side of the display panel close to the substrate to realize bonding.
The invention provides a touch screen structure, a touch display device and a manufacturing method thereof, wherein the touch screen structure comprises a substrate, wherein at least one side surface of the substrate close to a display panel is provided with a plurality of holes; and the electrode layer is positioned on one side surface of the substrate, which is far away from the display panel, and the electrode layer realizes the touch control function. The touch display device comprises a display panel, a touch screen structure and an optical adhesive layer positioned between the display panel and the touch screen structure; the touch screen structure is as above, the optical adhesive layer is at least arranged on one side face of the touch screen structure opposite to the display panel, so that the touch screen structure is bonded with the display panel and the holes are filled. Therefore, the holes are formed in the substrate of the touch screen structure, and the optical adhesive layer fills the holes, so that the optical adhesive layer and the touch screen structure are compounded, the bending performance is effectively improved, and the film layer separation phenomenon is avoided; in addition, the optical adhesive layer can be filled into the holes, so that the adhesive force between the optical adhesive layer and the substrate is improved, the thickness of the optical adhesive layer on the side face of the touch screen structure can be reduced, and the thickness of the whole touch display device is reduced;
furthermore, the holes comprise through holes, so that the compounding degree is improved better, and the separation of the film layers is avoided.
Drawings
FIG. 1 is a schematic diagram of a touch display device;
FIG. 2 is a schematic cross-sectional view illustrating a touch screen structure according to an embodiment of the invention;
fig. 3 is a schematic flow chart illustrating a manufacturing method of a touch display device according to an embodiment of the invention;
FIG. 4 is a schematic cross-sectional view of a substrate according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a substrate with an aperture in accordance with an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a hole formed using a PI substrate in accordance with one embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of an embodiment of the present invention using a PET substrate;
FIG. 8a is a schematic top view illustrating the formation of an electrode layer according to an embodiment of the present invention;
FIG. 8b isbase:Sub>A schematic cross-sectional view taken along line A-A' of FIG. 8base:Sub>A;
FIG. 9 is a cross-sectional view of a touch screen structure formed in accordance with an embodiment of the present invention;
fig. 10 is a schematic cross-sectional view of a touch display device according to an embodiment of the invention;
FIG. 11 is a schematic cross-sectional view illustrating the formation of an electrode layer according to another embodiment of the present invention;
FIG. 12 is a cross-sectional view of a touch screen structure formed in accordance with another embodiment of the present invention;
fig. 13 is a schematic cross-sectional view of a touch display device formed in another embodiment of the invention;
FIG. 14 is a schematic view of a blind via formed in the substrate according to another embodiment of the present invention;
FIG. 15 is a schematic cross-sectional view illustrating the formation of an electrode layer according to yet another embodiment of the present invention;
FIG. 16 is a schematic cross-sectional view of a touch display device in accordance with another embodiment of the present invention;
FIG. 17 is a schematic view of a blind via formed in a substrate according to yet another embodiment of the present invention;
FIG. 18 is a schematic cross-sectional view illustrating the formation of an electrode layer according to still another embodiment of the present invention;
fig. 19 is a schematic cross-sectional view of a touch display device formed in yet another embodiment of the invention.
Detailed Description
The inventor finds that the touch display device has more film layers, and usually, the film layers are adhered by an optical adhesive layer. As shown in fig. 1, a touch display device includes a display panel 3, a Touch Panel (TP) 1 is disposed on the display panel, a cover plate 4 is disposed on the touch panel 1, and optical adhesive layers 2 are respectively coated on upper and lower sides of the touch panel 1, so as to connect the touch panel 1 to other components. However, such a design has many defects, for example, the thickness is relatively thick, the glue layer is easily separated when the design is bent, and the film layer is easily broken.
Based on the above findings, an embodiment of the present invention provides a touch panel, as shown in fig. 2, including:
a substrate 10, wherein a plurality of holes 11 are formed on at least one side of the substrate 10 close to the display panel 20 (refer to fig. 8); and
and the electrode layer 12 is positioned on one side surface of the substrate 10 far away from the display panel, and the electrode layer 12 realizes a touch control function.
In one embodiment, the plurality of holes 11 are through holes and/or blind holes. Shown as a through hole in fig. 2. The through holes and/or the blind holes are/is filled with the optical adhesive layer, so that the optical adhesive layer and the touch screen structure are compounded.
In one embodiment, when the plurality of holes 11 are through holes, the through holes penetrate from a side of the substrate 10 close to the display panel to a side far from the display panel.
In an embodiment, when the plurality of holes 11 are blind holes, the blind holes are disposed on a side of the substrate 10 close to the display panel, or the blind holes are disposed on a side of the substrate 10 close to the display panel and a side of the substrate far from the display panel.
The plurality of holes 11 may be uniformly arranged in the touch screen structure, for example, the hole diameter is uniform, the hole pitch is uniform, and the like. The holes have a diameter of 0.01mm to 5mm, for example, 0.05mm,0.2mm,0.5mm,1mm,2mm,3mm, etc., and the pitch between adjacent holes 11 is 0.01mm to 5mm, for example, 0.05mm,0.2mm,0.5mm,1mm,2mm,3mm, etc. The above design choice of the holes 11 may not affect the flexibility of the substrate 10, and avoid the occurrence of the situation that the substrate is easily damaged due to the over-large and over-dense through holes. In addition, the holes 11 with the above specifications can improve the bonding force with the optical adhesive layer, so that the composite degree of the optical adhesive layer and the touch screen structure is improved.
In addition, the plurality of holes 11 may also be non-uniform, for example, holes with different pore sizes are included, or the intervals between adjacent holes 11 are also different, and the combination of the optical adhesive layer and the touch screen structure may also be achieved.
In one embodiment, the aperture of the hole 11 from the end far away from the electrode layer 12 is larger than the aperture from the end near the electrode layer 12, so that the filling effect of the optical adhesive layer can be improved, and the degree of recombination between the optical adhesive layer and the touch screen structure can be improved.
Correspondingly, the embodiment of the invention also provides a touch display device, which comprises a display panel, a touch screen structure and an optical adhesive layer positioned between the display panel and the touch screen structure; the touch screen structure is as above, the optical adhesive layer is at least arranged on one side face of the touch screen structure opposite to the display panel, so that the touch screen structure is bonded with the display panel and the holes are filled.
Further, as shown in fig. 3 and combined with fig. 4-19, the method for manufacturing a touch display device of the present invention includes:
step S11, providing a substrate 10;
step S12, forming a plurality of holes 11 on at least one side surface of the substrate 10 close to the display panel 20;
step S13, forming an electrode layer 12 for implementing a touch function on a side of the substrate 10 away from the display panel 20, where the substrate 10 and the electrode layer 12 form a touch screen structure; and
step S14, coating an optical adhesive layer 30 on at least one side of the touch screen structure opposite to the display panel to bond the touch screen structure and the display panel 20, wherein the optical adhesive layer 30 fills the hole 11.
Therefore, the optical adhesive layer and the touch screen are compounded, the bending performance is effectively improved by filling the holes with the optical adhesive layer, and the film layer separation phenomenon is avoided; in addition, the optical adhesive layer can be filled into the holes, so that the adhesive force between the optical adhesive layer and the substrate is improved, the thickness of the optical adhesive layer on the side face of the touch screen structure can be reduced, and the thickness of the whole touch display device is reduced.
The touch screen structure, the touch display device and the method for manufacturing the same according to the present invention will be described in more detail with reference to the drawings, in which preferred embodiments of the present invention are shown, and it is understood that those skilled in the art can modify the present invention described herein while still achieving the advantageous effects of the present invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
In the description that follows, it will be understood that when a layer (or film), region, pattern, or structure is referred to as being "on" a substrate, layer (or film), region, and/or pattern, it can be directly on another layer or substrate, and/or intervening layers may also be present. In addition, it will be understood that when a layer is referred to as being "under" another layer, it can be directly under the other layer, and/or one or more intervening layers may also be present. In addition, references to "on" and "under" layers may be made based on the drawings.
Four embodiments will be described below.
Example one
Referring to fig. 4, for step S11, optionally, the substrate 10 may be a flexible material, and the material of the substrate 10 may be, but is not limited to, acryl, polymethyl methacrylate (PMMA), polyacrylonitrile-butadiene-styrene (ABS), polyamide (PA), polyimide (PI), polybenzimidazole Polybutylene (PB), polybutylene terephthalate (PBT), polycarbonate (PC), polyether ether ketone (PEEK), polyetherimide (PEI), polyether sulfone (PES), polyethylene (PE), polyethylene terephthalate (PET), polyethylene tetrafluoroethylene (ETFE), polyethylene oxide, polyglycolic acid (PGA), polymethylpentene (PMP), polyoxymethylene (POM), polyphenylene ether (PPE), polypropylene (PP), polystyrene (PS), polytetrafluoroethylene (PTFE), polyurethane (PU), polyvinyl chloride (PVC), polyvinyl fluoride (PVF), polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVDF), or styrene-acrylonitrile (SAN).
Referring to fig. 5, a plurality of holes 11 are formed on at least one side of the substrate 10 close to the display panel in step S12.
The side of the substrate 10 close to the display panel can be set by practical requirements.
The holes 11 include blind holes and/or through holes, and the holes 11 in the substrate 10 may all be blind holes, or may all be through holes, or may have both blind holes and through holes. The skilled person can flexibly choose according to the actual needs.
When the plurality of holes 11 are through holes, the through holes penetrate from a side of the substrate 10 close to the display panel to a side far away from the display panel.
When the plurality of holes 11 are blind holes, the blind holes are disposed on a side of the substrate 10 close to the display panel, or the blind holes are disposed on a side of the substrate 10 close to the display panel and a side of the substrate 10 far from the display panel.
The holes 11 may be provided in the substrate 10 itself, or may be formed by processing on the basis of the substrate 10.
The holes 11 may be uniformly arranged, and alternatively, the holes 11 may be a structure that is gradually wider from top to bottom, gradually narrower from top to bottom, or have uniform upper and lower hole diameters (i.e., after the electrode layer 12 is formed, the hole diameter of the hole 11 is larger, smaller, or constant from the far away from the electrode layer 12), such as a cylindrical hole, a conical hole, or the like, and the holes 11 may have other shapes, which are not listed here. The filling effect of the optical adhesive layer can be better improved due to the fact that the upper aperture and the lower aperture of the hole are not consistent, and therefore the compounding degree of the optical adhesive layer and the touch screen structure is improved.
The diameter of the holes 11 is 0.01mm to 5mm, for example, 0.05mm,0.2mm,0.5mm,1mm,2mm,3mm, etc., and the pitch between adjacent holes 11 is 0.01mm to 5mm, for example, 0.05mm,0.2mm,0.5mm,1mm,2mm,3mm, etc. The above design choice of the holes 11 may not affect the flexibility of the substrate, and avoid the situation that the substrate is easily damaged due to too large and too dense through holes.
Referring to fig. 6, in the first embodiment, the substrate 10 is a PI (polyimide) substrate, and specifically, a glass substrate 70 may be provided first, and after being cleaned, PI is coated thereon. After that, the holes 11 are formed on the PI substrate by means of a mask plate (not shown), thereby obtaining a substrate 10 having the holes 11. In which the embodiment shown in figure 6 specifically illustrates the case of vias.
Referring to fig. 7, in the first embodiment, a glass substrate may not be used, but the substrate 10 having the hole 11 may be directly used, for example, the substrate 10 may be one of a PET (polyethylene terephthalate) substrate, a COP (cyclic olefin polymer) substrate, and the like, and such a substrate 10 itself having the hole 11 may be directly used. Wherein the embodiment shown in fig. 7 specifically illustrates the case of through holes.
The following description will be made by taking a PI substrate as an example.
Next, referring to fig. 8a and 8b, in step S13, an electrode layer 12 for implementing a touch function is formed on a side of the substrate 10 away from the display panel, and the substrate 10 and the electrode layer 12 form a touch screen structure.
For example, the electrode layer 12 may be made of a metal oxide material, such as an ITO (indium tin oxide) material, and here, the preparation of the electrode layer 12 may be completed by a conventional method, such as by using the mask plate, that is, as shown in fig. 8a, the electrode layer 12 is in a grid structure, the grid in the electrode layer 12 forms the openings 13, and the openings 13 correspond to the holes 11.
One opening 13 may correspond to one hole 11, or one opening 13 may correspond to a plurality of holes 11, in this embodiment, one opening 13 corresponds to one hole 11, and the boundary of the opening 13 surrounds the boundary of the hole 11 at the end facing the electrode layer 12.
The electrode layer 12 can be selected differently according to actual requirements, such as a double layer, a triple layer, etc., and can be applied to the embodiment of the present invention. The material of the electrode layer 12 may also be a conductive metal oxide, such as ITO, molybdenum aluminum molybdenum, etc. Thereby, the touch screen of the present invention is obtained.
After the touch screen is formed, the glass substrate 70 may be removed, for example, by laser removal.
Then, referring to fig. 10, in step S14, an optical adhesive layer 30 is coated on at least one side of the touch screen structure opposite to the display panel to bond the touch screen structure and the display panel 20, and the optical adhesive layer 30 fills the hole 11.
In the first embodiment, an OCA (optical Clear Adhesive) glue is selected as the optical glue layer 30.
The display panel 20 may include OLED light emitting units, which can be implemented by using the prior art, and the display panel 20 may be selected from any feasible structure according to actual requirements.
For example, the optical adhesive layer 30 may realize adhesion between the touch screen structure and the polarizer of the display panel 20.
Bonding may take the form, for example, of applying the optical glue layer 30 to at least one side of the touch screen structure, and in particular at least the side of the touch screen structure adjacent to the display panel, it being understood that such application would result in the holes also being filled with the optical glue layer 30, and then opposing the display panel 20 to the touch screen with the optical glue layer to effect bonding of the touch screen structure and the display panel 20 and fill the holes. After curing, the optical adhesive layer 30 and the touch screen structure are combined into a whole, so that the bending performance is greatly improved.
Moreover, due to the existence of the hole 11, after the optical adhesive layer 30 is coated, the optical adhesive layer 30 enters the hole 11, so that the thickness of the optical adhesive layer 30 is reduced, and because the optical adhesive layer 30 is compounded with the touch screen structure, the reduction of the thickness of the optical adhesive layer 30 does not affect the adhesion force, namely, the reduction of the thickness of the optical adhesive layer is realized on the basis of ensuring the bending performance and avoiding the film layer separation phenomenon, so that the reduction of the thickness of the optical adhesive layer is facilitated, and the reduction of the thickness of the whole touch display device is facilitated.
Or, the touch screen structure may be placed on the display panel 20, and then an optical adhesive layer is coated on a side of the touch screen structure away from the display panel 20, and the optical adhesive layer 30 penetrates through the hole to a contact surface of the touch screen structure and the display panel 20, so as to bond the touch screen structure and the display panel 20, and the optical adhesive layer 30 fills the hole. After curing, the same effect can be achieved.
The optical glue layer 30 is not in contact with the electrode layer 12 to avoid unwanted conduction.
The optical adhesive layer 30 may fill the through hole, thereby further improving the bending performance.
The bonding is achieved by coating an optical adhesive layer on one side of the substrate 10 close to the display panel 20. In addition, an optical adhesive layer 30 may be coated on one side of the display panel 20 close to the substrate 10 to achieve adhesion, and after the optical adhesive layer is coated on the display panel 20, the optical adhesive layer may also be filled into the hole 11 close to one side of the display panel. In addition, an optical adhesive layer may be simultaneously coated on one side of the substrate 10 adjacent to the display panel 20 and one side of the display panel 20 adjacent to the substrate 10.
In the first embodiment, the thickness of the optical adhesive layer 30 on the side of the touch screen is 5 μm to 60 μm, such as 10 μm,20 μm,30 μm,40 μm,50 μm, and the like. Therefore, a good pasting effect can be achieved, the compounding degree of the optical adhesive layer and the touch screen is improved, and the whole thickness is not too thick or even reduced.
In addition, an insulating layer may be formed on the electrode layer 12, and an optical adhesive layer may be formed on the insulating layer, and a cover plate may be provided to cover the optical adhesive layer, which may be performed by using the prior art and will not be described herein.
Example two
The second embodiment is substantially the same as the first embodiment, except that the electrode layer 12 may be an electrode layer of a coating structure, and may or may not be perforated. The case of the openings may be similar to the case of the electrode layer of the mesh structure, and a repetitive description thereof will not be made herein. In the case of no hole, one end of the through hole is sealed by the electrode layer, and then the formed optical adhesive layer is filled from the other end of the through hole.
Referring to fig. 11, also taking a PI substrate as an example, the PI substrate is formed on a glass substrate 70, and a hole 11, such as a through hole, is formed on the substrate 10.
After that, an electrode layer 12 is formed on the substrate 10, the electrode layer 12 in this embodiment includes, for example, a structure that is located on the substrate 10 and partially fills the hole 11, and the portion located on the substrate 10 and the portion filled in the hole 11 may be connected as a whole.
The material of the electrode layer 12 can be selected as in the first embodiment, for example, a metal oxide material, and more specifically, an ITO material.
Since the electrode layer 12 may be partially filled in the hole 11, the bonding force between the electrode layer 12 and the substrate 10 may be improved, and the peeling between the electrode layer 12 and the substrate or the fracture of the electrode layer 12 may be prevented.
Referring to fig. 12, after the electrode layer 12 is formed, the glass substrate is removed. The touch screen structure of the present embodiment is thus obtained.
Then, an optical adhesive layer 30 is coated on at least one side of the touch screen structure opposite to the display panel 20 to bond the touch screen structure and the display panel 20, and the optical adhesive layer 30 fills the hole 11.
The optical glue layer 30 may be chosen in accordance with an embodiment.
For example, the optical adhesive layer 30 may be coated on the side of the display panel 20 facing the touch screen structure, or coated on the side of the touch screen structure facing the display panel 20 (i.e., the side of the substrate 10 opposite to the electrode layer 12), or coated on both the display panel 20 and the touch screen structure.
Therefore, the optical adhesive layer 30 is also partially filled in the hole 11, so that the optical adhesive layer and the touch screen can be compounded, and the effect similar to or the same as that of the first embodiment can be achieved.
In the present embodiment, the optical adhesive layer 30 does not contact the electrode layer 12 in the hole 11.
EXAMPLE III
The third embodiment is substantially the same as the first embodiment, except that the holes 11 in the third embodiment are blind holes.
As shown in fig. 14, the holes 11 are formed in the substrate 10, and the depth of the holes 11 is not limited herein and may be flexibly adjusted according to factors such as the thickness of the actual substrate 10.
The substrate 10 in the third embodiment may also be a PI substrate, for example, and the glass substrate in fig. 14 has been removed, specifically, removed after the holes 11 are formed.
Then, referring to fig. 15, an electrode layer 12 is formed on the substrate 10 without the hole 10. In this embodiment, the electrode layer 12 may be any one of the electrode layers in the first embodiment and the second embodiment, and as shown in fig. 15, is an electrode layer in the second embodiment.
Thereby, the touch screen structure in the present embodiment is formed.
Then, referring to fig. 16, an optical adhesive layer 30 is coated on at least one side of the touch screen structure opposite to the display panel 20 to bond the touch screen structure and the display panel 20, and the optical adhesive layer 30 fills the hole 11.
The optical glue layer 30 may be selected in accordance with an embodiment.
For example, the optical adhesive layer 30 may be coated on the side of the display panel 20 facing the touch screen structure, or coated on the side of the touch screen structure facing the display panel 20 (i.e., the side of the substrate 10 opposite to the electrode layer 12), or coated on both the display panel 20 and the touch screen structure.
Therefore, the optical adhesive layer 30 is also partially filled in the hole 11, so that the optical adhesive layer and the touch screen can be combined, and the effect similar to or the same as that of the first embodiment is achieved.
Example four
The fourth embodiment is substantially identical to the third embodiment except that blind holes are formed on opposite sides of the substrate 10.
Referring to fig. 17, a hole 11 is formed in a substrate 10, and the depth of the hole 11 is not limited herein and may be flexibly adjusted according to factors such as the thickness of the actual substrate 10.
The substrate 10 in the fourth embodiment may also be a PI substrate, for example, and the glass substrate in fig. 14 has been removed, specifically, a hole 11 may be formed on one side of the substrate 10, and then the glass substrate may be removed, and then a hole 11 may be formed on the other side of the substrate 10.
The holes 11 on opposite sides of the substrate 10 may or may not correspond to each other, for example, they may be distributed in a staggered manner. Fig. 17 shows a one-to-one correspondence, so that the same mask plate can be used, saving cost.
Then, referring to fig. 18, an electrode layer 12 is formed on one side of the substrate 10. In this embodiment, the electrode layer 12 may be any one of the electrode layers in the first embodiment and the second embodiment, and as shown in fig. 18, is an electrode layer in the second embodiment.
Thereby, the touch screen structure in the present embodiment is formed.
As in the embodiment, the electrode layer 12 may be filled in the hole 11, thereby improving the bonding force of the electrode layer 12 to the substrate 10.
Then, referring to fig. 19, an optical adhesive layer 30 is coated on at least one side of the touch screen structure opposite to the display panel 20 to bond the touch screen structure and the display panel 20, and the optical adhesive layer 30 fills the hole 11.
The optical glue layer 30 may be selected in accordance with an embodiment.
For example, the optical adhesive layer 30 may be coated on the side of the display panel 20 facing the touch screen structure, or coated on the side of the touch screen structure facing the display panel 20 (i.e., the side of the substrate 10 opposite to the electrode layer 12), or coated on both the display panel 20 and the touch screen structure.
Therefore, the optical adhesive layer 30 is also partially filled in the hole 11, so that the optical adhesive layer and the touch screen can be combined, and the effect similar to or the same as that of the first embodiment is achieved.
In summary, the touch screen structure, the touch display device and the manufacturing method thereof provided by the invention include a substrate, wherein a plurality of holes are arranged on at least one side surface of the substrate close to the display panel; and the electrode layer is positioned on one side surface of the substrate far away from the display panel, and the electrode layer realizes a touch control function. The touch display device comprises a display panel, a touch screen structure and an optical adhesive layer positioned between the display panel and the touch screen structure; the touch screen structure is as above, the optical adhesive layer is at least arranged on one side face of the touch screen structure opposite to the display panel, so that the touch screen structure is bonded with the display panel and fills the hole. Therefore, the holes are formed in the substrate of the touch screen structure, and the optical adhesive layer fills the holes, so that the optical adhesive layer and the touch screen structure are compounded, the bending performance is effectively improved, and the film layer separation phenomenon is avoided; in addition, the optical adhesive layer can be filled into the holes, so that the adhesive force between the optical adhesive layer and the substrate is improved, the thickness of the optical adhesive layer on the side face of the touch screen structure can be reduced, and the thickness of the whole touch display device is reduced;
furthermore, the holes comprise through holes, so that the compounding degree is better improved, and the separation of film layers is avoided.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. The utility model provides a touch-sensitive screen structure for touch-sensitive display device can buckle, touch-sensitive display device can buckle includes display panel, its characterized in that includes:
a plurality of holes positioned in a display area of the bendable touch display device are arranged on at least one side surface of the substrate close to the flexible display panel; and
the electrode layer is positioned on one side surface of the substrate, which is far away from the display panel, and the electrode layer realizes a touch control function; the electrode layer is of a grid structure, openings are formed in the grid of the electrode layer and correspond to the plurality of holes, the plurality of holes are uniformly distributed in the touch screen structure, the hole diameter of each hole is 0.01mm to 0.2mm, and the distance between every two adjacent holes is 0.01mm to 0.2mm;
the plurality of holes penetrate from one side face, close to the display panel, of the substrate to one side face, far away from the display panel; or a plurality of holes are arranged on two opposite sides of the substrate, and the holes on the two sides are in one-to-one correspondence;
the optical adhesive layer is at least arranged on one side face, opposite to the display panel, of the touch screen structure, and the holes are used for filling the holes with the optical adhesive when the touch screen structure is bonded with the display panel through the optical adhesive layer.
2. The touch screen structure of claim 1, wherein the plurality of apertures are each larger from an end distal from the electrode layer than from an end proximal to the electrode layer.
3. A bendable touch display device is characterized by comprising a display panel, a touch screen structure and an optical adhesive layer positioned between the display panel and the touch screen structure; the touch screen structure is as claimed in any one of claims 1 to 2, wherein the optical adhesive layer is at least disposed on one side surface of the touch screen structure opposite to the display panel, the touch screen structure is bonded to the display panel through the optical adhesive layer, and the optical adhesive layer fills the plurality of holes.
4. A manufacturing method of a bendable touch display device is characterized by comprising the following steps:
providing a substrate;
forming a plurality of holes in a display area of the bendable touch display device on at least one side surface of the substrate close to the flexible display panel;
forming an electrode layer for realizing a touch function on one side face, away from the display panel, of the substrate, wherein the electrode layer is of a grid structure, openings are formed in the grid of the electrode layer and correspond to the holes, the substrate and the electrode layer form a touch screen structure, the holes are uniformly distributed in the touch screen structure, the hole diameter of each hole is 0.01mm to 0.2mm, and the distance between every two adjacent holes is 0.01mm to 0.2mm; and
coating an optical adhesive layer on at least one side face of the touch screen structure opposite to the display panel to realize the bonding of the touch screen structure and the display panel, wherein the optical adhesive layer fills the plurality of holes;
coating an optical adhesive layer on at least one side surface of the touch screen structure opposite to the display panel specifically comprises the following steps: and coating an optical adhesive layer on one side of the substrate close to the display panel and/or one side of the display panel close to the substrate to realize bonding.
5. The method according to claim 4, wherein the substrate is a polyimide substrate, the polyimide substrate is coated on a substrate, the plurality of holes are formed in the polyimide substrate through a mask, and after an electrode layer is formed on a side of the substrate away from the display panel, the substrate is removed to form the touch screen structure.
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| CN201810785722.0A CN109002212B (en) | 2018-07-17 | 2018-07-17 | Touch screen structure, touch display device and manufacturing method thereof |
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| CN109002212B true CN109002212B (en) | 2023-03-17 |
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| CN110706591A (en) * | 2019-09-02 | 2020-01-17 | 武汉华星光电半导体显示技术有限公司 | Display device |
| CN112506374B (en) * | 2020-12-03 | 2023-12-08 | 安徽鸿程光电有限公司 | Touch sensor, touch display module and manufacturing method of touch display module |
| CN114020175A (en) * | 2021-11-16 | 2022-02-08 | 江苏盛锐光电科技有限公司 | Touch display device |
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| EP2369453A2 (en) * | 2010-03-25 | 2011-09-28 | Winsky Technology Limited | Touch panel and method for fabricating the same |
| CN107340943A (en) * | 2017-09-14 | 2017-11-10 | 长沙市宇顺显示技术有限公司 | A kind of capacitive touch screen and its applying method |
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| KR20160090227A (en) * | 2015-01-20 | 2016-07-29 | 일진디스플레이(주) | Touch panel and display device having narrow bezel using the same |
| CN206162453U (en) * | 2016-10-08 | 2017-05-10 | 河源中光电通讯技术有限公司 | Display device and touch -sensitive screen and apron thereof |
| CN206805502U (en) * | 2017-06-07 | 2017-12-26 | 信利光电股份有限公司 | A kind of sticking structure and touch apparatus of touch-screen and casing |
| CN206892499U (en) * | 2017-07-20 | 2018-01-16 | 合肥京东方光电科技有限公司 | Touch control display apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2369453A2 (en) * | 2010-03-25 | 2011-09-28 | Winsky Technology Limited | Touch panel and method for fabricating the same |
| CN107340943A (en) * | 2017-09-14 | 2017-11-10 | 长沙市宇顺显示技术有限公司 | A kind of capacitive touch screen and its applying method |
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Application publication date: 20181214 Assignee: YUNGU (GU'AN) TECHNOLOGY Co.,Ltd.|BAZHOU YUNGU ELECTRONIC TECHNOLOGY Co.,Ltd.|KUNSHAN NEW FLAT PANEL DISPLAY TECHNOLOGY CENTER Co.,Ltd. Assignor: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS Co.,Ltd. Contract record no.: X2019990000156 Denomination of invention: Touch screen structure, touch display device and manufacturing method thereof License type: Common License Record date: 20191030 |
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Effective date of registration: 20191210 Address after: No. 2 Xiangshan Avenue, Yongning Street, Zengcheng District, Guangzhou, Guangdong province (the core of Zengcheng economic and Technological Development Zone) Applicant after: Guangzhou Guoxian Technology Co.,Ltd. Address before: 215300, No. 1, Longteng Road, Kunshan Development Zone, Jiangsu, Suzhou, 4 Applicant before: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS Co.,Ltd. |
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