CN109917959B - Display device and manufacturing method thereof - Google Patents
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- CN109917959B CN109917959B CN201910152250.XA CN201910152250A CN109917959B CN 109917959 B CN109917959 B CN 109917959B CN 201910152250 A CN201910152250 A CN 201910152250A CN 109917959 B CN109917959 B CN 109917959B
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Abstract
The invention discloses a display device and a manufacturing method thereof. The display device comprises a display panel, wherein the display panel comprises a display area and a non-display area surrounding the display area, the non-display area comprises a first bending area and a first binding area, the first binding area comprises a first panel pin and a second panel pin, and the first panel pin is used for binding a flexible circuit board or an integrated circuit chip; the orthographic projection of the laminating layer on the display panel is not overlapped with the first bending area and the first binding area; the touch panel is located on one side, far away from the display panel, of the attaching layer, the pins of the first panel are exposed, the touch panel comprises a touch area and a non-touch area surrounding the touch area, the non-touch area comprises a second bending area and a second binding area, the second binding area comprises the touch pins, and the touch pins are bound with the pins of the second panel. According to the invention, the risk of the bending position of the display device that the touch panel is warped is reduced, the touch panel and the display panel can share the same integrated circuit chip, and the simplification of a module is realized.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a manufacturing method thereof.
Background
Currently, the touch function has become an indispensable part of the display device, in a prior art, fig. 1 is a schematic diagram of a flat structure of the display device according to the prior art, fig. 2 is a schematic diagram of a folded structure of the display device according to the prior art, as shown in fig. 1 and fig. 2, the display device includes a display panel 10' and a touch panel 20', which are attached to each other through an attaching layer 30', and a flexible circuit board 50a ' is bound to the display panel 10', and another flexible circuit board 50b ' is bound to the touch panel 20 '. In order to improve user experience and achieve the display effect of a full-screen display, the prior art also proposes to fold the frame area bound with the flexible circuit board towards the back of the display panel, thereby reducing the area occupation ratio of the non-display area on the front side of the display device. However, when the above folding scheme is adopted for the display device shown in fig. 1, the touch panel 20' is often lifted away from the display panel 10' due to folding stress, and when the lifted portion extends to the display area, normal use of the touch panel 20' is affected.
Therefore, it is an urgent need in the art to provide a display device and a method for manufacturing the same to solve the above-mentioned technical problem of the touch panel being lifted off from the display panel.
Disclosure of Invention
In view of the above, the present invention provides a display device and a manufacturing method thereof, which reduce the risk of the touch panel at the bending position of the display device tilting away from the display panel, and simultaneously, the touch panel and the display panel can share the same integrated circuit chip, thereby realizing the simplification of a module and reducing the cost.
In one aspect, the present invention provides a display device to solve the above technical problems.
The display device comprises a display panel, wherein the display panel comprises a display area and a non-display area surrounding the display area, the non-display area comprises a first bending area and a first binding area positioned on one side of the first bending area far away from the display area in a first direction, the first binding area comprises a first panel pin and a second panel pin, and the first panel pin is used for binding a flexible circuit board or an integrated circuit chip; the laminating layer is positioned on one side of the light emitting surface of the display panel, and the orthographic projection of the laminating layer on the display panel is not overlapped with the first bending area and the first binding area; the touch panel is located on one side, far away from the display panel, of the attaching layer, the pins of the first panel are exposed, the touch panel comprises a touch area and a non-touch area surrounding the touch area, the non-touch area comprises a second bending area and a second binding area located on one side, far away from the touch area, of the second bending area in the first direction, the second binding area comprises the touch pins, and the touch pins are bound with the pins of the second panel.
In another aspect, the present invention provides a method for manufacturing a display device to solve the above-mentioned problems.
The manufacturing method of the display device comprises the following steps: providing a display panel, wherein the display panel comprises a display area and a non-display area surrounding the display area, in a first direction, the non-display area comprises a first area to be bent and a first binding area located on one side, far away from the display area, of the first area to be bent, and the first binding area comprises first panel pins, second panel pins and third panel pins; providing a touch panel, wherein the touch panel comprises a touch area and a non-touch area surrounding the touch area, in the first direction, the non-touch area comprises a second area to be bent and a second binding area positioned on one side of the second area to be bent far away from the touch area, and the second binding area comprises touch pins; arranging an attaching layer on one side of a light emitting surface of the display panel, and attaching the display panel to the touch panel, wherein the first panel pin and the third panel pin are exposed on the touch panel, and the attaching layer does not cover the first region to be bent and the first binding region; binding the touch pins with the pins of the second panel; providing an integrated circuit chip; binding the integrated circuit chip with the pins of the third panel; providing a flexible circuit board; binding the flexible circuit board with the pins of the first panel; and bending the first region to be bent and the second region to be bent so that the first binding region and the second binding region are bent to one side of the non-light-emitting surface of the display region.
In another aspect, the present invention provides another method for manufacturing a display device to solve the above technical problems.
The manufacturing method of the display device comprises the following steps: providing a display panel, wherein the display panel comprises a display area and a non-display area surrounding the display area, in a first direction, the non-display area comprises a first area to be bent and a first binding area positioned on one side, far away from the display area, of the first area to be bent, and the first binding area comprises first panel pins and second panel pins; providing a touch panel, wherein the touch panel comprises a touch area and a non-touch area surrounding the touch area, in the first direction, the non-touch area comprises a second area to be bent and a second binding area positioned on one side of the second area to be bent far away from the touch area, and the second binding area comprises touch pins; arranging an attaching layer on one side of a light emitting surface of the display panel, and attaching the display panel to the touch panel, wherein the first panel pin and the third panel pin are exposed on the touch panel, and the attaching layer does not cover the first region to be bent and the first binding region; binding the touch pins with the pins of the second panel; providing a flexible circuit board, wherein an integrated circuit chip is arranged on the flexible circuit board; binding the flexible circuit board with the pins of the first panel; and bending the first region to be bent and the second region to be bent so that the first binding region and the second binding region are bent to one side of the non-light-emitting surface of the display region.
Compared with the prior art, the display device and the manufacturing method thereof provided by the invention at least realize the following beneficial effects:
the technical scheme is that the display panel and the touch panel are attached to each other, and part of the frame area is bent towards the display panel, the attaching layer is arranged in part of the area of the touch panel, namely the attaching layer is not arranged in the bending area and the binding area, so that bending stress can not act on the attaching layer, the touch panel and the display panel are prevented from being separated due to the bending stress, meanwhile, the touch panel is provided with touch pins to be bound with the display panel, the display panel is bound with a flexible circuit board or an integrated circuit chip, the touch panel and the display panel can share the integrated circuit chip, the module structure is simplified, cost is saved, and due to the fault difference of the attaching layer, a gap for reducing the bending stress can be formed between the first bending area and the second bending area, and the influence of bending on the reliability of the touch panel and the display panel is prevented from being bound.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a flattened structure of a display device according to the prior art;
FIG. 2 is a schematic view of a display device according to the prior art in a folded configuration;
FIG. 3 is a schematic top view of a display device according to an embodiment of the present invention in a flattened state;
FIG. 4 is a schematic cross-sectional view illustrating a flattened state of a display device according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a display device according to an embodiment of the present invention in a folded state;
FIG. 6 is a schematic top view of a display device according to another embodiment of the present invention in a flattened state;
FIG. 7 is a schematic top view of a display device according to an embodiment of the present invention in a flattened state;
FIG. 8 is a schematic cross-sectional view illustrating a flattened state of a display device according to an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of a display device according to an embodiment of the present invention in a folded state;
FIG. 10 is a schematic top view of a display device according to an embodiment of the present invention in a flattened state;
FIG. 11 is a schematic top view of a display device according to yet another embodiment of the present invention in a flattened state;
FIG. 12 is a schematic top view of a display device according to yet another embodiment of the invention in a flattened state;
FIG. 13 is a schematic top view of a display device according to yet another embodiment of the invention in a flattened state;
FIG. 14 is a schematic cross-sectional view illustrating a flattened state of a display device according to still another embodiment of the present invention;
FIG. 15 is a schematic cross-sectional view of a display device according to another embodiment of the invention in a flattened state;
fig. 16 is a schematic cross-sectional view of a display device according to still another embodiment of the invention;
FIG. 17 is a schematic view of portions of a display device shown in an expanded state according to an embodiment of the present invention;
FIG. 18 is a schematic view of a bending region of a display device according to an embodiment of the invention;
FIG. 19 is a flowchart illustrating steps of a method for fabricating a display device according to an embodiment of the invention;
fig. 20 is a flowchart illustrating a method of fabricating a display device according to another embodiment of the invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 3 is a schematic top view showing a flat state of a display device according to an embodiment of the present invention, fig. 4 is a schematic cross-sectional view showing the flat state of the display device according to an embodiment of the present invention, fig. 5 is a schematic cross-sectional view showing a folded state of the display device according to an embodiment of the present invention, and fig. 4 is a cross-sectional view taken along a line C-C of fig. 3. In one embodiment, as shown in fig. 3 to 5, the display device includes: the display device comprises a display panel 10, an adhesive layer 30 located on one side of a light emitting surface of the display panel 10, and a touch panel 20 located on one side of the adhesive layer 30 far away from the display panel 10.
Optionally, the display panel in this embodiment includes a substrate, an array layer, an organic light emitting device layer, and an encapsulation layer, where the substrate may be formed of a flexible material. The organic light emitting device layer comprises a plurality of organic light emitting devices, each organic light emitting device comprises an anode, a cathode and a light emitting material positioned between the anode and the cathode, and when a driving current passes between the anode and the cathode, the light emitting material emits light to realize display. A thin film transistor array is disposed in the array layer for forming a pixel circuit for supplying a driving current to the anode and the cathode. The encapsulation layer may adopt a thin film encapsulation structure formed by stacking several inorganic layers and organic layers on each other.
The touch panel comprises a substrate, a plurality of conductive layers arranged on the substrate and insulating layers between the adjacent conductive layers, wherein the conductive layers form touch electrodes so as to detect touch operation of the display module.
The display panel 10 includes a display area AA and a non-display area NAA surrounding the display area AA, and in the first direction a, the non-display area NAA includes a first bending area FA1 and a first bonding area BA1 located at a side of the first bending area FA1 away from the display area AA, and the first bonding area BA1 includes first panel pins 11 and second panel pins 12, where the first panel pins 11 are directly bonded to the ic chip 40, or the first panel pins 11 are used to bond a flexible circuit board (not shown in the figure), and when the first panel pins 11 are used to bond the flexible circuit board, the flexible circuit board is provided with the ic chip 40.
The touch panel 20 exposes the first panel pins 11, and the touch panel 20 includes a touch area TA and a non-touch area NTA surrounding the touch area TA, where the touch area TA corresponds to the display area AA, and specifically, a front projection of the touch area TA on the display panel 10 overlaps with the display area AA. In the first direction a, the non-touch area NTA includes a second bending area FA2 and a second binding area BA2 located on a side of the second bending area FA2 away from the touch area TA, where the second bending area FA2 corresponds to the first bending area FA1, and an orthogonal projection of the second bending area FA2 on the display panel 10 is located in the first bending area FA 1; the second bonding area BA2 corresponds to the first bonding area BA1, and the orthographic projection of the second bonding area BA2 on the display panel 10 is located within the first bonding area BA 1. The second bonding area BA2 includes the touch pins 21, wherein the touch pins 21 are bonded to the second panel pins 12.
The adhesive layer 30 is used for adhering the display panel 10 and the touch panel 20, wherein the orthogonal projection of the adhesive layer 30 on the display panel 10 does not overlap with the first bending area FA1 and the first binding area BA1, that is, the orthogonal projection of the adhesive layer 30 on the display panel 10 is located at a portion outside the binding area of the first bending area FA1 and the first binding area BA1, and the first panel pins 11 and the second panel pins 12 are exposed.
In the display device provided in this embodiment, the touch panel 20 is provided with touch pins to be bound with the display panel 10, the display panel 10 is further bound with the flexible circuit board 50 or the integrated circuit chip 40, meanwhile, the attachment layer 30 is provided between the display panel 10 and the touch panel 20, and the attachment layer 30 ensures effective attachment between the display area AA and the touch area TA, and the attachment layer 30 is not provided between the first bending area FA1 and the second bending area FA2, after the first bending area FA1 and the second bending area FA2 are bent together, due to a break difference of the attachment layer 30, a gap GA can be formed between the first bending area FA1 and the second bending area FA2, and the gap GA can reduce bending stress between the touch panel 20 and the display panel 10, and reduce a binding effect of the bending stress on the touch pins 21 and the second panel pins 12.
In summary, with the display device provided in this embodiment, for the technical solution that the display panel is attached to the touch panel and a part of the frame area is bent toward the display panel, the attachment layer is disposed in a part of the area of the touch panel, that is, the attachment layer is not disposed in the bending area and the binding area, so that the bending stress will not act on the bonding layer, and the touch panel and the display panel are prevented from separating due to the bending stress, meanwhile, the touch panel is provided with touch pins to be bound with the display panel, and the display panel is bound with the flexible circuit board or the integrated circuit chip, so that the touch panel and the display panel can share the integrated circuit chip, the module structure is simplified, the cost is saved, and, due to the offset of the attaching layer, a gap for reducing bending stress can be formed between the first bending area and the second bending area, and the influence of bending on the binding reliability of the touch panel and the display panel is avoided.
Fig. 6 is a schematic top view illustrating a flat display device according to another embodiment of the invention, and in an embodiment, as shown in fig. 6, the embodiment is different from the embodiment shown in fig. 3 in that the touch panel 20 covers the first bending area FA1 of the display panel 10, meanwhile, the touch panel 10 includes an extension area EA extending from the second bending area FA2 towards a direction away from the touch area TA, the extension area EA is located only outside the second bending area FA2 and on a side of the second bending area FA2 close to the first binding area BA1, and preferably, the second binding area BA2 is located on at least one side of the first binding area BA1 in the second direction y.
The display device provided by the embodiment can reduce the area of the second binding region through the arrangement of the extension region, and meanwhile, the whole bending region of the display device is consistent in the degree of being influenced by bending, so that the display device is beneficial to the unification of binding materials and bending.
Optionally, in an embodiment, please continue to refer to fig. 4, the touch panel 20 includes a flexible substrate 22, and the flexible substrate 22 covers the touch area TA, the second bending area FA2 and the second binding area BA 2. The flexible substrate 22 may be formed of a polymer material such as Polyimide (PI), Polycarbonate (PC), Polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polyarylate (PAR), or glass Fiber Reinforced Plastic (FRP). The flexible substrate 22 is a transparent substrate to reduce the influence on the display light.
By adopting the display device provided by the embodiment, in the bending area, the touch panel is positioned on the bent convex surface, the bending process can be subjected to stretching force, and the substrate of the touch panel is set to be the flexible substrate, so that the stretching resistance of the touch panel can be improved, and the influence of bending on touch is reduced.
Alternatively, in an embodiment, please continue to refer to fig. 4 and 5, the thickness D4 of the lamination layer 30 is greater than 30 microns and less than 60 microns.
By adopting the display device provided by the embodiment, the thickness range of the laminating layer is limited to be 30-60 micrometers, the proper size of the gap GA is ensured, the touch panel can be prevented from being broken due to overlarge bending section difference, a large enough gap can be provided, and the bending stress is reduced to the maximum extent.
Alternatively, in an embodiment, please continue to refer to fig. 4, the substrate thickness D5 of the touch panel 20 is greater than 5 microns and less than 10 microns.
By adopting the display device provided by the embodiment, the thickness of the substrate of the touch panel is limited to be between 5 micrometers and 10 micrometers, so that on one hand, the damage to the touch panel caused by overlarge bending stress due to the overlarge whole thickness of the touch panel is avoided, and on the other hand, the damage caused by the tensile force when the touch panel is bent due to the overlarge thickness of the touch panel is also avoided.
Fig. 7 is a schematic top view showing a flat state of a display device according to an embodiment of the present invention, fig. 8 is a schematic cross-sectional view showing the flat state of the display device according to an embodiment of the present invention, fig. 9 is a schematic cross-sectional view showing a folded state of the display device according to an embodiment of the present invention, and fig. 8 is a cross-sectional view taken along a line D-D of fig. 7. Optionally, in an embodiment, as shown in fig. 7 to 9, the touch panel 20 has a gap NA exposing the first panel pins 11, and the second bonding area BA2 is at least located on one side of the gap NA in a second direction b, wherein the second direction b is perpendicular to the first direction a.
By adopting the display device provided by the embodiment, the touch panel is arranged in the special shape with the notch, the panel pins binding the display panel and the integrated circuit chip (and/or the flexible circuit board) are exposed at the notch, and the binding area is arranged on one side of the notch to bind with the display panel. Meanwhile, when the notch of the display device is formed, only one side, close to the second binding area, of the first area of the touch panel, in one side, close to the binding area of the display panel, of the first area extends to the second binding area, optionally extends to at least one side in the second direction of the first binding area, so that a bending area and the touch binding area are formed, and the bending area and the touch binding area are connected with partial edges of the first area to form the outline of the notch together.
It will be appreciated that the display panel described herein includes regions comprising the same film layer that are integrally formed, e.g., all comprising the same substrate base. Similarly, the touch panel of the present application includes regions that include the same film layer integrally formed, for example, all including the same substrate.
Fig. 10 is a schematic top view illustrating a display device in a flattened state according to an embodiment of the invention, and optionally, in an embodiment, as shown in fig. 10, in the second direction b, second bonding areas BA2 are disposed on two sides of the gap NA, the touch pins 21 include first touch pins 21a and second touch pins 21b, and the first touch pins 21a and the second touch pins 21b are respectively disposed on two sides of the gap NA.
By adopting the display device provided by the embodiment, the touch pins are respectively arranged on the two sides of the notch and bound with the panel, so that the signal lines from the integrated circuit chip to the touch panel can be uniformly led in from the two sides of the notch.
Alternatively, in one embodiment, with continued reference to fig. 10, the gap NA exposes a portion of the first inflection region FA 1.
By adopting the display device provided by the embodiment, the notch exposes a part of the first bending area, namely, only the display panel is arranged in the bending area exposed by the notch, and the touch panel is not arranged, so that the bending stress of the part of the bending area is small, and the influence on the touch panel is small.
FIG. 11 is a schematic top view illustrating a flat display device according to yet another embodiment of the present invention, wherein in an alternative embodiment, as shown in FIG. 11, at least in one first cross section S1, the notch NA completely exposes the first inflection region FA 1; wherein the first section S1 is a section of the display panel 10 perpendicular to the second direction b.
By adopting the display device provided by the embodiment, the notch completely exposes the first bending area at the first section position, so that the bending stress of the bending area is further reduced.
Optionally, as shown in fig. 11, the second bonding areas BA2 of the touch panel 20 on both sides of the gap area NA respectively cover both ends of the first bonding area BA1 of the display panel 10 in the second direction b; alternatively, the second bonding area BA2 and the second inflection area FA2 form a stripe structure extending in the first direction a; optionally, in the second direction b, an edge of the second binding area BA2 away from the touch area TA is flush with an edge of the first binding area BA1 away from the display area AA.
Adopt the display device that this embodiment provided, both can avoid buckling through the breach and cause the extrusion of display panel and touch panel like this, simultaneously, can also reduce the width of touch panel in the second direction in the bending zone, and the second is bound district and second bending zone and is formed the strip structure that extends along the first direction, be favorable to touch panel along the first direction tensile, and in the display device bending zone, touch panel is located the protruding side of buckling of display panel, therefore, touch panel can be stretched by flattening state when buckling the state, can avoid touch panel breaking in tensile process through above-mentioned strip structure. In the second direction, touch panel and display panel's edge parallel and level, and under the general condition, display panel's edge bumps easily, and this kind of edge overlapping's mode of setting can improve the shock-resistant ability in edge, and edge collision is impaired when avoiding buckling.
FIG. 12 is a schematic top view of a display device according to yet another embodiment of the present invention in a flattened state, alternatively, in one embodiment, as shown in FIG. 12, the first panel pins 11 are used for bonding the integrated circuit chip 40; the first binding area BA1 further includes a third panel pin 13, the notch NA exposes the third panel pin 13, and the third panel pin 13 is used for binding the flexible circuit board 50; in the first direction a, the first panel pin 11 is located at a side of the third panel pin 13 close to the display area AA.
By adopting the display device provided by the embodiment, the display panel is respectively bound with the integrated circuit chip and the flexible circuit board, and the panel pin bound with the integrated circuit chip is arranged at one side close to the display area, and the panel pin bound with the flexible circuit board is arranged at one side close to the end part of the display panel, so that the integrated circuit chip is bound firstly, and then the flexible circuit board is bound, and the binding process is simple
Fig. 13 is a schematic top view illustrating a display device according to still another embodiment of the invention in a flattened state, and optionally, in an embodiment, as shown in fig. 13, the first panel pins 11 are used for binding a flexible circuit board 50, and the integrated circuit chip 40 is disposed on the flexible circuit board 50.
By adopting the display device provided by the embodiment, the display panel only needs to be bound with the flexible circuit board, and the integrated chip is arranged on the flexible circuit board, so that the narrow frame is favorably realized.
Fig. 14 is a cross-sectional view illustrating a flattened state of a display device according to still another embodiment of the present invention, wherein fig. 14 is a cross-sectional view taken along a line E-E of fig. 13. Alternatively, in one embodiment, as shown in fig. 13 and 14, the circuit board pins 51 of the flexible circuit board 50 are bound with the first panel pins 11; in a third direction c, the thickness sum D1 of the circuit board pins 51 and the first panel pins 11 is equal to the thickness sum D2 of the touch control pins 21 and the second panel pins 12, wherein the third direction c is perpendicular to the plane of the display area AA of the display panel 10. It is understood that, in other optional embodiments, each of the pins in the present invention may specifically include a conductive adhesive, a conductive ball, and the like, and the sum of the thicknesses of the circuit board pin 51 and the first panel pin 11 refers to a vertical distance between corresponding binding positions on two sides of the flexible circuit board and the display panel, and the sum of the thicknesses of the touch control pin 21 and the second panel pin 12 refers to a vertical distance between corresponding binding positions on two sides of the touch control panel and the display panel.
By adopting the display device provided by the embodiment, the sum of the thicknesses of the circuit board pins and the first panel pins is equal to the sum of the thicknesses of the touch control pins and the second panel pins, so that the circuit board pins and the first panel pins, and the touch control pins and the second panel pins can be respectively and correspondingly bound in the same binding process, the process flow is reduced, and the cost is saved.
FIG. 15 is a schematic cross-sectional view of a display device according to another embodiment of the invention in a flattened state; fig. 16 is a schematic cross-sectional view of a display device according to still another embodiment of the present invention, and in one embodiment, as shown in fig. 15 and 16, an adhesive layer 60 is disposed between the first bending region FA1 and the display area AA, and a bent portion of the display device can be adhered to a flattened portion by the adhesive layer 60, so that the bent state of the bent portion can be maintained.
In one embodiment, the length of the second inflection region FA2 is longer than the length of the first inflection region FA1 in the first direction when the display device is in a flattened state. Therefore, the second bending area FA2 of the touch panel 20 is bent, and the second bending area FA2 of the touch panel 20 is bent in a cache manner in a flat state of the display device, so that when the bending area of the display device is bent, a bending tension of the second bending area FA2 is changed from a bending state to a flat state, that is, only the state is changed, thereby preventing the touch panel 20 from being damaged due to the bending tension, and further, edges of the bending areas of the display panel 10 and the touch panel 20 are aligned, or an edge of the bonding area of the display panel 10 is aligned with an edge of the bonding area of the touch panel.
In the display device provided in this embodiment, in the bending area of the display device, the touch panel is located on the convex side of the display panel, that is, the touch panel may receive a stretching force in the bending process, and the length of the second bending area is set to be longer than the length of the first bending area, so that the stretching force received by the touch panel can be reduced, and thus the touch panel is prevented from breaking due to stretching.
Further, in one embodiment, FIG. 17 is a schematic diagram illustrating portions of a display device according to one embodiment of the invention being flattened; fig. 18 is a schematic view of a bending region of a display device according to an embodiment of the invention, fig. 17 is a schematic view of a display panel, a touch panel, and the like of the display device after being completely flattened, and fig. 18 is an enlarged view of the bending region in fig. 16. The difference between the length of the second inflection zone FA2 and the length of the first inflection zone FA1 is less than or equal to Δ L:
wherein h is the length of the bending region in the first direction a when the display device is in the bending state, d1 is the thickness of the display panel, d2 is the thickness of the touch panel, d3 is the thickness of the adhesive layer, and d4 is the thickness of the adhesive layer.
In the display device provided in this embodiment, when the length of the second inflection region FA2 is equal to the length of the first inflection region FA1, the inflection diameter R of the inflection region:
R＝2d1+2d2+d3+d4，
and when the length of the second inflection region FA2 is different from the length of the first inflection region FA1 by Δ L, as shown in fig. 18,
thus, on the premise that the length of the bending region in the first direction a is constant when the display device is in the bending state, the display device can obtain
Optionally, in one embodiment, if h is 0.5 mm, d1 ═ 15 microns, d2 ═ 10 microns, d3 ═ 30 microns, and d4 ═ 10 microns, Δ L is 0.91 mm.
By adopting the display device provided by the embodiment, the maximum value of the difference value between the length of the second bending region and the length of the first bending region is limited through the formula, so that the length of the bending region in the first direction when the display device is in the bending state is ensured to be smaller than a preset value, the overlong length of the second bending region is avoided, the overlong length of the bending region in the first direction when the display device is in the bending state is enabled, and the area of a non-display region of the display device is increased.
It can be understood that, in the drawings of the present embodiment, the bending region of the touch panel and the bending region of the display panel are not in surface contact with each other in the bending state, but in other alternative embodiments of the present invention, the bending region of the touch panel and the bending region of the display panel may be in surface contact with each other in the bending state.
The display device provided by the embodiment of the invention has the corresponding technical features and technical effects, and for the technical effect, reference is made to the above description, and details will not be given below.
Fig. 19 is a flowchart illustrating steps of a method for manufacturing a display device according to an embodiment of the present invention, and in an embodiment, as shown in fig. 12 and 19, the method for manufacturing a display device includes steps S101 to S109 as follows.
Step S101: a display panel 10 is provided.
The display panel 10 includes a display area AA and a non-display area NAA surrounding the display area AA, and in the first direction a, the non-display area NAA includes a first area to be bent FA1 and a first bonding area BA1 located on a side of the first area to be bent FA1 away from the display area AA, and the first bonding area BA1 includes first panel pins 11, second panel pins 12, and third panel pins 13.
Step S102: a touch panel 20 is provided.
The touch panel 20 includes a touch area TA and a non-touch area NTA surrounding the touch area TA, in the first direction a, the non-touch area NTA includes a second to-be-bent area FA2 and a second bonding area BA2 located on a side of the second to-be-bent area FA2 away from the touch area TA, and the second bonding area BA2 includes touch pins 21.
Step S103: a bonding layer 30 is disposed on one side of the light emitting surface of the display panel 10 to bond the display panel 10 and the touch panel 20.
The touch panel 20 exposes the first panel pins 11 and the third panel pins 13, and the attachment layer 30 does not cover the first area to be bent FA1 and the first bonding area BA 1.
Step S104: the touch pins 21 are bonded to the second panel pins 12.
Step S105: an integrated circuit chip 40 is provided.
Step S106: the integrated circuit chip 40 is bonded to the third panel pins 13.
Step S107: a flexible circuit board 50 is provided.
Step S108: the flexible circuit board 50 is bound to the first panel pins 11.
Step S109: the first region to be bent and the second region to be bent are bent, so that the first bonding region BA1 and the second bonding region BA2 are bent to one side of the non-light-emitting surface of the display area AA.
Fig. 20 is a flowchart illustrating steps of a manufacturing method of a display device according to another embodiment of the present invention, and in one embodiment, as shown in fig. 13 and 20, the manufacturing method of the display device according to this embodiment includes steps S201 to S206 as follows.
Step S201: a display panel 10 is provided.
The display panel 10 includes a display area AA and a non-display area NAA surrounding the display area AA, and in the first direction a, the non-display area NAA includes a first area to be bent FA1 and a first bonding area BA1 located on a side of the first area to be bent FA1 away from the display area AA, and the first bonding area BA1 includes first panel pins 11 and second panel pins 12.
Step S202: a touch panel 20 is provided.
The touch panel 20 includes a touch area TA and a non-touch area NTA surrounding the touch area TA, in the first direction a, the non-touch area NTA includes a second to-be-bent area FA2 and a second bonding area BA2 located on a side of the second to-be-bent area FA2 away from the touch area TA, and the second bonding area BA2 includes touch pins 21.
Step S203: a bonding layer 30 is disposed on one side of the light emitting surface of the display panel 10 to bond the display panel 10 and the touch panel 20.
The touch panel 20 exposes the first panel pins 11 and the third panel pins, and the attachment layer 30 does not cover the first region to be bent and the first bonding region BA 1.
Step S204: a flexible circuit board 50 is provided, wherein the flexible circuit board 50 is provided with an integrated circuit chip 40.
Step S205: the touch pins 21 are bonded to the second panel pins 12, and the flexible circuit board 50 is bonded to the first panel pins 11.
Step S206: the first to-be-bent area FA1 and the second to-be-bent area FA2 are bent, so that the first binding area BA1 and the second binding area BA2 are bent to one side of the non-light-emitting surface of the display area AA.
As can be seen from the above embodiments, the display device and the manufacturing method thereof provided by the present invention at least achieve the following beneficial effects:
the technical scheme is that the display panel and the touch panel are attached to each other, and part of the frame area is bent towards the display panel, the attaching layer is arranged in part of the area of the touch panel, namely the attaching layer is not arranged in the bending area and the binding area, so that bending stress can not act on the attaching layer, the touch panel and the display panel are prevented from being separated due to the bending stress, meanwhile, the touch panel is provided with touch pins to be bound with the display panel, the display panel is bound with a flexible circuit board or an integrated circuit chip, the touch panel and the display panel can share the integrated circuit chip, the module structure is simplified, cost is saved, and due to the fault difference of the attaching layer, a gap for reducing the bending stress can be formed between the first bending area and the second bending area, and the influence of bending on the reliability of the touch panel and the display panel is prevented from being bound.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (14)
1. A display device, comprising:
the display panel comprises a display area and a non-display area surrounding the display area, wherein in a first direction, the non-display area comprises a first bending area and a first binding area positioned on one side, far away from the display area, of the first bending area, the first binding area comprises first panel pins and second panel pins, and the first panel pins are used for binding a flexible circuit board or an integrated circuit chip;
the laminating layer is positioned on one side of the light emitting surface of the display panel, and the orthographic projection of the laminating layer on the display panel is not overlapped with the first bending area and the first binding area;
the touch panel is located on one side, away from the display panel, of the attaching layer, the first panel pins are exposed, the touch panel comprises a touch area and a non-touch area surrounding the touch area, the non-touch area comprises a second bending area and a second binding area located on one side, away from the touch area, of the second bending area in the first direction, the second binding area comprises touch pins, and the touch pins are bound with the second panel pins.
2. The display device according to claim 1,
the touch panel comprises a flexible substrate, and the flexible substrate covers the touch area, the second bending area and the second binding area.
3. The display device according to claim 1,
the touch panel is provided with a gap, and the first panel pin is exposed by the gap;
in a second direction, the second binding region is at least located on one side of the notch, wherein the second direction is perpendicular to the first direction.
4. The display device according to claim 3,
in the second direction, the second binding areas are arranged on two sides of the notch, the touch pins comprise first touch pins and second touch pins, and the first touch pins and the second touch pins are respectively located on two sides of the notch.
5. The display device of claim 3, wherein the notch exposes a portion of the first bending region.
6. The display device according to claim 5,
at least in one first section, the notch completely exposes the first bending zone;
wherein the first cross section is a cross section of the display panel perpendicular to the second direction.
7. The display device according to claim 3,
the first panel pin is used for binding an integrated circuit chip;
the first binding region further comprises a third panel pin, the notch exposes the third panel pin, and the third panel pin is used for binding a flexible circuit board;
in the first direction, the first panel pins are located on one side of the third panel pins close to the display area.
8. The display device according to claim 3,
the first panel pin is used for binding a flexible circuit board, and the integrated circuit chip is arranged on the flexible circuit board.
9. The display device according to claim 8,
the circuit board pins of the flexible circuit board are bound with the first panel pins;
in a third direction, the sum of the thicknesses of the circuit board pins and the first panel pins is equal to the sum of the thicknesses of the thickness of the touch pins and the thickness of the second panel pins, wherein the third direction is perpendicular to a plane where a display area of the display panel is located.
10. The display device according to claim 1,
the thickness of the laminating layer is larger than 30 micrometers and smaller than 60 micrometers.
11. The display device according to claim 1,
the substrate thickness of the touch panel is greater than 5 microns and less than 10 microns.
12. The display device according to claim 1,
an adhesive layer is arranged between the first bending area and the display area;
when the display device is in a flattening state, in a first direction, the length of the second bending area is greater than that of the first bending area, and the difference between the length of the second bending area and the length of the first bending area is less than or equal to delta L:
13. A method for manufacturing a display device, comprising:
providing a display panel, wherein the display panel comprises a display area and a non-display area surrounding the display area, in a first direction, the non-display area comprises a first area to be bent and a first binding area located on one side, far away from the display area, of the first area to be bent, and the first binding area comprises a first panel pin, a second panel pin and a third panel pin;
providing a touch panel, wherein the touch panel comprises a touch area and a non-touch area surrounding the touch area, in the first direction, the non-touch area comprises a second area to be bent and a second binding area located on one side, far away from the touch area, of the second area to be bent, and the second binding area comprises touch pins;
arranging an attaching layer on one side of a light emitting surface of the display panel, and attaching the display panel to the touch panel, wherein the first panel pin and the third panel pin are exposed on the touch panel, and the attaching layer does not cover the first region to be bent and the first binding region;
binding the touch pins with the pins of the second panel;
providing an integrated circuit chip;
binding the integrated circuit chip with the third panel pin;
providing a flexible circuit board;
binding the flexible circuit board with the first panel pins;
and bending the first region to be bent and the second region to be bent so as to bend the first binding region and the second binding region to one side of the non-light-emitting surface of the display region.
14. A method for manufacturing a display device, comprising:
providing a display panel, wherein the display panel comprises a display area and a non-display area surrounding the display area, in a first direction, the non-display area comprises a first area to be bent and a first binding area located on one side, far away from the display area, of the first area to be bent, and the first binding area comprises a first panel pin, a second panel pin and a third panel pin;
providing a touch panel, wherein the touch panel comprises a touch area and a non-touch area surrounding the touch area, in the first direction, the non-touch area comprises a second area to be bent and a second binding area located on one side, far away from the touch area, of the second area to be bent, and the second binding area comprises touch pins;
arranging an attaching layer on one side of a light emitting surface of the display panel, and attaching the display panel to the touch panel, wherein the first panel pin and the third panel pin are exposed on the touch panel, and the attaching layer does not cover the first region to be bent and the first binding region;
providing a flexible circuit board, wherein an integrated circuit chip is arranged on the flexible circuit board;
binding the touch pins with the pins of the second panel, and binding the flexible circuit board with the pins of the first panel;
and bending the first region to be bent and the second region to be bent so as to bend the first binding region and the second binding region to one side of the non-light-emitting surface of the display region.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4053624A4 (en) * | 2019-11-01 | 2022-11-09 | BOE Technology Group Co., Ltd. | Display module and display device |
| WO2021208921A1 (en) * | 2020-04-13 | 2021-10-21 | 海信视像科技股份有限公司 | Display device |
| CN112198981A (en) * | 2020-09-25 | 2021-01-08 | 合肥维信诺科技有限公司 | Display module, preparation method thereof and display device |
| CN112908164A (en) * | 2021-01-21 | 2021-06-04 | 厦门天马微电子有限公司 | Display module, manufacturing method of display module and display device |
| CN113053971B (en) * | 2021-03-10 | 2022-07-26 | 武汉天马微电子有限公司 | Display module and display device |
| CN113793862B (en) * | 2021-09-13 | 2024-05-10 | 京东方科技集团股份有限公司 | Display panel, display module and preparation method of display module |
| CN114816116A (en) * | 2022-04-15 | 2022-07-29 | 武汉华星光电半导体显示技术有限公司 | Touch control display device |
| CN115003012A (en) * | 2022-06-13 | 2022-09-02 | 京东方科技集团股份有限公司 | Flexible circuit board and display device |
| CN115038235B (en) * | 2022-06-29 | 2024-07-12 | 京东方科技集团股份有限公司 | Flexible circuit board, display panel and display device |
| CN115359731B (en) * | 2022-08-24 | 2023-12-22 | 京东方科技集团股份有限公司 | Display module and display device |
| CN116249400A (en) * | 2022-12-01 | 2023-06-09 | 京东方科技集团股份有限公司 | Display substrate and display device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016047990A2 (en) * | 2014-09-25 | 2016-03-31 | 동우 화인켐 주식회사 | Touch sensing electrode integrally formed with polarizing plate, display device comprising same, and manufacturing method therefor |
| CN108052233A (en) * | 2018-01-03 | 2018-05-18 | 上海天马微电子有限公司 | Display panel and display device |
| CN108281387A (en) * | 2018-01-23 | 2018-07-13 | 武汉华星光电半导体显示技术有限公司 | The production method and flexible display apparatus of flexible display apparatus |
| CN108762562A (en) * | 2018-05-25 | 2018-11-06 | 京东方科技集团股份有限公司 | A kind of display base plate, display panel, touch control display apparatus and preparation method thereof |
| CN108803164A (en) * | 2018-05-31 | 2018-11-13 | 厦门天马微电子有限公司 | A kind of display device |
| CN108920014A (en) * | 2018-08-10 | 2018-11-30 | 业成科技（成都）有限公司 | Touch sensing and touching display screen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425142B (en) * | 2017-04-27 | 2019-08-02 | 京东方科技集团股份有限公司 | A kind of preparation method and flexible display apparatus of flexible display apparatus |
-
2019
- 2019-02-28 CN CN201910152250.XA patent/CN109917959B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016047990A2 (en) * | 2014-09-25 | 2016-03-31 | 동우 화인켐 주식회사 | Touch sensing electrode integrally formed with polarizing plate, display device comprising same, and manufacturing method therefor |
| CN108052233A (en) * | 2018-01-03 | 2018-05-18 | 上海天马微电子有限公司 | Display panel and display device |
| CN108281387A (en) * | 2018-01-23 | 2018-07-13 | 武汉华星光电半导体显示技术有限公司 | The production method and flexible display apparatus of flexible display apparatus |
| CN108762562A (en) * | 2018-05-25 | 2018-11-06 | 京东方科技集团股份有限公司 | A kind of display base plate, display panel, touch control display apparatus and preparation method thereof |
| CN108803164A (en) * | 2018-05-31 | 2018-11-13 | 厦门天马微电子有限公司 | A kind of display device |
| CN108920014A (en) * | 2018-08-10 | 2018-11-30 | 业成科技（成都）有限公司 | Touch sensing and touching display screen |
Non-Patent Citations (1)
| Title |
|---|
| 液晶显示窄边框专利技术分析;付莹，梁燕；;《中国科技信息》;20160731;第102-103页 * |
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