CN111766729A - Display device and manufacturing method thereof - Google Patents
Display device and manufacturing method thereof Download PDFInfo
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- CN111766729A CN111766729A CN202010582937.XA CN202010582937A CN111766729A CN 111766729 A CN111766729 A CN 111766729A CN 202010582937 A CN202010582937 A CN 202010582937A CN 111766729 A CN111766729 A CN 111766729A
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- area
- cover plate
- display
- optical adhesive
- adhesive layer
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
Abstract
The invention discloses a display device and a manufacturing method thereof, wherein the display device comprises a cover plate and a display panel which are oppositely arranged, the cover plate is positioned on the light emergent side of the display panel, and the cover plate comprises a light transmitting area and a light shading area surrounding the light transmitting area; the display panel comprises an array substrate, the array substrate comprises a display area and a non-display area surrounding the display area, the display area corresponds to the light-transmitting area, the non-display area corresponds to the light-shielding area, the non-display area comprises a step area, one side of the step area, which is close to the cover plate, comprises a supporting member, and the supporting member is clamped between the light-shielding area and the step area; the display device also comprises an optical adhesive layer, wherein the optical adhesive layer is positioned between the cover plate and the display panel; the support member comprises a part of the optical glue layer at a position corresponding to the step area. The display device provided by the invention reuses the optical adhesive layer at the step area as at least part of the supporting member, and can solve the problems that the step area is easy to crack, and the impact resistance and the drop resistance of the product are poor.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a manufacturing method thereof.
Background
With the rapid development of display technology, both the size and the display quality of display devices have been developed in a breakthrough manner. Therefore, display devices are increasingly widely used in human life. However, when the existing display device receives an external force, for example, falls or an object falls on the surface of each display screen, the display screen is easily broken, so that the device cannot be normally used, and inconvenience is brought to a user.
Disclosure of Invention
In view of the above, the problem that the step area is easy to crack and the product has poor impact resistance and drop resistance is solved.
In one aspect, the invention provides a display device, which includes a cover plate and a display panel, wherein the cover plate and the display panel are oppositely arranged, the cover plate is located on a light-emitting side of the display panel, and the cover plate includes a light-transmitting area and a light-shielding area surrounding the light-transmitting area;
the display panel comprises an array substrate, the array substrate comprises a display area and a non-display area surrounding the display area, the display area corresponds to the light-transmitting area, the non-display area corresponds to the light-shielding area, the non-display area comprises a step area, one side, close to the cover plate, of the step area comprises a supporting member, and the supporting member is clamped between the light-shielding area and the step area;
the display device further comprises an optical adhesive layer, and the optical adhesive layer is positioned between the cover plate and the display panel;
the support member comprises a part of the optical glue layer at a position corresponding to the step area.
In another aspect, the present invention provides a method for manufacturing a display device, including the steps of:
providing a cover plate, wherein the cover plate comprises a light-transmitting area and a light-shielding area surrounding the light-transmitting area;
providing a display panel, wherein the display panel comprises an array substrate, the array substrate comprises a display area and a non-display area surrounding the display area, the display area corresponds to the light-transmitting area, the non-display area corresponds to the light-shielding area, and the non-display area comprises a step area;
providing a mother optical adhesive layer, wherein the mother optical adhesive layer comprises a bottom film and an optical adhesive layer,
forming a support member in the step area, and forming at least part of the support member on the optical adhesive layer at the position corresponding to the step area in the direction vertical to the plane of the display panel;
removing the bottom film to enable the optical adhesive layer to be attached to the cover plate;
and attaching one side of the optical adhesive layer, which is far away from the cover plate, to the display panel, so that the supporting member is positioned on one side of the step area, which is close to the cover plate, and the supporting member is clamped between the shading area and the step area. Compared with the prior art, the display device and the manufacturing method thereof provided by the invention have the advantages that the side, close to the cover plate, of the step area comprises the supporting member, and the supporting member is clamped between the shading area and the step area; the display device also comprises an optical adhesive layer, wherein the optical adhesive layer is positioned between the cover plate and the display panel; the support member comprises a part of the optical glue layer at a position corresponding to the step area. The optical adhesive layer at the step area is reused as part of the supporting member, when the display panel is subjected to external force, the supporting member can play a role in buffering, stress concentration at the peripheral edges of the display panel is avoided, and therefore cracking of the display panel is avoided, and the shock resistance and the falling resistance of the product can be improved; meanwhile, the optical adhesive layer is at least reused as part of the supporting member, so that the process difficulty of the supporting member and the process steps can be reduced.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above technical effects simultaneously.
Other features and advantages of the present invention 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 display device according to the prior art;
FIG. 2 is a cross-sectional view taken along line N-N' of FIG. 1;
FIG. 3 is a schematic diagram of a display device according to the prior art;
FIG. 4 is a cross-sectional view taken along line T-T' of FIG. 3;
FIG. 5 is a schematic structural diagram of a display device according to the present invention;
FIG. 6 is a cross-sectional view taken along line M-M' of FIG. 5;
FIG. 7 is a further cross-sectional view taken along line M-M' of FIG. 5;
FIG. 8 is a further cross-sectional view taken along line M-M' of FIG. 5;
FIG. 9 is a schematic structural diagram of another display device according to the present invention;
FIG. 10 is a cross-sectional view taken along line W-W' of FIG. 9;
FIG. 11 is a further cross-sectional view taken in the direction W-W' of FIG. 9;
FIG. 12 is a further cross-sectional view taken along line M-M' of FIG. 5;
FIG. 13 is a further cross-sectional view taken along line M-M' of FIG. 5;
FIG. 14 is a further cross-sectional view taken along line M-M' of FIG. 5;
FIG. 15 is a schematic structural diagram of another display device according to the present invention;
FIG. 16 is an enlarged partial view of the stepped region of FIG. 15;
FIG. 17 is a cross-sectional view taken along line U-U' of FIG. 15;
FIG. 18 is a further sectional view taken along line U-U' of FIG. 15;
FIG. 19 is a flow chart illustrating a method for fabricating a display device according to the present invention;
FIG. 20 is a flow diagram of one configuration of FIG. 19;
FIG. 21 is a flow chart of yet another configuration of FIG. 19;
fig. 22 is a flow chart of yet another configuration of fig. 19.
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, it need not be discussed further in subsequent figures.
Fig. 1 is a schematic structural view of a display device 100 according to the related art, and fig. 2 is a cross-sectional view taken along the direction N-N' in fig. 1. A display device 100 provided in the prior art includes a cover plate 01 and a display panel 02 which are oppositely disposed, where the display panel 02 includes a color film substrate 021 and an array substrate 022 which are oppositely disposed, the array substrate 022 extends outward relative to the color film substrate 021 to form a step area 03, and the step area 03 is used for attaching a driver IC. Because the clearance has between 01 and the array substrate 022 of apron that the position department is corresponded to step district 03, and then current display panel 02 is when receiving external force, and step district 03 corresponds position department apron atress inequality and can cause cracked, and then can lead to display panel 02's display screen to break, makes display panel 02 unable normal use like this, influences the customer and uses.
Meanwhile, in the prior art, in order to avoid the display device 100 from being cracked due to stress concentration at the peripheral edges thereof and improve the shock resistance and drop resistance thereof, another display device 100 'is proposed, which is shown in fig. 3 and 4, fig. 3 is a schematic structural view of the another display device in the prior art, and fig. 4 is a cross-sectional view taken along the direction T-T' in fig. 3. The display device 100 ' includes a cover plate 01 ' and a display panel 02 ' that are disposed opposite to each other, where the display panel 02 ' includes a color film substrate 021 ' and an array substrate 022 ' that are disposed opposite to each other, the array substrate 022 ' extends outward relative to the color film substrate 021 ' to form a step area 03 ', and a silicone adhesive 04 ' is disposed at the position of the step area 03 ' to overlap the cover plate 01 ', and an overlapping area ratio is greater than 50%, although the silicone adhesive 04 ' may solve a problem that the display device 100 ' is easily broken at a position corresponding to the step area 03 ' at a certain degree. However, in the general display device 100 ', in order to prevent the light leakage, the light-shielding ink layer 012 ' is disposed in the light-shielding region 011 ' of the cover plate 01 ' during the process of manufacturing the cover plate 01 '. Furthermore, the silicone adhesive 04 'partially contacts the light-shielding ink layer 012', the light-shielding ink layer 012 'contains matte powder, the porosity of the matte powder is large, the matte powder is exposed in the air and is easy to absorb moisture, meanwhile, the silicone adhesive 04' contains a silicone oil component, after contacting the light-shielding ink layer 012 ', the silicone oil in the silicone adhesive 04' is absorbed by the matte powder and permeates into the ink, the silicone oil permeates into the area of the light-shielding ink layer 012 ', the wiping with alcohol cannot be improved, and the adhesion of the structure of the display device 100' is affected.
In order to solve the above technical problem, the present invention provides a display device. The following description will be made in detail with respect to embodiments of the display device provided in the present invention.
In this embodiment, please refer to fig. 5 and fig. 6, in which fig. 5 is a schematic structural diagram of a display device according to the present invention, and fig. 6 is a cross-sectional view along the direction M-M' in fig. 5. The display device 200 in this embodiment includes a cover plate 1 and a display panel 2, which are oppositely disposed, the cover plate 1 is located on a light emitting side Q of the display panel 2, the cover plate 1 includes a light transmitting area 11 and a light shielding area 12 surrounding the light transmitting area 11; the display panel 2 comprises an array substrate 21, the array substrate 21 comprises a display area AA and a non-display area BB surrounding the display area AA, the display area AA corresponds to the light-transmitting area 11, the non-display area BB corresponds to the light-shielding area 12, the non-display area BB comprises a step area 3, one side, close to the cover plate 1, of the step area 3 comprises a supporting member 4, and the supporting member 4 is clamped between the light-shielding area 12 and the step area 4; the display device 200 further comprises an optical adhesive layer 5, wherein the optical adhesive layer 5 is positioned between the cover plate 1 and the display panel 2; the support member 4 includes a portion of the optical glue layer 5 at a position corresponding to the stepped region 3. The display panel 2 may further include an opposite substrate 22 disposed opposite to the array substrate 21, and the array substrate 21 extends outward relative to the opposite substrate 22 to form a step area 3.
It can be understood that, in the prior art, the optical adhesive layer 5 needs to be disposed to attach the cover plate 1 and the display panel 2, and the present invention may be disposed to at least partially overlap an orthographic projection of the optical adhesive layer 5 on a plane of the cover plate with an orthographic projection of the step area 3 on a plane of the cover plate, that is, the optical adhesive layer is disposed at a position corresponding to the step area 3, and the display device 200 of the present invention includes the supporting member 4, and the supporting member 4 is sandwiched between the light shielding area 12 and the step area 3, so that when the display device 200 is subjected to an external force, the supporting member 4 may play a role of buffering, so as to prevent the display device 200 from being cracked due to stress concentration at the peripheral edges of the display device 200, and further improve the impact resistance and drop resistance of the. Meanwhile, the supporting member 4 is clamped between the shading area 12 and the step area 3, and the part of the optical adhesive layer corresponding to the step area 3 is arranged, so that the part of the optical adhesive layer 5 corresponding to the step area 3 can be reused as a part of the supporting member 4, thereby being beneficial to reducing the process difficulty of the supporting member 4, reducing the process steps and the manufacturing cost, and further being beneficial to improving the manufacturing process.
Optionally, with continued reference to fig. 6, in order to prevent light leakage, the display device 200 may be provided with a light-shielding ink layer 14 in the light-shielding region 12 of the cover plate 1 during the process of producing the cover plate 1. Because at least part of the supporting member 4 close to one side of the cover plate 1 provided by the invention is multiplexed by the optical adhesive layer 5, and the optical adhesive layer 5 comprises the natural resin optical adhesive and the synthetic resin optical adhesive, the problems caused by the silicone adhesive in the prior art can not be generated, and further, the supporting member 4 in the display device 200 provided by the invention not only can be beneficial to reducing the process difficulty of the supporting member 4 and the process steps, but also can be beneficial to avoiding the problem of influencing the adhesion of the structure of the display device 200.
In some alternative embodiments, with continued reference to fig. 5 and 7, fig. 7 is a further cross-sectional view taken along line M-M' of fig. 5. The present embodiment provides a display device 200: in the direction that the display area AA points to the step area 3, the optical adhesive layer 5 includes a main optical adhesive part 51 and an extended optical adhesive part 52, the orthographic projection of the main optical adhesive part 51 on the plane where the cover plate 1 is located in the orthographic projection of the display area AA on the plane where the cover plate 1 is located, and the orthographic projection of the extended optical adhesive part 52 on the plane where the cover plate 1 is located in the orthographic projection of the non-display area BB on the plane where the cover plate 1 is located; the support member 4 includes an at least partially elongated optical glue portion 52.
It can be understood that the display device 200 provided in this embodiment is provided with the extended optical cement portion 52 at the position corresponding to the non-display area BB, and meanwhile, since the supporting member 4 is located at the position of the step area 3 corresponding to the non-display area BB, a part of the extended optical cement portion 52 can be reused as a part of the supporting member 4 to play a role in buffering, so as to avoid the occurrence of cracking due to stress concentration at the peripheral edge of the display device 200, and further improve the impact resistance and drop resistance of the display device 200. Further, the existing film layer inside the display device 200 is reused as a part of the supporting member 4, which is beneficial to reducing the process difficulty of the supporting member 4, reducing the process steps, and improving the manufacturing process of the display device 200. In some alternative embodiments, reference is continued to fig. 5 and 7. The main optical adhesive portion 51 and the extended optical adhesive portion 52 in the display device 200 provided in this embodiment may be arranged in a segmented manner, that is, there is a distance between the main optical adhesive portion 51 and the extended optical adhesive portion 52, which may be beneficial to controlling the thickness of the extended optical adhesive portion 52 in the direction perpendicular to the display device 200, and meanwhile, because there is a distance between the main optical adhesive portion 51 and the extended optical adhesive portion 52, operations such as thermal curing are required in the subsequent manufacturing process of the display device 200, and the main optical adhesive portion 51 in the display area AA may not be affected simultaneously when the extended optical adhesive portion 52 expands with heat and contracts with cold, which may be beneficial to improving the display quality of the display device 200.
In some alternative embodiments, with continued reference to fig. 5 and 8, fig. 8 is a further cross-sectional view taken along line M-M' of fig. 5. In the display device 200 provided in this embodiment, the main optical adhesive portion 51 and the extended optical adhesive portion 52 are integrally formed, and further, the optical adhesive portion 51 and the extended optical adhesive portion 52 can be made of the same material and integrally formed at the same time, so that the manufacturing of the optical adhesive layer 5 can be simplified, and separate arrangement is not required. Meanwhile, as part of the extended optical adhesive part 52 can be reused as a part of the supporting member 4 to play a role in buffering, the display device 200 is prevented from being broken due to stress concentration at the peripheral edges, the impact resistance and drop resistance of the display device 200 are improved, the supporting member 4 and the optical adhesive layer 5 can be further manufactured at the same time, and the process of the display device 200 can be further simplified.
In some alternative embodiments, referring to fig. 9 and 10, fig. 9 is a schematic structural diagram of another display device provided by the present invention, and fig. 10 is a cross-sectional view taken along W-W' in fig. 9. In the display device 200 provided in the present embodiment, the main optical adhesive layer 5 includes the seam line 6, an orthogonal projection of the seam line 6 on the plane of the cover plate 1 is located in the light shielding region 12, and an orthogonal projection of the seam line 6 on the plane of the cover plate 1 is not overlapped with an orthogonal projection of the support member 4 on the plane of the cover plate 1.
It is understood that the present embodiment provides the display device 200 in which the optical cement layer 5 at the position corresponding to the non-display area BB is provided with the sewing line 6. Wherein, the line 6 of riding can be the single dotted line type of penetrating, makes to form certain gap or breach between main optics glue portion 51 and the extension optics glue portion 52 in the optics glue film 5, can prevent to need to carry out operations such as thermosetting in the follow-up manufacture process of display device 200, can not influence main optics glue portion 51 in the display area AA simultaneously when leading to extension optics glue portion 52 expend with heat and contract with cold, and then can be favorable to improving display device 200's display quality.
Alternatively, referring to fig. 9 and 11, fig. 11 is a further cross-sectional view taken along line W-W' of fig. 9. The display device 200 provided in the present embodiment includes the straddling line 6 in the extended optical portion 52, which can prevent the portion of the extended optical portion 52 near the display area AA from expanding with heat and contracting with cold, and further improve the display quality of the display device 200.
Optionally, with continued reference to fig. 9 to fig. 11, the display panel 2 of the display device 200 further includes an upper polarizer 23, the upper polarizer 23 is located on a side of the opposite substrate 22 away from the array substrate 21, a distance is provided between a first side edge of the upper polarizer 23 away from the display area AA and a second side edge of the opposite substrate 22 away from the display area AA in a direction along the display area AA toward the non-display area BB, and an orthogonal projection of the seam line 6 on the plane where the cover plate 1 is located coincides with an orthogonal projection of the first side edge of the upper polarizer 23 on the plane where the cover plate 1 is located. Equivalently, the seam line 6 is arranged at the edge position of the upper polarizer 23 far away from the display area AA, so that the accurate alignment of the position of the seam line 6 is facilitated, a certain distance between the seam line 6 and the display area AA can be ensured, the optical adhesive layer 5 at the position of the non-display area BB is further prevented from being affected by the thermal expansion and contraction of the optical adhesive layer 5 at the corresponding position of the display area AA, and the display quality of the display device 200 is improved.
In some alternative embodiments, with continued reference to fig. 5 and 12, fig. 12 is a further cross-sectional view taken along line M-M' of fig. 5. The present embodiment provides a display device 200 in which the side of the step area 3 near the cover plate 1 includes a photosensitive adhesive 7. The supporting member 4 further comprises a photosensitive adhesive 7, the photosensitive adhesive 7 is located on a side of the optical adhesive layer 5 away from the cover plate 1, and an orthographic projection of the optical adhesive layer 5 in the supporting member 4 on a plane where the cover plate 1 is located at least partially overlaps with an orthographic projection of the photosensitive adhesive 7 on a plane where the cover plate 1 is located.
It can be understood that, in the prior art, the array substrate 21 at the position corresponding to the step area 3 has a plurality of signal lines (not shown in the figure) and circuits (not shown in the figure), and then the photosensitive adhesive 7 is disposed on the array substrate 21 at the position corresponding to the step area 3 for protecting the circuits and the signal lines on the array substrate 21, and meanwhile, since the photosensitive adhesive 7 is also located at the step area 3, the photosensitive adhesive 7 can be reused as part of the supporting member 4, that is, it can be further understood that the supporting member 4 includes the optical adhesive layer 5 and the supporting member 4 in the direction perpendicular to the display device 200 for supporting the array substrate 21 and the cover plate 1 at the position corresponding to the step area 3. Since the optical adhesive layer 5 and at least a portion of the supporting member 4 can both utilize the film layer in the prior art, or can be formed integrally with the film layer in the prior art, the process difficulty of the supporting member 4 can be reduced, the process steps can be reduced, and the manufacturing process of the display device 200 can be improved. .
In some alternative embodiments, with continued reference to fig. 5 and 13, fig. 13 is a further cross-sectional view taken along line M-M' of fig. 5. The display device 200 provided in this embodiment further includes a protection film 8, the protection film 8 is located on a side of the optical adhesive layer 5 away from the cover plate 1, and an orthogonal projection of the protection film 8 on a plane of the cover plate 1 is located within an orthogonal projection of a portion of the optical adhesive layer 5 corresponding to the step area 3 on the plane of the cover plate 1.
It can be understood that, before the optical adhesive layer 5 is attached to the cover plate 1 and the display panel 2, two opposite sides respectively include a base film (not shown in the figure) and a protective film 8, the base film can be removed to attach the optical adhesive layer 5 to the cover plate, the protective film 8 is partially removed, the protective film 8 at a position corresponding to the non-display area BB is retained, and the protective film 8 is reused as a part of the supporting member 4 to support the cover plate 1 at a position corresponding to the step area 3 and the array substrate 21 of the display panel 2, so as to avoid the fracture caused by stress concentration at the four peripheral edges of the display device 200, and further improve the impact resistance and the drop resistance of the display device 200. Further, the existing film layer inside the display device 200 is reused as a part of the supporting member 4, which is beneficial to reducing the process difficulty of the supporting member 4, reducing the process steps, and improving the manufacturing process of the display device 200.
In some alternative embodiments, with continued reference to fig. 5 and 14, fig. 14 is a further cross-sectional view taken along line M-M' of fig. 5. The display panel 2 of the display device 200 provided in this embodiment further includes a counter substrate 22 disposed opposite to the array substrate 21, wherein the counter substrate 22 is located on a side of the array substrate 21 close to the cover plate 1; the side of the opposite substrate 22 close to the step area 3 comprises a first distance d between the orthographic projection of the plane of the cover plate 1 and the orthographic projection of the side of the protective film 8 close to the display area AA, wherein d is larger than or equal to 0.
It can be understood that, since it is generally necessary to provide an upper polarizer 23 on the side of the opposite substrate 2 away from the array substrate 1, the upper polarizer is used for analyzing the polarized light after the liquid crystal electric modulation, so as to generate the contrast and generate the display picture. In the direction pointing to the non-display area BB along the display area AA, a distance is formed between a first side edge of the upper polarizer 23, which is far away from the display area AA, and a second side edge of the opposite substrate 22, which is far away from the display area AA, so that when the thickness of the protective film 8 is greater than that of the upper polarizer 23, the protective film 8 can be prevented from being blocked by the opposite substrate 2 and cannot be attached to the upper polarizer 23, and a first distance d is formed between the orthographic projection of one side of the opposite substrate 22, which is close to the step area 3, on the plane where the cover plate 1 is located and the orthographic projection of one side of the protective film 8, which is close to the display area AA, on the plane; the problem that the cover plate 1 cannot be attached to the display panel 2 during attachment can be avoided, and subsequent box-forming manufacture of the display device 200 is facilitated. Preferably, an orthographic projection of one side of the protective film 8 close to the display area AA on the plane of the cover plate 1 may coincide with an orthographic projection of one side of the opposite substrate 22 close to the step area 3 on the plane of the cover plate 1. The specific thickness and material of the protective film 8 are not specifically required, and the protective film can be set according to actual conditions, and is not described in detail below.
In some alternative embodiments, referring to fig. 15 to 17, fig. 15 is a schematic structural diagram of another display device provided by the present invention, fig. 16 is a partially enlarged view of a step region in fig. 15, and fig. 17 is a cross-sectional view taken along a direction U-U' in fig. 15. The display device 200 provided by this embodiment further includes a flexible printed circuit 9, the step area 3 includes a binding area 31, the flexible printed circuit 9 is bound in the binding area 31, the flexible printed circuit 9 includes a first flat part 91, a bending part 92 and a second flat part 93, the bending part 92 is located between the first flat part 91 and the second flat part 93, the first flat part 91 is attached to the side of the display panel 2 close to the cover plate 1, and the second flat part 93 is bent to the side of the display panel 2 away from the cover plate 1 through the bending part 92; in the direction in which the display area AA points to the step area 3, the shortest distance between the side of the bending portion 92 away from the display area AA and the side of the cover plate 1 away from the display area AA is a, and the shortest distance between the side of the support member 4 away from the display area AA and the side of the cover plate 1 away from the display area AA is b, where a is greater than 0 and less than or equal to b.
It can be understood that, a side of the supporting member 4 away from the display area AA needs to be limited within a certain range, and since the edge position of the non-display area BB of the display device 200 away from the display area AA needs to be subjected to subsequent process processes such as packaging, and the corresponding position needs to be reserved, the embodiment is limited in the direction in which the display area AA points to the step area 3, the shortest distance between a side of the bending portion 92 away from the display area AA and a side of the cover plate 1 away from the display area AA is a, and the shortest distance between a side of the supporting member 4 away from the display area AA and a side of the cover plate 1 away from the display area AA is b, where 0 < a ≦ b. The quality of the subsequent display device 200 can be ensured.
Optionally, due to errors in the manufacturing process of the display device 200, it is further required to define the arrangement of the supporting member 4, in a direction pointing to the non-display area BB along the display area AA, the supporting member 4 includes a first side 41 close to the display area AA, the cover plate 1 includes a second side 13 far from the display area AA, and a distance between an orthographic projection of the first side 41 on the plane of the display panel 2 and an orthographic projection of the second side 13 on the plane of the display panel 2
Wherein c1 is the distance between the orthographic projection of the side of the counter substrate 22 away from the display area AA on the plane of the display panel 2 and the orthographic projection of the side of the cover plate away from the display area AA on the plane of the display panel 2, e is the fitting tolerance of the cover plate 1, f is the fitting tolerance of the optical adhesive layer 5, and g is the cutting tolerance of the protective film 8. The position relation between the supporting member 4 and the opposite substrate 22 is further limited, so that the problem of non-bonding when the cover plate 1 and the display panel 2 are bonded can be avoided, and further the subsequent box-forming manufacture of the display device 200 is facilitated.
Optionally, the display device 200 further includes a backlight module BLU, the backlight module BLU is located on one side of the display panel 2 away from the cover plate 1, and one side of the backlight module BLU away from the display panel 2 is provided with a positioning Mark; further, in the direction pointing to the non-display area BB along the display area AA, the supporting member 4 includes a third side edge 42 far from the display area AA, and a distance between an orthographic projection of the third side edge 42 on the plane of the display panel 2 and an orthographic projection of the second side edge 13 on the plane of the display panel 2
Wherein a is the shortest distance between the side of the bending portion 92 away from the display area AA and the side of the cover plate 1 away from the display area AA, and is a, l is the shortest distance between the orthographic projection of the positioning Mark of the backlight module BLU on the plane of the display panel 2 and the orthographic projection of the second flat portion 93 close to the positioning Mark on the plane of the display panel 2 in the direction that the display area AA points to the non-display area BB, h is the fitting tolerance of the display panel 2 and the backlight module BLU, m is the position tolerance of the positioning Mark, i is the appearance tolerance of the backlight module BLU, k is the manufacturing tolerance of the optical adhesive layer 5, f is the fitting tolerance of the optical adhesive layer 5, n is the appearance tolerance of the cover plate 1, and e is the fitting tolerance of the cover plate 1. Since the edge position of the non-display area BB of the display device 200, which is far from the display area AA, needs to be subjected to subsequent process steps such as packaging, a corresponding position needs to be reserved, and thus a distance d2 between the orthographic projection of the fifth side 43 of the supporting member 4 on the plane of the display panel 2 and the orthographic projection of the second side 13 of the cover plate 1 on the plane of the display panel 2 is defined, and meanwhile, the supporting member 4 can be prevented from extending out of the area covered by the cover plate 1, which affects the quality of the display device 200.
It is understood that the display device 200 further includes a driving chip (not shown), and the driving chip includes two configurations: chip On Glass hereinafter referred to as COG and Chip On FPC hereinafter referred to as COF, wherein the COG is formed by directly arranging a driving Chip On a Glass substrate of the array substrate 22; the COF form is to dispose the driving chip on the flexible circuit board 9, and the above definition of the relation of the supporting member 4 is applicable to the COG and COF forms.
Alternatively, with continued reference to FIGS. 15, 14 and 18, FIG. 18 is a further cross-sectional view taken along U-U' of FIG. 15. The display device 200 in the present embodiment: the array substrate further comprises a driving chip IC, wherein the driving chip IC is positioned in the step area 3 of the array substrate 22; the step area 7 further comprises non-binding areas 32, in the extending direction of the driver chip IC, the non-binding areas 32 are located at two sides of the binding area 31, and the orthographic projection of the non-binding areas 32 on the plane where the cover plate 1 is located does not overlap with the orthographic projection of the flexible circuit board 9 on the plane where the cover plate 1 is located; it is understood that the driving chip IC is directly disposed at the position of the array substrate 22 in the present embodiment, i.e. in the form of COG, i.e. the above definition of the relation of the isolation layer is applicable to the form of COG.
The supporting member 4 comprises a fifth side 43, the fifth side 43 is connected to the third side 42, and the distance between the orthographic projection of the fifth side 43 of the supporting member 4 on the plane of the display panel 2 and the orthographic projection of the second side 13 of the cover plate 1 on the plane of the display panel 2 is from the display area AA to the non-display area BB
Wherein z is the shortest distance between the orthographic projection of the backlight module BLU on the plane where the display panel 2 is located and the orthographic projection of the second side edge 13 of the cover plate 1 on the plane where the display panel 2 is located in the direction of pointing to the non-display area BB along the display area AA, h is the fitting tolerance of the display panel 2 and the backlight module BLU, n is the appearance tolerance of the cover plate 1, i is the appearance tolerance of the backlight module BLU, k is the manufacturing tolerance of the optical adhesive layer 5, f is the fitting tolerance of the optical adhesive layer 5, and e is the fitting tolerance of the cover plate 1. Since the edge position of the non-display area BB of the display device 200, which is far from the display area AA, needs to be subjected to subsequent process processes such as packaging, a corresponding position needs to be reserved, and a distance d2 between the orthographic projection of the fifth side 43 of the supporting member 4 on the plane of the display panel 2 and the orthographic projection of the second side 13 of the cover plate 1 on the plane of the display panel 2 is further defined, and meanwhile, the supporting member 4 can be prevented from extending out of the area covered by the cover plate 1, which affects the quality of the display device 200.
Optionally, the width of the support member 4 in the orthographic projection of the plane of the cover plate 1
Wherein p is the length of the orthographic projection of the backlight module BLU at the position corresponding to the step area 3 on the plane where the cover plate 1 is located, k is the manufacturing tolerance of the optical adhesive layer 5, f is the fitting tolerance of the optical adhesive layer 5, h is the fitting tolerance of the display panel 2 and the backlight module BLU, and i is the appearance tolerance of the backlight module BLU. On the upper partThe limitation of the relation is suitable for COG and COF forms, the invention does not make specific requirements on the arrangement form of the driving chip and can be arranged according to the actual situation.
Referring to fig. 19 and 20, fig. 19 is a schematic flow chart of a manufacturing method of a display device according to the present invention, and fig. 20 is a flow chart of a structure of fig. 19.
Step S101, providing a cover plate 1, wherein the cover plate 1 comprises a light-transmitting area 11 and a light-shielding area 12 surrounding the light-transmitting area 11;
step S102, providing a display panel 2, wherein the display panel 2 comprises an array substrate 21, the array substrate 21 comprises a display area AA and a non-display area BB surrounding the display area AA, the display area QQ corresponds to the light-transmitting area 11, the non-display area BB corresponds to the light-shielding area 12, and the non-display area BB comprises a step area 3;
step S103, providing a mother optical adhesive layer 50, wherein the mother optical adhesive layer 50 comprises a bottom film 501 and an optical adhesive layer 5,
step S104, forming a support member 4 in the step area 3, and forming at least part of the support member 4 on the optical adhesive layer 5 at the position corresponding to the step area 3 in the direction vertical to the plane of the display panel 2; removing the bottom film 501 to enable the optical adhesive layer 5 to be attached to the cover plate 1; the side of the optical adhesive layer 5 far from the cover plate 1 is attached to the display panel 2, so that the supporting member 4 is located on the side of the step area 3 close to the cover plate 1, and the supporting member 4 is clamped between the shading area 12 and the step area 3.
It can be understood that, in the prior art, the optical adhesive layer 5 needs to be disposed to attach the cover plate 1 and the display panel 2, and the present invention may be disposed to at least partially overlap an orthographic projection of the optical adhesive layer 5 on a plane of the cover plate with an orthographic projection of the step area 3 on a plane of the cover plate, that is, the optical adhesive layer is disposed at a position corresponding to the step area 3, and the display device 200 of the present invention includes the supporting member 4, and the supporting member 4 is sandwiched between the light shielding area 12 and the step area 3, so that when the display device 200 is subjected to an external force, the supporting member 4 may play a role of buffering, so as to prevent the display device 200 from being cracked due to stress concentration at the peripheral edges of the display device 200, and further improve the impact resistance and drop resistance of the. Meanwhile, the supporting member 4 is clamped between the shading area 12 and the step area 3, and a part of the optical adhesive layer is arranged at the position corresponding to the step area 3, so that a part of the optical adhesive layer 5 at the position corresponding to the step area 3 can be reused as a part of the supporting member 4, which is beneficial to reducing the process difficulty of the supporting member 4, reducing the process steps, and improving the manufacturing process of the display device 200. .
In some alternative embodiments, please refer to fig. 21, fig. 19 is a flowchart of still another structure of fig. 19.
The step S103 further includes a mother protection layer 80, where the mother protection layer 80 is located on a side of the optical glue layer 5 away from the bottom film 501;
step S104 further includes: cutting the mother protective layer 80, reserving an area corresponding to the step area 3 to form a protective film 8, and enabling the orthographic projection of the protective film 8 on the plane of the cover plate 1 to be positioned in the orthographic projection of the optical adhesive layer 5 on the position corresponding to the step area 3 on the plane of the cover plate 1; the protective layer 8 and the optical adhesive layer 5 at the corresponding position of the step area 3 form at least part of the supporting member 4 in the direction vertical to the plane of the display panel 2.
It can be understood that, optics glue film 5 is before laminating with apron 1 and display panel 2, the both sides of relative setting include basement membrane 501 and protection film 8 respectively, the use can get rid of basement membrane 501 and make optics glue film 5 laminate with apron 1 mutually, detach the part with protection film 8, keep the protection film 8 of non-display area BB corresponding position department, and then reuse protection film 8 as a part of supporting member 4, an array substrate 21 for supporting apron 1 and display panel 2 of step district 3 corresponding position department, avoid display device 200 edge stress concentration all around and produce and break, and then can improve display device 200's shock resistance and anti falling ability. Furthermore, the existing film layer inside the display device 200 is reused as a part of the supporting member 4, and the supporting member 4 is not required to be additionally arranged, so that the process of the supporting member 4 can be simplified.
In some alternative embodiments, please refer to fig. 22, fig. 22 is a flowchart of still another structure of fig. 19.
Before step 104, forming a photosensitive adhesive 7 on a side of the step area 3 close to the cover plate 1, and curing the photosensitive adhesive 7 by using ultraviolet light, wherein the cured photosensitive adhesive 7 forms at least part of the support member 4 in a direction perpendicular to the plane of the display panel 2.
It can be understood that, in the prior art, the array substrate 21 at the position corresponding to the step area 3 has a plurality of signal lines (not shown in the figure) and circuits (not shown in the figure), and then the photosensitive adhesive 7 is disposed on the array substrate 21 at the position corresponding to the step area 3 for protecting the circuits and the signal lines on the array substrate 21, and meanwhile, since the photosensitive adhesive 7 is also located at the step area 3, the photosensitive adhesive 7 can be reused as a part of the supporting member 4, that is, it can be further understood that the supporting member 4 includes the optical adhesive layer 5 and the supporting member 4 in the direction perpendicular to the display device 200 for supporting the array substrate 21 and the cover plate 1 at the position corresponding to the step area 3. Since the optical adhesive layer 5 and at least a portion of the supporting member 4 can both utilize the film layer in the prior art, or can be formed integrally with the film layer in the prior art, the process difficulty of the supporting member 4 can be reduced, the process steps can be reduced, and the manufacturing process of the display device 200 can be improved.
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 advantages:
compared with the prior art, one side of the step area, which is close to the cover plate, comprises a supporting member, and the supporting member is clamped between the shading area and the step area; the display device further comprises an optical adhesive layer, wherein the optical adhesive layer is positioned between the cover plate and the display panel; the support member comprises a part of the optical glue layer at a position corresponding to the step area. The optical adhesive layer at the step area position is reused as part of the supporting member, when the display panel is subjected to external force, the supporting member can play a role in buffering, stress concentration at the peripheral edges of the display panel is avoided, and therefore cracking of the display panel is avoided, and the shock resistance and the falling resistance of the product can be improved; meanwhile, the optical adhesive layer is at least reused as part of the supporting member, so that the process difficulty of the supporting member can be reduced, and the process steps can be reduced.
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 (11)
1. The display device is characterized by comprising a cover plate and a display panel which are oppositely arranged, wherein the cover plate is positioned on the light emergent side of the display panel and comprises a light-transmitting area and a light-shading area surrounding the light-transmitting area;
the display panel comprises an array substrate, the array substrate comprises a display area and a non-display area surrounding the display area, the display area corresponds to the light-transmitting area, the non-display area corresponds to the light-shielding area, the non-display area comprises a step area, one side, close to the cover plate, of the step area comprises a supporting member, and the supporting member is clamped between the light-shielding area and the step area;
the display device further comprises an optical adhesive layer, wherein the optical adhesive layer is positioned between the cover plate and the display panel;
the support member comprises a part of the optical glue layer at a position corresponding to the step area.
2. The display device according to claim 1, wherein in a direction in which the display area points to the step area, the optical adhesive layer includes a main optical adhesive portion and an extended optical adhesive portion, an orthogonal projection of the main optical adhesive portion on a plane of the cover plate is located within an orthogonal projection of the display area on the plane of the cover plate, and an orthogonal projection of the extended optical adhesive portion on the plane of the cover plate is located within an orthogonal projection of the non-display area on the plane of the cover plate;
the support member includes at least a part of the elongated optical cement portion.
3. The display device according to claim 2, wherein the main optical cement portion and the extended optical cement portion are integrally formed.
4. The display device according to claim 1,
the main optical glue layer comprises a seam line, the orthographic projection of the seam line on the plane of the cover plate is positioned in the shading area, and the orthographic projection of the seam line on the plane of the cover plate is not overlapped with the orthographic projection of the supporting member on the plane of the cover plate.
5. The display device according to claim 1, wherein the support member further comprises a protective film, the protective film is located on a side of the optical adhesive layer away from the cover plate, and an orthogonal projection of the protective film on a plane of the cover plate is located within an orthogonal projection of a portion of the optical adhesive layer at a position corresponding to the step area on the plane of the cover plate.
6. The display device according to claim 5, wherein the display panel further comprises an opposite substrate disposed opposite to the array substrate, the opposite substrate being located on a side of the array substrate adjacent to the cover plate;
the orthographic projection of one side, close to the step area, of the opposite substrate on the plane where the cover plate is located and the orthographic projection of one side, close to the display area, of the protective film on the plane where the cover plate is located comprise a first distance d, and d is larger than or equal to 0.
7. The display device according to claim 1, wherein a side of the stepped region adjacent to the cover plate includes a photosensitive paste,
the supporting member further comprises the photosensitive adhesive, the photosensitive adhesive is located on one side, away from the cover plate, of the optical adhesive layer, and an orthographic projection of the optical adhesive layer in the supporting member on the plane where the cover plate is located and an orthographic projection of the photosensitive adhesive on the plane where the cover plate is located are at least partially overlapped.
8. The display device according to claim 1, further comprising a flexible wiring board,
the step area comprises a binding area, the flexible circuit board is bound in the binding area, the flexible circuit board comprises a first flat part, a bent part and a second flat part, the bent part is located between the first flat part and the second flat part, the first flat part is attached to one side, close to the cover plate, of the display panel, and the second flat part is bent to one side, far away from the cover plate, of the display panel through the bent part;
in the direction in which the display area points to the step area, the shortest distance between one side of the bending part, which is far away from the display area, and one side of the cover plate, which is far away from the display area, is a, the shortest distance between one side of the support member, which is far away from the display area, and one side of the cover plate, which is far away from the display area, is b, wherein a is greater than 0 and is not greater than b.
9. A method for manufacturing a display device, comprising:
providing a cover plate, wherein the cover plate comprises a light-transmitting area and a light-shielding area surrounding the light-transmitting area;
providing a display panel, wherein the display panel comprises an array substrate, the array substrate comprises a display area and a non-display area surrounding the display area, the display area corresponds to the light-transmitting area, the non-display area corresponds to the light-shielding area, and the non-display area comprises a step area;
providing a mother optical adhesive layer, wherein the mother optical adhesive layer comprises a bottom film and an optical adhesive layer,
forming a support member in the step area, and forming at least part of the support member on the optical adhesive layer at the position corresponding to the step area in the direction vertical to the plane of the display panel;
removing the bottom film to enable the optical adhesive layer to be attached to the cover plate;
and attaching one side of the optical adhesive layer, which is far away from the cover plate, to the display panel, so that the supporting member is positioned on one side of the step area, which is close to the cover plate, and the supporting member is clamped between the shading area and the step area.
10. The method of manufacturing according to claim 9,
the providing of the mother optical adhesive layer further comprises a mother protective layer, and the mother protective layer is positioned on one side, far away from the bottom film, of the optical adhesive layer;
cutting the mother protective layer, reserving an area corresponding to the step area to form a protective film, and enabling the orthographic projection of the protective film on the plane of the cover plate to be located in the orthographic projection of the optical adhesive layer on the position corresponding to the step area on the plane of the cover plate;
in the direction perpendicular to the plane of the display panel, the protective layer and the optical adhesive layer at the corresponding position of the step area are combined to form at least part of the supporting member.
11. The method according to claim 9, wherein a photosensitive paste is formed on a side of the step area adjacent to the cover plate, the photosensitive paste is cured by ultraviolet light, and the cured photosensitive paste forms at least a portion of the supporting member in a direction perpendicular to a plane of the display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010582937.XA CN111766729A (en) | 2020-06-23 | 2020-06-23 | Display device and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010582937.XA CN111766729A (en) | 2020-06-23 | 2020-06-23 | Display device and manufacturing method thereof |
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| CN111766729A true CN111766729A (en) | 2020-10-13 |
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| CN202010582937.XA Withdrawn CN111766729A (en) | 2020-06-23 | 2020-06-23 | Display device and manufacturing method thereof |
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| CN (1) | CN111766729A (en) |
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