CN109559639B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN109559639B CN109559639B CN201811446345.4A CN201811446345A CN109559639B CN 109559639 B CN109559639 B CN 109559639B CN 201811446345 A CN201811446345 A CN 201811446345A CN 109559639 B CN109559639 B CN 109559639B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
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Abstract
The invention discloses a display panel and a display device, wherein the display panel comprises: the flexible substrate comprises a display area and a bending area positioned on at least one side of the display area; the flexible substrate in bending zone is to keeping away from the lateral bending of display panel's play plain noodles, the inboard of buckling in bending zone is provided with the support module, the first surface and the flexible substrate of support module bond through first tie coat, the first surface is circular arc surface, the radius on first surface equals the radius of buckling in bending zone, and then the radius of buckling that can accurate control bending zone, the overstretching of being qualified for the next round of competitions when preventing to buckle flexible substrate, and the support module can support the protection to bending zone, prevent that bending zone from appearing the dead book, avoid bending zone's line fracture, improve display panel's reliability.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the development of display technology, the narrow bezel and high screen ratio of the display panel has become a great trend.
In order to realize the narrow frame and high screen ratio of the display panel, the non-display area of the display panel needs to be bent towards the side opposite to the light-emitting surface. In the prior art, when the non-display area is bent, the bending radius is not controllable, the risk of undesired stretching of the screen body exists, and the bending area cannot keep a fixed bending state, so that metal wiring in the bending area is easy to break, and the reliability of the display panel is reduced.
Disclosure of Invention
The invention provides a display panel and a display device, which can accurately control the bending radius of a non-display area when the non-display area is bent, avoid the unexpected stretching of the display panel, keep the bending area in a fixed bending state and improve the reliability of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including:
the flexible substrate comprises a display area and a bending area positioned on at least one side of the display area;
the flexible substrate of the bending area is bent towards one side far away from the light-emitting surface of the display panel, a support module is arranged on the bending inner side of the bending area, the first surface of the support module is bonded with the flexible substrate through a first bonding layer, the first surface is an arc-shaped surface, the radius of the first surface is equal to the bending radius of the bending area, the support module is arranged on the bending inner side of the bending area of the flexible substrate and comprises an arc-shaped surface, the arc-shaped surface is bonded with the flexible substrate of the bending area through the first bonding layer, so that when the flexible substrate is bent, the radius of the bending area of the flexible substrate is the same as the radius of the arc-shaped surface, the bending radius of the bending area can be accurately controlled, the overstretching of outgoing lines when the flexible substrate is bent can be prevented, the support module can support and protect the bending area, the dead fold of the bending area can be prevented, and the breakage of the outgoing lines of the bending area can be avoided, the reliability of the display panel is improved.
The shape of the cross section of the support module along the direction perpendicular to the flexible substrate is semicircular or semicircular, and the shape of the cross section of the support module along the direction perpendicular to the flexible substrate is semicircular, so that the support module can be adapted to the shape of the inner side of the bending area, the support module can well support the bending area, and the bending area can keep a stable bending radius; the shape of the cross section of the supporting module along the direction perpendicular to the flexible substrate is semicircular, so that the size of the supporting module is smaller while the bending area is supported, the supporting module is lighter and thinner, and unbalance of two sides of the display panel cannot be caused when the bending area exists on one side of the flexible substrate, and user experience cannot be influenced.
The supporting module comprises a substrate and a plurality of bulges arranged on the substrate; the bottom surface of the base is an arc-shaped surface, the second bonding layer is arranged between every two adjacent bulges, so that the bending area of the flexible substrate can keep the same radius as the arc-shaped surface when being bent, the bending radius of the bending area is controllable, and the situation of unexpected stretching of the flexible substrate cannot occur. And, because be provided with the second tie coat between the adjacent arch for the bending region of flexible substrate is buckling the back, and a plurality of archs bond each other and form fixed shape, make the convex surface of the bottom surface of a plurality of bellied basement be stable in structure, and then can carry out powerful support to flexible bending region, prevent the phenomenon of turning over soon. And when the supporting module comprises the substrate and the plurality of protrusions arranged on the substrate, the supporting module can be bonded on the inner side of the region to be bent of the flexible substrate before the bending process of the flexible substrate, so that the bending process is more convenient.
The thickness of the substrate of the supporting module is smaller than or equal to 0.1 millimeter, so that the supporting module can be well attached to the flexible substrate, the thickness of the bending area cannot be excessively increased, and the implementation of the bending process is not affected.
Wherein, every arch is isosceles triangle along the cross sectional shape of perpendicular to flexible substrate direction, the crossing point of the two waists of isosceles triangle points to the bending center of bending zone, make the bending zone of flexible substrate buckle the back, a plurality of archs can form along the cross-section is semicircular arc-shaped structure on the perpendicular to flexible substrate direction, the radius of this semicircular arc-shaped structure is fixed, and the inboard bonding in bending zone of a plurality of bellied basement and flexible substrate, then the radius of bending zone of flexible basement is fixed, and then when buckling flexible substrate, the radius of buckling that can the accurate control flexible substrate buckle. And the semicircular arc-shaped structure formed after bending can support the bending area, so that the metal wiring is prevented from being broken due to dead folding points in the bending area.
The cross section of each protrusion in the direction perpendicular to the flexible substrate is isosceles trapezoid, the waist of the isosceles trapezoid points to the bending center of the bending area, so that after the flexible substrate is bent, the base and the plurality of protrusions arranged on the base can form a semicircular arc-shaped structure in the direction perpendicular to the flexible substrate, the cross section of the arc-shaped structure is semicircular, the radius of the arc-shaped structure is fixed, and the bending radius of the flexible substrate can be accurately controlled when the flexible substrate is bent. And the arc-shaped structure formed after bending can support the bending area, so that the metal wiring is prevented from being broken due to dead folding points in the bending area. And the cross section of the protrusion in the direction perpendicular to the flexible substrate is in the shape of an isosceles trapezoid, so that the bending radius of the bending area of the flexible substrate can be accurately controlled on the basis of saving the supporting module material, the bending area is supported, and the occurrence of dead folding and line breakage is prevented.
The supporting module is made of polyethylene terephthalate or polycarbonate, and therefore signal interference between the upper semi-arc surface and the lower semi-arc surface of the bending area of the flexible substrate can be prevented.
The flexible substrate further comprises a binding area, the bending area is connected with the binding area and the display area, and the binding area is opposite to the display area;
the side, away from the light-emitting surface of the display panel, of the flexible substrate comprises at least one supporting layer, the supporting layer is arranged between the display area and the binding area, and the supporting module is abutted against the supporting layer, so that when a bending process is carried out, the supporting module is fixed at a fixed position and keeps unchanged, and further when the flexible substrate is bent along the first surface of the supporting module, a fixed bending radius can be kept, and the flexible substrate is prevented from being excessively stretched; and, after buckling, can support the bending zone better, prevent the phenomenon of dead fold.
Wherein, be provided with the third tie coat between support module and the supporting layer, support module and supporting layer pass through the third tie coat and bond, can be so that support module is firmly fixed between supporting layer and flexible base plate to support the district of buckling of flexible base plate more firmly, can make the district of buckling of flexible base plate keep the fixed radius of buckling more, and make whole display panel's structure compacter firm.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel provided in the first aspect. Wherein the display panel includes: the flexible substrate comprises a display area and a bending area positioned on at least one side of the display area; the flexible substrate in the bending area is bent towards one side of the light-emitting surface far away from the display panel, a supporting module is arranged on the bending inner side of the bending area, a first surface of the supporting module is bonded with the flexible substrate through a first bonding layer, the first surface is an arc-shaped surface, and the radius of the first surface is equal to the bending radius of the bending area. The support module is arranged on the bending inner side of the bending area of the flexible substrate and comprises an arc-shaped surface, the arc-shaped surface is bonded with the flexible substrate of the bending area through a first bonding layer, so that when the flexible substrate is bent, the radius of the bending area of the flexible substrate is the same as that of the arc-shaped surface, the bending radius of the bending area can be accurately controlled, the flexible substrate is prevented from being excessively stretched when being bent, the support module can support and protect the bending area, dead folding is prevented from occurring in the bending area, the breakage of wiring in the bending area is avoided, and the reliability of the display panel is improved.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a display panel according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a flexible substrate in a state of being flattened before being bent according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a display panel according to another embodiment of the present invention;
fig. 6 is a schematic structural view of a flexible substrate in a state of being flattened before being bent according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of a display panel according to another embodiment of the present invention;
fig. 8 is a schematic structural diagram of a display panel according to another embodiment of the present invention;
fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As described in the background art, in the display panel structure in the prior art, when a non-display area of the display panel is bent, the bending radius is not controllable, there is a risk of undesired stretching of a screen body, and the bending area cannot maintain a fixed bending state, so that metal wires in the bending area are easily broken, and the reliability of the display panel is reduced. The inventor researches and discovers that the reason for the problem is that when the display panel is bent, the bending radius is not controlled, or a plurality of plane supporting layers are arranged on one side of the display panel, which is far away from the light-emitting surface of the display panel, to roughly control the bending radius of the bending, so that the change of the bending radius in the bending process is uncontrollable, and the situation that the display area is excessively stretched due to the bending area during bending can occur, and the display panel is unnecessarily scratched; after the non-display area is bent, the inner side of the bending area is free of support, so that the bending area cannot keep a stable bending radius, even a dead-fold point appears, the bending area usually comprises metal wiring, and the dead-fold point appears in the bending area, which is very easy to cause the metal wiring to break, affects the display effect of the display panel, and reduces the reliability of the display panel.
For the above reasons, the present invention provides a technical solution of a display panel, and fig. 1 is a schematic structural diagram of a display panel provided in an embodiment of the present invention, and referring to fig. 1, the display panel includes:
the display device comprises a flexible substrate 100, wherein the flexible substrate 100 comprises a display area 110 and a bending area 120 positioned on at least one side of the display area 110;
the flexible substrate 100 of the bending region 120 is bent towards a side away from the light emitting surface of the display panel, a support module 200 is disposed at the bending inner side of the bending region 120, a first surface 201 of the support module 200 is bonded to the flexible substrate 100 through a first bonding layer 300, the first surface 201 is an arc surface, and the radius of the first surface 201 is equal to the bending radius of the bending region 120.
The display panel generally includes a display area 110 and a non-display area, and referring to fig. 1, the left side of the dotted line is the display area 110, and the right side of the dotted line is the non-display area. In order to achieve a narrow frame and a high screen ratio of the display panel, the non-display area of the display panel is usually bent to a side away from the light-emitting surface of the display panel. The display panel generally includes a flexible substrate 100 and a display function layer located on one side of the flexible substrate 100, wherein, in the display area 110, the display function layer may include a driving backplane 400 and an Organic Light-Emitting Diode (OLED) structure layer 500, the driving backplane 400 is disposed on the flexible substrate 100, the OLED structure layer 500 is disposed on one side of the driving backplane away from the flexible substrate 100, and the driving backplane may include a thin film transistor array through which the amount of current flowing into each OLED pixel is controlled; the OLED structure layer may include a first electrode, a hole injection layer, a hole transport layer, a light emitting material layer, an electron transport layer, an electron injection layer, and a second electrode disposed from bottom to top, wherein the first electrode may be an anode, and the second electrode may be a cathode. Electrons and holes are injected from the cathode and the anode into the electron injection layer and the hole injection layer, respectively, and migrate to the light-emitting layer through the electron transport layer and the hole transport layer, respectively, which combine to make the light-emitting material emit light.
With continued reference to fig. 1, optionally, a metal trace 600 is disposed on a side of the flexible substrate 100 of the bending region 120 adjacent to the light emitting surface of the display panel. The bending region 120 is located in the non-display region, and is a region where the flexible substrate 100 and the metal trace 600 are bent and deformed. The flexible substrate 100 in the bending region 120 and the metal trace 600 on the side of the flexible substrate 100 close to the light-emitting surface of the display panel are bent towards the side far away from the light-emitting surface of the display panel, the support module 200 is disposed on the bending inner side of the bending region 120, the first surface 201 of the support module 200 is an arc-shaped surface, the radius of the arc-shaped surface is a fixed value, and the arc-shaped surface is tightly attached to the bending inner side of the bending region 120 through the first adhesive layer 300. For example, when the flexible substrate 100 and the metal trace 600 disposed thereon are bent, the support module 200 having the first adhesive layer 300 on the first surface 201 may be disposed at a position corresponding to the bent region 120 of the flattened flexible substrate 100, and the flexible substrate 100 and the metal trace 600 thereon are bent along the support module 200, so that the flexible substrate 100 and the support module 200 in the bent region 120 are tightly adhered together, and a radius of the bent region 120 is a radius of the first surface 201 of the support module 200. By arranging the support module 200 at the inner side of the bending region 120 of the flexible substrate 100, the bending radius of the bending region 120 of the flexible substrate 100 can be accurately controlled, and the situation that the bending region 120 and even the display region 110 are excessively stretched when the flexible substrate 100 is bent is further avoided; moreover, the support module 200 can support the bending region 120 of the flexible substrate 100, so that the bending region 120 can maintain a fixed bending radius, a dead-break point is not generated, the occurrence of a broken trace on one side of the flexible substrate 100 of the bending region 120 is avoided, and a good display effect of the display panel is ensured.
The display panel that this embodiment provided, through the inboard support module that sets up of buckling in flexible substrate bending zone, and support the module and include circular arc surface, this circular arc surface bonds through first tie coat with the flexible substrate in bending zone, when making the flexible substrate buckle, the radius in flexible substrate bending zone is the same with the radius on circular arc surface, and then the radius of buckling that can the accurate control bending zone, the overstretching of being qualified for the next round of competitions when preventing to buckle flexible substrate, and support the module and can support the protection to bending zone, prevent that bending zone from appearing the dead book, avoid bending zone's line fracture, improve display panel's reliability.
On the basis of the above scheme, the embodiment of the invention provides another technical scheme of a display panel.
Fig. 2 is a schematic structural diagram of a display panel according to another embodiment of the present invention. Referring to fig. 1 and 2, in fig. 1 and 2, a display area 110 is on the left side of a dotted line, and a non-display area is on the right side of the dotted line. Alternatively, the support module 200 may have a semicircular or semicircular ring shape in a cross section in a direction perpendicular to the flexible substrate 100.
After the flexible substrate 100 is bent, the cross-sectional shape of the bending region 120 is generally semicircular in the direction perpendicular to the flexible substrate 100, and the cross-sectional shape of the support module 200 along the direction perpendicular to the flexible substrate 100 is semicircular (refer to fig. 1), so that the support module 200 can adapt to the shape of the inner side of the bending region 120, the support module 200 can well support the bending region 120, and the bending region 120 can maintain a stable bending radius.
The shape of the cross section of the supporting module 200 along the direction perpendicular to the flexible substrate 100 is a semicircular ring (refer to fig. 2), and when the bending area 120 is supported, the volume of the supporting module 200 can be smaller, so that the supporting module 200 is lighter and thinner, and when the bending area 120 exists on only one side of the flexible substrate 100, the imbalance of the two sides of the display panel is not caused, and the user experience is not influenced.
Fig. 3 is a schematic structural diagram of a display panel according to another embodiment of the present invention, in fig. 3, a left side of a dotted line is a display area 110, and a right side of the dotted line is a non-display area. Referring to fig. 3, the support module 200 includes a substrate 210 and a plurality of protrusions 220 disposed on the substrate 210; the bottom surface of the substrate 210 is a circular arc-shaped surface, and a second adhesive layer is disposed between adjacent protrusions 220.
For example, when the support module 200 is a structure including the substrate 210 and the plurality of protrusions 220 disposed on the substrate 210, before the flexible substrate 100 is bent, the support module 200 including the substrate 210 and the plurality of protrusions 220 disposed on the substrate 210 may be bound to a side of a region of the flexible substrate 100 to be bent, which is away from a light emitting surface of a display panel, as shown in fig. 4, where fig. 4 is a schematic structural diagram of the flexible substrate provided in an embodiment of the present invention, in a flattened state before bending, for example, the support module 200 is bonded to an inner side of the bending region 120 through the first adhesive layer 300, and then the flexible substrate 100 is bent, after bending, a bottom surface of the substrate 210 of the support module 200 forms an arc-shaped surface, and the arc-shaped surface is bonded to the inner side of the bending region 120 of the flexible substrate 100 through the first adhesive layer 300. When the bending region 120 of the flexible substrate 100 is bent, the bending region 120 of the flexible substrate 100 is gradually bonded to the arc-shaped surface of the support module 200, so that the radius of the bending region 120 of the flexible substrate 100 can be kept the same as that of the arc-shaped surface when the flexible substrate is bent, the bending radius of the bending region 120 is controllable, and the situation of unexpected stretching of the flexible substrate 100 is avoided. Moreover, the second bonding layer 230 is arranged between the adjacent protrusions 220, so that after the bending area 120 of the flexible substrate 100 is bent, the protrusions 220 are bonded with each other to form a fixed shape, the arc-shaped surface of the bottom surface of the base 210 of the protrusions 220 is stable in structure, and further the flexible bending area 120 can be powerfully supported, so that a dead fold phenomenon is prevented, and further the metal wiring arranged in the bending area 120 of the flexible substrate 100 is prevented from being broken. When the supporting module 200 includes the base 210 and the plurality of protrusions 220 disposed on the base 210, the supporting module 200 may be bonded to the inner side of the region to be bent of the flexible substrate 100 before the bending process of the flexible substrate 100, so that the bending process is more convenient.
With continued reference to fig. 3 and 4 based on the above approach, the thickness d of the substrate 210 of the support module 200 is optionally less than or equal to 0.1 mm.
Specifically, when the thickness d of the substrate 210 of the support module 200 is too thick, the thickness of the bending region 120 is increased, so that the bending process is not well implemented, and therefore, the thickness of the substrate 210 of the optional support module 200 is less than or equal to 0.1 mm, which ensures that the support module 200 can be well attached to the flexible substrate 100, and does not excessively increase the thickness of the bending region 120, and does not affect the implementation of the bending process.
With continued reference to fig. 3 and 4, optionally, each protrusion 220 has a cross-sectional shape along a direction perpendicular to the flexible substrate 100, which is an isosceles triangle, and an intersection point of two sides of the isosceles triangle points to the bending center a of the bending region.
The cross section of the protrusion 220 along the direction perpendicular to the flexible substrate 100 is an isosceles triangle, the protrusion 220 includes a first bottom surface 201, a first waist surface 201, and a second waist surface 203, the first bottom surface 201 is bonded to the substrate 210, or the protrusion 220 and the substrate 210 are integrated, the first waist surface 202 and the second waist surface 203 are provided with a second adhesive layer 230, the protrusions 220 can be distributed on the substrate 210 without space, the cross section of each protrusion 220 along the direction perpendicular to the flexible substrate 100 is an isosceles triangle, so that after the flexible substrate 100 is bent, the substrate 210 and the plurality of protrusions 220 arranged on the substrate 210 can form a semicircular arc structure with a semicircular cross section along the direction perpendicular to the flexible substrate 100, the radius of the semicircular arc structure is fixed, and the substrate 210 of the plurality of protrusions 220 is bonded to the inner side of the bending region 120 of the flexible substrate 100, so that the radius of the bending region 120 of the flexible substrate 210 is fixed, and thus, when the flexible substrate 100 is bent, the bending radius of the flexible substrate 100 can be precisely controlled. And the semicircular arc-shaped structure formed after bending can support the bending area 120, so that the metal wiring 600 is prevented from being broken due to dead folding points in the bending area 120.
Fig. 5 is a schematic structural diagram of a display panel according to another embodiment of the present invention, in fig. 5, a left side of a dotted line is a display area 110, and a right side of the dotted line is a non-display area. Referring to fig. 5, each protrusion 220 has a cross-sectional shape in a direction perpendicular to the flexible substrate 100 of an isosceles trapezoid, a waist of the isosceles trapezoid pointing to a bending center a of the bending region.
Fig. 6 is a schematic structural view of a flexible substrate according to another embodiment of the present invention in a state of being flattened before being bent, and referring to fig. 5 and fig. 6, a cross section of each protrusion 220 along a direction perpendicular to the flexible substrate 100 is an isosceles trapezoid, where the protrusion 220 includes a second bottom surface 204, a third waist surface 205, a fourth waist surface 206, a third bottom surface 207, the second bottom surface 204 is bonded to the base 210, or the protrusion 220 and the base 210 are in an integral structure, and the second bonding layer 230 is disposed on the third waist surface 205 and the fourth waist surface 206, so that after the flexible substrate 100 is bent, the base 210 and the plurality of protrusions 220 disposed on the base 210 may form an arc-shaped structure having a semicircular cross section along a direction perpendicular to the flexible substrate 100, a radius of the arc-shaped structure is fixed, and the base 210 of the plurality of protrusions 220 is bonded to an inner side of the bending region 120 of the flexible substrate 100, and a radius of the bending region 120 of the flexible substrate 210 is fixed, and thus, when the flexible substrate 100 is bent, the bending radius of the flexible substrate 100 can be precisely controlled. And the arc-shaped structure formed after bending can support the bending area 120, so that the metal wiring 600 is prevented from being broken due to dead folding points in the bending area 120. The cross section of the protrusion 220 in the direction perpendicular to the flexible substrate 100 is shaped as an isosceles trapezoid, so that the bending radius of the bending area 120 of the flexible substrate 100 can be accurately controlled and the bending area 120 can be supported on the basis of saving the supporting module material, thereby preventing the occurrence of dead folding and wire breakage.
It should be noted that the cross-sectional shape of the above protrusion 220 along the direction perpendicular to the flexible substrate 100 is not limited to the isosceles triangle and the isosceles trapezoid provided in the above embodiments, as long as it is ensured that a stable arc-shaped surface can be formed after bending.
On the basis of the above scheme, the material of the support module 200 is optionally polyethylene terephthalate or polycarbonate.
In order to enable the support module 200 to effectively support the bending region 120 of the flexible substrate 100, a polyethylene terephthalate or polycarbonate material with a certain hardness may be used; moreover, the polyethylene terephthalate or polycarbonate material is an insulating material, which can prevent signal interference between the upper semi-arc surface and the lower semi-arc surface of the bending region 120 of the flexible substrate 100. It should be noted that the material of the support module 200 is not specifically limited in the present invention, and other materials having a certain hardness and insulation may be selected as the constituent material of the support module 200.
Fig. 7 is a schematic structural diagram of a display panel according to another embodiment of the present invention, referring to fig. 7, optionally, the flexible substrate 100 further includes a bonding region 130, the bending region 120 connects the bonding region 130 and the display region 110, and the bonding region 130 is opposite to the display region 110;
the side of the flexible substrate 100 away from the light-emitting surface of the display panel includes at least one supporting layer, the supporting layer is disposed between the display area 110 and the binding area 130, and the supporting module 200 abuts against the supporting layer.
Referring to fig. 7, in fig. 7, the display panel includes a supporting layer 710 disposed on a side of the flexible substrate 100 away from the light emitting surface of the display panel, a padding block 720, and a supporting layer 730 disposed on a side of the flexible substrate 100 away from the side where the flexible substrate 100 is bound with the display driving chip 800, for example, schematically illustrated, the binding region 130 of the display flexible substrate 100 may bind the display driving chip 800, and a driving signal provided by the display driving chip 800 may be transmitted to the driving backplane 400 through the metal routing 600 of the bending region 120, so as to drive the OLED structure layer 500 to emit light for display. The supporting layer may further support the bending region 120 of the flexible substrate 100, and the supporting module 200 abuts against the supporting layer, so that when the bending process is performed, the supporting module 200 is fixed at a position which remains unchanged, and further when the flexible substrate 100 is bent along the first surface 201 of the supporting module 200, a fixed bending radius may be maintained, thereby preventing the flexible substrate 100 from being excessively stretched; moreover, after bending, the bending region 120 can be better supported, so that dead bending is prevented.
It should be noted that the display panel provided by the present invention includes a support module, which is not limited to the structure shown in fig. 1, 2, 3 and 5, and includes an arc surface bonded to the inner side of the bending region of the flexible substrate through the first adhesive layer 300, and a fulcrum existing between the support layer and the side opposite to the arc surface.
Fig. 8 is a schematic structural diagram of a display panel according to another embodiment of the present invention, and referring to fig. 8, optionally, a third adhesive layer 900 is disposed between the support module 200 and the support layer, and the support module 200 and the support layer are adhered by the third adhesive layer 900.
The third adhesive layer 900 is disposed between the support module 200 and the support layer, so that the support module 200 can be firmly fixed between the support layer and the flexible substrate 100, the bending region 120 of the flexible substrate 100 can be more firmly supported, the bending region 120 of the flexible substrate 100 can maintain a fixed bending radius, and the structure of the entire display panel can be more compact and firm.
In addition, it should be noted that the specific type of the display panel is not specifically limited in this embodiment, the scheme of this embodiment may be applied to any display panel related to the bending region, and the exemplary display panel may be an OLED display panel, a quantum dot light emitting diode QLED display panel, a micro light emitting diode micro led display panel, or a stretched OLED display panel and a liquid crystal display panel.
In a second aspect, an embodiment of the present invention further provides a display device, and fig. 9 is a schematic structural diagram of a display device provided in an embodiment of the present invention, where the display device 10 includes the display panel 1000 provided in any embodiment of the present invention. The display device 10 may be a mobile phone as shown in fig. 9, or may be a computer, a television, an intelligent wearable display device, and the like, which is not particularly limited in this embodiment of the present invention.
The display device provided by the embodiment of the invention comprises the display panel provided by any embodiment of the invention, wherein the display panel comprises: the flexible substrate comprises a display area and a bending area positioned on at least one side of the display area; the flexible substrate in the bending area is bent towards one side of the light-emitting surface far away from the display panel, a supporting module is arranged on the bending inner side of the bending area, a first surface of the supporting module is bonded with the flexible substrate through a first bonding layer, the first surface is an arc-shaped surface, and the radius of the first surface is equal to the bending radius of the bending area. The support module is arranged on the bending inner side of the bending area of the flexible substrate and comprises an arc-shaped surface, the arc-shaped surface is bonded with the flexible substrate of the bending area through a first bonding layer, so that when the flexible substrate is bent, the radius of the bending area of the flexible substrate is the same as that of the arc-shaped surface, the bending radius of the bending area can be accurately controlled, the flexible substrate is prevented from being excessively stretched when being bent, the support module can support and protect the bending area, dead folding is prevented from occurring in the bending area, the breakage of wiring in the bending area is avoided, and the reliability of the display panel is improved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A display panel, comprising:
the flexible substrate comprises a display area and a bending area positioned on at least one side of the display area;
the flexible substrate in the bending area is bent towards one side far away from the light emitting surface of the display panel, a support module is arranged on the bending inner side of the bending area, a first surface of the support module is bonded with the flexible substrate through a first bonding layer, the first surface is an arc surface, and the radius of the first surface is equal to the bending radius of the bending area;
the supporting module is semicircular in shape along the section perpendicular to the direction of the flexible substrate;
one side of the flexible substrate, which is far away from the light-emitting surface of the display panel, comprises a padding block, the padding block is abutted against the supporting module, and no gap exists between the padding block and the supporting module;
the support module comprises a substrate and a plurality of protrusions arranged on the substrate; the bottom surface of the substrate is an arc-shaped surface, and a second bonding layer is arranged between every two adjacent protrusions.
2. The display panel according to claim 1, characterized in that:
the substrate thickness of the support module is less than or equal to 0.1 millimeter.
3. The display panel according to claim 1, wherein each of the protrusions has a cross-sectional shape in a direction perpendicular to the flexible substrate that is an isosceles triangle.
4. The display panel according to claim 1, wherein each of the protrusions has an isosceles trapezoid shape in a cross-sectional shape perpendicular to the flexible substrate.
5. The display panel according to claim 1, wherein the material of the support module is polyethylene terephthalate or polycarbonate.
6. The display panel according to claim 1, characterized in that:
the flexible substrate further comprises a binding area, the bending area is connected with the binding area and the display area, and the binding area is opposite to the display area;
one side of the flexible substrate, which is far away from the light-emitting surface of the display panel, comprises at least one supporting layer, the supporting layer is arranged between the display area and the binding area, and the supporting module is abutted against the supporting layer.
7. The display panel according to claim 6, wherein:
and a third bonding layer is arranged between the support module and the support layer, and the support module and the support layer are bonded through the third bonding layer.
8. A display device characterized by comprising the display panel according to any one of claims 1 to 7.
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| CN201811446345.4A CN109559639B (en) | 2018-11-29 | 2018-11-29 | Display panel and display device |
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| CN201811446345.4A CN109559639B (en) | 2018-11-29 | 2018-11-29 | Display panel and display device |
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| CN109559639B true CN109559639B (en) | 2022-04-05 |
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