CN109166463B - Display device and manufacturing method thereof - Google Patents
Display device and manufacturing method thereof Download PDFInfo
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- CN109166463B CN109166463B CN201811295937.0A CN201811295937A CN109166463B CN 109166463 B CN109166463 B CN 109166463B CN 201811295937 A CN201811295937 A CN 201811295937A CN 109166463 B CN109166463 B CN 109166463B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000005452 bending Methods 0.000 claims description 34
- 239000013307 optical fiber Substances 0.000 claims description 22
- 239000012780 transparent material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- 239000011358 absorbing material Substances 0.000 claims description 6
- 238000005530 etching Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 2
- 230000004313 glare Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 9
- 238000005253 cladding Methods 0.000 description 6
- 239000000945 filler Substances 0.000 description 6
- 230000001154 acute effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- G09F9/301—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 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a display device and a manufacturing method thereof, wherein the display device comprises: the flexible display panel is bent towards the direction far away from the light emitting side of the display device; the cover plate is positioned on one surface of the flexible display panel facing the light emergent side and bends towards the direction far away from the light emergent side of the display device; the cover plate comprises a first plane part and a second plane part which are connected, and a first included angle between the first plane part and the second plane part is a non-zero included angle; the first light guide component is positioned between the cover plate and the flexible display panel and fills the first included angle; the first light guide part comprises a first sub-plane attached to the first plane part, a second sub-plane attached to the second plane part, and a third sub-connecting surface connecting the first sub-plane and the second sub-plane. The invention provides a display device and a manufacturing method thereof, which aim to avoid edge glare of the display device.
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, no matter the size or the display quality of a display screen, breakthrough progress is made. As an important development direction of display technology, flexible display devices are attracting attention due to their thinness and flexibility.
In the prior art, a flexible display panel is usually bent and packaged in a sealed space formed by a substrate and a cover plate to form a display device. In order to meet the curved shape of the flexible display panel, the cover plate is also curved so as to be attached to the curved flexible display panel. Because the curved cover plate can reflect the ambient light at various angles at the edge part (cambered surface part) of the curved cover plate, the curved cover plate has a serious glare problem at the edge part (cambered surface part), so that the edge of the display device is dazzled, and the user experience is influenced.
Disclosure of Invention
The invention provides a display device and a manufacturing method thereof, which aim to avoid edge glare of the display device.
In a first aspect, an embodiment of the present invention provides a display device, including:
the flexible display panel is bent towards the direction far away from the light emitting side of the display device;
the cover plate is positioned on one surface of the flexible display panel facing the light emergent side and bends towards the direction far away from the light emergent side of the display device;
the cover plate comprises a first plane part and a second plane part which are connected, and a first included angle between the first plane part and the second plane part is a non-zero included angle;
the first light guide component is positioned between the cover plate and the flexible display panel and fills the first included angle;
the first light guide part comprises a first sub-plane attached to the first plane part, a second sub-plane attached to the second plane part, and a third sub-connecting surface connecting the first sub-plane and the second sub-plane.
In a second aspect, an embodiment of the present invention provides a method for manufacturing a display device, for forming the display device of the first aspect, including:
providing a flexible display panel, wherein the flexible display panel is bent towards a direction far away from the light emitting side of the display device;
providing a cover plate; the cover plate is bent towards the direction far away from the light emitting side of the display device; the cover plate comprises a first plane part and a second plane part which are connected, and a first included angle between the first plane part and the second plane part is a non-zero included angle;
providing a first light guide member, and filling the first included angle with the first light guide member; the first light guide part comprises a first sub-plane attached to the first plane part, a second sub-plane attached to the second plane part, and a third sub-connecting surface connecting the first sub-plane and the second sub-plane;
and attaching one surface of the flexible display panel facing to the light emergent side to one surface of the cover plate provided with the first light guide component.
In the display device provided by the embodiment of the invention, the cover plate comprises the first flat plate and the second flat plate, the inner surface and the outer surface of the cover plate are both formed by planes, the inner surface of the cover plate refers to the surface of one side of the cover plate in the direction away from the light-emitting side of the display device, the outer surface of the cover plate refers to the surface of one side of the cover plate in the direction along the light-emitting side of the display device, and the inner surface and the outer surface of the cover plate are both non-cambered surfaces and do not have the problem that cambered surfaces reflect ambient light at all angles, so. In addition, the embodiment of the invention further comprises a first light guide component, the first light guide component is positioned between the flexible display panel and the cover plate, and at least part of area of the flexible display panel can be attached to the cover plate through the first light guide component, so that the firmness degree between the flexible display panel and the cover plate is increased.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view along AA' in FIG. 1;
FIG. 3 is an enlarged view of the area S1 in FIG. 2;
fig. 4 is a schematic structural diagram of a first light-guiding member according to an embodiment of the present invention;
FIG. 5 is an enlarged view of the area S2 in FIG. 4;
FIG. 6 is a schematic view of another enlarged structure of the area S2 in FIG. 4;
fig. 7 is a schematic partial structure diagram of another display device according to an embodiment of the present invention;
FIG. 8 is an enlarged view of the area S3 in FIG. 7;
FIG. 9 is a schematic view of another enlarged structure of the area S3 in FIG. 7;
fig. 10 is a schematic partial structure diagram of another display device according to an embodiment of the present invention;
fig. 11 is a schematic partial structure diagram of another display device according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a flexible display panel according to an embodiment of the present invention;
fig. 13 is a flowchart of a method for manufacturing a display device according to an embodiment of the invention;
fig. 14-17 are schematic diagrams illustrating a manufacturing process of a display device according to an embodiment of the invention;
fig. 18 is a schematic view illustrating a second light-guiding member according to an embodiment of the 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.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of a cross section along AA' in fig. 1, fig. 2 and fig. 3 are schematic structural diagrams of an enlarged area S1 in fig. 2, and referring to fig. 1, fig. 2 and fig. 3, the display device includes a first edge 1 and a second edge 2 opposite to each other, and a third edge 3 and a fourth edge 4 opposite to each other. In fig. 1, the glare occurs mainly at the first edge 1 and the second edge 2, for example, but not limited thereto, and in other embodiments, the glare may occur at the third edge 3 and the fourth edge 4. The display device includes a flexible display panel 100, a cover plate 200, and a first light-guiding member 300. The flexible display panel 100 is bent toward a direction away from the light emitting side of the display device. The direction of the broad arrows in fig. 2 illustrates the light exit direction of the display device. The cover plate 200 is located on a surface of the flexible display panel 100 facing the light exit side of the display device, and is bent towards a direction away from the light exit side of the display device. The cover plate 200 includes a first flat portion 210 and a second flat portion 220 connected to each other, and a first included angle α between the first flat portion 210 and the second flat portion 220 is a non-zero included angle. The first included angle α may be an acute angle, a right angle, or an obtuse angle. When the first included angle α is an acute angle, the cover plate 200 is relatively sharp, and a user is easily injured during the use of the display device. Therefore, it is preferable that the first included angle α is a right angle or an obtuse angle. The first light guide 300 is located between the cover 200 and the flexible display panel 100, and fills the first included angle α. The first light-guiding member 300 includes a first sub-plane 310 attached to the first plane portion 210, a second sub-plane 320 attached to the second plane portion 220, and a third sub-connecting surface 330 connecting the first sub-plane 310 and the second sub-plane 320. The third sub-joint face 330 is disposed opposite to the flexible display panel 100 (i.e., the third sub-joint face 330 is one of the faces of the first light-guiding member 300 close to the flexible display panel 100). Optionally, at least a partial region of the flexible display panel 100 may be attached to the cover plate 200 through the third sub-connection surface 330. The display device may further include a substrate 400, and the flexible display panel 100 is encapsulated in a sealed space formed by the substrate 400 and the cover plate 200.
In the display device provided by the embodiment of the invention, the cover plate comprises the first flat plate and the second flat plate, the inner surface and the outer surface of the cover plate are both formed by planes, the inner surface of the cover plate refers to the surface of one side of the cover plate in the direction away from the light-emitting side of the display device, the outer surface of the cover plate refers to the surface of one side of the cover plate in the direction along the light-emitting side of the display device, and the inner surface and the outer surface of the cover plate are both non-cambered surfaces and do not have the problem that cambered surfaces reflect ambient light at all angles, so. In addition, the embodiment of the invention further comprises a first light guide component, the first light guide component is positioned between the flexible display panel and the cover plate, and at least part of area of the flexible display panel can be attached to the cover plate through the first light guide component, so that the firmness degree between the flexible display panel and the cover plate is increased. Meanwhile, the flexible display panel can be prevented from being excessively bent due to the included angle of the filling cover plate, the local stress is excessively large, and the flexible display panel is prevented from being broken or folded.
Optionally, the display panel includes two second display regions located at two sides of the first display region, and optionally, the two second display regions are symmetrical with respect to the first display region; the cover plate comprises two second plane parts which are respectively positioned at two sides of the first plane part, and the first light guide parts corresponding to the two second plane parts are symmetrically arranged relative to the first plane part. Therefore, the junction positions (namely the bending positions) of the two second display areas and the first display area of the flexible display panel can be stably supported to the same degree, the bending degree of the bending areas on the two sides of the first display area of the flexible display panel is ensured to be consistent when the flexible display panel and the cover plate are attached, and the process precision and the user experience are improved.
Optionally, referring to fig. 2 and fig. 3, the flexible display panel 100 is divided into a first display area 110, a second display area 120, and a third display area 130 located between the first display area 110 and the second display area 120, wherein the first display area 110 is attached to the first plane portion 210, the second display area 120 is attached to the second plane portion 220, and at least a portion of the third display area 130 is attached to the third sub-connecting surface 330. The third display area 130 is a curved surface and is bent toward a direction away from the light emitting side of the display device. It should be noted that, in fig. 3, the first display area 110 and the second display area 120 are illustrated as being flat surfaces, which is not a limitation of the present invention, and in other embodiments, the first display area 110 and the second display area 120 may also be curved surfaces.
Fig. 4 is a schematic structural diagram of a first light-guiding member according to an embodiment of the present invention, and referring to fig. 2, fig. 3 and fig. 4, the first light-guiding member 300 guides light in a fixed direction, where the fixed direction is a direction in which the third sub-connecting surface 330 points to the first sub-plane 310, or a direction in which the third sub-connecting surface 330 points to the second sub-plane 320. This fixing direction, i.e., the light guiding direction of the first light-guiding member 300, is exemplarily illustrated by a dotted arrow in fig. 4. The light-guiding incident end of the first light-guiding member 300 is located at the third sub-connection surface 330, and the light-guiding output end of the first light-guiding member 300 is located at the first sub-plane 310 and the second sub-plane 320. The light emitted from the third display region 130 of the flexible display panel 100 may be emitted to the first plane part 210 of the cover plate 200 (emitted in the Z-axis direction) and the second plane part 220 of the cover plate 200 (emitted in the X-axis direction) along the light guiding direction of the first light-guiding member 300. In the embodiment of the present invention, since the first light-guiding member 300 guides light in the fixed direction, for a light-emitting point of the flexible display panel 100, light emitted from the light-emitting point can only exit from the first planar portion 210 of the cover 200, or light emitted from the light-emitting point can only exit from the second planar portion 220 of the cover 200. Thereby avoiding the ghost phenomenon caused when the light emitted from the same light-emitting point of the flexible display panel 100 exits from the first and second flat portions 210 and 220 of the cover 200 at the same time.
Alternatively, referring to fig. 2, 3 and 4, the third sub-joint face 330 includes an a region 331 near the first sub-plane 310 and a b region 322 near the second sub-plane 320. The light-guiding and emitting end corresponding to the light-guiding and incident end of the first light-guiding member 300 in the first area 331 is located at the first sub-plane 310, and the light-guiding and emitting end corresponding to the light-guiding and incident end of the first light-guiding member 300 in the second area 332 is located at the second sub-plane 320. Therefore, the light irradiated to the first region 331 can be emitted only from the first sub-plane 310 after propagating through the first light-guiding member 300; the light irradiated to the second region 322 can exit only from the second sub-plane 320 after propagating through the first light-guiding member 300.
Fig. 5 is an enlarged schematic structural view of the region S2 in fig. 4, and referring to fig. 4 and 5, the first light-guiding member 300 includes a plurality of light-guiding through holes 341. The sidewalls 342 of the light guide through hole 341 may include a light absorbing material, and the sidewalls 342 of the light guide through hole 341 are used to absorb light incident on the sidewalls 342, so that the light can only propagate in the light guide through hole 341, thereby forming a fixed light guide direction. The light guiding direction (indicated by a dotted arrow in fig. 5) of the first light-guiding member 300 is the same as the extending direction of the light-guiding through-hole 341.
Fig. 6 is another enlarged schematic structural diagram of an area S2 in fig. 4, and referring to fig. 4 and 6, the first light-guiding member 300 includes a plurality of first optical fiber structures 350, a light-guiding direction (indicated by a dashed arrow in fig. 6) of the first light-guiding member 300 is the same as an extending direction of the first optical fiber structures 350, and a light-absorbing material 360 is disposed between every two adjacent first optical fiber structures 350. The first optical fiber structure 350 may include a first core 351 and a first cladding 352, the refractive index of the first core 351 is greater than that of the first cladding 352, light incident into the first core 351 is confined to propagate in the first core 351 due to the effect of total reflection, and light incident into the first core 351 cannot propagate into the first cladding 352, thereby forming a fixed light guiding direction.
Alternatively, referring to fig. 2, 3 and 4, the third sub-joint face 330 is a plane. A plane is easier to form than a curved surface, and therefore, the third sub-connecting surface 330 is a plane, which reduces the difficulty in manufacturing the first light-guiding member 300, thereby improving the production efficiency of the display device.
Optionally, in other embodiments, the third sub-connection surface may also be a curved surface, and optionally, the curved surface protrudes toward the side away from the flexible display panel; through connecting the face with the third son and setting up to the curved surface, can be with the second display area with the juncture position (buckle the position promptly) of first display area and the better laminating of face is connected to the third son, the laminating area is bigger, the structure is more stable, can play more comprehensive and more homogeneous support to flexible display panel in addition, fully fill the gap between flexible display and the apron, more be favorable to deriving flexible display panel's luminescence, improve display effect. Of course, in other alternative embodiments of the present invention, the third sub-joint surface may also be determined according to specific requirements and product requirements, and the present invention is not limited thereto.
Alternatively, referring to fig. 2, 3 and 4, the light guiding direction (indicated by a dotted arrow in fig. 4) of the first light-guiding member 300 is perpendicular to the third sub-connection face 330. Further referring to fig. 5, when the light guiding direction of the first light-guiding member 300 is perpendicular to the third sub-connection surface 330, the light emitted from the third display region 130 of the flexible display panel 100 can be incident into the light-guiding through hole 341 with a smaller incident angle, so that the light is transmitted in the light-guiding through hole 341 rather than being absorbed by the sidewall 342 of the light-guiding through hole 341, thereby improving the light utilization rate. Further referring to fig. 6, when the light guiding direction of the first light-guiding member 300 is perpendicular to the third sub-connecting surface 330, the light emitted from the third display region 130 of the flexible display panel 100 can be incident into the first optical fiber structure 350 at a smaller incident angle, so as to satisfy the condition of total reflection, so that the light is limited to propagate in the first fiber core 351, and the light utilization rate is improved.
Fig. 7 is a partial structural schematic view of another display device according to an embodiment of the present invention, and referring to fig. 7, the display device further includes a second light-guiding member 500, where the second light-guiding member 500 is located between the first light-guiding member 300 and the flexible display panel 100. The second light guide member 500 includes two triangular prism-shaped light guide sub-members 510, the triangular prism-shape refers to the shape of the light guide sub-members 510 before the flexible display panel 100 is bent, the shape of the light guide sub-members 510 after the flexible display panel 100 is bent changes slightly (i.e., the bottom surface of the triangular prism is changed from a plane to a curved surface), and the triangular prism-shaped light guide sub-members 510 extend in a direction parallel to the bending axis of the flexible display panel and are arranged in a direction perpendicular to the bending axis of the flexible display panel. The extending direction of the flexible display panel bending axis is the Y-axis direction. The flexible display panel 100 is divided into a first display area 110, a second display area 120, and a third display area 130 located between the first display area 110 and the second display area 120, wherein the first display area 110 is attached to the first plane portion 210, and the second display area 120 is attached to the second plane portion 220. The three side surfaces of the triangular prism-shaped light guiding sub-assembly 510 are respectively attached to the third display area 130, the third sub-connecting surface 330 and the cover plate 200. One light guide sub-component 510 of the second light guide member 500 is attached to the first planar portion 210 of the cover plate 200, and the other light guide sub-component 510 of the second light guide member 500 is attached to the second planar portion 220 of the cover plate 200.
Alternatively, referring to fig. 7, the first included angle α is a right angle, α is 90 °, and the first flat portion 210 of the cover plate 200 is perpendicular to the second flat portion 220 of the cover plate 200, so that the second flat portion 220 of the cover plate 200 can bear a large force applied from the front (along the Z-axis direction) of the display device, thereby improving the structural stability of the display device. On the other hand, right angles are less difficult to make relative to acute and obtuse angles. The first sub-plane 310 of the first light-guiding member 300 and the second sub-plane 320 of the first light-guiding member 300 are perpendicular to each other. The first light guide 300 may be an isosceles right triangle in a cross section perpendicular to the bending axis direction of the flexible display panel. Therefore, the quantity of the light emitted to the first plane part 210 through the first sub-plane 310 is the same as the quantity of the light emitted to the second plane part 220 through the second sub-plane 320, and the light emitting effects of the first plane part 210 and the second plane part 220 of the cover plate 200 are the same.
Alternatively, referring to fig. 7, a dotted arrow in fig. 7 illustrates a propagation path of light emitted from a light-emitting point of the third display region 130 of the flexible display panel 100, the second light-guiding member 500 guides light in a fixed direction, a light-guiding incident end of the second light-guiding member 500 is abutted with the flexible display panel 100, and a light-guiding exit end of the second light-guiding member 500 is abutted with the first light-guiding member 300. In the embodiment of the present invention, since the first light-guiding member 300 and the second light-guiding member 500 both guide light in the fixed direction, for a light-emitting point of the flexible display panel 100, the light emitted from the light-emitting point can only exit from the first planar portion 210 of the cover 200, or the light emitted from the light-emitting point can only exit from the second planar portion 220 of the cover 200. Thereby avoiding the ghost phenomenon caused when the light emitted from the same light-emitting point of the flexible display panel 100 exits from the first and second flat portions 210 and 220 of the cover 200 at the same time. In addition, the second light-guiding member 500 fills the gap formed by the flexible display panel 100, the cover sheet 200, and the first light-guiding member 300, thereby increasing the degree of firmness between the flexible display panel 100 and the cover sheet 200. The third sub-connecting surface 330 of the first light-guiding member 300 is a plane, the third display area 130 of the flexible display panel 100 is a curved surface, and the shapes of the plane and the curved surface are not matched, so that the second light-guiding member 300 located between the first light-guiding member 300 and the flexible display panel 100 has the effect of matching the plane and the curved surface, that is, the effect of matching the first light-guiding member 300 and the flexible display panel 100. The second light-guiding member 500 may be a flexible material and have a certain deformability. The second light-guiding member 500 may also serve as a buffer when being attached, so as to reduce the impact force when the flexible display panel 100 is attached to the first light-guiding member 300. Fig. 8 is an enlarged structural schematic view of an area S3 in fig. 7, and referring to fig. 7 and 8, the second light-guiding member 500 includes a plurality of second optical fiber structures 520, a light-guiding incident end of the second light-guiding member 500 is an end of the second optical fiber structures 520 adjacent to the flexible display panel 100, and a light-guiding emergent end of the second light-guiding member 500 is an end of the second optical fiber structures 520 adjacent to the first light-guiding member 300. The second light-guiding member 500 may be a flexible material and have a certain deformability, so as to better fill the gap formed by the flexible display panel 100, the cover sheet 200, and the first light-guiding member 300. Therefore, the light guiding direction of the second light-guiding member 500 before being bent along with the bending of the flexible display panel 100 is different from the light guiding direction after being bent along with the bending of the flexible display panel 100. In the embodiments of the present invention, the fact that the second light-guiding members 500 each guide light in the fixed direction means a light-guiding direction of the second light-guiding members 500 after being bent along with the bending of the flexible display panel 100. The second optical fiber structure 520 may include a second core 521 and a second cladding 522, the refractive index of the second core 521 is greater than that of the second cladding 522, light incident into the second core 521 is limited to propagate in the second core 521 due to the effect of total reflection, and light incident into the second core 521 cannot propagate into the second cladding 522, thereby forming a fixed light guiding direction. The space between two adjacent second optical fiber structures 520 may be a gap or filled with a filler species.
Alternatively, referring to fig. 7 and 8, a light absorbing material 360 is disposed between every two adjacent second optical fiber structures 520. The light absorbing material 360 may absorb light incident outside the second core 521.
Fig. 9 is another enlarged schematic structural view of the region S3 in fig. 7, and referring to fig. 7 and 9, the flexible second light-guiding member 500 includes a plurality of light-guiding cylinders 540, and refractive indexes of regions of the light-guiding cylinders 540 are the same. That is, the light guiding cylinder 540 is an object made of a uniform substance, and each portion thereof has the same optical characteristics. The light guide cylinder 540 extends in the same direction as the second light guide member 500. A gap 550 may be disposed between two adjacent light guiding cylinders 540, and the gap 550 may also be referred to as a slit or an air hole. In the embodiment of the present invention, the flexible second light guide member 500 includes a plurality of light guide cylinders 540 with the same refractive index, and compared with the light guide cylinder 540 with an optical fiber structure, the structure of the light guide cylinder 540 is simpler, so that the cost is reduced.
Fig. 10 is a partial structural schematic view of another display device according to an embodiment of the present invention, and referring to fig. 10, the display device further includes a filler 600, where the filler 600 fills a gap formed by the first light-guiding member 300, the flexible display panel 100, and the cover plate 200. The filler 600 may be a flexible material and have a certain deformability, so as to better fill the gap formed by the first light-guiding member 300, the flexible display panel 100 and the cover sheet 200. The filler 600 in the embodiment of the present invention only plays a role of filling, and the filler 600 has no fixed light guiding direction.
Fig. 11 is a partial structural schematic view of another display device according to an embodiment of the present invention, and referring to fig. 11, the third sub-connection surface 330 is a curved surface, and a curved shape of the third display area 130 of the flexible display panel 100 is identical to a curved shape of the third sub-connection surface 330. The uniform bending shape here means that both the bending degree and the bending direction are uniform, that is, the third display area 130 is bent together with the third sub-connecting surface 330. In the embodiment of the present invention, the curved shape of the third display area 130 of the flexible display panel 100 is consistent with the curved shape of the third sub-connecting surface 330, so that a gap between the first light-guiding member 300 and the flexible display panel 100 can be reduced or even eliminated, and thus the first light-guiding member 300 and the flexible display panel 100 can be directly attached to each other, thereby avoiding a situation that the first light-guiding member 300 and the flexible display panel 100 are filled with other materials when a gap is left between the first light-guiding member 300 and the flexible display panel 100, and most of the third display area 130 of the flexible display panel 100 is attached to the first light-guiding member 300, thereby ensuring the firmness of bonding the flexible display panel 100 and the first light-guiding member 300.
Referring to fig. 2 and 3, when the first display area 110 and the second display area 120 are flat surfaces, the third display area 130 is a curved surface, and the third display area 130 is bent toward a direction away from the light emitting side of the display device, the length of an object in the third display area 130 of the flexible display panel 100 is enlarged along the X-axis direction due to the curved surface enlarging effect. Therefore, if the first display region 110 of the flexible display panel 100 and the third display region 130 of the flexible display panel 100 are set to the same pixel density according to the conventional design, an image displayed by the flexible display panel 100 seen by a user is distorted and distorted at the edge of the display device. With continuing reference to fig. 2 and fig. 3, and with reference to fig. 4, the third sub-connecting surface 330 includes an a region 331 close to the first sub-plane 310 and a b region 332 close to the second sub-plane 320, light incident on the a region 331 can exit from the first sub-plane 310 uniformly, but the area of the first sub-plane 310 is larger than that of the a region 331, so that the picture actually exiting the first sub-plane 310 is enlarged. Similarly, the light incident on the second sub-plane 332 can uniformly exit from the second sub-plane 320, but the area of the second sub-plane 320 is larger than that of the second sub-plane 332, so that the picture actually exiting the second sub-plane 320 is enlarged. In summary, the image displayed by the flexible display panel 100 viewed by the user is distorted and distorted at the edge of the display device.
Fig. 12 is a schematic structural diagram of a flexible display panel according to an embodiment of the present invention, referring to fig. 2, fig. 3 and fig. 12, the flexible display panel 100 is divided into a first display area 110, a second display area 120, and a third display area 130 located between the first display area 110 and the second display area 120, wherein the first display area 110 is attached to the first plane portion 210, and the second display area 120 is attached to the second plane portion 220. The first display area 110 and the second display area 120 may be planar. The flexible display panel 100 includes a plurality of pixels 101 arranged in an array. The density of the pixels 101 in the third display area 130 of the flexible display panel 100 is less than the density of the pixels 101 in the first display area 110 of the flexible display panel 100 in a direction perpendicular to the bending axis of the flexible display panel (the bending axis of the flexible display panel extends in the Y-axis direction). Alternatively, the length of the pixels 101 in the third display area 130 of the flexible display panel 100 is smaller than the length of the pixels 101 in the first display area 110 of the flexible display panel 100 in a direction perpendicular to the bending axis of the flexible display panel (the bending axis of the flexible display panel extends in the Y-axis direction). As the density of the pixels 101 in the X-axis direction of the third display area 130 of the flexible display panel 100 is greater, the density of the pixels 101 in the X-axis direction of the first display area 110 of the flexible display panel 100 is smaller, and the size of the pixels 101 in the third display area 130 in the X-axis direction is enlarged due to the curved surface enlarging effect and is consistent with the size of the pixels 101 in the first display area 110 in the X-axis direction, the image display quality of the display device is ensured.
Alternatively, referring to fig. 7 and 12, the display device further includes a second light-guiding member 500, the second light-guiding member 500 being located between the first light-guiding member 300 and the flexible display panel 100. The second light guide member 500 guides light in a fixed direction, a light guide incident end of the second light guide member 500 is abutted with the flexible display panel 100, and a light guide exit end of the second light guide member 500 is abutted with the first light guide member 300. The density of the pixels 101 in the third display area 130 of the flexible display panel 100 is less than the density of the pixels 101 in the first display area 110 of the flexible display panel 100 in a direction perpendicular to the bending axis of the flexible display panel (the bending axis of the flexible display panel extends in the Y-axis direction). The pixel arrangement of the first display area 110 and the third display area 130 of the flexible display panel 100 is no longer consistent, so that precise alignment is further required. When the light-guiding incident end of the second light-guiding member 500 is abutted to the flexible display panel 100 and the light-guiding emitting end of the second light-guiding member 500 is abutted to the first light-guiding member 300, the second light-guiding member 500 ensures that the flexible display panel 100 and the second light-guiding member 500 have good alignment accuracy. The alignment precision here refers not only to mechanical alignment, but also to optical alignment, which may be, for example, the alignment between one optical fiber and another optical fiber, thereby achieving a good light-conducting effect.
Fig. 13 is a flowchart illustrating a method for manufacturing a display device according to an embodiment of the present invention, and fig. 14 to 17 are schematic diagrams illustrating a method for manufacturing a display device according to an embodiment of the present invention, and referring to fig. 13 to 17, the method for manufacturing a display device includes the following steps:
s110, providing a flexible display panel 100, and bending the flexible display panel 100 toward a direction away from the light exit side of the display device. The wide arrows in fig. 14 to 17 indicate the light exit direction of the display device. The flexible display panel 100 is bent around a flexible display panel bending axis extending along the Y-axis direction and toward a direction away from the light exit side of the display device.
S120, providing a cover plate 200, wherein the cover plate 200 is bent towards a direction away from the light emitting side of the display device. The cover plate 200 includes a first planar portion 210 and a second planar portion 220 connected to each other, and a first included angle α between the first planar portion 210 and the second planar portion 220 is a non-zero included angle.
The first included angle α may be an acute angle, a right angle, or an obtuse angle. Preferably, the first included angle α may be a right angle or an obtuse angle.
S130, providing the first light-guiding member 300, and filling the first light-guiding member 300 with the first included angle α. The first light-guiding member 300 includes a first sub-plane 310 attached to the first plane portion 210, a second sub-plane 320 attached to the second plane portion 220, and a third sub-connecting surface 330 connecting the first sub-plane 310 and the second sub-plane 320.
S140, a surface of the flexible display panel 100 facing the light emitting side of the display device is bonded to a surface of the cover 200 on which the first light guide 300 is disposed.
The first light guide 300 is located between the cover 200 and the flexible display panel 100, and fills the first included angle α.
In the embodiment of the invention, the cover plate comprises the first flat plate and the second flat plate, the inner surface and the outer surface of the cover plate are both formed by planes, the inner surface of the cover plate refers to the surface of one side of the cover plate in the direction away from the light-emitting side of the display device, the outer surface of the cover plate refers to the surface of one side of the cover plate in the direction along the light-emitting side of the display device, and the inner surface and the outer surface of the cover plate are both non-cambered surfaces and do not have the problem that the cambered surfaces reflect ambient light at all angles. In addition, the embodiment of the invention further comprises a first light guide component, the first light guide component is positioned between the flexible display panel and the cover plate, and at least part of area of the flexible display panel can be attached to the cover plate through the first light guide component, so that the firmness degree between the flexible display panel and the cover plate is increased.
Alternatively, referring to fig. 14 to 17 of fig. 1, the display device further includes a second light-guiding member 500. The step S110 may include the following sub-steps:
s111, providing the flexible display panel 100 in a flattened state.
S112, forming a second light guide member 500 on a surface of the flat flexible display panel 100 facing the light emitting side of the display device.
The second light guide 500 includes two triangular prism-shaped light guide sub-members 510.
And S113, bending the flexible display panel 100 around a flexible display panel bending axis and towards a direction far away from the light emitting side of the display device.
The light guide sub-assembly 510 extends in a direction parallel to the bending axis of the flexible display panel and is arranged in a direction perpendicular to the bending axis of the flexible display panel. The shape of the light guiding sub-assembly 510 changes slightly after the flexible display panel 100 is bent (i.e., the bottom surface of the triangular prism changes from a flat surface to a curved surface).
Fig. 1 and 18 are schematic diagrams illustrating a second light guide member according to an embodiment of the present invention, referring to fig. 1 and 18, a second light guide member 500 includes a plurality of light guide cylinders 540, refractive indexes of regions of the light guide cylinders 540 are the same, and an extending direction of the light guide cylinders 540 is the same as a light guide direction of the second light guide member 500. The method of manufacturing the second light guide member 500 includes the steps of:
s210, providing a transparent material.
And S220, cutting the transparent material into two triangular prisms.
S230, etching the hollowed-out transparent material along the direction perpendicular to the bottom surface of the triangular prism-shaped transparent material to form gaps 550, and arranging the gaps 550 in parallel at intervals along the direction perpendicular to the bending axis of the flexible display panel to form a plurality of light guide cylinders 540.
It is understood that, due to the etching of the whole transparent material, a portion of the transparent material is etched away, and the remaining transparent material forms a plurality of light guiding pillars 540, and a gap 550 may be formed between two adjacent light guiding pillars 540.
In the embodiment of the present invention, the flexible second light guide member 500 includes a plurality of light guide cylinders 540 with the same refractive index, and compared with the light guide cylinder 540 with an optical fiber structure, the light guide cylinder 540 has a simpler structure and a simpler manufacturing method of the light guide cylinder 540, thereby reducing the cost.
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 modifications, rearrangements, combinations 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 (15)
1. A display device, comprising:
the flexible display panel is bent towards the direction far away from the light emitting side of the display device;
the cover plate is positioned on one surface of the flexible display panel facing the light emergent side and bends towards the direction far away from the light emergent side of the display device;
the cover plate comprises a first plane part and a second plane part which are connected, and a first included angle between the first plane part and the second plane part is a non-zero included angle;
the first light guide component is positioned between the cover plate and the flexible display panel and fills the first included angle;
the first light guide part comprises a first sub-plane attached to the first plane part, a second sub-plane attached to the second plane part, and a third sub-connecting surface connecting the first sub-plane and the second sub-plane;
a second light guide member positioned between the first light guide member and the flexible display panel; the second light guide part comprises two light guide sub-parts, the light guide sub-parts are triangular prism-shaped before being bent, the bottom surfaces of the triangular prism-shaped after being bent are correspondingly changed into curved surfaces, and the light guide sub-parts extend along the direction parallel to the bending axis of the flexible display panel and are arranged along the direction perpendicular to the bending axis of the flexible display panel;
the flexible display panel is divided into a first display area, a second display area and a third display area positioned between the first display area and the second display area, wherein the first display area is attached to the first plane part, and the second display area is attached to the second plane part;
and three side surfaces of the light guide sub-component are respectively attached to the third display area, the third sub-connecting surface and the cover plate.
2. The display device according to claim 1,
the third display area is at least partially attached to the third sub-connecting surface.
3. A display device as recited in claim 1, wherein the first light-guiding member guides light in a fixed direction, a light-guiding incident end of the first light-guiding member is located at the third sub-connection surface, and a light-guiding exit end of the first light-guiding member is located at the first sub-plane and the second sub-plane.
4. The display device according to claim 1, wherein the third sub-connection face comprises a region a adjacent to the first sub-plane and a region b adjacent to the second sub-plane;
a light-emitting end corresponding to a light-guiding incident end of the first light-guiding member in the first region is located on the first sub-plane, and a light-emitting end corresponding to a light-guiding incident end of the first light-guiding member in the second region is located on the second sub-plane.
5. The display device according to claim 4, wherein the first light-guide member includes a plurality of light-guide through-holes; the side wall of the light guide through hole is used for absorbing light rays incident on the side wall; the light guide direction of the first light guide part is the same as the extending direction of the light guide through hole.
6. A display device as claimed in claim 4, wherein the first light-guiding member includes a plurality of first optical fiber structures, a light-guiding direction of the first light-guiding member is the same as an extending direction of the first optical fiber structures, and a light-absorbing material is disposed between every two adjacent first optical fiber structures.
7. A display device as claimed in claim 1, characterized in that the third sub-connection face is planar.
8. The display device according to claim 7, wherein a light guiding direction of the first light-guiding member is perpendicular to the third sub-connection face.
9. The display device according to claim 1, wherein the second light-guiding member guides light in a fixed direction,
the light guiding incident end of the second light guiding component is in butt joint with the flexible display panel, and the light guiding emergent end of the second light guiding component is in butt joint with the first light guiding component.
10. The display device according to claim 1, wherein the second light-guiding member includes a plurality of second optical fiber structures; the light guide incident end of the second light guide component is one end of the second optical fiber structure close to the flexible display panel; the light-emitting end of the second light guide part is one end of the second optical fiber structure close to the first light guide part.
11. The display device according to claim 10, wherein a light absorbing material is disposed between every two adjacent second optical fiber structures.
12. The display device according to claim 1, wherein the second light guide member comprises a plurality of light guide pillars, each region of the light guide pillars having the same refractive index; the extending direction of the light guide cylinder is the same as the light guide direction of the second light guide component.
13. The display device according to claim 1, wherein the flexible display panel is divided into a first display area, a second display area, and a third display area located between the first display area and the second display area, wherein the first display area is attached to the first plane portion, and the second display area is attached to the second plane portion;
the flexible display panel comprises a plurality of pixels arranged in an array;
in a direction perpendicular to a bending axis of the flexible display panel, a density of pixels in the third display area of the flexible display panel is less than a density of pixels in the first display area of the flexible display panel.
14. A method of manufacturing a display device for forming a display device as claimed in any one of claims 1 to 13, comprising:
providing a flexible display panel, wherein the flexible display panel is bent towards a direction far away from the light emitting side of the display device;
providing a cover plate; the cover plate is bent towards the direction far away from the light emitting side of the display device; the cover plate comprises a first plane part and a second plane part which are connected, and a first included angle between the first plane part and the second plane part is a non-zero included angle;
providing a first light guide member, and filling the first included angle with the first light guide member; the first light guide part comprises a first sub-plane attached to the first plane part, a second sub-plane attached to the second plane part, and a third sub-connecting surface connecting the first sub-plane and the second sub-plane;
attaching one surface of the flexible display panel facing the light emergent side to one surface of the cover plate provided with the first light guide component;
wherein the display device further comprises a second light guide member;
providing a flexible display panel, the flexible display panel towards keeping away from the direction of display device light-emitting side is buckled and is included:
providing the flexible display panel in a flattened state;
providing a second light guide member formed on one surface of the flexible display panel in a flattened state, which faces the light emitting side of the display device; the second light guide member includes two triangular prism-shaped light guide sub-members;
bending the flexible display panel around the flexible display panel bending axis and towards a direction far away from the light emitting side of the display device; the light guide sub-components extend along a direction parallel to the bending axis of the flexible display panel and are arranged along a direction perpendicular to the bending axis of the flexible display panel.
15. The method of claim 14, wherein the second light guide member comprises a plurality of light guide pillars, each region of the light guide pillars has the same refractive index, and the light guide pillars extend in the same direction as the light guide direction of the second light guide member;
the manufacturing method of the second light guide member includes:
providing a transparent material;
cutting the transparent material into two triangular prisms;
the transparent material forms a gap along the bottom surface direction of the triangular prism-shaped transparent material in a hollow etching mode, and the gap is arranged in parallel at intervals along the direction perpendicular to the bending axis of the flexible display panel to form the light guide cylinders.
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| CN109935172B (en) * | 2019-02-28 | 2021-09-17 | 昆山国显光电有限公司 | Comprehensive display screen and display device |
| CN111145647A (en) * | 2019-12-23 | 2020-05-12 | 武汉华星光电半导体显示技术有限公司 | Cover plate and display device |
| CN111813184B (en) * | 2020-07-16 | 2022-07-26 | 联想(北京)有限公司 | Electronic equipment |
| CN111968523A (en) * | 2020-09-16 | 2020-11-20 | 厦门天马微电子有限公司 | Display device and manufacturing method thereof |
| CN112447110B (en) * | 2020-11-30 | 2022-04-22 | 武汉天马微电子有限公司 | Display device |
| CN115497378A (en) * | 2022-09-02 | 2022-12-20 | 云谷（固安）科技有限公司 | Display device and manufacturing method thereof |
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| CN105810105A (en) * | 2016-03-15 | 2016-07-27 | 京东方科技集团股份有限公司 | Flexible display panel and preparation method thereof and flexible display device |
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| US8210689B2 (en) * | 2007-12-31 | 2012-07-03 | 3M Innovative Properties Company | Projection system |
| KR102272216B1 (en) * | 2015-02-13 | 2021-07-02 | 삼성디스플레이 주식회사 | tiled display apparatus |
| US10048532B2 (en) * | 2016-11-08 | 2018-08-14 | Microsoft Technology Licensing, Llc | Display edge emission compensation |
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| CN102734696A (en) * | 2011-04-04 | 2012-10-17 | Lg伊诺特有限公司 | Backlight unit and display device using the backlight unit |
| CN105810105A (en) * | 2016-03-15 | 2016-07-27 | 京东方科技集团股份有限公司 | Flexible display panel and preparation method thereof and flexible display device |
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