CN110297347B - Display panel, manufacturing method thereof and display device - Google Patents
Display panel, manufacturing method thereof and display device Download PDFInfo
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- CN110297347B CN110297347B CN201910580526.4A CN201910580526A CN110297347B CN 110297347 B CN110297347 B CN 110297347B CN 201910580526 A CN201910580526 A CN 201910580526A CN 110297347 B CN110297347 B CN 110297347B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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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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- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Microelectronics & Electronic Packaging (AREA)
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Abstract
The invention discloses a display panel, a manufacturing method thereof and a display device, wherein the display panel comprises a first substrate, the part of the first substrate corresponding to a non-display area comprises a first surface parallel to the display panel and a second surface vertical to the display panel, the second surface is positioned on one side of the first substrate far away from the display area, and the thickness of the part of the first substrate covered by the second surface is smaller than that of the part of the first substrate covered by the first surface; the first substrate further comprises at least two third surfaces connected with the first surface and the second surface, the display panel further comprises a plurality of connecting portions arranged on the second surface and a plurality of signal lines wired with the first surface through the at least two third surfaces, and the connecting portions are electrically connected with corresponding signal lines and transmit display signals through the corresponding signal lines. By the technical scheme, the realization of the narrow frame of the hard screen is facilitated, and the probability of disconnection of the signal line is reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel, a manufacturing method of the display panel and a display device.
Background
With the development of the full-screen technology, the market demand for narrow-frame products is increasing, and reducing the frame size is an effective means for improving the screen occupation ratio of the display screen.
The COF (Chip On Flex) bending technology is to bend the COF to the back of the panel, but the lower frame of the display panel is still affected by the binding area, which is not favorable for realizing the narrow frame of the display panel.
Disclosure of Invention
The invention provides a display panel, a manufacturing method thereof and a display device, which are beneficial to realizing a narrow frame of a hard screen and reducing the probability of disconnection of a signal line.
In a first aspect, an embodiment of the present invention provides a display panel, including:
a display area and a non-display area located on at least one side of the display area;
the display panel further comprises a first substrate, wherein the part of the first substrate corresponding to the non-display area comprises a first surface parallel to the display panel and a second surface perpendicular to the display panel, the second surface is positioned on one side of the first substrate away from the display area, and the thickness of the part of the first substrate covered by the second surface is smaller than that of the part of the first substrate covered by the first surface;
the first substrate further comprises at least two third surfaces which are connected with the first surface and the second surface, the display panel further comprises a plurality of connecting parts which are arranged on the second surface and a plurality of signal wires which are routed with the first surface through the at least two third surfaces, and the connecting parts are electrically connected with the corresponding signal wires and transmit display signals through the corresponding signal wires.
Further, an included angle between two adjacent third surfaces is greater than or equal to 20 ° and smaller than 80 °.
The change uniformity of the bending angle of the first substrate from the second surface to the third surface and from the third surface to the first surface is improved, the phenomenon that the bending angle of the first substrate from the second surface to the third surface and from the third surface to the first surface has sudden change is avoided, the probability of signal line disconnection is further reduced, and the influence of the signal line disconnection on the display effect of the display panel is further reduced.
Further, an included angle between adjacent third surfaces, an included angle between the third surface connected with the first surface and the first surface, and an included angle between the third surface connected with the second surface and the second surface are equal.
The radian of the first surface A in transition to the second surface B is further optimized, the probability of disconnection of the signal line is further reduced, and the influence of the disconnection of the signal line on the display effect of the display panel is further reduced.
Further, the display panel further includes:
the first part of the flexible circuit board is provided with a plurality of welding pads, the welding pads are correspondingly and electrically connected with the connecting parts, and the second part of the flexible circuit board is bent to the surface of the first substrate opposite to the first surface.
The width of the non-display area of the display panel along the direction in which the non-display area is arranged relative to the display area is further reduced, and the realization of the hard-screen narrow frame is facilitated.
In a second aspect, an embodiment of the present invention further provides a manufacturing method of a display panel, where the manufacturing method includes:
forming a first substrate; the first substrate comprises a first surface and a second surface perpendicular to the first surface, and the thickness of the part of the first substrate covered by the second surface is smaller than that of the part of the first substrate covered by the first surface;
the first substrate forms the at least two third surfaces via a chamfering process; wherein the third surface connects the first surface and the second surface, respectively;
forming a first patterned structure on a second surface of the first substrate; wherein the first patterned structure constitutes at least a connection portion; the second surface comprises a plurality of connecting parts and a plurality of signal wires which are routed with the first surface through the third surface.
Further, the forming the first substrate includes:
providing a second substrate; wherein the second substrate is a substrate corresponding to the plurality of display panels;
performing a chamfering process on a portion of the second substrate corresponding to each of the display panels to form the at least two third surfaces;
cutting the second substrate in a direction perpendicular to the second substrate to form a plurality of first substrates; wherein the cutting location is at the junction of the second surface and the at least two third surfaces.
So that the cut first substrate has a second surface perpendicular to the first substrate and at least two third surfaces connecting the first surface and the second surface.
Further, before cutting the second substrate in a direction perpendicular to the second substrate to form a plurality of first substrates, the fabrication method further includes:
forming a second patterned structure on the first surface and the third surface of the second substrate corresponding to each of the display panel portions; wherein the second patterned structure constitutes at least a part of the signal line.
Such that the second patterned structure constitutes at least part of the signal line connecting the second surface connections, i.e. this part of the signal line is completed before the second substrate is cut to form the first substrate. Further, when a first patterned structure is formed on the second surface of the first substrate, a repair line is formed on at least part of the third surface of the first substrate; wherein the repair line constitutes at least a part of the signal line on the third surface.
So that the third surface forms a complete signal line, the disconnection probability of the signal line electrically connected with the connecting part is greatly reduced, and the influence of the disconnection of the signal line on the display effect of the display panel is further reduced.
Further, after forming the first patterned structure on the second surface of the first substrate, the manufacturing method further includes:
attaching a first portion of a flexible circuit board to a second surface of the first substrate; the bonding pad arranged on the first part of the flexible circuit board is correspondingly and electrically connected with the connecting part;
and bending the second part of the flexible circuit board to the surface of the first substrate opposite to the first surface.
The width of the non-display area of the display panel along the direction in which the non-display area is arranged relative to the display area is further reduced, and the realization of the hard-screen narrow frame is facilitated.
In a third aspect, an embodiment of the present invention further provides a display device, including the display panel according to the first aspect or the display panel manufactured by the manufacturing method of the display panel according to the second aspect.
The embodiment of the invention provides a display panel, a manufacturing method thereof and a display device, wherein the display panel comprises a first substrate, the part of the first substrate corresponding to a non-display area comprises a first surface parallel to the display panel and a second surface vertical to the display panel, the second surface is positioned at one side of the first substrate far away from the display area, the thickness of the part of the first substrate covered by the second surface is smaller than that of the part of the first substrate covered by the first surface, the first substrate also comprises at least two third surfaces connecting the first surface and the second surface, the display panel also comprises a plurality of connecting parts arranged on the second surface and a plurality of signal wires wired with the first surface through at least two third surfaces, the connecting parts are electrically connected with the corresponding signal wires and transmit display signals to the display area through the corresponding signal wires, and the width of the non-display area of the display panel is greatly shortened, the realization of the narrow frame of the hard screen is facilitated, and the probability of the disconnection of the signal line is reduced.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic cross-sectional structure diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic top view of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic side view of a display panel according to an embodiment of the invention;
fig. 4 is a schematic flowchart illustrating a manufacturing method of a display panel according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a method for manufacturing a first substrate according to an embodiment of the present invention;
fig. 6 to 8 are schematic cross-sectional views corresponding to steps of the manufacturing method shown in fig. 5;
fig. 9 is a manufacturing method of another display panel according to an embodiment of the invention;
fig. 10 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. Throughout this specification, the same or similar reference numbers refer to the same or similar structures, elements, or processes. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The embodiment of the invention provides a display panel, which comprises a display area and a non-display area positioned on at least one side of the display area, and further comprises a first substrate, wherein the part of the first substrate corresponding to the non-display area comprises a first surface parallel to the display panel and a second surface vertical to the display panel, the second surface is positioned on one side of the first substrate far away from the display area, and the thickness of the part of the first substrate covered by the second surface is smaller than that of the part of the first substrate covered by the first surface. The first substrate further comprises at least two third surfaces connected with the first surface and the second surface, the display panel further comprises a plurality of connecting portions arranged on the second surface and a plurality of signal lines routed with the first surface through the at least two third surfaces, and the connecting portions are electrically connected with the corresponding signal lines and transmit display signals to the display area through the corresponding signal lines.
COF (Chip On Flex, cover the Chip film) technique of buckling is to the screen body back with COF buckle, in order to reduce the width of display panel lower frame, but display panel's lower frame still receives the influence of binding the district, make the width of lower frame can't shorten again, to flexible display panel, can buckle to the screen body back in order to shorten the width of display panel lower frame with binding the district, but hard screen is owing to receive the restriction of factors such as glass elastic modulus, can't use the district technique of buckling of binding in the flexible screen, lead to the lower frame width of hard screen great, be unfavorable for the realization of the narrow frame of display panel.
The embodiment of the invention adopts a side binding technology, namely, the connecting part is arranged on the second surface of the first substrate, so that the width of a non-display area of the display panel is greatly shortened (namely the length of the non-display area in the extending direction from the display area to the non-display area), the realization of a narrow frame of a hard screen is facilitated, in addition, the first substrate comprises at least two third surfaces, signal wires electrically connected with the connecting part are wired through the inclined third surfaces, the signal wires on the third surfaces formed in the process of manufacturing the signal wires on the first surface can be incomplete, the third surfaces are the inclined surfaces, the signal wires on the third surfaces can be repaired in the process of manufacturing the connecting part on the second surface, so that the signal wires on the third surfaces form a complete structure, the probability of the signal wires on the third surfaces is reduced, the probability of the signal wires on the third surfaces is further reduced, the arrangement of the third surfaces optimizes the transition radian of the second surface of the first substrate to the first surface, the disconnection probability of the signal line is further reduced.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Fig. 1 is a schematic cross-sectional structure diagram of a display panel according to an embodiment of the present invention, fig. 2 is a schematic top-view structure diagram of a display panel according to an embodiment of the present invention, and fig. 3 is a schematic side-view structure diagram of a display panel according to an embodiment of the present invention. Referring to fig. 1 to 3, the display panel includes a display area AA and a non-display area NAA located at least one side of the display area AA, where only the non-display area NAA located at one side of the display area AA is shown, and the non-display area NAA may correspond to a lower frame of the display panel.
The display panel further comprises a first substrate 1, a portion of the first substrate 1 corresponding to the non-display area NAA comprises a first surface a parallel to the display panel, i.e. an upper surface of the first substrate 1, and a second surface B perpendicular to the display panel, i.e. a side surface of the first substrate 1, the second surface B is located on a side of the first substrate 1 away from the display area AA, i.e. along a setting direction XX' of the non-display area NAA relative to the display area AA, a thickness of a portion of the first substrate 1 covered by the second surface B is smaller than a thickness of a portion of the first substrate 1 covered by the first surface a, i.e. a thickness of the first substrate 1 corresponding to the second surface B is smaller than a thickness of the first substrate 1 corresponding to the first surface a, i.e. along a direction perpendicular to the first substrate 1, a thickness of the first substrate 1 corresponding to the second surface B is smaller than a thickness of the first substrate 1 corresponding to the first surface a.
The first substrate 1 further includes at least two third surfaces C connecting the first surface a and the second surface B, and the second surface B is located on a side of the first substrate 1 away from the display area AA along the setting direction XX' of the non-display area NAA relative to the display area AA, and a thickness of the first substrate 1 corresponding to the second surface B is smaller than a thickness of the first substrate 1 corresponding to the first surface a, the display panel further includes a plurality of connecting portions 2 disposed on the second surface B and a plurality of signal lines 3 routed through the at least two third surfaces C and the first surface a, and the connecting portions 2 are electrically connected with the corresponding signal lines 3 and transmit display signals through the corresponding signal lines 3.
The first substrate 1 of the display panel of the structure shown in fig. 1 includes two third surfaces C.
For example, referring to fig. 1 to fig. 3, the first substrate 1 may be a glass substrate, taking the display panel as an organic light emitting display panel as an example, the first substrate 1 disposed corresponding to the display area AA is provided with a structure of an organic light emitting display device 10, a thin film encapsulation layer 11, and the like, the second surface B of the first substrate 1 is provided with a plurality of connection portions 2, and a driving chip (not shown in the figure) transmits display signals through the plurality of connection portions 2 and signal lines 3 disposed in one-to-one correspondence with the connection portions 2, for example, may transmit data signals to the display area AA of the display panel or transmit clock signals to the non-display area NAA of the display panel.
With reference to fig. 1 to 3, by providing the connecting portions 2 for bonding with the driving chip on the second surface B of the first substrate 1, and the connecting portions 2 transmitting the display signals through the plurality of signal lines 3 routed through at least two third surfaces C and the first surface a, while achieving the electrical connection relationship of the connecting portions 2 to transmit the display signals, the width of the non-display area NAA of the display panel along the non-display area NAA with respect to the setting direction XX' of the display area AA (i.e. the length of the non-display area NAA in the extending direction from the display area AA to the non-display area NAA) is greatly reduced by using the side binding technique, that is, the size of d1 in fig. 1 is greatly reduced, which is beneficial for the implementation of the narrow bezel of the hard screen, in addition, by providing that the first substrate 1 includes at least two third surfaces C, the signal lines 3 electrically connected with the connecting portions 2 are routed through the third surfaces C, the signal lines 3 formed on the third surfaces C when the signal lines 3 on the first surface a are manufactured may be incomplete, because third surface C is the surface of slope, be favorable to mending signal line 3 on the third surface C when making connecting portion 2 on the second surface B, greatly reduced the probability of 3 broken strings of signal line on the third surface C, and then reduced the probability of 3 broken strings of signal line, and the setting up of third surface C has optimized the radian of the second surface B of first substrate 1 to first surface A transition, has further reduced the probability of broken strings of signal line 3.
Optionally, an included angle between two adjacent third surfaces C is greater than or equal to 20 ° and less than 80 °, so that the third surfaces C optimize the radian of the transition from the second surface B of the first substrate 1 to the first surface a, further reduce the wire breakage probability of the signal wire 3, facilitate improvement of uniformity of change of bending angles of the first substrate 1 from the second surface B to the third surface C and from the third surface C to the first surface a, avoid abrupt change of the bending angles of the first substrate 1 from the second surface B to the third surface C and from the third surface C to the first surface a, and further reduce influence of the wire breakage of the signal wire 3 on the display effect of the display panel.
Alternatively, the included angle between adjacent third surfaces C, the included angle between the third surface C connected to the first surface a and the first surface a, and the included angle between the third surface C connected to the second surface B and the second surface B may be set to be equal.
As shown in fig. 1, by exemplarily providing the first substrate 1 to include two third surfaces C, an included angle between the first surface a and the third surface C1, an included angle between the third surface C1 and the third surface C2, and an included angle between the third surface C2 and the second surface B may all be set to be equal, and by providing the first substrate 1 to include at least two third surfaces C, an included angle between adjacent third surfaces C, an included angle between the third surface C connected to the first surface a and the first surface a, and an included angle between the third surface C connected to the second surface B and the second surface B are equal, a circular arc degree of the first surface a transitioning to the second surface B is further optimized, a probability of the signal line 3 breaking is further reduced, and further, an influence of the signal line 3 breaking on a display effect of the display panel is reduced.
Optionally, with reference to fig. 1, the display panel may further include a flexible circuit board 4, the first portion 41 of the flexible circuit board 4 is provided with a plurality of pads (not shown in the figure), the pads are electrically connected to the connection portions 2 on the second surface C of the first substrate 1 correspondingly, and the second portion 42 of the flexible circuit board 4 is bent to a surface of the first substrate 1 opposite to the first surface a. Specifically, a driving chip may be disposed on the flexible circuit board 4, and the driving chip transmits the display signal to the connecting portion 2 disposed on the second surface B of the first substrate 1 through the flexible circuit board 4 and the plurality of pads on the first portion 41 of the flexible circuit board 4, so as to transmit the display signal to the display panel. The driving chip can be disposed on the second portion 42 of the flexible circuit board 4, and the second portion 42 of the flexible circuit board 4 is bent to the surface of the first substrate 1 opposite to the first surface a, so that the driving chip is also bent to the surface of the first substrate 1 opposite to the first surface a, that is, the lower surface of the first substrate 1, thereby further reducing the width of the non-display area NAA of the display panel along the setting direction XX' of the non-display area NAA relative to the display area AA, and facilitating the implementation of the hard-screen narrow bezel. In addition, the display panel may further include a first flexible circuit board 40, and the flexible circuit board 4 may be electrically connected to the first flexible circuit board 40, and the first flexible circuit board is fixed to the lower surface of the first substrate 1 by a fixing structure 400.
Fig. 4 is a schematic flow chart of a manufacturing method of a display panel according to an embodiment of the present invention, the manufacturing method is used for manufacturing the display panel according to the above embodiment, and as shown in fig. 4, the manufacturing method of the display panel includes:
s10, forming a first substrate; wherein the first substrate forms at least two third surfaces via a chamfering process.
With reference to fig. 1 to fig. 3, a first substrate 1 is formed, and at least two third surfaces C may be formed by performing a chamfering process on the first substrate 1, optionally, fig. 5 is a flowchart illustrating a method for manufacturing the first substrate according to an embodiment of the present invention, and as shown in fig. 5, forming the first substrate includes:
s101, providing a second substrate, wherein the second substrate corresponds to a plurality of display panels.
Specifically, as shown in fig. 6, a second substrate 5 is provided, the second substrate 5 being a substrate corresponding to a plurality of display panels, and a portion between two broken lines in fig. 6 corresponds to one display panel.
And S102, performing a chamfering process on the part, corresponding to each display panel, of the second substrate to form at least two third surfaces.
Specifically, as shown in fig. 7, a chamfering process is performed on a portion of the second substrate 5 corresponding to each display panel to form at least two third surfaces C, where the first substrate 1 exemplarily providing the display panel includes two third surfaces C, and then the chamfering may be performed on corresponding positions of the second substrate 5 using the display panel as a processing unit to form the chamfered shape in fig. 7, where the chamfered surface is the third surface C corresponding to the first substrate 1.
S103, cutting the second substrate along a direction vertical to the second substrate to form a plurality of first substrates; wherein the cutting location is at the junction of the second surface and the at least two third surfaces.
Specifically, as shown in fig. 8, the second substrate 5 is cut along a direction perpendicular to the second substrate 5 to form a plurality of first substrates 1, the cutting position is located at a junction of the second surface B and at least two third surfaces C, here, taking the first substrate 1 of the display panel including only two third surfaces C as an example, the second substrate 5 is cut along a dotted line position in fig. 7 to form a plurality of first substrates 1 shown in fig. 8, and the cut first substrates 1 have the second surface B perpendicular to the first substrate 1 and the third surface C connecting the first surface a and the second surface B.
Optionally, before cutting the second substrate in a direction perpendicular to the second substrate to form a plurality of first substrates, the method for manufacturing a display panel may further include forming a second patterned structure on the first surface and a third surface of the second substrate corresponding to each of the display panel portions, the second patterned structure constituting at least a portion of the signal lines.
Specifically, referring to fig. 1, 2 and 7, before the second substrate 5 is cut in a direction perpendicular to the second substrate 5 to form a plurality of first substrates 1, a chamfering process has been performed on a portion of the second substrate 5 corresponding to each display panel to form a third surface C of the first substrate 1, and a second patterned structure 62 may be formed on the first surface a and the third surface C of the second substrate 5 corresponding to each display panel portion, that is, the second patterned structure 62 is formed on the chamfered slope and the first surface a of the first substrate 1 connecting the chamfered slopes, and the second patterned structure 62 constitutes at least a portion of the signal line 3 connecting the connecting portions 2 of the second surface B, that is, the portion of the signal line 3 is completed before the second substrate 5 is cut to form the first substrate 1.
S11, forming a first patterned structure on the second surface of the first substrate; wherein the first patterned structure at least constitutes the connecting portion.
Specifically, with reference to fig. 1 and 3 and fig. 8, after the second substrate 5 is cut to form the first substrate 1, the second surface B of the first substrate 1 is exposed, the first patterned structure 61 is formed on the second surface B of the first substrate 1, the first patterned structure 61 at least constitutes the connection portion 2, and at least a portion of the signal line 3 electrically connected to the connection portion 2 may also be formed on the second surface B, so that the first patterned structure 61 constitutes the connection portion 2 and the portion of the signal line 3.
Alternatively, with reference to fig. 1 to 3 and fig. 7 and 8, when the first patterned structure 61 is formed on the second surface B of the first substrate 1, a repair line may be formed on at least a portion of the third surface C of the first substrate 1, the repair line constituting at least a portion of the signal line 3 on the third surface C. Specifically, before the second substrate 5 is cut to form the first substrate 1, when the second patterned structure 62 is formed on the second substrate 5 corresponding to the first surface a and the third surface C of each display panel portion, since the third surface C is an inclined surface, there may be a possibility that the third surface C cannot form the complete signal line 3 as shown in fig. 2, so that the signal line 3 electrically connected to the connection portion 2 is disconnected, which affects the normal display effect of the display panel.
After the second substrate 5 is cut to form a plurality of first substrates 1, the second surface B of the first substrate 1 is exposed, and due to the arrangement of the chamfer, namely, when the first patterning structure 61 of the second surface B is manufactured, the third surface C is arranged, the incomplete signal line 3 on the third surface C can be repaired, so that the third surface C forms the complete signal line 3 shown in fig. 2, the line breaking probability of the signal line 3 electrically connected with the connecting part 2 is greatly reduced, and the influence of the line breaking of the signal line 3 on the display effect of the display panel is further reduced.
Fig. 9 is a schematic diagram illustrating another method for manufacturing a display panel according to an embodiment of the present invention, which is based on the method for manufacturing a display panel shown in fig. 4, and after forming a first patterned structure on a second surface of a first substrate, the method for manufacturing a display panel further includes attaching a first portion of a flexible circuit board to the second surface of the first substrate; the bonding pad arranged on the first part of the flexible circuit board is electrically connected with the connecting part correspondingly; bending the second portion of the flexible circuit board to a surface of the first substrate opposite to the first surface, as shown in fig. 9, the manufacturing method includes:
s20, forming a first substrate; wherein the first substrate forms at least two third surfaces via a chamfering process.
S21, forming a first patterned structure on the second surface of the first substrate; wherein the first patterned structure at least constitutes the connecting portion.
S22, attaching the first part of the flexible circuit board to the second surface of the first substrate; the bonding pad arranged on the first part of the flexible circuit board is electrically connected with the connecting part correspondingly.
Specifically, with reference to fig. 1 to 3, the display panel may further include a flexible circuit board 4, a first portion 41 of the flexible circuit board 4 is provided with a plurality of pads, the first portion 41 of the flexible circuit board 4 is attached to the second surface B of the first substrate 1, that is, the pads of the first portion 41 of the flexible circuit board 4 are correspondingly electrically connected to the connecting portion 2, a driving chip may be disposed on the flexible circuit board 4, and the driving chip transmits a display signal to the connecting portion 2 disposed on the second surface B of the first substrate 1 through the flexible circuit board 4 and the plurality of pads of the first portion 41 of the flexible circuit board 4, so as to transmit the display signal to the display panel.
And S23, bending the second part of the flexible circuit board to the surface of the first substrate opposite to the first surface.
Specifically, with reference to fig. 1 to 3, the driving chip may be disposed on the second portion 42 of the flexible circuit board 4, and the second portion 42 of the flexible circuit board 4 is bent to a surface of the first substrate 1 opposite to the first surface a, so that the driving chip is also bent to a surface of the first substrate 1 opposite to the first surface a, that is, a lower surface of the first substrate 1, thereby further reducing a width of the non-display area NAA of the display panel along the non-display area NAA in the setting direction XX' relative to the display area AA, and facilitating implementation of a hard-screen narrow bezel.
The manufacturing method of the display panel provided by the embodiment of the invention enables the display panel to realize the side binding technology, greatly shortens the width of the non-display area NAA of the display panel along the setting direction XX' of the non-display area NAA relative to the display area AA, and is beneficial to realizing the hard-screen narrow frame, in addition, at least two third surfaces C formed by chamfering are beneficial to repairing the signal lines 3 on the third surfaces C when the connecting part 2 on the second surface B is manufactured, and the probability of the disconnection of the signal lines 3 is reduced.
An embodiment of the present invention further provides a display device, and fig. 10 is a schematic structural diagram of the display device provided in the embodiment of the present invention. As shown in fig. 10, the display device 20 includes the display panel 19 according to the above embodiment, so that the display device 20 according to the embodiment of the present invention also has the beneficial effects described in the above embodiment, and further description is omitted here. For example, the display device 20 may be an organic light emitting display device, or may be a liquid crystal display device, the display device 20 may be a mobile phone, or may be an electronic device such as a computer or a wearable device, and the specific form of the display device is not limited in the embodiment of the present invention.
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 illustrated 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 (9)
1. A display panel, comprising:
a display area and a non-display area located on at least one side of the display area;
the display panel further comprises a first substrate, wherein the part of the first substrate corresponding to the non-display area comprises a first surface parallel to the display panel and a second surface perpendicular to the display panel, the second surface is positioned on one side of the first substrate away from the display area, and the thickness of the part of the first substrate covered by the second surface is smaller than that of the part of the first substrate covered by the first surface; wherein a first patterned structure is disposed on a second surface of the first substrate;
the first substrate further comprises at least two third surfaces which are connected with the first surface and the second surface, the display panel further comprises a plurality of connecting parts which are arranged on the second surface, and a plurality of signal wires which extend from the at least two third surfaces to the first surface, each signal wire is of an integral structure, and the connecting parts are fixedly and electrically connected with the corresponding signal wires and transmit display signals through the corresponding signal wires; wherein the first patterned structure constitutes the connection portion and a part of the signal line, and second patterned structures are provided on the first surface and the third surface, the second patterned structures constituting at least a part of the signal line connected to the second surface connection portion; forming a repair line on at least part of a third surface of the first substrate while forming a first patterned structure on the second surface of the first substrate; wherein the repair line constitutes at least a part of the signal line on the third surface.
2. The display panel according to claim 1, wherein an included angle between two adjacent third surfaces is greater than or equal to 20 ° and less than 80 °.
3. The display panel according to claim 1, wherein an included angle between adjacent third surfaces, an included angle between the third surface connected to the first surface and the first surface, and an included angle between the third surface connected to the second surface and the second surface are equal.
4. The display panel according to any one of claims 1 to 3, further comprising:
the first part of the flexible circuit board is provided with a plurality of welding pads, the welding pads are correspondingly and electrically connected with the connecting parts, and the second part of the flexible circuit board is bent to the surface of the first substrate opposite to the first surface.
5. A method of manufacturing a display panel according to any one of claims 1 to 4, the method comprising:
forming a first substrate; the first substrate comprises a first surface and a second surface perpendicular to the first surface, and the thickness of the part of the first substrate covered by the second surface is smaller than that of the part of the first substrate covered by the first surface;
the first substrate forms at least two third surfaces through a chamfering process; wherein the third surface connects the first surface and the second surface, respectively;
forming a first patterned structure on a second surface of the first substrate; wherein the first patterned structure constitutes at least a connection portion; the second surface comprises a plurality of connecting parts, and the connecting parts are connected with the signal wires of the first surface through the third surface.
6. The method according to claim 5, wherein the forming the first substrate comprises:
providing a second substrate; wherein the second substrate is a substrate corresponding to the plurality of display panels;
performing a chamfering process on a portion of the second substrate corresponding to each of the display panels to form the at least two third surfaces;
cutting the second substrate in a direction perpendicular to the second substrate to form a plurality of first substrates; wherein the cutting location is at the junction of the second surface and the at least two third surfaces.
7. The method for manufacturing a display panel according to claim 6, further comprising, before the step of cutting the second substrate in a direction perpendicular to the second substrate to form a plurality of first substrates:
forming a second patterned structure on the first surface and the third surface of the second substrate corresponding to each of the display panel portions; wherein the second patterned structure constitutes at least a part of the signal line.
8. The method for manufacturing a display panel according to any one of claims 5 to 7, further comprising, after forming the first patterned structure on the second surface of the first substrate:
attaching a first portion of a flexible circuit board to a second surface of the first substrate; the bonding pad arranged on the first part of the flexible circuit board is correspondingly and electrically connected with the connecting part;
and bending the second part of the flexible circuit board to the surface of the first substrate opposite to the first surface.
9. A display device comprising the display panel according to any one of claims 1 to 4 or the display panel manufactured by the method for manufacturing a display panel according to any one of claims 5 to 8.
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| CN201910580526.4A CN110297347B (en) | 2019-06-28 | 2019-06-28 | Display panel, manufacturing method thereof and display device |
| PCT/CN2019/130732 WO2020258823A1 (en) | 2019-06-28 | 2019-12-31 | Display panel, fabrication method therefor and display device |
| US17/376,417 US20210343758A1 (en) | 2019-06-28 | 2021-07-15 | Display panel and manufacturing method thereof |
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| CN201910580526.4A CN110297347B (en) | 2019-06-28 | 2019-06-28 | Display panel, manufacturing method thereof and display device |
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| WO2020258823A1 (en) * | 2019-06-28 | 2020-12-30 | 云谷（固安）科技有限公司 | Display panel, fabrication method therefor and display device |
| CN111430406B (en) * | 2020-04-30 | 2022-10-11 | 上海天马微电子有限公司 | Display panel, method of making the same, and display device |
| TWI738533B (en) * | 2020-10-07 | 2021-09-01 | 友達光電股份有限公司 | Display panel and manufacturing method thereof |
| CN114217464A (en) * | 2021-12-17 | 2022-03-22 | 重庆惠科金渝光电科技有限公司 | Display module and display device |
| CN114823770B (en) * | 2022-04-07 | 2025-01-07 | Tcl华星光电技术有限公司 | Display module and manufacturing method thereof, and display device |
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| KR100759413B1 (en) * | 2006-08-03 | 2007-09-20 | 삼성에스디아이 주식회사 | A light emitting device and a liquid crystal display device using the light emitting device as a backlight unit |
| CN102262313B (en) * | 2011-08-02 | 2014-03-05 | 深超光电（深圳）有限公司 | Liquid crystal display device and manufacturing method thereof |
| CN103217845B (en) * | 2013-04-22 | 2015-07-15 | 京东方科技集团股份有限公司 | Lower substrate, manufacturing method thereof, liquid crystal display panel and liquid crystal displayer |
| CN107121854A (en) * | 2017-06-19 | 2017-09-01 | 深圳市华星光电技术有限公司 | Display panel and its manufacture method, display device |
| CN109001943A (en) * | 2018-07-26 | 2018-12-14 | 武汉华星光电技术有限公司 | A kind of display module and preparation method thereof and electronic device |
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