CN108572697B - Display device and method for manufacturing the same - Google Patents
Display device and method for manufacturing the same Download PDFInfo
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- CN108572697B CN108572697B CN201810224003.1A CN201810224003A CN108572697B CN 108572697 B CN108572697 B CN 108572697B CN 201810224003 A CN201810224003 A CN 201810224003A CN 108572697 B CN108572697 B CN 108572697B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
- G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
- H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
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Abstract
The invention discloses a display device and a manufacturing method thereof, and relates to the technical field of display. The display device comprises a display panel, wherein the display panel comprises a display area and a peripheral non-display area; the display panel comprises a light-emitting surface and a back surface which are oppositely arranged; the display panel comprises a bending part and a first frame part which are positioned in the non-display area; the bending part is in a bending state so that the first frame part is positioned at a preset position on one side of the display panel, which is far away from the light-emitting surface; the display device comprises a bending supporting part, wherein the bending supporting part is positioned on one side of the back surface of the display panel, and the bending part is in contact with the surface of the bending supporting part; the display device comprises a bending sensor, and the bending sensor is used for assisting the bending part to bend to a preset position. Compared with the prior art, the bending part can be bent to the preset position, and the reliability of the display device is improved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display device and a method for manufacturing the same.
Background
With the development of display technologies, the demands of users for display devices are more and more diversified.
The display panel provided by the prior art has a bendable characteristic. The display panel is folded and placed in the display device, so that diversified requirements of users can be met, and the display panel is favored by the users.
Therefore, it is an urgent technical problem to improve the reliability of the bendable display panel.
Disclosure of Invention
In view of the foregoing, the present invention provides a display device and a method for manufacturing the same.
The invention provides a display device, which comprises a display panel, a display unit and a control unit, wherein the display panel comprises a display area and a peripheral non-display area; the display panel comprises a light-emitting surface and a back surface which are oppositely arranged; the display panel comprises a bending part and a first frame part which are positioned in the non-display area; the bending part is in a bending state so that the first frame part is positioned at a preset position on one side of the display panel, which is far away from the light-emitting surface; the display device comprises a bending supporting part, wherein the bending supporting part is positioned on one side of the back surface of the display panel, and the bending part is in contact with the surface of the bending supporting part; the display device comprises a bending sensor, and the bending sensor is used for assisting the bending part to bend to a preset position.
The invention provides a manufacturing method of a display device, which comprises the steps of providing a display panel; the display panel comprises a display area and a peripheral non-display area; the display panel comprises a light-emitting surface and a back surface which are oppositely arranged; the display panel comprises a bending part and a first frame part which are positioned in the non-display area; providing a bending support part; the bending support part is positioned on one side of the back surface of the display panel; bending the bending part along the surface of the bending supporting part by using bending equipment, so that the bending part is in contact with the surface of the bending supporting part, and the first frame part is positioned at a preset position on one side of the display panel, which is far away from the light emitting surface; the display device comprises a bending sensor, and the bending sensor is used for assisting the bending part to bend to a preset position.
Compared with the prior art, the display device and the manufacturing method thereof provided by the invention at least realize the following beneficial effects:
in the display device provided by the invention, the display panel comprises a display area and a peripheral non-display area; the display area is used for displaying images, and the non-display area is used for arranging circuits or placing electronic elements. The display panel comprises a light-emitting surface and a back surface which are oppositely arranged, and the light-emitting surface is a surface emitting light of the display device; the non-display area comprises a bending part and a first frame part, wherein the bending part is in a bending state, and the first frame part is positioned at a preset position on one side of the display panel, which is far away from the light-emitting surface; the display device further comprises a bending sensor for assisting the bending area to bend to a predetermined position. Compared with the prior art, the bending sensor is additionally arranged in the display device, the bending sensor adjusts the position filled by the bending supporting part by sensing the change of the electric signal of the bending part during bending and the change of the electric signal and the optical signal between the bending sensor and the bending part, and improves the attaching accuracy of the bending supporting part, so that the bending part can be bent to the preset position and the reliability of the display device is improved
The invention provides a manufacturing method of a display device, which comprises the steps of providing the display device. The manufacturing method of the display device provided by the invention has the beneficial effects of the display device provided by the invention, and is not repeated herein.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic cross-sectional view of a display device provided in the prior art;
fig. 2 is a schematic structural diagram of a display device in a planar state according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of another display device according to an embodiment of the invention;
FIG. 4 is a schematic cross-sectional view of another display device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a display device in a planar state according to an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of the bend support of FIG. 4;
FIG. 7 is a front view of a bending support according to an embodiment of the present invention;
FIG. 8 is a front view of another alternative bend support provided by embodiments of the present invention;
FIG. 9 is a side view of another alternative buckling support according to an embodiment of the present invention;
FIG. 10 is a front view of another alternative bending support according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a display device in a planar state according to another embodiment of the present invention;
FIG. 12 is a structural diagram of a test bend in the display device shown in FIG. 11 in a bent state;
FIG. 13 is a structural diagram of a bent portion of the display device shown in FIG. 11 in a bent state;
FIG. 14 is a flow chart of a method of manufacture provided by an embodiment of the present invention;
fig. 15 to 17 are schematic structural views of a display device manufactured by the manufacturing method provided in fig. 14;
fig. 18 is a schematic structural diagram of a display device manufactured by another manufacturing method according to an embodiment of the present invention;
FIG. 19 is a flow chart of yet another method of manufacture provided by an embodiment of the present invention;
fig. 20 to 25 are schematic structural views of the display device manufactured by the manufacturing method provided in fig. 19.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 1, fig. 1 is a schematic cross-sectional view of a display device provided in the prior art. The prior art is bending the display panel A, which is easy to cause the following problems: due to the error of the attachment of the filler C, when the attachment position of the filler C has an error and is not attached at a predetermined position, the display panel a cannot be bent to the predetermined position, or the display panel a is excessively bent and torn, so that the reliability of the display panel a is reduced.
Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of a display device in a planar state according to an embodiment of the present invention, and fig. 3 is a schematic cross-sectional diagram of another display device according to an embodiment of the present invention. The display device 1000 provided by the embodiment has a display panel 00, wherein the display panel 00 includes a display area AA and a peripheral non-display area BB; the display panel 00 comprises a light emitting surface S1 and a back surface S2 which are oppositely arranged; the display panel 00 includes a bending portion 001 and a first frame portion 002 located in the non-display area BB; the bending portion 001 is in a bending state, so that the first frame portion 002 is located at a preset position on a side of the display panel 00 away from the light emitting surface S1; the display device includes a bending support portion 003, the bending support portion 003 is located on one side of the back surface S2 of the display panel 00, and the surface of the bending support portion 003 contacts the bending portion 001; the display device comprises a bending sensor 004, and the bending sensor 004 is used for assisting the bending part 001 to be bent to a preset position. It should be noted that, in order to clearly illustrate the technical solution of the present embodiment, in the display device shown in fig. 2, the bent portion in the display panel is in a planar state; in the display device shown in fig. 3, the bent portion of the display panel is bent.
The display device provided by the embodiment includes a display panel 00; the display panel 00 includes a display area AA and a non-display area BB, and the non-display area BB may surround the display area AA. The display area AA is used for displaying images, and the non-display area BB is used for arranging a circuit on the display device or folding the non-display area BB to achieve the purpose of narrowing the frame. The display panel 00 includes a light emitting surface S1 and a backlight surface S2, the light emitting surface S1 may be used for displaying light; the backlight surface S2 may be used to attach other components in the display device. The display panel 00 is a flexible substrate that can be bent and folded. The non-display area BB of the display panel includes a bending portion 001 and a first frame portion 002; the bending portion 001 and the first frame portion 002 are bent to a preset position of the back surface S2 of the display panel 00, so that the purpose of narrowing the frame of the display device can be achieved, the bending portion 001 may be used for connecting circuit components, and a circuit structure may also be provided, which is not specifically limited herein.
The display device provided in this embodiment further includes a bending support portion 003, the bending support portion 003 is located on one side of the back surface S2 of the display panel 00, and the bending support portion 003 is in contact with the surfaces of the bending portion 001 and the first frame portion 002; the bending support portion 003 is used to fill a gap formed between the bending portion 001 and the display panel 00 when the bending portion 001 is bent to the display panel back surface S2, so as to enhance the stability of the bending structure.
In this embodiment, the display device includes the bending sensor 004, when the bending portion 001 of the display panel is bent, the electrical signal of the bending sensor 004 is changed by the change of the relative position relationship between the bending support portion 003 and the bending portion 001, and the relative position relationship between the bending support portion 003 and the bending portion 001 can be correspondingly adjusted according to the change of the electrical signal of the bending sensor 004, so that the bending portion 001 reaches the predetermined position.
In some alternative embodiments, please continue to refer to fig. 3, the present embodiment provides a display device, which includes a bending sensor 004, and the bending sensor 004 is located at the bending support portion 003.
In the display device provided in this embodiment, the bend sensor 004 may be located on the surface of the bend supporting portion 003, or may be located inside the bend supporting portion 003. The bending sensor 004 senses the relative position between the bending support 003 and the bending portion 001. When the supporting role is played to display panel at the support portion 003 that buckles, the sensor 004 of buckling that sets up at the support portion 003 that buckles can transmit the signal of buckling, need not to increase extra structure in display panel in order to make the sensor. The bending support 003 may be made of an organic material or an inorganic material; the organic material has certain elasticity and can provide good supporting and buffering effects for the display panel. Since the present embodiment mainly describes the bending function of the bending portion 001 of the display device, the material of the bending support portion 003 is not particularly limited.
Optionally, please refer to fig. 4, fig. 5, fig. 6 and fig. 7, wherein fig. 4 is a schematic cross-sectional view of another display device provided in an embodiment of the present invention, and fig. 5 is a schematic structural view of the display device provided in the embodiment of the present invention in a planar state; FIG. 6 is an enlarged view of a portion of the bend support of FIG. 4; fig. 7 is a front view of a bending support according to an embodiment of the present invention. In the display device provided in this embodiment, the bending portion 001 includes a plurality of first signal lines I; the bending sensor 004 includes a first electrode 004a, and the orthographic projection of the first signal line I to the surface of the first electrode 004a is located in the area of the first electrode 004 a. In order to clearly illustrate the technical solution of the present embodiment, in the display device shown in fig. 5, the bending portion in the display panel is in a planar state; in fig. 6, I' is an orthographic projection of the first signal line I on the surface of the first electrode 004 a. Optionally, the display panel includes a substrate CD, a display function layer OL, and an encapsulation layer TF. The base substrate CD is a flexible substrate, and may be made of a resin material, for example; the display functional layer OL is used to realize the display function of the display panel, for example, the display functional layer OL may include a thin film transistor (not shown in the figure) and an organic light emitting diode (not shown in the figure); the encapsulating layer TF has an air barrier function for protecting the display functional layer OL from moisture, oxygen, impurities, and the like in the air. The display functional layer OL and the encapsulation layer TF cover the display area, and optionally, the encapsulation layer TF may extend to the non-display area.
The bending portion 001 includes a plurality of first signal lines I, and the first signal lines I may generate coupling capacitance with the bending sensor 004 after being powered on. Specifically, the bending sensor 004 includes a first electrode 004a, and the first electrode 004a may generate a coupling capacitance with the plurality of first signal lines I. As the degree of bending of the bending portion changes, the capacitance between the bending portion 001 and the first electrode 004a also changes, and the bending sensor 004 can sense the change of the electrical signal. When the distance between the bending part 001 and the bending sensor 004 is relatively far, the coupling capacitance generated between the bending part 001 and the bending sensor 004 is small; when the distance between the bending part 001 and the bending sensor 004 is relatively close, the coupling capacitance generated between the bending part 001 and the bending sensor 004 is large; that is, as the distance between the bent portion 001 and the bent sensor 004 becomes smaller, the coupling capacitance becomes larger. When the coupling capacitance generated between the bending part 001 and the bending sensor 004 is large, the attaching position of the bending support part 003 needs to be adjusted to the side close to the display panel, that is, the distance between the bending part 001 and the bending support part is increased; when the generated coupling capacitance is small, the attachment position of the bending support 004 needs to be adjusted to a side away from the display panel, that is, the distance between the bending portion 001 and the bending support 006 needs to be reduced. The orthographic projections of the plurality of first signal lines I on the surface of the first electrode 004a may be arranged in parallel, and this embodiment does not specifically limit this. Optionally, the display device further includes a lower film 20, and the lower film 20 may protect the display device and may make the fitting of the bending support 004 and the display device tighter.
In some alternative embodiments, the bending support portion 003 includes a first contact surface S3, two side surfaces S disposed oppositely; the first contact surface S3 is in contact with the bent part 001, and the side surface S is connected with the first contact surface S3; the bending sensor 004 includes a conductive pad 005, the conductive pad 005 is electrically connected to the first electrode 004a, and the conductive pad 005 is located on the side surface S.
In this embodiment, the bending sensor 004 includes a conductive pad 005, the conductive pad 005 is located on the side surface S of the bending support portion 003, optionally, the conductive pad 005 may be located on any one of the two side surfaces S, or the conductive pad 005 may be disposed on both of the two side surfaces S. Among them, the conductive pad 005 is electrically connected to the first electrode 004a, and the conductive pad 005 is used to transmit an electrical signal to the bending sensor 004.
In some optional embodiments, please refer to fig. 4 and 5, and fig. 5 is a schematic structural diagram of a display device in a planar state according to an embodiment of the present invention. In this embodiment, the display device includes a plurality of data lines D arranged in parallel, and the first signal line I is electrically connected to the data lines D.
In this embodiment, the display area AA may include a plurality of pixels (not shown), and the data lines D are used for transmitting data signals to the pixels. The first signal line I is located in the non-display area BB, and the first signal line I and the data line D are electrically connected. Optionally, the DEMUX circuit 200 may be disposed between the first signal line I and the data line D, which is not particularly limited in this embodiment. Generally, a chip or a flexible circuit board is bound on the display panel, and the data line D may be electrically connected to the chip or the flexible circuit board through a first signal line I, that is, the first signal line I is a connection line of the data line D. Specifically, the chip may transmit an electrical signal to the data line D through the first signal line I, or the flexible circuit board may transmit an electrical signal to the data line D through the first signal line I. In this embodiment, the connection line of the multiplexing data line D is used as the first signal line I, and the coupling capacitors between the first signal lines I and the first electrodes 004a are obtained to sense the relative position relationship between the bending portion 001 and the bending support portion 006, so that it is not necessary to provide an additional structure at the bending portion 001 for assisting the work of the bending sensor 004, thereby simplifying the structure of the display panel, reducing the cost of the display panel, and improving the manufacturing efficiency of the display panel.
In some alternative embodiments, referring to fig. 2 and fig. 3, in the display device provided in the embodiments of the present invention, the bending sensor 004 is a position sensor.
In the display device provided in this embodiment, the position sensor disposed in the bending support portion 003 can acquire the position information of the bending support portion 003 and the bending portion 001, and then adjust the position of the attached display panel of the bending support portion 003 through the bending device, and when the coupling capacitance generated between the bending portion 001 and the bending sensor 004 is large, the attachment position of the bending support portion 003 needs to be adjusted to the side close to the display panel, that is, the distance between the bending portion 001 and the bending support portion is increased; when the generated coupling capacitance is small, the attachment position of the bending support 004 needs to be adjusted to a side away from the display panel, that is, the distance between the bending portion 001 and the bending support 006 needs to be reduced. Therefore, the bending part 001 can be bent to a preset position, and the reliability of the display device is improved.
Optionally, please refer to fig. 2, fig. 3 and fig. 8 in combination, and fig. 8 is a front view of another bending support portion according to an embodiment of the present invention. The position sensor is a pressure sensor f10, and the pressure sensor is located on the surface of the bending support 003 near the bending part 001.
The position sensor provided in this embodiment is a pressure sensor f10, and a pressure sensor f10 provided in the display device determines the degree of bending by sensing the pressure at the time of bending at the bending portion 001. For example, when the bending portion 001 is bent a long distance away from the bending support portion 004, the bending sensor 004 senses less pressure; when the bending portion 001 is tightly attached to the bending support portion 003 after being bent, the pressure applied to the bending sensor 004 is large. Pressure sensor gives the equipment of buckling with signal transmission, and the laminating display panel position of rethread equipment of buckling adjustment support portion 003 to make kink 001 buckle to preset the position, improve display device's reliability. Optionally, the bent supporting portion 003 includes a first contact surface S3 and two opposite side surfaces S. Optionally, a pad is disposed on either or both of the two sides S, and the pad is electrically connected to the pressure sensor f10 and can transmit an electrical signal to the pressure sensor f 10.
Optionally, the pressure sensor f10 is a silicon chip. The change of the pressure can enable carriers in the silicon wafer to migrate, the migration of the carriers can generate corresponding current, the current and the pressure are linearly related, and the pressure sensed by the silicon wafer can be obtained by detecting the change of the current. The silicon chip is used as a pressure sensor, so that the structure is simple; in addition, silicon is a commonly used material in the display panel, and the manufacturing process is mature, so that the process difficulty of manufacturing the pressure sensor can be reduced.
In some alternative embodiments, please refer to fig. 9, fig. 10, fig. 9 is a side view of another bending support portion provided in the embodiments of the present invention; fig. 10 is a front view of another bending support part provided in the embodiment of the present invention. The position sensor provided in this embodiment is a light sensor including an emitter E and a receiver R.
The present embodiment provides a display device in which the transmitter E and the receiver R may slightly protrude from the first contact surface S3, the transmitter E being disposed on one side surface S, and the receiver R being disposed on the other side surface S. The light emitted by the emitter E propagates along the very close distance to the first contact surface S3, and when the receiver R can sense the light signal of the emitter E, the bent part 001 does not cover the first contact surface S3; when the bent portion 001 covers the first contact surface S3, the optical signal emitted by the emitter E is blocked, and the receiver R does not receive the optical signal. The light sensor senses the sent light signal, and then the bending equipment receives the sensing signal in the light sensor, so that the bending state of the bending part 001 in the display device is adjusted, the bending part can be bent to a preset position, and the reliability of the display device is improved.
In some alternative embodiments, please continue to refer to fig. 11, where fig. 11 is a schematic structural diagram of a display device in a planar state according to another embodiment of the present invention. The display panel 00 includes a test bending part 006 located in the non-display area BB, and the test bending part 006 and the bending part 001 are arranged in parallel; the test bend 006 includes a bend sensor 004; the bend sensor 004 comprises at least one test track T.
In this embodiment, the non-display area BB includes a bending portion 001 and a test bending portion 006, the test bending portion 006 and the bending portion 001 are disposed in parallel, and the test bending portion 006 and the bending portion 001 can be bent in the display panel respectively. The test bending part 006 includes a bending sensor 004, and the bending sensor 004 has at least one test trace T. The test routing line T has a fixed resistance before bending, and the resistance of the test routing line T before bending and after bending of the test bending part 006 can be detected through the bending device. When the resistance in the test trace T is detected to be too large, that is, the substrate at the bent position of the test bending part 006 is broken due to the excessive bending of the test bending part 006; when the resistance in the test trace T is too small, the test bending part 006 is not bent sufficiently to reach the preset position; when the resistance in the test trace T is not detected, that is, the test bend 006 is bent too much to break at the bend of the test bend 006. The bending equipment judges the bending degree and the bending state of the bending part 001 by detecting the resistance in the test wiring T, so that the attaching accuracy of the bending supporting part 003 on the display panel is adjusted. When the resistance in the test trace T is relatively small, the bending equipment adjusts the bending supporting part 003 towards the direction far away from the display panel; when the resistance in the test wiring is too large or cannot be detected, the bending equipment adjusts the position of the bending supporting part 003 towards the direction close to the display panel.
Specifically, referring to fig. 12 and 13, fig. 12 is a schematic structural diagram of a test bent portion in a bent state in the display device shown in fig. 11, and fig. 13 is a schematic structural diagram of a bent portion in a bent state in the display device shown in fig. 11. Referring to fig. 12, the test bending portion 006 is bent to obtain the bending condition of the test bending portion 006. For example, when the resistance in the test trace T is too small, the test bend 006 is not bent sufficiently to reach the predetermined position. Referring to fig. 13, the position of the bending supporting portion 003 is adjusted to adjust the bending position of the bending portion 001, so that the bending portion 001 is bent to a predetermined position and the reliability of the display device is improved.
It should be noted that the display device provided in the embodiment of the present invention may be a display device having a display function, such as a mobile phone, a computer, a television, and a vehicle-mounted display device, and the present invention is not particularly limited thereto.
The display device provided by the invention can be manufactured by various methods. Next, the present invention will be described with reference to a specific method for manufacturing a display device.
Please refer to fig. 14. The embodiment provides a manufacturing method of a display device, which includes:
please refer to fig. 2 and fig. 15 in combination, step ST 1: providing a display panel 00; the display panel 00 includes a display area AA and a peripheral non-display area BB; the display panel 00 comprises a light emitting surface S1 and a back surface S2 which are oppositely arranged; the display panel 00 includes a bending portion 001 and a first frame portion 002 located in the non-display area BB;
referring to fig. 2 and 16, step ST 2: providing a bending support portion 003; the bending support portion 003 is located on the rear surface S2 side of the display panel 00;
please refer to fig. 2 and 17 in combination, step ST 3: bending the bending part 001 along the surface of the bending support part 003 by using a bending device (not shown in the figure), so that the bending part 001 is in surface contact with the bending support part 003, and the first frame part 002 is located at a preset position on the side of the display panel away from the light emitting surface S1; the display device comprises a bending sensor 004, and the bending sensor 004 is used for assisting the bending part 001 to be bent to a preset position.
In the method for manufacturing a display device according to this embodiment, the bending support portion 003 is in contact with the surfaces of the bending portion 001 and the first frame portion 002, and the bending support portion 003 is used to fill a gap formed between the bending portion 001 and the display panel 00 when the bending portion 001 is bent to the display panel rear surface S2, so that the stability of the bending structure can be enhanced.
In this embodiment, the display device includes the bending sensor 004, when the bending portion 001 of the display panel is bent, the electrical signal of the bending sensor 004 is changed by the change of the relative position relationship between the bending support portion 003 and the bending portion 001, and the relative position relationship between the bending support portion 003 and the bending portion 001 can be correspondingly adjusted according to the change of the electrical signal of the bending sensor 004, so that the bending portion 001 reaches the preset position.
In some alternative embodiments, please refer to fig. 4, fig. 5, fig. 6, fig. 7 and fig. 18 in combination; the bending sensor 004 is positioned on the bending support portion 003; the bending part 001 includes a plurality of first signal lines I; the bending sensor 004 includes a first electrode 004a, and the orthographic projection of the first signal line I to the surface of the first electrode 004a is located in the area of the first electrode 004 a. Use equipment of buckling to buckle the kink 001 along the surperficial bending support portion 003 surface of buckling, make kink 001 and the contact of bending support portion 003 surface to make first frame portion 002 be located the preset position that the display panel deviates from one side of plain noodles S1, include: transmitting the pulse signal VM to the plurality of first signal lines I, receiving the sensing signal of the first electrode 004a, and analyzing the sensing signal to obtain the relative positional relationship between the bending part 001 and the bending support part 003; the bending device adjusts the position of the bending part 001 according to the relative position relationship between the bending part 001 and the bending support part 003.
In this embodiment, the bending sensor 004 may be located on the surface of the bending supporter 003, or may be located inside the bending supporter 003. The bending sensor 004 senses the relative position between the bending support 003 and the bending portion 001. When the supporting role is played to display panel at the support portion 003 that buckles, the sensor 004 of buckling that sets up at the support portion 003 that buckles can transmit the signal of buckling, need not to increase extra structure in display panel in order to make the sensor.
The bending portion 001 includes a plurality of first signal lines I, and the first signal lines I may generate coupling capacitance with the bending sensor 004 after receiving the pulse signal VM. When the coupling capacitance generated between the bending part 001 and the bending sensor 004 is large, the attaching position of the bending support part 003 needs to be adjusted to the side close to the display panel, that is, the distance between the bending part 001 and the bending support part is increased; when the generated coupling capacitance is small, the attachment position of the bending support 004 needs to be adjusted to the side away from the display panel, that is, the distance between the bending portion 001 and the bending support I006 needs to be reduced. The orthographic projections of the plurality of first signal lines I on the surface of the first electrode 004a may be arranged in parallel, and this embodiment does not specifically limit this.
In this embodiment, the bending apparatus transmits the pulse signal VM to the plurality of first signal lines I and receives the sensing signal of the first electrode 004a, and the bending apparatus analyzes the sensing signal to obtain the relative positional relationship between the bending portion 001 and the bending support portion 003; the bending device adjusts the bending degree and position of the bending portion 001 according to the relative position relationship between the bending portion 001 and the bending support portion 003, so as to bend the display device to a predetermined position and improve the reliability of the display device.
In some alternative embodiments, please refer to fig. 2 and fig. 3 in combination, in the manufacturing method provided in this embodiment, the bending sensor 004 is located at the bending support portion 003; bend sensor 004 is a position sensor.
In the manufacturing method of the display device according to the present embodiment, the position sensor provided in the bending support portion 003 can acquire the position information of the bending support portion 003 and the bending portion 001, and further adjust the position of the display panel attached to the bending support portion 003 by the bending device. Therefore, the bending part can be bent to a preset position, and the reliability of the display device is improved.
Alternatively, the position sensor may be a pressure sensor or a light sensor. In particular, the method of manufacturing a semiconductor device,
referring to fig. 2, fig. 3 and fig. 8, alternatively, the position sensor provided in the present embodiment is a pressure sensor, and the pressure sensor is located on the surface of the bending support portion 003 near the bending portion 001; use equipment of buckling to buckle the kink 001 along the surperficial bending support portion 003 surface of buckling, make kink 001 and the contact of bending support portion 003 surface to make first frame portion 002 be located the preset position that the display panel deviates from one side of plain noodles S1, include: the bending apparatus adjusts the position of the bending part 001 according to the signal of the pressure sensor.
In this embodiment, the position sensor is a pressure sensor f10, and a pressure sensor f10 provided in the display device senses the pressure at the time of bending the bending portion 001 to determine the degree of bending. For example, when the bending portion 001 is bent a long distance away from the bending support portion 004, the bending sensor 004 senses less pressure; when the bending portion 001 is tightly attached to the bending support portion 003 after being bent, the pressure applied to the bending sensor 004 is large. Pressure sensor gives the equipment of buckling with signal transmission, and the laminating display panel position of the supporting part 003 that buckles is adjusted to the rethread equipment of buckling to make kink 001 buckle to preset the position, avoid causing the waste of raw and other materials, can improve the qualification rate and the reliability of product. Optionally, the bent supporting portion 003 includes a first contact surface S3 and two opposite side surfaces S. Pads are provided on either or both sides S, and the pads are electrically connected to the pressure sensor f10, and can transmit an electrical signal to the pressure sensor f 10.
Alternatively, referring to fig. 9 and 10, the position sensor is a light sensor, and the light sensor includes a transmitter E and a receiver R; bending sensor 004 is used for assisting bending portion 001 to bend to a preset position, and specifically comprises: after the bending device is used to bend the bending part 001 along the surface of the bending support 003 to make the bending part 001 contact the surface of the bending support 003, the light transmission path between the emitter E and the receiver R is blocked by the bending part 001 to send a stop signal, and the bending device stops bending the bending part 001 according to the stop signal.
In the method for manufacturing a display device provided in this embodiment, please refer to fig. 9 and fig. 10. The transmitter E and receiver R may protrude slightly beyond the first contact surface S3. The emitter E is arranged on one side surface S, the receiver R is arranged on the other side surface S, light emitted by the emitter E propagates along a very short distance from the first contact surface S3, and when the receiver R can sense an optical signal of the emitter E, the bent part 001 does not cover the first contact surface S3; when the optical signal emitted by the emitter E is blocked, the bent portion 001 covers the first contact surface S3, and the receiver R does not receive the optical signal. The light sensor senses the sent light signal, and then the bending equipment receives the sensing signal in the light sensor, so that the bending state of the bending part 001 in the display device is adjusted, the bending part can be bent to a preset position, and the reliability of the display device is improved.
In some alternative embodiments, referring to fig. 11, 12 and 13, the display panel includes a test bending part 006 located in the non-display area BB, and the test bending part 006 and the bending part 001 are arranged in parallel; the test bend 006 includes a bend sensor 004; the bend sensor 004 comprises at least one test track T.
In this embodiment, bending the bending portion 001 along the surface of the bending supporting portion 003 by using a bending device, so that the bending portion 001 contacts the surface of the bending supporting portion 003, and the first frame portion 001 is located at a preset position on a side of the display panel departing from the light emitting surface S1, including: the bending apparatus bends the test bending part 006; detecting the resistance between the two end parts of the test wire T; the bending device adjusts the position of the bending part 001 according to the resistance between the two ends of the test trace T.
In this embodiment, the non-display area BB includes a bending portion 001 and a test bending portion 006, the test bending portion 006 and the bending portion 001 are disposed in parallel, and the test bending portion 006 and the bending portion 001 can be bent in the display panel respectively. The test bending part 006 includes a bending sensor 004, and the bending sensor 004 has at least one test trace T. The test routing line T has a fixed resistance before bending, and the resistance of the test routing line T before bending and after bending of the test bending part 006 can be detected through the bending device. When the resistance of the test trace T is detected to be too large, that is, the substrate at the bent position of the test bending part 006 is broken due to the excessive bending of the test bending part 006; when the T resistance of the test trace is too small, the test bending part 006 is not bent sufficiently to reach the preset position; when the resistance of the test trace is not detected, that is, the test bend 006 is bent too much to break at the bend of the test bend 006. The bending equipment judges the bending degree and the bending state of the bending part 001 by detecting the resistance of the test wiring T, so that the attaching accuracy of the bending support part 003 on the display panel is adjusted. When the resistance of the test trace T is relatively small, the bending equipment adjusts the bending support portion 003 in the direction away from the display panel; when the resistance of the test trace T between the two end portions a and b is too large or the resistance is not detected, the bending device adjusts the position of the bending support portion 003 towards the direction close to the display panel. The bending position of the bending portion 001 is adjusted after the test bending portion 006 is bent and the bending condition of the test bending portion 006 is obtained, so that the bending portion can be bent to a preset position and the reliability of the display device is improved.
In some alternative embodiments, please refer to fig. 19. In this embodiment, before bending the bending portion 001 along the surface of the bending support portion 003 by using a bending device, so that the bending portion 001 contacts the surface of the bending support portion 003, and the first frame portion 002 is located at a preset position on a side of the display panel 00 departing from the light emitting surface S1, the method further includes:
referring to fig. 20 in combination, step ST 01: providing a glass substrate 02;
referring to fig. 21, step ST 02: forming a display mother substrate 0 on a glass substrate 02;
referring to fig. 22 in combination, step ST 03: attaching a film 03 to one side of a light emitting surface S1 of the display mother board 0;
referring to fig. 23 in combination, step ST 04: cutting the display mother board 0 to form a plurality of display panels 00;
referring to fig. 24 in combination, step ST 05: separating the display panel 00 and the glass substrate 02 using laser;
referring to fig. 25 in combination, step ST 06: the lower film 007 is attached to one side of the back surface of the display panel 00.
In this embodiment, the display device includes a glass substrate 02, a display mother board 0, an upper film 03, and a lower film 007. Among them, the glass substrate 02 provides a substrate on which a display mother substrate can be fabricated, and the upper and lower films 03 and 007 can protect the display panel or can be used to transmit a specific polarized light through the display panel 00; it should be noted that the arrangement manner of the display panels 00 formed by cutting on the display motherboard 0 and the number of the display panels 00 may be set according to specific manufacturing conditions, and are not described herein again. Only one display mother board 0 is illustrated in fig. 23 as being cut into nine display panels 00, and dotted lines in the display mother board 0 are illustrated as cut lines. After at least a part of the structure of the display panel 00 is manufactured, the display panel 00 and the glass substrate 02 are separated by using a laser technique, so that the display panel 00 is flexible and bendable. In fig. 20 to 25, 00 denotes a display panel formed by cutting a mother substrate, 021 denotes a glass substrate after cutting, and 031 denotes an upper film in the display panel after cutting.
The display device manufactured by the manufacturing method according to the embodiment of the present invention may be a display device having a display function, such as a mobile phone, a computer, a television, and a vehicle-mounted display device, and the present invention is not particularly limited thereto. The manufacturing method of the display device provided by the embodiment of the invention has the beneficial effects of the display device provided by the embodiment of the invention, and the description is not repeated here.
As can be seen from the above embodiments, the display device and the manufacturing method thereof according to the present invention at least achieve the following advantages:
in the display device provided by the invention, the display panel comprises a display area and a peripheral non-display area; the display area is used for displaying images, and the non-display area is used for arranging circuits or placing electronic elements. The display panel comprises a light-emitting surface and a back surface which are oppositely arranged, and the light-emitting surface is a surface emitting light of the display device; the non-display area comprises a bending part and a first frame part, wherein the bending part is in a bending state, and the first frame part is positioned at a preset position on one side of the display panel, which is far away from the light-emitting surface; the display device further comprises a bending sensor for assisting the bending area to bend to a predetermined position. Compared with the prior art, the bending sensor is additionally arranged in the display device, the bending sensor adjusts the position filled by the bending supporting part by sensing the change of an electric signal of the bending part during bending and the change of the electric signal and an optical signal between the bending sensor and the bending part, so that the laminating accuracy of the bending supporting part is improved, the bending part can be bent to a preset position, and the reliability of the display device is improved.
The invention provides a manufacturing method of a display device, which comprises the steps of providing the display device. The manufacturing method of the display device provided by the invention has the beneficial effects of the display device provided by the invention, and is not repeated herein.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (16)
1. A display device, comprising:
a display panel including a display area and a peripheral non-display area; the display panel comprises a light emitting surface and a back surface which are oppositely arranged;
the display panel comprises a bending part and a first frame part which are positioned in the non-display area; the bending part is in a bending state, so that the first frame part is positioned at a preset position on one side of the display panel, which is far away from the light-emitting surface;
the display device comprises a bending supporting part, the bending supporting part is positioned on one side of the back surface of the display panel, and the bending part is in contact with the surface of the bending supporting part;
the display device comprises a bending sensor, the bending sensor is located on the bending supporting portion, and the bending sensor is used for assisting the bending portion to bend to the preset position.
2. The display device according to claim 1,
the bending part comprises a plurality of first signal lines;
the bending sensor comprises a first electrode, and the orthographic projection of the first signal line to the surface of the first electrode is located in the area of the first electrode.
3. The display device according to claim 2,
the bending support part comprises a first contact surface and two oppositely arranged side surfaces, the first contact surface is in contact with the bending part, and the side surfaces are connected with the first contact surface;
the bending sensor comprises a conductive bonding pad, the conductive bonding pad is electrically connected with the first electrode, and the conductive bonding pad is located on the side face.
4. The display device according to claim 2,
the display area comprises a plurality of data lines arranged in parallel, and the first signal lines are electrically connected with the data lines.
5. The display device according to claim 1,
the bending sensor is a position sensor.
6. The display device according to claim 5,
the position sensor is a pressure sensor, and the pressure sensor is positioned on the surface of the bending support part close to the bending part.
7. The display device according to claim 6,
the pressure sensor is a silicon chip.
8. The display device according to claim 5,
the position sensor is a light sensor which comprises an emitter and a receiver.
9. The display device according to claim 1,
the display panel comprises a test bending part positioned in the non-display area, and the test bending part and the bending part are arranged in parallel;
the test bend comprises the bend sensor; the bend sensor includes at least one test trace.
10. A method of manufacturing a display device, comprising:
providing a display panel; the display panel comprises a display area and a peripheral non-display area; the display panel comprises a light emitting surface and a back surface which are oppositely arranged; the display panel comprises a bending part and a first frame part which are positioned in the non-display area;
providing a bending support part, wherein the bending support part is positioned on one side of the back surface of the display panel;
bending the bent part along the surface of the bending support part by using bending equipment, so that the bent part is in contact with the surface of the bending support part, and the first frame part is positioned at a preset position on one side of the display panel, which is far away from the light emitting surface;
the display device comprises a bending sensor, the bending sensor is located on the bending supporting portion, and the bending sensor is used for assisting the bending portion to bend to the preset position.
11. The manufacturing method according to claim 10,
the bending part comprises a plurality of first signal lines;
the bending sensor comprises a first electrode, and the orthographic projection of the first signal line to the surface of the first electrode is positioned in the area of the first electrode;
the bending device is used for bending the bending part along the surface of the bending supporting part, so that the bending part is in contact with the surface of the bending supporting part, and the first frame part is located at a preset position on one side of the display panel, which is deviated from the light emitting surface, and the bending device comprises:
transmitting pulse signals to a plurality of first signal lines, receiving sensing signals of the first electrodes, and analyzing the sensing signals to obtain the relative position relation between the bending part and the bending supporting part; and the bending equipment adjusts the position of the bending part according to the relative position relationship between the bending part and the bending supporting part.
12. The manufacturing method according to claim 10,
the bending sensor is a position sensor.
13. The manufacturing method according to claim 12,
the position sensor is a pressure sensor, and the pressure sensor is positioned on the surface of the bending support part close to the bending part;
the bending device is used for bending the bending part along the surface of the bending supporting part, so that the bending part is in contact with the surface of the bending supporting part, and the first frame part is located at a preset position on one side of the display panel, which is deviated from the light emitting surface, and the bending device comprises:
and the bending equipment adjusts the position of the bending part according to the signal of the pressure sensor.
14. The manufacturing method according to claim 12,
the position sensor is a light sensor which comprises an emitter and a receiver;
the bending sensor is used for assisting the bending part to bend to the preset position, and specifically comprises:
and after the bending device is used for bending the bending part along the surface of the bending supporting part to make the bending part contact with the surface of the bending supporting part, a light transmission path between the emitter and the receiver is blocked by the bending part and then sends a stop signal, and the bending device stops bending the bending part according to the stop signal.
15. The manufacturing method according to claim 10,
the display panel comprises a test bending part positioned in the non-display area, and the test bending part and the bending part are arranged in parallel;
the test bend comprises the bend sensor; the bend sensor comprises at least one test trace;
the bending device is used for bending the bending part along the surface of the bending supporting part, so that the bending part is in contact with the surface of the bending supporting part, and the first frame part is located at a preset position on one side of the display panel, which is deviated from the light emitting surface, and the bending device comprises:
the bending equipment bends the test bending part;
detecting the resistance between the two ends of the test wire;
and the bending equipment adjusts the position of the bending part according to the resistance between the two ends of the test wire.
16. The manufacturing method according to claim 10,
before the bending device bends the bending part along the surface of the bending support part, so that the bending part is in contact with the surface of the bending support part, and the first frame part is located at a preset position on one side of the display panel departing from the light emitting surface, the method further comprises the following steps:
providing a glass substrate;
forming a display mother board on the glass substrate;
attaching a film to one side of the light-emitting surface of the display mother board;
cutting the display mother board to form a plurality of display panels;
separating the display panel and the glass substrate using a laser;
and attaching a lower adhesive film to one side of the back surface of the display panel.
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| CN111245979B (en) * | 2018-11-29 | 2021-04-06 | 北京小米移动软件有限公司 | Foldable device and display area determination method |
| CN110459579B (en) * | 2019-08-21 | 2022-01-25 | 京东方科技集团股份有限公司 | Flexible display panel and bending detection method thereof |
| CN110726363B (en) * | 2019-10-14 | 2021-11-02 | 武汉华星光电半导体显示技术有限公司 | Display device and manufacturing method thereof |
| CN111064829B (en) * | 2019-10-29 | 2021-12-28 | 华为技术有限公司 | Display device and terminal equipment |
| TWI741775B (en) * | 2020-09-02 | 2021-10-01 | 友達光電股份有限公司 | Display device |
| CN112071199B (en) * | 2020-09-10 | 2022-06-07 | 武汉华星光电半导体显示技术有限公司 | Display device and electronic apparatus |
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