CN115273666A - Display module and display device - Google Patents
Display module and display device Download PDFInfo
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- CN115273666A CN115273666A CN202210913391.0A CN202210913391A CN115273666A CN 115273666 A CN115273666 A CN 115273666A CN 202210913391 A CN202210913391 A CN 202210913391A CN 115273666 A CN115273666 A CN 115273666A
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- 239000000758 substrate Substances 0.000 claims description 62
- 239000004973 liquid crystal related substance Substances 0.000 claims description 11
- 238000005452 bending Methods 0.000 description 15
- 239000011521 glass Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000004806 packaging method and process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000010408 film Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G02—OPTICS
- 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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—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
- G09F9/335—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 being organic light emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/148—Arrangements of two or more hingeably connected rigid printed circuit boards, i.e. connected by flexible means
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application provides a display module assembly and a display device, and relates to the technical field of display. The display module comprises a display panel, a control panel and a connecting circuit; the display panel comprises a first side edge, the control panel comprises a second side edge, the first end of the connecting circuit is connected to the first side edge, and the second end of the connecting circuit is connected to the second side edge; the control plate can be bent along the direction parallel to the second side edge; the flattening length between the second side edge and the connection points on two opposite sides of the connection circuit is a first length; the flattening length between the first side edge and the connection points on two opposite sides of the connection circuit is a second length; the first length is greater than the second length. The control panel is provided with redundant length on the second side when the flattening state, and when the control panel was crooked, the redundant length that sets up on the control panel can compensate the tensile volume of control panel when crooked.
Description
Technical Field
The application relates to the technical field of display, in particular to a display module and a display device.
Background
For improving the screen occupation ratio, the control panel in the display module needs to be bent to the back of the display panel. When the display panel is a curved display panel, the control panel on the back of the display panel is also in a curved state. And the bending of the control panel easily causes display abnormality.
Disclosure of Invention
The embodiment of the application provides a display module assembly and display device, can solve the crooked unusual problem that leads to showing of control panel.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:
on one hand, the display module comprises a display panel, a control panel and a connecting circuit;
the display panel comprises a first side edge, the control panel comprises a second side edge, the first end of the connecting circuit is connected to the first side edge, and the second end of the connecting circuit is connected to the second side edge;
the control panel is configured to be bendable in a direction parallel to the second side edge;
the flattening length between the second side edge and the connection points on two opposite sides of the connection circuit is a first length; the flattening length between the first side edge and the connection points on two opposite sides of the connection circuit is a second length; the first length is greater than the second length;
the opposite sides of the connection circuit are opposite sides in a direction parallel to the second side.
Optionally, the control panel includes a plurality of sub-control panels arranged at intervals in a direction parallel to the second side edge, and two adjacent sub-control panels are connected by a flexible circuit. The control board is bent through the flexible circuit, the bending amount of each sub-control board is reduced, and further the stretching amount of each sub-control board during bending is reduced, so that the connecting circuit is not easy to distort.
Optionally, the sub-control board comprises a flexible sub-control board. The flexible sub-control board is flexible and easy to bend, so that the flexible sub-control board is not easy to stretch and deform during bending, and the distortion and deformation of a connecting circuit caused by the stretching and deformation during bending are reduced.
Optionally, the flexible sub-control board and the flexible circuit are of an integral structure. After the flexible sub-control board and the flexible circuit are of an integrated structure, the flexible sub-control board and the flexible circuit do not need to be connected through a connector, so that the structure of the control board is simpler, and the assembly difficulty is reduced. Moreover, after the flexible sub-control board and the flexible circuit are of an integrated structure, as no additional connecting structure exists between the flexible sub-control board and the flexible circuit, when the control board is bent, failure modes such as breakage and the like of the control board at the connecting structure can be avoided.
Optionally, the connection circuit includes a plurality of sub-connection circuits arranged at intervals in a direction parallel to the second side edge, and two adjacent edges of two adjacent sub-connection circuits are adjacent edges;
the second side edge and the connection point of the adjacent edge are flattened to form a third length, the first side edge and the connection point of the adjacent edge are flattened to form a fourth length, and the third length is greater than or equal to the fourth length.
The third length is greater than the fourth length, that is, the second side edge is provided with a length redundancy, and the length redundancy is positioned between two adjacent sub-connection circuits. When the control board is bent, the redundant length between two adjacent sub-connection circuits can compensate for the tensile deformation of the control board when the control board is bent, thereby preventing the sub-connection circuits from being distorted.
Optionally, one side of the display panel, which is away from the light emitting surface, is a curved surface, and when the control panel is in a bending state, the control panel is attached to the curved surface. The control panel is bent according to the curved surface of the side, away from the light-emitting surface, of the display panel, so that the space occupied by the control panel in the direction perpendicular to the light-emitting surface is reduced.
Optionally, the display panel is a curved display panel that is recessed in a direction away from the light exit surface, and the first side is a curved side of the curved display panel. When the first side edge is the bent edge of the curved-surface display panel, the first end of the connecting circuit connected with the first side edge is bent, the control panel is attached to the curved surface of the display panel, which is deviated from the light emergent surface, namely, the second end of the connecting circuit connected with the control panel is also bent. Because the display panel is sunken along the direction departing from the light-emitting surface, the curvature of the first end of the connecting circuit is larger, the curvature radius is smaller, and the curvature of the second end of the connecting circuit is smaller, and the curvature radius is larger. When the curvatures of the two ends of the connecting circuit are different, the connecting circuit is easy to distort, so that the flattening length between the second side edge and the connecting points on the two opposite sides of the connecting circuit is greater than the flattening length between the first side edge and the connecting points on the two opposite sides of the connecting circuit, and the curvature difference of the two ends of the connecting circuit is made up.
Optionally, the display panel is a liquid crystal display panel, the liquid crystal display panel includes a first substrate, a liquid crystal layer, and a second substrate that are stacked in sequence, the first substrate is located on a side of the second substrate that is away from the light exit surface, and a thickness of the first substrate is smaller than a thickness of the second substrate.
When the display panel is curved, a compressive stress is generated inside the second substrate close to the light-emitting surface, and a tensile stress is generated inside the first substrate far from the light-emitting surface. The glass material has a strong bearing capacity to compressive stress and a weak bearing capacity to tensile stress. Thus, the first substrate, which is under internal tensile stress, is easily broken. The thickness of the first substrate is reduced, and the tensile stress born by the first substrate during bending is reduced, so that the first substrate is not easy to crack.
Optionally, the sub-connection circuit comprises a flip-chip. The chip on film comprises the driving chip, so that the size of the binding area can be reduced, and the screen occupation ratio of the display device is improved.
On the other hand, the application provides a display device, include the display module assembly.
The display module assembly and display device that this application embodiment provided, display panel include first side, and the control panel includes the second side, and connecting circuit's first end is connected at first side, and connecting circuit's second end is connected at the second side. The flattening length between the connection points on the two opposite sides of the connection circuit on the second side is a first length, and the flattening length between the connection points on the two opposite sides of the connection circuit on the first side is a second length. Because first length is greater than the second length, is provided with redundant length on the control panel is at the second side when flat state promptly, when the control panel was crooked, the redundant length that sets up on the control panel can compensate the tensile volume when the control panel is crooked to take place tensile deformation when preventing the control panel from crooked, consequently connecting circuit also can not take place distortion, has solved the demonstration abnormal problem when the control panel is crooked.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a display module according to the related art;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;
FIG. 4 is a partial enlarged view of FIG. 3;
FIG. 5 is a partial enlarged view of FIG. 4;
FIG. 6 is a first schematic structural diagram of a first substrate and a second substrate in the related art;
FIG. 7 is a second schematic structural diagram of a first substrate and a second substrate in the related art;
fig. 8 is a first schematic structural diagram of a first substrate and a second substrate in a display panel provided in an embodiment of the present application;
fig. 9 is a second schematic structural diagram of a first substrate and a second substrate in a display panel provided in the embodiment of the present application.
Reference numerals are as follows:
100-a display panel; 110-a display area; 120-a binding region; 130-a second substrate; 140-a first substrate;
200-sub-connection circuit; 210-a driver chip;
300-a control panel; 310-a flexible circuit; 320-sub control panel.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the embodiments of the present application, the terms "first", "second", "third", "fourth", and the like are used for distinguishing the same or similar items with substantially the same functions and actions, and are used only for clearly describing technical solutions of the embodiments of the present application, and are not understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.
In the embodiments of the present application, "a plurality" means two or more, and "at least one" means one or more unless specifically limited otherwise.
In the embodiments of the present application, the terms "upper", "lower", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The embodiment of the present application provides a display device, which may be a display, a television, a mobile phone, a notebook computer, a super mobile personal computer (UMPC), a netbook, a Personal Digital Assistant (PDA), a wearable device, a virtual reality device, or a mobile computing device, and other devices having a display module, and the embodiment of the present application is not limited thereto. For convenience of description, the display device is exemplified as a display, and particularly, a large-sized display is exemplified in the present application.
The display device comprises a display module. As shown in fig. 3 to 9, the display module includes a display panel 100, a control board 300 and a connection circuit. In operation, the control board 300 transmits signals to the display panel 100 through the connection circuit to control the display panel 100 to display images.
In practical application, the display device may further include a housing, a power module, a processing module, a storage module, and the like as needed, which is not limited in the present application.
The Display panel 100 may be a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED) or a Micro LED Display (Micro LED), and the like, and the embodiment of the present application does not limit the type of the Display panel 100. The display panel 100 includes a plurality of pixels arranged in an array, each of which displays a corresponding color, such that the plurality of pixels collectively form an image.
The display panel 100 may include a display area 110 and a binding area 120 located outside the display area 110, the display area 110 being for displaying an image, the binding area 120 being for electrically connecting with the connection circuit. Binding terminals may be disposed in the binding region 120, and the binding terminals are electrically connected to a driving circuit of a pixel in the display panel.
The connection circuit functions to electrically connect the control board 300 with the display panel 100. The structural form of the connecting circuit can be determined according to the packaging form of the display module.
For example, when the display module is a COF (Chip On Flex) package, the connection circuit may be a flip-Chip film. COF packaging is a crystal grain flexible film packaging technology for fixing an integrated circuit on a flexible circuit board, a chip is combined with a flexible substrate circuit by using a flexible additional circuit board as a packaging chip carrier, or the flexible additional circuit board without the packaged chip is singly indicated, and the COF packaging comprises tape-type packaging production, flexible board connection chip components and flexible IC carrier board packaging.
For example, when the display module is a COG (chip on Glass) package, the connection circuit may be a flexible circuit. The COG packaging is to directly bond the driver chip 210 on the glass substrate through a bonding process.
In practical applications, the control board 300 may be disposed at a position not in the same plane as the display panel 100 (for example, the control board 300 is located at the back of the display panel 100), so the connection circuit is usually a bendable connection circuit, so that the control board 300 and the display panel 100 can be electrically connected when not in the same plane.
The form of the connection circuit is not limited in the present application as long as the electrical connection between the display panel 100 and the control board 300 can be achieved.
The display panel 100 includes a first side, the control board 300 includes a second side, a first end of the connection circuit is connected to the first side, and a second end of the connection circuit is connected to the second side.
The first side is one of the sides of the periphery of the display panel 100, and the second side is one of the sides of the periphery of the control panel 300.
Exemplarily, the display panel 100 is a rectangular display panel 100, when in use, a light emitting surface of the display panel 100 is perpendicular to the ground, and a side located at a lower end of the display panel 100 is a first side. The control board 300 is a rectangular control board 300, a long side of the control board 300 is parallel to a first side, and one side of the control board 300 opposite to the first side is a second side.
Of course, the edge on the left and right sides or the upper side of the display panel 100 may be the first side.
The connection circuit may be connected to the display panel 100 and the control board 300 through a bonding process.
Illustratively, the first side of the display panel 100 includes a bonding region 120, a plurality of first bonding terminals are disposed on the bonding region 120, a plurality of second bonding terminals are disposed on the first end of the connection circuit, and the first bonding terminals and the second bonding terminals are electrically connected through a bonding process. Similarly, the second end of the connection circuit is provided with a plurality of third binding terminals, the second side of the control board 300 is provided with a plurality of fourth binding terminals, and the third binding terminals and the fourth binding terminals can be electrically connected through a binding process.
Wherein, a plurality of first terminals of binding can set up along the direction interval of first side, and a plurality of fourth terminals of binding can set up along the direction interval of second side.
Fig. 1 is a schematic structural view of a display module according to the related art, and fig. 2 is a partial enlarged view of fig. 1. As shown in fig. 1 and 2, the display module according to the related art includes a display panel 100, a control board 300, and a plurality of sub-connection circuits 200 electrically connecting the display panel 100 and the control board 300. The plurality of sub-pixel intercepting circuits 200 are spaced apart in a direction parallel to the lower edge of the display panel 100. The control Board 300 of fig. 1 includes two Printed Circuit Boards (PCBs) spaced along a lower edge of the display panel 100, and each PCB is electrically connected to the display panel 100 through a plurality of sub-connection circuits 200. In the schemes of fig. 1 and 2, the sub-connection circuit is COF.
In the scheme shown in fig. 1 and 2, when the PCB is bent in a direction parallel to the lower edge of the display panel 100, since the PCB has a high hardness, the bent portion of the PCB is deformed by tension, which easily causes distortion of the COF electrically connected to the PCB, and breaks the internal circuit structure of the COF, thereby causing display abnormality of the display panel 100.
In view of this, in the embodiment of the present application, the control board 300 can be bent in a direction parallel to the second side, a length redundancy is preset on the second side when the control board 300 is not bent according to the amount of stretch when the control board 300 is bent, and the amount of stretch when the control board 300 is bent is compensated by the length redundancy, thereby preventing the distortion of the connection circuit caused when the control board 300 is stretched. Wherein, the length refers to the dimension along the direction parallel to the second side edge.
Specifically, the flattened length between the connection points on the opposite sides of the connection circuit and the second side is a first length, the flattened length between the connection points on the opposite sides of the connection circuit and the first side is a second length, and the first length is greater than the second length.
Connecting opposite sides of the circuit refers to opposite sides in a direction parallel to the second side. When the connecting circuit is a circuit with an integrated structure, the leftmost side of the connecting circuit and the rightmost side of the connecting circuit are two opposite sides of the connecting circuit. Fig. 3 is a schematic structural diagram of a display module according to an embodiment of the present disclosure, and as shown in fig. 3, when the connection circuit includes a plurality of sub-connection circuits 200 arranged at intervals in a direction parallel to the second side, a left side of the leftmost sub-connection circuit 200 and a right side of the rightmost sub-connection circuit 200 are opposite sides of the connection circuit.
The first length is a flattened length of a portion of the second side edge between opposite sides of the connecting circuit. The second length is a flattened length of a portion of the first side edge between opposite sides of the connecting circuit.
The difference between the first length and the second length is the length redundancy disposed on the second side, and the length redundancy can be determined according to the stretching amount of the control board 300 during bending deformation. Illustratively, the difference between the first length and the second length is equal to the amount of stretch when the control plate 300 is bent. Of course, the difference between the first length and the second length may be slightly larger or smaller than the stretching amount of the control board 300 during bending deformation, as long as the connecting circuit does not twist after the control board 300 is bent.
The application provides a display module assembly, display panel 100 include first side, and control panel 300 includes the second side, and connecting circuit's first end is connected at first side, and connecting circuit's second end is connected at the second side. The flattening length between the connection points on the two opposite sides of the connection circuit on the second side is a first length, and the flattening length between the connection points on the two opposite sides of the connection circuit on the first side is a second length. Because the first length is greater than the second length, that is, the control board 300 is provided with the length redundancy on the second side edge in the flat state, when the control board 300 is bent, the length redundancy arranged on the control board 300 can make up the stretching amount when the control board 300 is bent, so that the stretching deformation when the control board 300 is bent is prevented, the connecting circuit can not be distorted, and the abnormal display problem when the control board 300 is bent is solved.
Alternatively, in some embodiments, in order to reduce the possibility of the control board 300 being deformed by stretching, the control board 300 may include a plurality of sub-control boards 320 spaced apart from each other in a direction parallel to the second side edge, and two adjacent sub-control boards 320 are connected to each other by the flexible circuit 310.
The two adjacent sub-control boards 320 are connected through the flexible circuit 310, and when the control board 300 is bent, the flexible circuit 310 can be bent to form a certain included angle between the two adjacent sub-control boards 320, so that the purpose of bending the control board 300 is achieved. That is, the flexible circuit 310 bends the control board 300, thereby reducing the amount of bending of each sub-control board 320, and further reducing the amount of tension when each sub-control board 320 is bent, and making the connection circuit less likely to be distorted.
The sub-control board 320 may be a PCB or a flexible circuit 310 board, and the structural form of the sub-control board 320 is not limited in the present application.
It should be noted that when the connection circuit includes a plurality of sub-connection circuits 200 spaced apart in a direction parallel to the second side, the flexible circuit 310 may be located between two adjacent sub-connection circuits.
Illustratively, a flexible circuit 310 is disposed between each two adjacent sub-connection circuits 200.
Of course, the flexible circuit 310 may be provided only between some of the adjacent sub-connection circuits, and the flexible circuit 310 may not be provided between the other sub-connection circuits. The actual application process can be determined according to the bending performance and the bending curvature of the sub-control board 320.
The Flexible Circuit 310 may be a Flexible Printed Circuit (FPC), a Flexible Flat Cable (FFC), or the like, as long as the Flexible Flat Cable can be bent in a direction parallel to the second side edge and the adjacent sub-control boards 320 can be electrically connected.
When the connection circuit includes a plurality of sub-connection circuits 200, the length of the flexible circuit 310 in parallel to the second side may be determined according to the spacing between adjacent two sub-connection circuits 200.
Illustratively, as shown in fig. 3 and 4, the connection circuit includes a plurality of sub-connection circuits 200 arranged at intervals in a direction parallel to the second side, the sub-control board 320 is electrically connected to the display panel 100 through the sub-connection circuits 200, and the flexible circuit 310 is not connected to the sub-connection circuits 200.
Since the flexible circuit 310 is bent by a large amount when the control board 300 is bent, the sub-connection circuit 200 is not connected to the flexible circuit 310, and the sub-connection circuit 200 can be prevented from being distorted.
For a specific application, the flexible circuit 310 may be electrically connected to the sub-control board 320 through a connector.
Optionally, in some embodiments, the sub-control board 320 comprises a flexible sub-control board. The Flexible sub-control board may be a Flexible Printed Circuit (FPC for short), a Flexible Flat Cable (FFC for short), or the like, as long as it is bendable in a direction parallel to the second side edge. The flexible sub-control board is flexible and easy to bend, so that the flexible sub-control board is not easy to stretch and deform during bending, and the distortion and deformation of a connecting circuit caused by the stretching and deformation during bending are reduced.
Of course, the sub-control board 320 may be a sub-control board having a high hardness. For example, the sub-control board 320 may be a PCB, a plurality of PCBs are spaced apart from each other in a direction parallel to the second side, and two adjacent PCBs are connected to each other by the flexible circuit 310.
The flexible sub-control board may be the same as or different from the flexible circuit 310. For example, the flexible sub-control board may be an FPC, and the flexible circuit 310 is also an FPC. Alternatively, the flexible sub-control board is FPC, and the flexible circuit 310 is FFC.
Optionally, in some embodiments, the flexible sub-control board 320 is a unitary structure with the flexible circuit 310.
After the flexible sub-control board and the flexible circuit 310 are of an integrated structure, the flexible sub-control board and the flexible circuit 310 do not need to be connected through a connector, so that the structure of the control board 300 is simpler, and the assembly difficulty is reduced. Moreover, after the flexible sub-control board and the flexible circuit 310 are integrated, since there is no additional connection structure between the flexible sub-control board and the flexible circuit 310, when the control board 300 is bent, failure modes such as fracture and the like of the connection structure of the control board 300 cannot occur.
Illustratively, all the sub-control boards 320 in the control board 300 are flexible sub-control boards, and all the flexible sub-control boards and all the flexible circuits 310 are of an integrated structure, i.e., the control board 300 is an FPC or FFC or the like of an integrated structure, so that the structure of the control board 300 is simpler and easier to bend. For example, the control board 300 is a long strip FPC or a long strip FFC extending in a direction parallel to the second side edge.
Of course, the control board 300 may also be a flexible sub-control board only part of the sub-control board 320, and part of the sub-control board 320 and the flexible circuit are an integral structure. For example, the flexible sub-control board and the flexible circuit 310 integrated structure is employed only at a position where the curvature is large when the control board 300 is bent.
Alternatively, in some embodiments, the connection circuit includes a plurality of sub-connection circuits 200 arranged at intervals in a direction parallel to the second side, and two adjacent sides of two adjacent sub-connection circuits 200 are adjacent sides. The flattening length between the second side edge and the connecting point of the adjacent edge is a third length, the flattening length between the first side edge and the connecting point of the adjacent edge is a fourth length, and the third length is greater than or equal to the fourth length.
In practical applications, the connection circuit may include a driving chip 210 for driving the display panel 100. Due to the limited access capability of a single driver chip 210, the display panel 100 generally needs to have multiple driver chips 210 simultaneously, especially when the display panel 100 is large in size or has a large number of pixels. Therefore, it is necessary to provide the connection circuit to include a plurality of sub-connection circuits 200, one driving chip 210 being provided for each sub-connection circuit 200.
The third length is greater than the fourth length, that is, the length redundancy is provided on the second side edge, and the length redundancy is located between two adjacent sub-connection circuits 200. When the control board 300 is bent, the redundant length between adjacent two sub-link circuits 200 can compensate for the amount of tensile deformation when the control board 300 is bent, thereby preventing the sub-link circuits 200 from being distorted.
Illustratively, when the control board 300 is in the non-bent state, since the portion of the control board 300 between two adjacent sub-connection circuits 200 is provided with a length redundancy, the portion of the control board 300 between two adjacent sub-connection circuits 200 is provided with an arch-shaped protrusion. When the control plate 300 is bent, the arched protrusion is flattened to be curved.
Optionally, in some embodiments, the sub-connection circuit 200 may include a flip-chip. The flip chip includes the driving chip 210, which can reduce the size of the bonding area 120, thereby increasing the screen occupation ratio of the display device.
In practical applications, in order to increase the screen ratio of the display device, it is necessary to reduce the space occupied by other components in the peripheral area of the display panel 100 as much as possible. Therefore, when the display module is assembled, the connection circuit needs to be bent to make the control board 300 be located on the side of the display panel 100 away from the light-emitting surface, and fix the control board 300 on the side of the display panel 100 away from the light-emitting surface.
After the control board 300 is fixed on the side of the display panel 100 departing from the light-emitting surface, in order to reduce the thickness of the display device along the direction perpendicular to the light-emitting surface and make the display device thinner and lighter, the control board 300 needs to be tightly attached to the side of the display panel 100 departing from the light-emitting surface, so as to reduce the space occupied by the control board 300 in the direction perpendicular to the light-emitting surface.
Optionally, in some embodiments, a surface of the display panel 100 facing away from the light emitting surface is a curved surface, and when the control board 300 is in a bent state, the control board 300 is attached to the curved surface. That is, the control board 300 is bent according to the curved surface of the side of the display panel 100 departing from the light emitting surface, so as to reduce the space occupied by the control board 300 along the direction perpendicular to the light emitting surface.
Illustratively, the display panel 100 is an LCD display panel 100, one side of the display panel 100 facing away from the light emitting surface is a backlight plate, the backlight plate is curved, and the control board 300 is fixed on the backlight plate.
The curved surface on the side of the display panel 100 departing from the light-emitting surface may be the curved surface of the display panel 100 as a whole, or the flat surface on the light-emitting surface of the display panel 100, and the curved surface on the side of the display panel 100 departing from the light-emitting surface.
Optionally, in some embodiments, the display panel 100 is a curved display panel 100 that is concave in a direction away from the light exit surface, and the first side is a curved side of the curved display panel 100.
In a large-sized display, the size of the display panel 100 is much larger than that of human eyes. In order to reduce the image distortion when the user views the edge region of the display panel 100, the display panel 100 is a curved display panel 100 that is concave in a direction away from the light emitting surface.
Exemplarily, the light emitting surface of the display panel 100 is perpendicular to the ground, the size of the display panel 100 along the horizontal direction is much larger than that of human eyes, the intersection line of the display panel 100 and the horizontal plane is a curve, and the curve is convex in the direction away from the light emitting surface.
Of course, it may be: the light-emitting surface of the display panel 100 is perpendicular to the ground, the size of the display panel 100 in the vertical direction is far larger than that of human eyes, the intersection line of the display panel 100 and the vertical surface is a curve, and the curve protrudes in the direction away from the light-emitting surface.
The method can also comprise the following steps: the light emitting surface of the display panel 100 is perpendicular to the ground, the sizes of the display panel 100 in the horizontal direction and the vertical direction are far larger than those of human eyes, the intersecting lines of the display panel 100 and the horizontal plane and the vertical plane are curves, and the curves are convex in the direction away from the light emitting surface.
When the first side is the curved side of the curved display panel 100, the first end of the connection circuit connected to the first side is curved, and the control board 300 is attached to the curved surface of the display panel 100 on the side away from the light emitting surface, that is, the second end of the connection circuit connected to the control board 300 is also curved. Since the display panel 100 is recessed along the direction away from the light emitting surface, the curvature of the first end of the connection circuit is larger and the curvature radius is smaller, and the curvature of the second end of the connection circuit is smaller and the curvature radius is larger. When the curvatures of the two ends of the connecting circuit are different, the connecting circuit is easy to distort, so that the flattening length between the second side edge and the connecting points on the two opposite sides of the connecting circuit is greater than the flattening length between the first side edge and the connecting points on the two opposite sides of the connecting circuit, and the curvature difference of the two ends of the connecting circuit is made up.
Optionally, in some embodiments, the display panel 100 is a liquid crystal display panel 100, the liquid crystal display panel 100 includes a first substrate 140, a liquid crystal layer, and a second substrate 130 sequentially stacked, the first substrate 140 is located on a side of the second substrate 130 away from the light exit surface, and a thickness of the first substrate 140 is smaller than a thickness of the second substrate 130.
Fig. 6 is a first schematic view illustrating a structure of the first substrate 140 and the second substrate 130 in the related art, and fig. 7 is a second schematic view illustrating a structure of the first substrate 140 and the second substrate 130 in the related art, as shown in fig. 6 and 7, a thickness of the first substrate 140 in the related art is greater than a thickness of the second substrate 130. When the display panel 100 is curved, a compressive stress is generated inside the second substrate 130 close to the light-emitting surface, and a tensile stress is generated inside the first substrate 140 far from the light-emitting surface. The glass material has strong bearing capacity to compressive stress and weak bearing capacity to tensile stress. Thus, the first substrate 140, which is under internal tensile stress, is easily broken.
In view of this, as shown in fig. 8 and 9, the thickness of the first substrate 140 is made smaller than that of the second substrate 130. The thinner the thickness of the first substrate 140, the less tensile stress the inside is subjected to when bent, and the less likely it is to be broken.
Exemplarily, the first substrate 140 is a TFT (Thin Film Transistor) glass substrate, the second substrate 130 is a CF (color Filter) glass substrate, a liquid crystal layer is disposed between the first substrate 140 and the second substrate 130, and the light-emitting surface of the display panel 100 is located on a side of the second substrate 130 departing from the first substrate 140.
Of course, the first substrate 140 may also be a CF glass substrate, and the second substrate 130 may be a TFT glass substrate, where the light-emitting surface of the display panel 100 is located on a side of the TFT glass substrate away from the CF glass substrate.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A display module is characterized by comprising a display panel, a control panel and a connecting circuit;
the display panel comprises a first side edge, the control panel comprises a second side edge, the first end of the connecting circuit is connected to the first side edge, and the second end of the connecting circuit is connected to the second side edge;
the control panel is configured to be bendable in a direction parallel to the second side;
the flattening length between the second side edge and the connection points on two opposite sides of the connection circuit is a first length; the flattening length between the first side edge and the connection points on two opposite sides of the connection circuit is a second length; the first length is greater than the second length;
the opposite sides of the connection circuit are opposite sides in a direction parallel to the second side.
2. The display module according to claim 1, wherein the control board comprises a plurality of sub-control boards arranged at intervals in a direction parallel to the second side edge, and two adjacent sub-control boards are connected by a flexible circuit.
3. The display module of claim 2, wherein the sub-control panel comprises a flexible sub-control panel.
4. The display module of claim 3, wherein the flexible sub-control board is a unitary structure with the flexible circuit.
5. The display module according to claim 1, wherein the connection circuit comprises a plurality of sub-connection circuits arranged at intervals in a direction parallel to the second side edge, and two adjacent edges of two adjacent sub-connection circuits are adjacent edges;
the second side edge and the connection point of the adjacent edge are flattened to form a third length, the first side edge and the connection point of the adjacent edge are flattened to form a fourth length, and the third length is greater than or equal to the fourth length.
6. The display module according to any one of claims 1 to 5, wherein a surface of the display panel facing away from the light exit surface is a curved surface, and the control board is attached to the curved surface when the control board is in a bent state.
7. The display module according to claim 6, wherein the display panel is a curved display panel that is concave in a direction away from the light exit surface, and the first side is a curved side of the curved display panel.
8. The display module according to claim 7, wherein the display panel is a liquid crystal display panel, the liquid crystal display panel includes a first substrate, a liquid crystal layer, and a second substrate stacked in sequence, the first substrate is located on a side of the second substrate facing away from the light exit surface, and a thickness of the first substrate is smaller than a thickness of the second substrate.
9. The display module of claim 5, wherein the sub-connection circuit comprises a flip-chip.
10. A display device comprising a display module according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210913391.0A CN115273666A (en) | 2022-07-29 | 2022-07-29 | Display module and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210913391.0A CN115273666A (en) | 2022-07-29 | 2022-07-29 | Display module and display device |
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| CN115273666A true CN115273666A (en) | 2022-11-01 |
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| CN202210913391.0A Pending CN115273666A (en) | 2022-07-29 | 2022-07-29 | Display module and display device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278175A (en) * | 2015-11-12 | 2016-01-27 | 深圳市华星光电技术有限公司 | Curved-surface liquid crystal display panel and liquid crystal display panel |
| CN108242461A (en) * | 2016-12-26 | 2018-07-03 | 三星显示有限公司 | Show equipment |
| CN110767089A (en) * | 2019-10-29 | 2020-02-07 | 深圳市华星光电技术有限公司 | Structure and method for solving poor bending of curved surface display device |
| CN210142246U (en) * | 2019-06-25 | 2020-03-13 | 惠科股份有限公司 | Drive circuit and display device |
| CN113112942A (en) * | 2020-01-13 | 2021-07-13 | 三星显示有限公司 | Display device |
| CN113129754A (en) * | 2021-04-19 | 2021-07-16 | 京东方科技集团股份有限公司 | Display module and display device |
| JP2021179462A (en) * | 2020-05-11 | 2021-11-18 | 三菱電機株式会社 | Electronic apparatus and method for manufacturing the same |
| CN114675446A (en) * | 2022-03-03 | 2022-06-28 | 绵阳惠科光电科技有限公司 | Curved surface display panel and display device |
-
2022
- 2022-07-29 CN CN202210913391.0A patent/CN115273666A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278175A (en) * | 2015-11-12 | 2016-01-27 | 深圳市华星光电技术有限公司 | Curved-surface liquid crystal display panel and liquid crystal display panel |
| CN108242461A (en) * | 2016-12-26 | 2018-07-03 | 三星显示有限公司 | Show equipment |
| CN210142246U (en) * | 2019-06-25 | 2020-03-13 | 惠科股份有限公司 | Drive circuit and display device |
| CN110767089A (en) * | 2019-10-29 | 2020-02-07 | 深圳市华星光电技术有限公司 | Structure and method for solving poor bending of curved surface display device |
| CN113112942A (en) * | 2020-01-13 | 2021-07-13 | 三星显示有限公司 | Display device |
| JP2021179462A (en) * | 2020-05-11 | 2021-11-18 | 三菱電機株式会社 | Electronic apparatus and method for manufacturing the same |
| CN113129754A (en) * | 2021-04-19 | 2021-07-16 | 京东方科技集团股份有限公司 | Display module and display device |
| CN114675446A (en) * | 2022-03-03 | 2022-06-28 | 绵阳惠科光电科技有限公司 | Curved surface display panel and display device |
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