WO2021254081A1 - 显示面板、显示装置及终端设备 - Google Patents
显示面板、显示装置及终端设备 Download PDFInfo
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- WO2021254081A1 WO2021254081A1 PCT/CN2021/094718 CN2021094718W WO2021254081A1 WO 2021254081 A1 WO2021254081 A1 WO 2021254081A1 CN 2021094718 W CN2021094718 W CN 2021094718W WO 2021254081 A1 WO2021254081 A1 WO 2021254081A1
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- section
- display panel
- backlight
- test section
- backlight surface
- Prior art date
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- 238000012360 testing method Methods 0.000 claims abstract description 123
- 239000000758 substrate Substances 0.000 claims abstract description 52
- 230000007704 transition Effects 0.000 claims abstract description 13
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000007423 decrease Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000004642 Polyimide Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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Classifications
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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
-
- 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
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of a flexible or folded printed circuit
-
- 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
- H05K1/0277—Bendability or stretchability details
- H05K1/028—Bending or folding regions of flexible printed circuits
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
-
- 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
- H05K1/0266—Marks, test patterns or identification means
- H05K1/0268—Marks, test patterns or identification means for electrical inspection or testing
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/05—Flexible printed circuits [FPCs]
- H05K2201/055—Folded back on itself
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09009—Substrate related
- H05K2201/09036—Recesses or grooves in insulating substrate
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09009—Substrate related
- H05K2201/09063—Holes or slots in insulating substrate not used for electrical connections
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10128—Display
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10151—Sensor
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10189—Non-printed connector
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K59/65—OLEDs integrated with inorganic image sensors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
Definitions
- the present disclosure relates to the field of display technology, and in particular, to a display panel, a display device, and a terminal device.
- the display panel is an indispensable part.
- the circuit board of the display panel In the production process of the terminal equipment, in order to check whether the display panel is qualified, it is necessary to apply a test signal through the circuit board of the display panel to perform a lighting test During the testing process, the circuit board needs to be connected to the test equipment.
- the existing test methods can easily damage the circuit board and cause the display panel to fail to work normally.
- the purpose of the present disclosure is to provide a display panel, a display device and a terminal device.
- a display panel including a display substrate and a main flexible circuit board, the display substrate has a backlight surface; the main flexible circuit board includes:
- the connecting section is arranged on the backlight surface, and the outer peripheral surface of the connecting section includes a first side surface and a second side surface opposite to each other;
- test section is connected to the first side surface, and the other end has a connection port; the side surface of the test section close to the fixed section is transitionally connected to the first side surface through a crack stop groove, which is perpendicular to The main flexible circuit board penetrates in the direction of the backlight surface; in the extension direction of the orthographic projection of the first side surface on the backlight surface, the depth of the crack arrest groove is not greater than the width of the test section 10%;
- the test section is a flexible structure that can be converted between the first form and the second form;
- test section is attached to the backlight surface, and the connection port is located within the edge of the display substrate;
- test section In the second form, at least a part of the test section is separated from the backlight surface, and is bent toward the second side surface away from the first side surface, and the connection port extends out of the Display outside the edge of the substrate.
- the orthographic projection of the crack arrest groove on the backlight surface is arc-shaped.
- the crack arrest groove and the side surface of the test section close to the fixed section are smoothly transitioned and connected by an arc-shaped transition surface; the crack arrest groove and the first Smooth transition connection on the side.
- the orthographic projection of the crack arrest groove on the backlight surface and the orthographic projection of the transition surface on the backlight surface have the same radius.
- the radii of the orthographic projection of the crack arrest groove on the backlight surface and the orthographic projection of the transition surface on the backlight surface are 0.3mm-0.7mm.
- the orthographic projection of the crack arresting groove on the backlight surface is U-shaped, and the crack arresting groove has two opposite side walls, and one of the side walls is The side surfaces of the test section close to the fixed section are coplanar, and the other side wall intersects the first side surface.
- the number of the crack arrest grooves is multiple, and they are sequentially connected between the first side surface and the side surface of the test section close to the fixed section, two adjacent to each other.
- the two crack arrest grooves are smoothly transitioned and connected.
- the crack arrest groove has two opposite side walls, and the distance between the two side walls gradually decreases toward the second side surface.
- the connecting section is a flexible structure, and when the test section is in the first form, the connecting section is in separable contact with the backlight surface.
- the display substrate has a light-transmitting area, and the light-transmitting area is located between the fixed section and the test section in the first form;
- the display panel also includes:
- the fingerprint sensing unit is arranged on the backlight surface and located between the fixed section and the test section in the first form, and the light-transmitting area is located in the projection of the fingerprint sensing unit on the backlight surface Inside.
- a side surface of the fixed section close to the test section is provided with a avoidance hole, the avoidance hole penetrates the fixed section in a direction perpendicular to the backlight surface, and the transparent A part of the contour of the light zone is located in the escape hole and matches the shape of the escape hole.
- the surface of the fixed section close to the test section and the first side surface are smoothly transitionally connected by a connecting groove, and the connecting groove penetrates in a direction perpendicular to the backlight surface
- the main flexible circuit board is smoothly transitionally connected by a connecting groove, and the connecting groove penetrates in a direction perpendicular to the backlight surface
- the display panel further includes:
- the touch layer is arranged on the side of the display substrate away from the backlight surface or integrated in the display substrate;
- the flexible touch circuit board is connected with the touch layer, bent to the backlight surface, and connected with the fixed section.
- a display device including the display panel described in any one of the above.
- a terminal device including the display device described in any one of the above.
- FIG. 1 is a partial top view of a test section in a first form in an embodiment of a display panel of the present disclosure.
- FIG. 2 is a partial top view of a test section in a second form in an embodiment of the display panel of the present disclosure.
- FIG. 3 is a side view of a test section in a second form in an embodiment of the display panel of the present disclosure.
- FIG. 4 is a schematic diagram of the main flexible circuit board in the first form in the first embodiment of the display panel of the present disclosure.
- FIG. 5 is a partial schematic diagram of the main flexible circuit board in FIG. 4.
- FIG. 6 is a schematic diagram of the main flexible circuit board in the first form in the second embodiment of the display panel of the present disclosure.
- FIG. 7 is a schematic diagram of the main flexible circuit board in the first form in the third embodiment of the display panel of the present disclosure.
- FIG. 8 is a schematic diagram of the main flexible circuit board in the first form in the fourth embodiment of the display panel of the present disclosure.
- FIG. 9 is a schematic diagram of the main flexible circuit board in the first form in the fifth embodiment of the display panel of the present disclosure.
- FIG. 10 is a schematic diagram of the main flexible circuit board and the light-transmitting area in the first form in an embodiment of the display panel of the present disclosure.
- FIG. 11 is a schematic diagram of a chip-on-film flexible circuit board and a flexible touch circuit board in an embodiment of the display panel of the present disclosure.
- 001. Test equipment 1. Display substrate; 11. Backlight surface; 12. Light emitting surface; 101. Drive backplane; 102. Light emitting device layer; 2. Main flexible circuit board; 21. Connecting section; 211. First side surface; 212. Second side surface; 22. Fixed section; 221. Avoidance hole; 23. Test section; 231. Connection port; 3. Fingerprint sensor unit; 4. Touch layer; 5. Flexible touch circuit board; 6. Flip chip Thin film flexible circuit board; 100, crack arrest groove; 200, transition surface; 300, light transmission area; 400, connection groove; 500, avoid gap.
- the display panel has a Main Flexible Printed Circuit (MFPC), which is used to transmit driving signals and power signals from the main board of the terminal device to the display panel to display images.
- MFPC Main Flexible Printed Circuit
- the display panels need to be tested by test equipment to test the display panels. For example, when a lighting test is performed by a lighting test device, the lighting test device can input a test signal to the display panel to make it present a specific pattern, so as to determine whether the display panel can be displayed normally.
- the test equipment needs to be connected to the main flexible circuit board of the display panel to input the test signal.
- it is usually necessary to bend the main flexible circuit board so that the connection port extends out of the display panel to connect to the test device .
- it is easy to cause the main flexible circuit board to tear, and when the pressure is too high, it is easy to cause a "dead folding" phenomenon that exceeds the elastic limit and cannot be restored, which affects the normal display of the display panel, and even leads to the display.
- the panel is scrapped. If the main flexible circuit board is not bent, it needs to be connected to the test equipment through the adapter device, which increases the cost, and problems such as tearing may still occur during the process of connecting and separating the adapter device.
- the display panel includes a display substrate 1 and a main flexible circuit board 2.
- the display substrate 1 has a backlight surface 11;
- the main flexible circuit board 2 includes a connecting section 21.
- the connecting section 21 is provided on the backlight surface 11, and the outer peripheral surface of the connecting section 21 includes a first side surface 211 and a second side surface 212 opposite to each other.
- the fixing section 22 is attached to and fixed to the backlight surface 11, one end of the fixing section 22 is connected to the first side surface 211, and the other end extends to the side of the first side surface 211 away from the second side surface 212.
- test section 23 is connected to the first side surface 211, and the other end has a connection port 231; the side surface of the test section 23 close to the fixed section 22 and the first side surface 211 are transitionally connected through the crack arrest groove 100, which is perpendicular to the backlight surface 11 penetrates through the main flexible circuit board 2; in the extension direction of the orthographic projection of the first side surface 211 on the backlight surface 11, the depth of the crack arrest groove 100 is not more than 10% of the width of the test section; the test section 23 is capable of A flexible structure that transforms between the first form and the second form.
- test section 23 is attached to the backlight surface 11, and the connection port 231 is located within the edge of the display substrate 1;
- test section 23 is separated from the backlight surface 11 and bent toward the side of the second side surface 212 away from the first side surface 211, and the connection port 231 extends out of the edge of the display substrate 1.
- the display panel of the embodiment of the present disclosure can make the test section 23 in the first form after the test is not performed or after the test is completed. At this time, the test section 23 is attached to the backlight surface 11, and the port 231 is connected. It is located within the edge of the display substrate 1 to prevent the connection port 231 from protruding from the edge of the display substrate 1 and interfere with other structures, so that the display panel can be installed normally.
- connection port 231 extends out of the edge of the display substrate 1. In addition, it can be connected to the test equipment 001 for testing.
- the crack arrest groove 100 Since the side surface of the test section 23 close to the fixed section 22 and the first side surface 211 are transitionally connected by the crack arrest groove 100, the corners of the test section 23 and the connecting section 21 are prevented from tearing due to the bending of the test section 23. At the same time, the crack arrest groove 100 is beneficial to enable the test section 23 to bend within a larger range, and prevent the test section 23 from being unable to recover from the second form to the first form "dead folding" phenomenon.
- the depth of the crack arrest groove 100 is not greater than 10% of the width of the test section, which can prevent the crack arrest groove 100 from being too wide to affect the test section 23 Wires are routed, and the corners where the test section 23 and the connection section 21 are connected are too narrow and the local strength is too low.
- the display substrate 1 may have a backlight surface 11 and a light-emitting surface 12 opposite to each other, and can emit light through the light-emitting surface 12 to display images.
- the display substrate 1 may be an OLED (Organic Light-Emitting Diode, organic light emitting diode) display substrate, a liquid crystal display substrate, or a micro Light Emitting Diode (micro LED) display substrate, etc.
- OLED Organic Light-Emitting Diode
- the display substrate 1 includes a driving backplane 101 and a light emitting device layer 102 provided on one side of the driving backplane 101.
- the light emitting device layer 102 may include a plurality of light emitting units,
- the driving backplane 101 can drive each light-emitting unit to emit light independently to display an image.
- the specific display principle is not described in detail here.
- the backlight surface 11 may be the surface of the driving backplane 101 facing away from the light emitting device layer 102
- the light emitting surface 12 may be the surface of the light emitting device layer 102 facing away from the driving backplane 101.
- the main flexible circuit board 2 is provided on the backlight surface 11 of the display substrate 1, and the main flexible circuit board 2 may include a connecting section 21, a fixing section 22, and a test section 23.
- the connecting section 21 is connected to the fixed Between section 22 and test section 23, where:
- the outer peripheral surface of the connecting section 21 may include a first side surface 211 and a second side surface 212 opposite to each other, and the first side surface 211 may extend in a direction parallel to one side of the display substrate 1.
- the orthographic projection of the connecting section 21 on the backlight surface 11 is a rectangle
- the first side surface 211 and the second side surface 212 may be sides corresponding to two opposite sides of the rectangle
- the distance between is not specifically limited here, for example, the distance between the first side surface 211 and the second side surface 212 may be 8mm-12mm, for example 10.7mm.
- the connecting section 21 is a flexible structure.
- the connecting section 21 may include a flexible substrate made of polyimide or other flexible materials, and also include a circuit formed on the flexible substrate.
- the connecting section 21 can be detachably in contact with the backlight surface 11, that is, when the test section 23 is in the first form, the connecting section 21 is freely attached to the backlight surface 11, Under the action of external force, it is bent to be at least partially separated from the backlight surface 11.
- the connecting section 21 may also be fixed on the backlight surface 11 by bonding, welding or other methods.
- the fixing section 22 can be attached to the backlight surface 11, and the fixing section 22 can be fixed to the backlight surface 11 by bonding, welding or other methods.
- One end of the fixing section 22 is connected to the first side surface 211, The other end extends in a direction away from the connecting section 21.
- the fixing section 22 may also be a flexible structure.
- the fixing section 22 may include a flexible substrate made of polyimide or other flexible materials, and also include a circuit formed on the flexible substrate.
- the orthographic projection of the fixed section 22 on the backlight surface 11 is a rectangle, and one end of the fixed section 22 corresponding to a short side of the rectangle is connected to the first side surface 211, which corresponds to the other short side of the rectangle.
- One end of ⁇ extends in the direction away from the connecting section 21, that is, extends to the side of the first side surface 211 away from the second side surface 212.
- the distance between the sides of the fixed section 22 corresponding to the two short sides of the rectangle may be 65 mm-38 mm, for example, 66.95 mm, and the distance is the length of the fixed section 22 in the direction away from the connecting section 21.
- extension direction of the fixing section 22 may be perpendicular to the extension direction of the connecting section 21, that is, perpendicular to the first side surface 211.
- connection port 231 As shown in Fig. 1 to Fig. 4, one end of the test section 23 is connected to the first side surface 211, and the other end has a connection port 231.
- the specific structure of the connection port 231 depends on the test equipment 001 to be connected, and there is no special consideration here. Limited, as long as it can be connected to the test equipment 001 in a pluggable manner and can transmit test signals.
- the test section 23 is a flexible structure, and the test section 23 may also be a flexible structure.
- the test section 23 may include a flexible substrate made of polyimide or other flexible materials, and also include a circuit formed on the flexible substrate.
- connection section 21, the fixed section 22 and the test section 23 of the main flexible circuit board 2 may share the same flexible substrate, that is, the connection section 21, the fixed section 22 and the test section 23 may be an integrated structure,
- the circuits of the main flexible circuit board 2 are distributed in the connection section 21, the fixed section 22 and the test section 23, wherein the fixed section 22 is provided with a circuit binding area to bind the main flexible circuit board 2 with other circuit boards.
- the test section 23 can be bent between the first form and the second form.
- the first form can be an untested or post-tested form.
- the test section 23 and the backlight The surface 11 is attached and extends in a direction away from the connecting section 21.
- the connecting section 21, the fixed section 22 and the test section 23 form a U-shaped structure.
- the length of the fixed section 22 and the test section 23 can be different.
- the connection port 231 is located within the edge of the display substrate 1, that is, the orthographic projection of the test section 23 on the backlight surface 11 is located within the backlight surface 11, so that the test section 23 does not protrude from the edge of the display substrate 1, thereby facilitating the installation in the terminal device. Install to avoid interference with other structures.
- the distance between the side surface of the test section 23 close to the fixed section 22 and the side away from the fixed section 22 can be the same as the distance between the first side surface 211 and the second side surface 212 of the connecting section 21, of course, it can also be different.
- both can be 10.4mm.
- the test section 23 of the first form can be bent to be in the second form.
- the test section 23 In the second form, at least a part of the test section 23 is separated from the backlight surface 11, and Bent toward the side of the second side surface 212 away from the first side surface 211, and the connection port 231 extends beyond the edge of the display substrate 1 to facilitate connection with the test device 001.
- the test section 23 can be released to restore it To the first form.
- the side surface of the test section 23 close to the fixed section 22 is transitionally connected to the first side surface 211 through the crack arrest groove 100, that is, the crack arrest groove 100 is opened at the corner where the test section 23 and the first side surface 211 of the connecting section 21 are connected;
- the crack arrest groove 100 penetrates the main flexible circuit board 2 in a direction perpendicular to the backlight surface 11, that is, in a direction perpendicular to the backlight surface 11, the crack arrest groove 100 exposes the backlight surface 11.
- the crack arrest groove 100 can prevent the test section 23 from tearing, and at the same time, the crack arrest groove 100 can reduce the risk of "dead bending" of the test section 23.
- the orthographic projection of the crack arrest groove 100 on the backlight surface 11 is in an arc shape, such as a circular arc or an elliptical arc.
- the first side surface 211 and the side surface of the test section 23 close to the fixed section 22 are mutually perpendicular planes.
- the shape of the orthographic projection of the crack arrest groove 100 on the backlight surface 11 is a circular arc shape
- the crack arrest groove 100 and the side surface of the test section 23 close to the fixed section 22 are smoothly connected by an arc-shaped transition surface 200
- the crack arrest groove 100 and The first side surface 211 is smoothly transitioned and connected, and the first side surface 211 is tangent to the crack arrest groove 100.
- the orthographic projection of the crack arrest groove 100 on the backlight surface 11 and the orthographic projection of the transition surface 200 on the backlight surface 11 are arcs with the same radius, and the two arcs are circumscribed, And the radius can be 0.5mm.
- the first side surface 211 and the side surface of the test section 23 close to the fixed section 22 are mutually perpendicular planes.
- the orthographic projection of the crack arrest groove 100 on the backlight surface 11 is U-shaped, and the crack arrest groove 100 has two opposite side walls, wherein a side wall of the crack arrest groove 100 is coplanar with the side surface of the test section 23 close to the fixed section 22 , The other side wall intersects the first side surface 211, and the intersection may be perpendicular.
- one side wall of the crack arrest groove 100 intersects with the side surface of the test section 23 close to the fixed section 22, and the other side wall is coplanar with the first side surface 211.
- the number of crack arrest grooves 100 is multiple, and they are sequentially connected between the first side surface 211 and the side surface of the test section 23 close to the fixed section 22, adjacent to each other.
- the two crack arrest grooves 100 are smoothly connected by a smooth curved surface.
- the shape of the orthographic projection of each crack arrest groove 100 on the backlight surface 11 may be the same, for example, both are U-shaped. Of course, the shape of the orthographic projection of different crack arrest grooves 100 on the backlight surface 11 may also be different.
- the number of the crack arresting grooves 100 is two, and the orthographic projections of the two crack arresting grooves 100 on the backlight surface 11 are U-shaped, and the U-shaped openings are perpendicular to each other.
- the crack arrest groove 100 has two opposite side walls, and the distance between the two side walls gradually decreases toward the second side surface 212.
- the orthographic projection of the crack arrest groove 100 on the backlight surface 11 is V-shaped, and the two side walls are two intersecting planes with an angle less than 90°.
- the depth of the crack arrest groove 100 is not greater than 10% of the width of the test section 23, and the depth of the crack arrest groove 100 in the extension direction is: In the extension direction, the distance between the point farthest from the surface of the test section 23 close to the fixed section 22 on the crack arrest groove 100 and the surface of the test section 23 close to the fixed section 22.
- the orthographic projection of the connecting section 21 on the backlight surface 11 is a rectangle
- the first side surface 211 corresponds to a long side of the rectangle
- the extension direction of the orthographic projection of the first side surface 211 on the backlight surface 11 is the rectangular Longitudinal direction.
- the width of the test section 23 in the length direction is 10.4 mm
- the orthographic projection of the crack arrest groove 100 on the backlight surface 11 and the orthographic projection of the transition surface 200 on the backlight surface 11 are A circular arc with a radius of 0.5 mm, that is, the depth of the crack arrest groove 100 in the length direction is 1 mm.
- the display panel of the present disclosure may also have an under-screen fingerprint recognition function, as shown in FIG. 1, FIG. 2 and FIG. 10.
- the display substrate 1 may have a light-transmitting area 300.
- the area 300 may be an open-pore structure, a transparent solid structure.
- the display panel can also include a fingerprint sensing unit 3, which can be arranged on the backlight surface 11, and the light-transmitting area 300 is located in the projection of the fingerprint sensing unit 3 on the backlight surface 11.
- the fingerprint sensing unit 3 can include a photoelectric sensor. It is used to sense the light reflected by the ridge of the finger to generate a signal reflecting fingerprint information.
- the light-transmitting area 300 and the fingerprint sensing unit 3 can be located between the fixed section 22 and the test section 23 in the first form.
- the side surface of the fixed section 22 close to the test section 23 may be provided with a avoidance hole 221, which penetrates the fixed section 22 in a direction perpendicular to the backlight surface 11, and a partial area of the outline of the light-transmitting area 300 It is located in the escape hole 221 and matches the shape of the escape hole 221.
- the surface of the fixing section 22 close to the test section 23 and the first side surface 211 can be smoothly connected through the connecting groove 400, and the connecting groove 400 penetrates in a direction perpendicular to the backlight surface 11.
- the orthographic projection of the connecting groove 400 on the backlight surface 11 may be U-shaped, including two opposite side walls, one side wall is coplanar with the first side surface 211, and the other side wall is close to the fixed section 22 for testing.
- the surfaces of the segments 23 intersect, for example perpendicularly.
- the surface of the fixed section 22 facing away from the test section 23 and the second side surface 212 can be smoothly transitioned through the avoidance gap 500, and the avoidance gap 500 can be perpendicular to the backlight surface 11 The direction penetrates the main flexible circuit board 2.
- the display panel of the present disclosure may further include a touch layer 4 and a flexible touch circuit board 5, wherein:
- the display substrate 1 may also include a touch layer 4 and a flexible touch circuit board 5.
- the touch layer 4 may include touch electrodes.
- the touch electrodes may be provided on the light-emitting surface 12 of the display substrate 1 facing away from the backlight surface 11 in an external manner. On one side, it can also be integrated in the display substrate 1.
- the specific principle and structure of the touch layer 4 are not particularly limited here, as long as the touch function can be realized.
- the flexible touch circuit board 5 is connected to the touch layer 4, is bent to the backlight surface 11, and is connected to the fixed section 22.
- the flexible touch circuit board 5 can be used to output driving signals to the touch layer 4 and can determine the touch area according to the feedback of the touch layer 4.
- the display panel of the present disclosure may further include a chip on film (COF) flexible circuit board 6, which is connected to the display substrate 1 and bent to the backlight surface 11, and connected with the fixed section 22.
- COF chip on film
- the display substrate 1 includes a driving backplane 101 and a light emitting device layer 102 provided on one side of the driving backplane 101.
- the driving backplane 101 has a binding area exposed by the light emitting device layer 102.
- One end of the flip chip flexible circuit board 6 can be It is bound to the binding area, and the other end is bent to the backlight surface 11 and connected to the fixed section 22 so that the main flexible circuit board 2 transmits signals to the display substrate 1 to control the image display.
- the embodiments of the present disclosure provide a display device, which may include the display panel of any of the above-mentioned embodiments.
- the specific structure of the display panel will not be repeated here, and the beneficial effects of the display device can be referred to the display panel. No more details.
- the embodiments of the present disclosure also provide a terminal device, which may include the above-mentioned display device, and its beneficial effects can be referred to the above-mentioned display panel and display device, which will not be repeated here.
- the terminal device of the present disclosure may be an electronic device with an image display function such as a mobile phone, a tablet computer, a TV, etc., which will not be listed here.
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Abstract
Description
Claims (15)
- 一种显示面板,其中,包括显示基板和主柔性电路板,所述显示基板具有背光面;所述主柔性电路板包括:连接段,设于所述背光面,所述连接段的外周面包括相背的第一侧面和第二侧面;固定段,贴附且固定于所述背光面,所述固定段的一端与所述第一侧面连接,另一端向第一侧面背离所述第二侧面的一侧延伸;测试段,一端与所述第一侧面连接,另一端具有连接端口;所述测试段靠近所述固定段的侧面与所述第一侧面通过止裂槽过渡连接,所述止裂槽在垂直于所述背光面的方向上贯穿所述主柔性电路板;在所述第一侧面在所述背光面的正投影的延伸方向上,所述止裂槽的深度不大于所述测试段的宽度的10%;所述测试段为能在第一形态和第二形态间转换的柔性结构;在所述第一形态下,所述测试段与所述背光面贴合,且所述连接端口位于所述显示基板的边缘以内;在所述第二形态下,所述测试段至少部分区域与所述背光面分离,并向所述第二侧面背离所述第一侧面的一侧弯折,且所述连接端口伸出所述显示基板的边缘外。
- 根据权利要求1所述的显示面板,其中,所述止裂槽在所述背光面的正投影呈弧形。
- 根据权利要求2所述的显示面板,其中,所述止裂槽与所述测试段靠近所述固定段的侧面通过一弧形的过渡面平滑过渡连接;所述止裂槽与所述第一侧面平滑过渡连接。
- 根据权利要求3所述的显示面板,其中,所述止裂槽在所述背光面的正投影和所述过渡面在所述背光面的正投影的半径相同。
- 根据权利要求4所述的显示面板,其中,所述止裂槽在所述背光面的正投影和所述过渡面在所述背光面的正投影的半径为0.3mm-0.7mm。
- 根据权利要求1所述的显示面板,其中,所述止裂槽在所述背光面的正投影为U形,所述止裂槽具有两个相对的侧壁,且一所述侧壁与所述测试段靠近所述固定段的侧面共面,另一所述侧壁与所述第一侧面 相交。
- 根据权利要求1所述的显示面板,其中,所述止裂槽的数量为多个,且依次连接于所述第一侧面与所述测试段靠近所述固定段的侧面之间,相邻两个所述止裂槽平滑过渡连接。
- 根据权利要求1所述的显示面板,其中,所述止裂槽具有两个相对的侧壁,且两个所述侧壁的距离向所述第二侧面逐渐减小。
- 根据权利要求1-8任一项所述的显示面板,其中,所述连接段为柔性结构,在所述测试段处于所述第一形态时,所述连接段与所述背光面可分离的接触。
- 根据权利要求1-8任一项所述的显示面板,其中,所述显示基板具有透光区,所述透光区位于所述固定段和处于所述第一形态的所述测试段之间;所述显示面板还包括:指纹感应单元,设于所述背光面,且位于所述固定段和处于所述第一形态的所述测试段之间,所述透光区位于所述指纹感应单元在所述背光面的投影内。
- 根据权利要求10所述的显示面板,其中,所述固定段靠近所述测试段的侧面设有避让孔,所述避让孔沿垂直于所述背光面的方向贯穿所述固定段,所述透光区的轮廓的部分区域位于所述避让孔内,且与所述避让孔的形状匹配。
- 根据权利要求1-8任一项所述的显示面板,其中,所述固定段靠近所述测试段的表面与所述第一侧面通过连接槽平滑过渡连接,所述连接槽沿垂直于所述背光面的方向贯穿所述主柔性电路板。
- 根据权利要求1-8任一项所述的显示面板,其中,所述显示面板还包括:触控层,设于所述显示基板背离所述背光面一侧或集成于所述显示基板内;柔性触控电路板,与所述触控层连接,并弯折至所述背光面,且与所述固定段连接。
- 一种显示装置,其中,包括权利要求1-13任一项所述的显示面 板。
- 一种终端设备,其中,包括权利要求14所述的显示装置。
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