CN112767836A - AMOLED display module, flexible display device and electronic equipment - Google Patents
AMOLED display module, flexible display device and electronic equipment Download PDFInfo
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- CN112767836A CN112767836A CN202110005721.1A CN202110005721A CN112767836A CN 112767836 A CN112767836 A CN 112767836A CN 202110005721 A CN202110005721 A CN 202110005721A CN 112767836 A CN112767836 A CN 112767836A
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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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- 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
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract
The invention discloses an AMOLED display module, a flexible display device and an electronic device, wherein the AMOLED display module comprises: the flexible substrate base plate is arranged in a bending area between a display area and a binding area of the flexible substrate base plate; the display area is provided with a pixel circuit, the outer side of the display area is provided with a plurality of signal wires led out from the pixel circuit, and the plurality of signal wires are connected to the binding area through the bending area; the flexible substrate base plate extends from the bending area to the display area and the binding area respectively to form a plurality of transition angles, and at least one transition angle comprises a crack stop structure which is sunken into the binding area.
Description
Technical Field
The invention relates to the field of display, in particular to an AMOLED display module, a flexible display device and electronic equipment.
Background
Due to the full-screen frameless display product, the user can obtain better viewing experience, so that the system is sought after by consumers.
In the prior art, to implement a full-screen frameless design, a flexible substrate carrying pixel circuits and signal lines thereof is usually bent, so that the signal lines of the pixel circuits are located on the back side of the light emitting direction of the pixel circuits.
However, after the flexible substrate is bent in the bending region (Pad bonding), cracks (Crack) are easily generated due to stress concentration, resulting in Crack failure, and the cracks extend into the display panel to further extend to the signal lines, thereby breaking the signal lines, and causing display failure.
Disclosure of Invention
The embodiment of the invention provides an AMOLED display module, a flexible display device and electronic equipment, which are used for solving the problems in the prior art.
In a first aspect, to solve the above technical problem, an embodiment of the present invention provides an AMOLED display module, including: the flexible substrate base plate is arranged in a bending area between a display area and a binding area of the flexible substrate base plate; the display area is provided with a pixel circuit, the outer side of the display area is provided with a plurality of signal wires led out from the pixel circuit, and the plurality of signal wires are connected to the binding area through the bending area;
the flexible substrate base plate extends from the bending area to the display area and the binding area respectively to form a plurality of transition angles, and at least one transition angle comprises a crack stop structure which is sunken into the binding area.
In one possible embodiment, the crack stopper structure comprises:
the device comprises two symmetrically arranged side edges and a bottom edge connecting the two side edges; the side edges and the bottom edges are in rounded transition.
In a possible embodiment, the distance between the two side edges increases in a direction away from the bottom edge.
In a possible embodiment, a rounded transition is formed between a first side edge connected to a second side edge of the bending region and the second side edge;
and a first side edge connected with a third side edge of the binding region is in fillet transition with the third side edge.
In a possible embodiment, a wiring area is disposed outside the display area, and a rounded corner is formed between a first side connected to a fourth side of the wiring area and the fourth side.
In a possible implementation manner, the crack-stopping structure is U-shaped or trapezoidal in the plane of the flexible substrate base plate.
In one possible embodiment, the crack stop structure is a crack stop groove.
In a possible embodiment, each transition corner comprises the crack stop structure recessed into the binding region.
In a second aspect, an embodiment of the present invention provides a flexible display device, including the AMOLED display module according to the first aspect.
In a third aspect, embodiments of the present invention provide an electronic device, which includes the display flexible apparatus according to the second aspect.
Drawings
FIG. 1 is a schematic structural diagram of a conventional AMOLED display module;
FIG. 2 is a schematic view of stress simulation of a transition angle in a bending zone;
fig. 3 is a schematic structural diagram of an AMOLED display module according to an embodiment of the invention;
FIG. 4 is a first schematic structural diagram of a crack arrest structure according to an embodiment of the present invention;
fig. 5 is a second structural schematic view of a crack arrest structure according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a crack stop structure located between a bending region and a bonding region according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a crack stop structure located between a bending region and a display region according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides an AMOLED display module, a flexible display device and electronic equipment, which are used for solving the problems in the prior art.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a conventional AMOLED display module, and fig. 2 is a schematic stress simulation diagram of a transition angle in a bending region. The inventor has found that, in an AMOLED display module (fig. 1 is an AMOLED display module such as a wearable electronic device smart watch), the flexible substrate 1 is generally divided into a display area a (shown by a circular dashed line area in fig. 1) and a binding area B (shown by an area inside a dashed-dotted rectangular frame in fig. 1), and a Bending area C (also referred to as a Pad area, shown by an area inside a dashed-dotted rectangular frame in fig. 1) disposed between the display area a and the binding area B, a boundary of the Bending area C extends to an area outside the display area a, and the binding area C forms a plurality of transition corners 11 (shown by an area inside a dashed-dotted circular frame in fig. 1), the transition corners 11 use a conventional rounded corner design, so that stress concentration is easily formed at the transition corners 11 in a Pad Bending process (stress is larger at other positions in the elliptical dashed-dotted frame in fig. 2, i.e., where stress concentrations are formed), cracks (craks) occur at the transition angles, which aggravate a crak failure when extending inward.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted. The words expressing the position and direction described in the present invention are illustrated in the accompanying drawings, but may be changed as required and still be within the scope of the present invention. The drawings of the present invention are for illustrative purposes only and do not represent true scale.
It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
The AMOLED display module, the flexible display device, and the electronic device provided in the embodiments of the present invention are specifically described below with reference to the accompanying drawings.
Referring to fig. 3, a schematic structural diagram of an AMOLED display module according to an embodiment of the present invention is shown, the AMOLED display module includes:
a flexible substrate 1 disposed at a bending region C (shown as an area within a rectangular dotted line frame in fig. 3) between a display region a (shown as a circular dotted line area in fig. 3) and a binding region B (shown as an area within a dotted line frame in fig. 3) of the flexible substrate 1; pixel circuits (not shown in fig. 3) are disposed in the display area a, and a plurality of signal lines (not shown in fig. 3, such as data lines and scan lines) led out from the pixel circuits are disposed outside the display area a, and are connected to the bonding area B via the bending area C. The bonding region may include a gold finger pad and a trace of a bonded Chip (IC) and a Flexible Printed Circuit (FPCB) board.
The flexible substrate 1 forms a plurality of transition angles 11 (shown as areas within an oval dashed line in fig. 3) extending from the bending region C to the display region a and the binding region B, respectively, and at least one transition angle 11 includes a crack stop structure recessed into the binding region B. As shown in fig. 3, crack stoppers may be provided at all of the 4 transition corners 11, or crack stoppers may be provided at some of the transition corners 11.
By providing the crack stopper structure at the transition angle, stress at the transition angle 11 can be dispersed, and stress concentration can be prevented.
It should be noted that there are actually 4 transition angles 11 in fig. 3, and it should not be understood that there is only one. In fig. 3, the AMOLED module is a top view of the smart watch without Pad bundling support, so that the shape of the AMOLED module is circular, and in practical applications, when the display product is other products, the shape of the AMOLED module may be other shapes (such as rectangle, square, etc.).
Referring to fig. 4 and 5, fig. 4 is a first structural schematic diagram of a crack arrest structure provided in the embodiment of the present invention, and fig. 5 is a second structural schematic diagram of a crack arrest structure provided in the embodiment of the present invention.
The crack arrest structure comprises two symmetrically arranged side edges 11a and a bottom edge 11b connecting the two side edges 11 a; the side edge 11a and the bottom edge 11b are in rounded transition.
As shown in fig. 4, the bottom side 11b may be an arc, and as shown in fig. 5, the bottom side 11b may be a straight line.
In fig. 4 and 5, a dividing line (indicated by a broken line in fig. 4 and 5) is added for convenience of description, and in practical applications, the dividing line is not present, and the two side edges 11a and the bottom edge 11b are of an integral structure.
With continued reference to fig. 4 and 5, the distance d between the two side edges 11a increases in the direction X away from the bottom edge 11b in the crack stop configuration.
The distance between the two side edges of the crack arrest structure is gradually increased in the direction away from the bottom edge, so that transition between the crack arrest structure and the outer edge of the display area and the edge of the binding area is facilitated.
Referring to fig. 6, which is a schematic structural diagram of a crack stop structure located between a bending region and a binding region according to an embodiment of the present invention, a first side 11a connected to a second side C of the bending region C and a second side 1C are rounded; a rounded transition is formed between the first side 11a and the third side 1B, which are connected to the third side B of the binding region B.
Referring to fig. 7, which is a schematic structural view of a crack stop structure between a bending region and a display region according to an embodiment of the present invention, a wiring region (a region shown by a circle in fig. 7) is disposed at an outer side a of the display region, and a rounded corner is formed between a first side 11a and a fourth side a connected to a fourth side a of the wiring region.
In one possible embodiment, the crack stop structure is U-shaped or trapezoidal in the plane of the flexible substrate base plate.
In one possible embodiment, the crack stop structure is a crack stop groove.
In a possible embodiment, each transition corner comprises a crack stop structure recessed into the bonding region.
In the embodiment provided by the invention, as the crack arrest structures which are sunken into the binding regions are arranged in the transition angles which respectively extend from the bending regions in the AMOLED display module to the display regions and the binding regions, the stress of the transition angles is dispersed in the crack arrest structures in the finished Pad bending process, so that the crack problem is prevented from diffusing into the binding regions, the signal lines passing through the binding regions can be effectively prevented from being broken, and the display regions can be normally displayed.
Based on the same inventive concept, embodiments of the present invention provide a flexible display device, which includes the AMOLED display module described above.
Based on the same inventive concept, embodiments of the present invention provide an electronic device including the display flexible apparatus as described above.
The electronic device can be a liquid crystal display, a liquid crystal display screen, a liquid crystal television and the like, and can also be mobile devices and wearable devices such as a mobile phone, a tablet computer, a notebook and the like, such as a smart watch, Virtual Reality (VR) glasses and the like.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. An AMOLED display module, comprising: the flexible substrate base plate is arranged in a bending area between a display area and a binding area of the flexible substrate base plate; the display area is provided with a pixel circuit, the outer side of the display area is provided with a plurality of signal wires led out from the pixel circuit, and the plurality of signal wires are connected to the binding area through the bending area;
the flexible substrate base plate extends from the bending area to the display area and the binding area respectively to form a plurality of transition angles, and at least one transition angle comprises a crack stop structure which is sunken into the binding area.
2. The AMOLED display module of claim 1, wherein the crack stop structure comprises:
the device comprises two symmetrically arranged side edges and a bottom edge connecting the two side edges; the side edges and the bottom edges are in rounded transition.
3. An AMOLED display module as claimed in claim 2, wherein the distance between the two side edges gradually increases in a direction away from the bottom edge.
4. An AMOLED display module as claimed in claim 3, wherein a rounded transition is formed between a first side edge connected with a second side edge of the bending region and the second side edge;
and a first side edge connected with a third side edge of the binding region is in fillet transition with the third side edge.
5. An AMOLED display module as claimed in claim 4, wherein a wiring area is disposed outside the display area, and a rounded corner transition is formed between a first side connected to a fourth side of the wiring area and the fourth side.
6. An AMOLED display module as claimed in any one of claims 1-5, wherein the crack stop structure is U-shaped or trapezoidal in the plane of the flexible substrate base plate.
7. The AMOLED display module of claim 6, wherein the crack stop structure is a crack stop groove.
8. An AMOLED display module as claimed in any one of claims 1-5, wherein each transition corner comprises the crack stop structure recessed into the binding region.
9. A flexible display device, comprising the AMOLED display module as claimed in any one of claims 1-8.
10. An electronic device, characterized in that the electronic device comprises a display flexible apparatus as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110005721.1A CN112767836A (en) | 2021-01-05 | 2021-01-05 | AMOLED display module, flexible display device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110005721.1A CN112767836A (en) | 2021-01-05 | 2021-01-05 | AMOLED display module, flexible display device and electronic equipment |
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| Publication Number | Publication Date |
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| CN112767836A true CN112767836A (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110005721.1A Pending CN112767836A (en) | 2021-01-05 | 2021-01-05 | AMOLED display module, flexible display device and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024041320A1 (en) * | 2022-08-25 | 2024-02-29 | 京东方科技集团股份有限公司 | Display panel and display device |
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Patent Citations (7)
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| JP2012133933A (en) * | 2010-12-20 | 2012-07-12 | Panasonic Corp | Flexible substrate, semiconductor device, and image display unit using the same |
| CN107610593A (en) * | 2016-07-11 | 2018-01-19 | 三星显示有限公司 | Display panel |
| CN109192078A (en) * | 2018-11-12 | 2019-01-11 | 京东方科技集团股份有限公司 | A kind of flexible panel and preparation method thereof and display device |
| CN209000421U (en) * | 2018-11-13 | 2019-06-18 | 昆山国显光电有限公司 | Flexible display unit and the device that can show picture |
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