CN213691251U

CN213691251U - Display panel, display module and display device

Info

Publication number: CN213691251U
Application number: CN202022825866.XU
Authority: CN
Inventors: 张文浩
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-07-13
Anticipated expiration: 2030-11-30

Abstract

The utility model relates to a display panel, display module assembly and display device, display panel include the static and walk the line, including the first part and the second part of mutual insulation, the static is walked the line and is located the non-display area and set up around the display area; and two ends of the crack detection wire are respectively connected with the first part and the second part, and the crack detection wire is positioned in the non-display area and arranged around the display area. When detecting display panel crackle through the crack detection line, if display panel has the crackle, the crackle detects the line disconnection, and outside the electric charge that the line was walked to the crackle detection can be walked through static and derive display panel, can prevent to walk the line and the thin film transistor on the array substrate to display panel inside and cause the damage, can effectively avoid showing the emergence of abnormal phenomenon.

Description

Display panel, display module and display device

Technical Field

The utility model relates to a show the field, especially relate to a display panel, display module assembly and display device.

Background

With the popularization of electronic devices, various electronic devices equipped with display screens are becoming common, such as mobile phone screens, displays, electronic billboards, and the like. In order to obtain better visual experience, the requirements of people on the performance, quality and display effect of display screens are higher and higher.

Currently, a Display Panel includes a Liquid Crystal Display (LCD), a Plasma Display Panel (PDP), an Organic Light-emitting diode (OLED) Panel, and the like. The display panel can form a plurality of patterns of the display panel on the motherboard in the manufacturing process, and then the motherboard is cut to finally obtain the discrete display panel. Cracks may be generated at the edges of the display panel during the cutting process, and the cracks may extend into the display panel with the increase of the service time, thereby affecting the service life of the display panel. Therefore, when crack detection is performed after the mother board is cut, a circle of metal wires may be formed at the edge of the display panel, and the crack of the display panel may be determined by detecting parameters of the metal wires. However, the conventional crack detection method may introduce static electricity to affect the display effect of the display panel.

SUMMERY OF THE UTILITY MODEL

The utility model provides a display panel can prevent that electric charge from getting into display panel through the crackle when carrying out the crackle detection to display panel to improve display panel's display effect.

An embodiment of the utility model provides a display panel, include the display area and center on the non-display area of display area, its characterized in that still includes: the electrostatic routing comprises a first part and a second part which are mutually separated, and the electrostatic routing is positioned in the non-display area and arranged around the display area; and two ends of the crack detection wire are respectively connected with the first part and the second part, and the crack detection wire is positioned in the non-display area and arranged around the display area.

According to the utility model discloses an aspect, the width of line is less than to the crackle detection the width of line is walked to static.

According to the utility model discloses an aspect, the crackle detects the line and is located the static is walked the line and is kept away from one side of display area.

According to the utility model discloses an aspect, the crackle detects the line with the line setting is the same layer is walked to static.

According to an aspect of the embodiments of the present invention, the orthographic projection of the first portion on the plane of the display panel and the orthographic projection of the second portion on the plane of the display panel at least partially overlap.

According to an aspect of the embodiment of the present invention, the display panel further includes two binding pads, the binding pads are respectively connected to the first portion and the second portion.

On the other hand, the utility model discloses still improved a display module assembly, display module assembly includes an arbitrary display panel in the above-mentioned embodiment, display module assembly still includes flexible printed circuit board, flexible printed circuit board includes two test pins, display panel with the test pin is through covering the brilliant film connection.

According to the utility model discloses an aspect, flexible printed circuit board still includes two exposed sense terminals in surface and two earthing terminals, the sense terminal is connected respectively test pin, just the earthing terminal is connected respectively the sense terminal.

According to an aspect of the embodiments of the present invention, at least one of the grounding terminal and the detecting terminal is connected through a conductive adhesive.

Further, the utility model also provides a display device, this display device includes the arbitrary display module assembly in the above-mentioned embodiment.

The utility model provides a display panel includes the display area and centers on the non-display area of display area, the static that is located the non-display area is walked the line and is included mutual spaced first portion and second part and set up around the display area, the crack that is located the non-display area detects to walk the line both ends and connect the first portion and the second part that the static was walked the line respectively, and the crack detects to walk the line and set up around the display area, thereby make when walking line detection screen body crackle through the crack detection, if display panel produces the crackle, the crack detects to walk the line and takes place to open circuit, the electric charge that the line was gone on can be through the static is walked outside the line derivation screen body, thereby can prevent to walk the inside thin film transistor who walks line and array substrate of display panel and.

Drawings

Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.

Fig. 1 shows a schematic diagram of a display panel provided according to an embodiment of the present invention;

fig. 2 is a schematic view of a display module according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a display device according to an embodiment of the present invention.

Detailed Description

The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The inventor finds that generally, a crack detection (PCD) trace is designed in a non-display area of a screen body, and is used for detecting whether cracks exist at the edge of the flexible screen body, when crack detection is performed, a detection signal is usually input to the crack detection trace from a detection end of a display panel, whether cracks exist in the display panel is detected by detecting whether the crack detection trace is broken, if cracks exist in the display panel, electric charges on the crack detection trace can enter the display panel through the cracks of the display panel, so that the trace in the display panel and transistors on an array substrate are damaged, and further the display effect of the display panel is influenced.

In order to solve the above problem, embodiments of the present invention provide a display panel, and the embodiments will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram illustrating a display panel according to an embodiment of the present invention. As shown in fig. 1, an embodiment of the present invention provides a display panel 10, where the display panel 10 includes a display area 12 and a non-display area 11 surrounding the display area 12, and an electrostatic trace 112 is disposed in an area of the non-display area 11, the electrostatic trace includes a first portion 1121 and a second portion 1122 that are insulated from each other, and the first portion 1121 and the second portion 1122 are disposed around the display area 12; a crack detection trace 111 is further disposed in the non-display area 11, two ends of the crack detection trace 111 are respectively connected to the first portion 1121 and the second portion 1122 of the electrostatic trace 112, and the crack detection trace 111 at least partially surrounds the display area 12. The utility model discloses a display panel 10 is when passing through crack detection line detection screen body crackle, if display panel produces the crackle, the crack detection line disconnection this moment, and the electric charge on the crack detection line can walk outside the line derivation display panel through static to can prevent that static from walking the thin film transistor on line and the array substrate to display panel is inside to cause the damage, can effectively avoid display panel to show the emergence of abnormal phenomenon.

Further, the width of the crack detection trace 111 is smaller than the width of the electrostatic trace 112, and the trace width refers to the width of the trace on the horizontal plane of the display panel. The utility model discloses a whether the crack detects line 111 and takes place the broken circuit and judge display panel 10 and have the crackle. When the crack detection trace 111 is detected to be broken, it indicates that the crack detection trace 111 is broken, and further indicates that the display panel 10 has cracks. Therefore, when the crack detection trace 111 is provided, the width of the crack detection trace 111 needs to be designed to be small, so that the crack can be generated and broken along with the generation of the crack in the display panel 10. On the contrary, the electrostatic wire 112 needs to collect and guide the static electricity on the display panel 10, so in order to prevent the electrostatic wire 112 from breaking and improve the electrostatic collecting capability of the electrostatic wire 112, the width of the electrostatic wire 112 can be designed to be wider. Therefore, the width of the crack detection trace needs to be set smaller than the width of the electrostatic trace, so that the crack detection trace can be broken when a crack exists in the display panel to detect the crack of the display panel, and the electrostatic trace can be led out from the display panel without being broken when the crack exists in the display panel.

The utility model discloses an in some embodiments, the crack detects 1/2 that the width of walking line 111 is less than or equal to static and walks 112 widths to be greater than or equal to 1/5 of static walking line 112 widths, so set up, can improve the sensitivity that detects the display panel crackle, also can not lead to detecting the mistake because the width undersize that the crack detected the line simultaneously.

In still other embodiments of the present invention, the thickness of the static electricity trace 112 is greater than or equal to 1/2 of the thickness of the film layer disposed on the same layer as the static electricity trace 112, and is less than or equal to the thickness of the film layer disposed on the same layer as the static electricity trace 112, for example, the static electricity trace 112 may be disposed on the same layer as the planarization layer of the display panel, at this time, the thickness of the static electricity trace 112 may be 1/2, 2/3, 3/4 of the planarization layer thickness, or the same as the thickness of the planarization layer, at this time, the electric charge on the crack detection trace can be better blocked to be conducted to the display area 12 of the display panel, so that the anti-static electricity capability of the display panel is improved, thereby.

In still other embodiments of the present invention, the multi-layer static electricity routing 112 can be disposed to increase the way of collecting static electricity, and further block the electric charge from entering the display area 12 of the display panel, so as to more effectively prevent the static electricity from damaging the internal routing of the display panel and the thin film transistor on the array substrate, and avoid the occurrence of abnormal display phenomenon.

In still other embodiments of the present invention, the crack detection trace 111 is located on a side of the electrostatic trace 112 away from the display area 12. The crack of the display panel 10 is usually generated in the edge region of the display panel 10, in order to detect the crack of the display panel more accurately, the crack detection line 111 is disposed on one side of the electrostatic line 112 away from the display area 12, and meanwhile, the crack of the display panel 10 can be avoided so that the electrostatic line 112 is broken, the stability of the electrostatic line 112 is improved, and the crack detection signal on the crack detection line 111 can be also avoided from affecting the display area 12.

Optionally, the crack detection trace 111 and the electrostatic trace 112 are disposed in the same layer. By arranging the crack detection trace 111 and the electrostatic trace 112 on the same layer, the crack detection trace 111 and the electrostatic trace 112 can be prepared in the same process, and the preparation process of the display panel is simplified.

In still other embodiments of the present invention, an orthographic projection of the first portion 1121 of the electrostatic wire 112 on the plane of the display panel 10 and an orthographic projection of the second portion 1122 of the electrostatic wire 112 on the plane of the display panel 10 at least partially overlap. In order to collect the static electricity on the display panel as much as possible, the first portion 1121 and the second portion 1122 of the static electricity trace 112 may be located on different layers, and orthographic projections of the first portion 1121 and the second portion 1122 of the static electricity trace 112 on the plane of the display panel 10 at least partially overlap, so that the static electricity trace 112 surrounds the display area 12 as much as possible, thereby improving the static electricity collection capability of the static electricity trace 112.

In some embodiments of the present invention, the first portion 1121 and the second portion 1122 of the static electricity trace 112 can be disposed in the same film layer of the display panel, and at least a portion of the first portion 1121 of the static electricity trace 112 is located at a side of at least a portion of the second portion 1122 away from the display area 12, i.e., at least a portion of the first portion 1121 of the static electricity trace 112 is disposed around at least a portion of the second portion 1122, so that the static electricity trace 112 can surround the display area 12 as much as possible, thereby improving the static electricity collection capability of the static electricity trace 112.

In another embodiment of the present invention, the display panel 10 includes two bonding pads 113, and the bonding pads 113 are respectively connected to the first portion 1121 and the second portion 1122 of the electrostatic routing 112. Through setting up the binding pad, on the one hand with crack detection signal transmission to crack detection line 111, after having detected the crackle, can walk the static on the line 112 with static again and derive, prevent that the static from damaging the line on the display panel 10, avoid leading to showing unusually, in addition, can also reduce the quantity of non-display area 11 pad, improve the utilization ratio of non-display area 11.

Based on same design, the utility model also provides a display module assembly, include the embodiment of the utility model provides a display panel.

Fig. 2 is a schematic view of a display module according to an embodiment of the present invention. The display module comprises a display panel 10 and a flexible printed circuit board 30, wherein the flexible printed circuit board 30 comprises two test pins 33 (only one of which is shown in fig. 2), and the test pins 33 are electrically connected with the bonding pads 113 through the flip chip film 20, so that the volume of the display module can be reduced. Specifically, the chip on film 20 includes two first pins 21 and two second pins 22, and a path is formed between the first pins 21 and the first pins 22, wherein the first pins 21 are electrically connected to the bonding pads 13 of the display panel 10, respectively, and the second pins 22 are connected to the test pins 33 on the flexible printed circuit board 30, respectively.

Further, the flexible printed circuit board 30 further includes two detection terminals 31 and two ground terminals 33 with exposed surfaces, the detection terminals 31 are respectively connected to the two test pins 33 through traces on the flexible printed circuit board 30, and the two ground terminals 32 are respectively connected to the detection terminals 31, at this time, static electricity on the static electricity trace 112 can reach the ground terminals 32 through the bonding pads 113, the first pins 21, the second pins 22, the test pins 33, and the detection terminals 31, so that the static electricity is led out from the ground terminals 32, thereby preventing the static electricity from accumulating in the display panel, and avoiding the display panel abnormal display caused by the static electricity.

Preferably, at least one of the ground terminal 32 and the detection terminal 31 is connected to each other by a conductive adhesive 34. When the display module is manufactured, crack detection needs to be performed on the display panel 10, crack detection signals need to be input to the crack detection trace 111 of the display panel 10 through the detection ends 31, at this time, if the two detection ends 31 are connected with the grounding end 32, the potentials of the two detection ends 31 are the same, and whether cracks occur on the display panel 10 cannot be detected, so that before crack detection is performed, at least one of the detection ends 31 is not connected with the grounding end 32, after crack detection is completed, the grounding end 32 and the detection end 31 are connected in a manner that the conductive adhesive 34 is coated on the surface of the flexible printed circuit board, and meanwhile, the conductive adhesive 34 covers the detection ends 31 and the grounding end 32, so that corrosion of the detection ends 31 and the grounding end 32 can be prevented, and the service life of the display module is.

Based on same design, the utility model also provides a display device, include the embodiment of the utility model provides a display panel shows module alive.

Specifically, the display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should be taken as limitations of the present invention.

In accordance with the embodiments of the present invention as set forth above, these embodiments do not set forth all of the details nor limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel comprising a display area and a non-display area provided around the display area, characterized by further comprising:

the electrostatic routing comprises a first part and a second part which are insulated from each other, and the electrostatic routing is positioned in the non-display area and arranged around the display area;

and two ends of the crack detection wire are respectively connected with the first part and the second part, and the crack detection wire is positioned in the non-display area and arranged around the display area.

2. The display panel of claim 1, wherein the crack detection trace has a width that is less than a width of the electrostatic trace.

3. The display panel according to claim 1 or 2, wherein the crack detection trace is located on a side of the electrostatic trace away from the display area.

4. The display panel of claim 3, wherein the crack detection trace and the electrostatic trace are disposed in the same layer.

5. A display panel as claimed in claim 1 characterized in that the orthographic projection of the first portion on the plane of the display panel and the orthographic projection of the second portion on the plane of the display panel at least partly overlap.

6. The display panel according to claim 1, wherein the display panel further comprises two bonding pads, the bonding pads being connected to the first portion and the second portion, respectively.

7. A display module comprising the display panel of any one of claims 1-6, the display module further comprising a flexible printed circuit board, the flexible printed circuit board comprising two test pins, the display panel and the test pins being connected by a flip-chip film.

8. The display module according to claim 7, wherein the flexible printed circuit board further comprises two detection terminals and two ground terminals, the detection terminals are respectively connected to the test pins, and the ground terminals are respectively connected to the detection terminals.

9. The display module of claim 8, wherein at least one of the ground terminal and the detection terminal is connected by a conductive adhesive.

10. A display device comprising a display module according to any one of claims 7 to 9.