CN111552126A

CN111552126A - Display module

Info

Publication number: CN111552126A
Application number: CN202010381253.3A
Authority: CN
Inventors: 陈仁禄
Original assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-08-18

Abstract

The display module comprises a display panel and a rubber frame, wherein the display panel comprises an array substrate and a color film substrate which are arranged oppositely, the rubber frame supports the display panel, the rubber frame comprises a horizontal plate arranged on the display panel and a side plate arranged at the edge of the display panel, one side of the rubber frame, which is close to the display panel, is provided with at least one conductive part, and the at least one conductive part is connected with a ground wire. The conducting layer is arranged on the rubber frame, static electricity is conducted to the rubber frame, the component of the static electricity entering the electrode of the color film substrate is reduced, the risk of damaging the thin film transistor of the lower substrate is further reduced, and therefore the ESD static electricity resistance of the display panel is improved.

Description

Display module

Technical Field

The invention relates to the technical field of display, in particular to a display module.

Background

With the improvement of liquid crystal display technology, the requirement for the reliability test of the liquid crystal module is more strict, wherein ESD (Electro-Static discharge) is a specification of the reliability test, and is classified as a contact type and a non-contact type (Air mode ESD), and generally, the non-contact type voltage is higher, and is about 15 KV. Especially in the dry area of northern weather, the requirement on air ESD (Electro-Static discharge) electrostatic protection is higher, and the requirement is gradually increased to 12KV and even 15KV from the previous conventional 8KV air discharge. Under the condition of no peripheral measure protection, the protective capability of the liquid crystal module to air ESD can only reach about 4KV, so that the ESD protective capability of the liquid crystal module needs to be improved.

Disclosure of Invention

The invention provides a display module, which aims to solve the technical problem that the air ESD damages a display module and further influences the product yield because the air ESD has poor electrostatic protection capability of the existing display module.

In order to solve the above problems, the technical scheme provided by the invention is as follows:

the invention provides a display module, which comprises a display panel and a rubber frame, wherein the display panel comprises an array substrate and a color film substrate which are oppositely arranged, the rubber frame supports the display panel, and the rubber frame comprises a horizontal plate arranged on the display panel and a side plate arranged at the edge of the display panel; and one side of the rubber frame, which is close to the display panel, is provided with at least one conductive part, and the at least one conductive part is connected with a ground wire.

In at least one embodiment of the present invention, the horizontal plate is disposed close to the color filter substrate.

In at least one embodiment of the present invention, a first electrode layer is disposed on one side of the color filter substrate facing the array substrate, and a gap is formed between the first electrode layer and an edge of the color filter substrate.

In at least one embodiment of the present invention, a horizontal distance between the first electrode layer and the edge of the color film substrate is 1 to 3 mm.

In at least one embodiment of the present invention, the side panel of the glue frame is disposed around the display panel.

In at least one embodiment of the present invention, the side plate of the rubber frame is provided with the conductive member.

In at least one embodiment of the present invention, the conductive member includes a first sub-conductive portion, a second sub-conductive portion, and a third sub-conductive portion, which are connected in sequence, and the first sub-conductive portion, the second sub-conductive portion, and the third sub-conductive portion respectively correspond to three sides of the display panel one to one.

In at least one embodiment of the present invention, the first sub-conductive portion, the second sub-conductive portion and the third sub-conductive portion together form a u-shape.

In at least one embodiment of the present invention, at least one of the first sub-conductive part, the second sub-conductive part, and the third sub-conductive part is connected to the ground line.

In at least one embodiment of the present invention, the conductive component is a conductive foam.

According to the above object of the present invention, there is provided a liquid crystal display device comprising:

the invention has the beneficial effects that: the conducting layer is arranged on the rubber frame, static electricity is conducted to the rubber frame, the component of the static electricity entering the electrode of the color film substrate is reduced, the risk of damaging the thin film transistor of the lower substrate is further reduced, and therefore the ESD static electricity resistance of the display panel is improved.

Drawings

In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a display module according to an embodiment of the invention;

FIG. 2 is a top view of a display module according to an embodiment of the invention;

fig. 3 is a schematic view of an electrostatic discharge path of a display module according to an embodiment of the invention.

Detailed Description

The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.

The display module comprises a display module body, a display module body and a liquid crystal glass, wherein the display module body is provided with a driving circuit and a liquid crystal glass, the driving circuit and the liquid crystal glass are arranged on the display module body, the liquid crystal glass is arranged on the driving circuit, and the liquid crystal glass is arranged on the liquid crystal glass.

As shown in fig. 1, an embodiment of the present invention provides a display module, which includes a display panel 100 and a rubber frame 30, where the rubber frame 30 supports the display panel 100, the rubber frame 30 includes a horizontal plate 31 and a side plate 32, and the display panel 100 includes an array substrate 10 and a color filter substrate 20 that are oppositely disposed, and a liquid crystal layer (not shown in the figure) interposed between the array substrate 10 and the color filter substrate 20.

The horizontal plate 31 is disposed on the display panel 100, and the side plate 32 is disposed at an edge of the display panel 100. The horizontal plate 31 is parallel to the plane of the display panel 100, and the side plate 32 is disposed at the side of the display panel and is parallel to the thickness direction of the display panel.

At least one conductive part 40 is disposed on the inner side (the side close to the display panel) of the rubber frame 30, and at least one conductive part 40 is connected to the ground. When a large ESD voltage is generated, the conductive member 40 can introduce air ESD static electricity to the rubber frame 30, and conduct away through the ground.

In other embodiments, a plurality of conductive members 40 may be disposed on the rubber frame 30 according to the conductive requirement.

Specifically, the horizontal plate 31 is disposed close to the color filter substrate 20, and the conductive component 40 may be disposed at one end of the horizontal plate 31 close to the color filter substrate 20, so as to conduct away the air ESD static electricity on the color filter substrate 20 along the conductive component 40.

As shown in fig. 2, the side panel 32 may be disposed around the display panel 100, and the conductive member 40 may be disposed on the side panel 32 to connect the conductive member 40 to the ground line 50. The conductive members 40 on the side panel 32 may be disposed corresponding to the source side and the gate side of the display panel 100

Generally, a large number of data lines are input to the display panel 100 on the source side of the display panel 100, and a large number of scanning signal lines are input to the display panel 100 on the gate side, so that ESD is highly likely to occur on the source side and the gate side of the display panel 100, and devices on the array substrate 10 are easily damaged by air ESD. Accordingly, the conductive member 40 on the side panel 32 may be disposed corresponding to the source side and the gate side of the display panel 100, and the air ESD on the source side and the gate side is conducted to the conductive member 40, and the static electricity is conducted away through the ground line 50.

Specifically, the conductive members 40 on the side plates 32 may be disposed around the source side and the gate side of the display panel. The conductive member 40 includes a first sub conductive part 41, a second sub conductive part 42, and a third sub conductive part 43, which are connected in sequence, and the first sub conductive part 41, the second sub conductive part 42, and the third sub conductive part 43 respectively correspond to three sides of the display panel 100 one to one. For example, the first sub-conductive part 41 and the third sub-conductive part 43 correspond to two opposite gate sides of the display panel 100, respectively, and the second sub-conductive part 42 corresponds to a source side of the display panel 100.

The first sub-conductive part 41, the second sub-conductive part 42 and the third sub-conductive part 43 form a reverse-U shape together, and the first sub-conductive part 41 is connected with the ground wire 50, so that the second sub-conductive part 42 and the third sub-conductive part 43 are both connected to the ground wire 50, and the air ESD probability of the source side and the gate side is reduced. The ground 50 may be a PCB GND (circuit board ground).

The conductive component 40 may be a conductive foam, which can conduct static electricity and also play a role in buffering and protecting, the conductive component 40 may be attached to the rubber frame 30 through a glue layer, and in other embodiments, the conductive component 40 may be another conductive material, which is not limited herein.

As shown in fig. 1, the color filter substrate 20 includes a first substrate 21 and a first electrode layer 22, the first electrode layer 22 is disposed on a side of the color filter substrate 20 facing the array substrate 30, and a gap is formed between the first electrode layer 22 and an edge of the color filter substrate 20.

The first electrode layer 22 on the color filter substrate 20 is generally a pixel electrode, and in the prior art, an entire electrode layer is usually formed on the first substrate 21, but air ESD enters the lower first electrode layer 22 through the first substrate 21, so as to damage metal devices on the lower plate (the array substrate 10). Therefore, the edge of the electrode layer coated on the whole surface can be exposed, developed and etched through a photomask manufacturing process, and the electrode layer is patterned, so that a certain interval is formed from the first electrode layer 22 to the edge of the first substrate base plate 21, and air ESD static electricity is prevented from entering the first electrode layer 22.

Specifically, the horizontal distance W between the first electrode layer 22 and the edge of the color film substrate 20 is 1-3 mm, so that air ESD static electricity is reduced to enter the first electrode layer 22. In other embodiments, a reasonable gap width can be designed according to product requirements.

The array substrate 10 includes a plurality of thin film transistors arranged in an array, and specifically, the array substrate 10 includes a second substrate 11, a first metal layer 12 disposed on the second substrate, an insulating layer 13 disposed on the first metal layer 12, a second metal layer 14 disposed on the insulating layer 13, a planarization layer 15 disposed on the second metal layer 14, and a second electrode layer 16 disposed on the planarization layer 15.

The first metal layer 12 may be used to form a gate, a scan line, and other signal traces, the second metal layer 14 may be used to form a source/drain, a data line, and other signal traces, the second electrode layer 16 may be a common electrode, and the second electrode layer 16 is connected to the first metal layer 12 and the second metal layer 14 through via holes at corresponding positions to implement signal transmission.

As shown in fig. 3, by disposing the conductive component 40 inside the edge of the horizontal plate 31, while reducing the conductive component of the conductive path (r), the conductive component of the path (r) to the ground 50 is raised, and on the other hand, by disposing the conductive component 40 at the position of the side plate 32 corresponding to the first metal layer and the second metal layer on the lower array substrate 10, the conductive path of the path (r) to the ground 50 can also be raised, thereby preventing the ESD from damaging the metal devices on the array substrate 10.

In addition, through patterning the first electrode layer 22 of the color film substrate 20, a gap between the first electrode layer 22 and the edge of the color film substrate 20 is reserved, so that the air ESD electrostatic component introduced into the first electrode layer 22 by the conductive path (r) is reduced, or the air ESD electrostatic is prevented from entering the first electrode layer 22 along the conductive path (r), and the thin film transistor on the lower plate is prevented from being damaged by ESD electrostatic shock.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. A display module, comprising:

the display panel comprises an array substrate and a color film substrate which are oppositely arranged;

the glue frame supports the display panel and comprises a horizontal plate arranged on the display panel and a side plate arranged at the edge of the display panel; wherein the content of the first and second substances,

one side of the rubber frame, which is close to the display panel, is provided with at least one conductive part, and the at least one conductive part is connected with a ground wire.

2. The display module of claim 1, wherein the horizontal plate is disposed adjacent to the color filter substrate.

3. The display module according to claim 1 or 2, wherein a first electrode layer is disposed on one side of the color filter substrate facing the array substrate, and a gap is formed between the first electrode layer and an edge of the color filter substrate.

4. The display module according to claim 3, wherein a horizontal distance between the first electrode layer and the edge of the color film substrate is 1-3 mm.

5. The display module assembly of claim 1, wherein the side plate of the bezel is disposed around the display panel.

6. The display module according to claim 5, wherein the side plate of the bezel is provided with the conductive member.

7. The display module according to claim 6, wherein the conductive member comprises a first sub-conductive portion, a second sub-conductive portion and a third sub-conductive portion connected in sequence, and the first sub-conductive portion, the second sub-conductive portion and the third sub-conductive portion respectively correspond to three sides of the display panel in a one-to-one manner.

8. The display module of claim 7, wherein the first sub-conductive portion, the second sub-conductive portion and the third sub-conductive portion together form a n-shape.

9. The display module assembly according to claim 8, wherein at least one of the first sub-conductive portion, the second sub-conductive portion and the third sub-conductive portion is connected to the ground line.

10. The display module of claim 1, wherein the conductive member is a conductive foam.