CN107145015B

CN107145015B - Display panel

Info

Publication number: CN107145015B
Application number: CN201710526090.1A
Authority: CN
Inventors: 唐维; 卢改平; 刘元甫; 张嘉伟
Original assignee: Wuhan China Star Optoelectronics Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Technology Co Ltd
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2020-08-07
Anticipated expiration: 2037-06-30
Also published as: CN107145015A

Abstract

The invention provides a display panel. The display panel includes: the display device comprises a substrate, a plurality of signal input pins, a plurality of signal output pins and a plurality of driving IC, wherein the substrate is provided with a display area and a non-display area, the non-display area is provided with the driving IC, the driving IC comprises the signal input pins and the signal output pins, a clearance area is formed between the signal input pins and the signal output pins, and the clearance area is provided with a capacitor structure; the capacitor structure comprises a first winding, a second winding and a first insulating layer positioned between the first winding and the second winding; the first winding, the first insulating layer and the second winding are sequentially stacked; the first winding wire or the second winding wire is electrically connected with the signal input pins. The display panel is additionally provided with a capacitor structure in a clearance area between the signal input pin and the signal output pin of the driving IC, so that when static electricity is conducted from the cutting line to the panel, the capacitor structure can store the conducted static electricity, and the static protection capability of the IC side of the panel is improved.

Description

Display panel

Technical Field

The invention relates to the field of liquid crystal panel manufacturing, in particular to a display panel.

Background

In the contemporary information society, the importance of displays as a visual information transmission medium is further strengthened, and displays are being developed toward the trend of lighter, thinner, lower power consumption, lower cost, and better image quality in order to dominate in the future.

Liquid Crystal displays (L liquid Crystal displays, L CD) have many advantages such as thin body, power saving, no radiation, etc., and are widely used, for example, in liquid Crystal televisions, mobile phones, Personal Digital Assistants (PDAs), digital cameras, computer screens or notebook screens, etc., which are dominant in the flat panel field.

Most of the existing liquid crystal displays in the market are backlight liquid crystal displays (lcds), which include a liquid crystal display panel and a backlight module (backlight module). The liquid crystal display panel operates on the principle that liquid crystal molecules are filled between a thin film Transistor Array Substrate (TFT Array Substrate) and a color filter Substrate (color filter, CF), and a driving voltage is applied to the two substrates to control the rotation direction of the liquid crystal molecules, so that light of the backlight module is refracted out to generate a picture.

In the active liquid crystal display, each pixel is electrically connected with a TFT, a grid electrode (Gate) of the TFT is connected to a horizontal scanning line, a Drain electrode (Drain) is connected to a data line in the vertical direction, and a Source electrode (Source) is connected to a pixel electrode. Applying sufficient voltage to the horizontal scanning lines can turn on all TFTs electrically connected to the horizontal scanning lines, so that signal voltage on the data lines can be written into the pixels, and the transmittance of different liquid crystals can be controlled, thereby achieving the effect of controlling color and brightness. The Array substrate line driving technology (GOA) is a driving method for realizing line-by-line scanning of a Gate by fabricating a Gate line scanning driving circuit on a TFT substrate by using an Array (Array) process of a conventional thin film transistor liquid crystal display. The GOA technology can reduce the bonding process of an external Integrated Circuit (IC), thereby increasing the productivity and reducing the product cost, and the liquid crystal display panel can be more suitable for manufacturing narrow-frame or frameless display products.

At present, with the continuous development of liquid crystal displays, lightness and thinness have become the main development direction. In the prior art, in order to make the liquid crystal display panel light and thin, the distance from the wiring around the panel to the glass cutting edge is reduced, and the antistatic (ESD) capability of the wiring is also reduced. The display panel will generate static electricity in different degrees in each process; for example, when a panel is cut, the risk that electrostatic shock generated by friction between the cutter wheel and the panel damages IC side devices such as Flexible Printed Circuit (FPC) pins (pins) and IC bonding pins is increased, so that a product is poor and the quality of the product is reduced.

Therefore, the prior art has defects and needs to be improved urgently.

Disclosure of Invention

The invention aims to provide a display panel.

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

the present invention provides a display panel including: the display device comprises a substrate and a plurality of driving circuits, wherein the substrate is provided with a display area, a part between the edge of the substrate and the boundary of the display area forms a non-display area, the non-display area is provided with a driving IC, the driving IC comprises a plurality of signal input pins and a plurality of signal output pins, a clearance area is formed between the signal input pins and the signal output pins, and a capacitor structure is arranged at the clearance area;

the capacitor structure comprises a first winding, a second winding and a first insulating layer positioned between the first winding and the second winding; the first winding, the first insulating layer and the second winding are sequentially stacked; the first winding or the second winding is electrically connected with the signal input pins.

In some embodiments, the capacitor structure extends along a cutting line direction of the substrate.

In some embodiments, the capacitor structure is in the shape of an elongated rectangle.

In some embodiments, the display panel further includes a flexible circuit board, the flexible circuit board has a plurality of signal pins, the signal pins are close to the cutting lines of the substrate, the flexible circuit board is electrically connected to the substrate through the signal pins, and both the first winding and the second winding are electrically conductive.

In some embodiments, the signal pins are arranged side by side along a cutting line direction of the substrate.

In some embodiments, the signal input pins are arranged side by side along a cutting line direction of the substrate.

In some embodiments, the signal output pins are arranged side by side along a cutting line direction of the substrate.

In some embodiments, the first wire is located on the substrate, the first insulating layer covers the first wire, the second wire is located on the first insulating layer and opposite to the first wire, and the second wire is electrically connected to the signal input pins to form a ground line.

In some embodiments, a second insulating layer is disposed on the second winding.

In some embodiments, the second winding is made of indium tin oxide.

Compared with the prior display panel, the display panel provided by the embodiment of the invention comprises the following components: the display device comprises a substrate, a plurality of signal input pins, a plurality of signal output pins and a plurality of driving IC, wherein the substrate is provided with a display area and a non-display area, the non-display area is provided with the driving IC, the driving IC comprises the signal input pins and the signal output pins, a clearance area is formed between the signal input pins and the signal output pins, and the clearance area is provided with a capacitor structure; the capacitor structure comprises a first winding, a second winding and a first insulating layer positioned between the first winding and the second winding; the first winding, the first insulating layer and the second winding are sequentially stacked; the first winding wire or the second winding wire is electrically connected with the signal input pins. The display panel is additionally provided with a capacitor structure in a clearance area between a signal input pin and a signal output pin of the driving IC, so that when static electricity generated by friction between the cutter wheel and the substrate is conducted into the panel from a cutting line during panel cutting, the capacitor structure can store the conducted static electricity and consume the static electricity, and compared with the situation that only one grounding winding is arranged, the capacity of storing the static electricity at the position is improved, and the static electricity protection capacity of the IC side of the panel is improved.

Drawings

Fig. 1 is a schematic structural diagram of a display panel according to a preferred embodiment of the present invention.

Fig. 2 is another schematic structural diagram of a display panel according to a preferred embodiment of the invention.

Fig. 3 is a schematic cross-sectional view of a capacitor structure according to an embodiment of the invention.

Fig. 4 is another schematic cross-sectional view of a capacitor structure according to an embodiment of the invention.

Detailed Description

The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc. refer to 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, blocks having similar structures are denoted by the same reference numerals.

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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel according to a preferred embodiment of the present invention. As shown in fig. 1, the display panel of the preferred embodiment includes: a substrate 100 having a display region S, a non-display region being defined by a portion between an edge of the substrate 100 and a boundary of the display region S, and a driving IC10 being disposed at the non-display region P, wherein the driving IC10 includes a plurality of signal input pins 11 and a plurality of signal output pins 12, a clearance area a is formed between the plurality of signal input pins 11 and the plurality of signal output pins 12, and a capacitor structure 13 is disposed at the clearance area a;

the capacitor structure 13 includes a first winding 131, a second winding 133, and a first insulating layer 132 between the first winding 131 and the second winding 133; the first wire 131, the first insulating layer 132, and the second wire 133 are sequentially stacked; one of the first winding 131 and the second winding 133 is electrically connected to the signal input pins 11, and both the first winding 131 and the second winding 133 are electrically conductive.

In a specific implementation process, a TFT array substrate, a liquid crystal layer, and a color film substrate are disposed in the display region S of the substrate 100. The TFT array substrate may include: the pixel structure comprises a grid electrode, an insulating material layer, an active layer, an insulating material layer, a source drain electrode, an insulating material layer, a common electrode, an insulating material layer and a pixel electrode.

With continued reference to fig. 1, in some embodiments, the display panel may further include a flexible circuit board having a plurality of signal pins 14, the plurality of signal pins 14 being located near the cutting line L of the substrate 100, the flexible circuit board being electrically connected to the substrate 100 through the plurality of signal pins 14.

As shown in fig. 1, the signal pin 14 is located on a side of the substrate 100 close to the cutting line L, the signal input pin 11 of the driving IC10 is located on a side of the signal pin 14 away from the cutting line L, the capacitor structure 13 is located on a side of the signal input pin 11 away from the signal pin 14, and the signal output pin 12 is located on a side of the capacitor structure 13 away from the signal input pin 11.

In some embodiments, a plurality of pads (pads) are disposed on the substrate 100 near the cutting line L, and a plurality of signal pins 14 of the flexible circuit board can be packaged and fixed on the substrate 100 through a soldering process, so that the flexible circuit board is electrically connected to the substrate 100.

Referring to fig. 1, in some embodiments, several signal pins 14 of the flexible circuit board are arranged side by side along a cutting line L of the base 100.

Likewise, in some embodiments, the signal input pins 11 of the driver IC10 are arranged side by side along the cutting line L of the substrate 100.

Similarly, in some embodiments, the signal input/output pins 12 of the driver IC10 are arranged side by side along the cutting line L of the substrate 100.

In practical applications, when the panel is cut, static electricity generated by friction between the cutter wheel and the substrate 100 is conducted into the substrate 100 from the cutting line L, and is first conducted to the signal pin 14 of the flexible circuit board, then the static electricity is conducted to the signal input pin 11 of the driving IC10 from the signal pin 14, and then the static electricity is conducted to the capacitive structure 13 from the signal input pin 11, and the capacitive structure 13 can store the static electricity due to its own capacitance characteristics, so as to prevent the static electricity from continuing to be conducted into the panel.

In some embodiments, since the clearance area a is actually narrow, the capacitive structure 13 may be designed to extend along the cutting line L of the substrate 100 in order to improve the capacity of the capacitive structure 13 to store static electricity.

In practical applications, the design of the capacitor structure 13 may be various, for example, as shown in fig. 1, the capacitor structure 13 may be linear. That is, the first winding 131 is a straight line, and the second winding 133 is a straight line.

In some embodiments, in order to further improve the power storage capability of the capacitor structure 13, referring to fig. 2, the capacitor structure 13 may be designed to have an elongated rectangular shape. That is, the first winding 131 has an elongated rectangular shape, and the second winding 133 has an elongated rectangular shape.

In some embodiments, the first wire 131 is disposed on the substrate 100, the first insulating layer 132 covers the first wire 131, the second wire 133 is disposed on the first insulating layer 132 opposite to the first wire 131, and the second wire 133 is electrically connected to the signal input pins 11 to form a ground line.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a capacitor structure 13 according to an embodiment of the present invention. The first winding 131 may be made of a metal layer deposited before the second winding 133. For example, the first winding 131 may be prepared simultaneously with the gate lines of the panel. And the second routing line 133 may be simultaneously prepared with the source line of the panel.

Referring to fig. 4, in some embodiments, a second insulating layer 134 may be disposed on the second winding wire 133.

In some embodiments, the first wire 131 is disposed on the substrate 100, the first insulating layer 132 covers the first wire 131, the second wire 133 is disposed on the first insulating layer 132 opposite to the first wire 131, and the first wire 131 is electrically connected to the signal input pins 11 to form a ground line.

Specifically, the first routing wire 131 may be prepared simultaneously with the source line of the panel. The second wiring line 133 may be prepared from a common electrode layer, a pixel electrode material layer, deposited behind the first wiring line 131. For example, the second wire 133 may be simultaneously prepared with the pixel electrode of the panel.

In some embodiments, the second winding wire 133 may be made of indium tin oxide.

As can be seen from the above, the display panel provided in the embodiment of the present invention includes: the display device comprises a substrate, a plurality of signal input pins, a plurality of signal output pins and a plurality of driving IC, wherein the substrate is provided with a display area and a non-display area, the non-display area is provided with the driving IC, the driving IC comprises the signal input pins and the signal output pins, a clearance area is formed between the signal input pins and the signal output pins, and the clearance area is provided with a capacitor structure; the capacitor structure comprises a first winding, a second winding and a first insulating layer positioned between the first winding and the second winding; the first winding and the second winding are arranged in a stacked mode; the first winding wire or the second winding wire is electrically connected with the signal input pins. The display panel is additionally provided with a capacitor structure in a clearance area between a signal input pin and a signal output pin of the driving IC, so that when static electricity generated by friction between the cutter wheel and the substrate is conducted into the panel from a cutting line during panel cutting, the capacitor structure can store the conducted static electricity and consume the static electricity, and compared with the situation that only one grounding winding is arranged, the capacity of storing the static electricity at the position is improved, and the static electricity protection capacity of the IC side of the panel is improved.

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 panel, comprising:

the display device comprises a substrate and a plurality of driving circuits, wherein the substrate is provided with a display area, a part between the edge of the substrate and the boundary of the display area forms a non-display area, the non-display area is provided with a driving IC, the driving IC comprises a plurality of signal input pins and a plurality of signal output pins, a clearance area is formed between the signal input pins and the signal output pins, and a capacitor structure is arranged at the clearance area;

the capacitor structure comprises a first winding, a second winding and a first insulating layer positioned between the first winding and the second winding; the first winding, the first insulating layer and the second winding are sequentially stacked; the first winding or the second winding is electrically connected with the signal input pins, and both the first winding and the second winding can be conductive;

the second winding is positioned on the first insulating layer and opposite to the first winding, the first winding comprises two groups, a space exists between the two groups of the first winding, the second winding comprises two groups, and a space exists between the two groups of the second winding;

the first wire is simultaneously formed with a source line of the panel, and the second wire is simultaneously formed with a pixel electrode of the panel.

2. The display panel according to claim 1, wherein the capacitor structure extends in a direction of a cutting line of the substrate.

3. The display panel of claim 2, wherein the capacitive structure is in the shape of an elongated rectangle.

4. The display panel of claim 1, wherein the display panel further comprises a flexible circuit board having a plurality of signal pins, the plurality of signal pins being located near the cutting lines of the substrate, the flexible circuit board being electrically connected to the substrate through the plurality of signal pins.

5. The display panel according to claim 4, wherein the plurality of signal pins are arranged side by side in a direction of a cutting line of the substrate.

6. The display panel according to claim 5, wherein the signal input pins are arranged side by side along a cutting line direction of the substrate; the signal output pins are arranged side by side along the cutting line direction of the substrate.

7. The display panel of claim 1, wherein the first wire is on the substrate, the first insulating layer covers the first wire, the second wire is on the first insulating layer opposite to the first wire, and the second wire is electrically connected to the signal input pins to form a ground line.

8. The display panel according to claim 7, wherein a second insulating layer is disposed on the second wire.

9. The display panel according to claim 1, wherein a material for preparing the first winding is a metal; the second winding is made of metal.

10. The display panel according to claim 1, wherein a material for preparing the first winding is a metal; the second winding is made of indium tin oxide.