CN102798994B - LCD (Liquid Crystal Display) array substrate distribution structure - Google Patents

Abstract

The invention discloses a liquid crystal display array substrate structure, which is based on a liquid crystal display panel with a small number of ICs, located in the surrounding part around the pixel display part of the liquid crystal display panel: scanning lines or data lines on the display pixel part are provided The connecting wiring for connection, the adjacent connecting wiring is composed of different layers of metal; the connecting terminal correspondingly connected with the connecting wiring. Through the present invention, adjacent connection wirings are made of different layers of metal, since the distance between metals of different layers can be made smaller than that of metals of the same layer, therefore, the resistance difference between adjacent connection wirings can be ensured value, and the resistance difference between the resistance of the outermost wiring and the wiring connected to the IC center pad is also smaller, which can meet the narrowing of the LCD frame by reducing the spacing between adjacent connecting wiring In this way, the resistance of the connecting wires is equalized, and the distance between adjacent wires and the resistance difference are smaller, so that the display characteristics of the liquid crystal display are improved.

Description

LCD array substrate wiring structure

technical field

The invention relates to the manufacturing field of liquid crystal displays, and more specifically relates to a wiring structure of an array substrate of a liquid crystal display.

Background technique

With the continuous development of science and technology, people's life has also brought great changes. The old-fashioned, bulky, and high-energy-consuming display screens have been replaced by thin, light, and low-energy flat-panel displays, and LCD displays are currently widely used. One of the flat panel monitors used.

The structure of a conventional liquid crystal display includes a liquid crystal display panel and a surrounding part, and the liquid crystal display panel has a display pixel part for displaying desired images according to scanning signals and data signals input to scanning lines and signal lines, and the surrounding part Positioned as a frame around the display pixel portion. In the peripheral part, the display pixel part is connected to the driver IC for the scanning signal and the data signal through the arrangement of connection wiring on the same layer. As shown in Figure 1, it is a partial enlarged plan view of the connection between the surrounding part of a traditional liquid crystal display and an IC. In FIG. 1 , the scan lines or data lines drawn from the display pixel portion 101 are respectively connected to a plurality of connection terminals 104 arranged in an orderly manner in the surrounding portion through connection wires 103 .

It can be seen from FIG. 1 that the distance between the connecting wiring at the center and the connecting terminal 104 is the shortest, and the lengths of successive connecting wirings increase as the distance between the corresponding connecting terminal and the central connecting terminal increases. Depending on the length of the connecting wire, the resistance value of the connecting wire also varies. In the prior art, in order to equalize the resistance values of the connecting wires, the current practice is to make the connecting terminals provide the same scanning signal and data signal to the display pixel part with a curved part, so as to ensure the resistance of the wiring. The values are equal, as shown in Figure 2.

In order to avoid signal coupling, there are restrictions on the spacing of connecting wiring on the same layer, generally greater than or equal to 6um. However, since the number of ICs in the display panel on the liquid crystal display is decreasing, that is, the area of the display pixel portion of the liquid crystal display panel is enlarged, and the surrounding portion of the liquid crystal display is reduced, that is, the area of the frame portion is reduced. Therefore, Under the condition that the pitch of the IC lead-out terminals is getting smaller and smaller, the wiring structure of the liquid crystal display array substrate in the prior art is still used, which can no longer meet the requirements for the resistance difference and pitch of the connecting wiring, thereby reducing the liquid crystal display. The display characteristics of the monitor. Therefore, there is an urgent need for a new structure to meet the requirements for the resistance difference and spacing of connecting wires after the number of ICs is reduced.

Contents of the invention

In view of this, the present invention provides a liquid crystal display array substrate wiring structure to overcome the existing liquid crystal display array substrate wiring structure that cannot meet the resistance difference of the connecting wiring due to the reduction in the number of ICs in the prior art. and spacing requirements.

To achieve the above object, the present invention provides the following technical solutions:

A liquid crystal display array substrate wiring structure, based on a liquid crystal display panel with a small number of ICs, comprising: a peripheral part located around the pixel display part of the liquid crystal display panel;

In said surrounding section:

There are connecting wirings connected to the scanning lines or data lines on the display pixel part, and the adjacent connecting wirings are made of different layers of metal;

A connection terminal connected correspondingly to the connection wiring.

Preferably, the adjacent connecting wires are made of different layers of metal, and the metal is any one or any alloy of molybdenum, aluminum, chromium or copper.

Preferably, the adjacent connecting wires are respectively connected to the scanning line and the data line;

The connection wires connecting the scan lines are scan line layer metals, the connection wires connecting the data lines are data line layer metals, and the scan line layer metals and the data line metals are alternately arranged.

Preferably, the distance between the adjacent connecting wires is less than 6 microns and greater than or equal to 3 microns.

Preferably, the adjacent connecting wires have different widths.

Preferably, the scanning lines or data lines on the display pixel portion are connected to the corresponding driving connections of scanning signals and data signals through connected connecting wires.

Preferably, the connecting wiring is divided into:

a bending portion, the degree of bending of which is set according to the resistance of the connection wiring;

a slanted portion extending obliquely to the scan line or the data line;

and parallel portions extending parallel to the scan lines or data lines.

It can be seen from the above-mentioned technical solutions that, compared with the prior art, the present invention discloses a wiring structure of an array substrate of a liquid crystal display. Through the present invention, adjacent connecting wirings are made of metals of different layers. Moreover, since the spacing between metals of different layers can be smaller than the spacing between metals of the same layer during fabrication, the resistance difference between adjacent connecting wirings and the resistance of the outermost wiring can be guaranteed. The resistance difference between the wires connected to the IC center pad is smaller, and the distance between adjacent connecting wires can be reduced to meet the requirement of equalizing the resistance of the connecting wires when the frame of the liquid crystal display is narrowed, and The spacing and resistance difference between adjacent wirings are smaller, so that the purpose of improving the display characteristics of the liquid crystal display is finally achieved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a partial enlarged plan view of the surrounding part and the IC connection part of a conventional liquid crystal display;

Figure 2 is a schematic diagram of the connection of medium-resistance wiring in a traditional liquid crystal display;

3 is a schematic structural view of a liquid crystal display disclosed in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of wiring of an array substrate of a liquid crystal display disclosed in an embodiment of the present invention.

detailed description

For reference and clarity, descriptions, abbreviations or abbreviations of technical terms used in the following text are summarized as follows:

IC: That is, integrated circuits use semiconductor manufacturing technology to manufacture many transistors, resistors, capacitors and other components on a small single crystal silicon wafer, and combine the components into complete electronic circuits;

pitch: spacing;

μm: length unit, micron;

TFT: ThinFilmTransistor, Thin Film Field Effect Transistor.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It can be seen from the background technology that the schematic diagram of the connection wiring in the prior art, that is, the connection schematic diagram of the medium-resistance wiring of the traditional liquid crystal display is shown in Figure 2, and a plurality of connection terminals are arranged in sequence in IC4 of the liquid crystal display panel. The connection terminals are connected to the scanning lines in the display pixel section 1 through connection wirings 3, respectively. Each connection wiring 3 includes a bent portion 3a, an inclined portion 3b extending obliquely toward the scanning line, and a parallel portion 3c extending substantially parallel to the scanning line.

As shown in FIG. 2 , the bent portion 3 a of the connecting wire 3 located at the center portion is the longest, and the bent portion 3 c of the connecting wire 3 located at the outermost portion is the shortest. Because the resistances of the outermost and central part of the connection wiring 3 cannot be made exactly the same, therefore, the distortion degree of the scanning signal waveform and the data signal waveform provided to the display pixel part 1 through the connection wiring 3 depends on the configuration. There are differences in the length of the lines. Therefore, the voltage written into each pixel is not equal, so that the brightness of the liquid crystal display panel decreases or increases. Among them, the unequal resistance value of the connection wiring connected to the scanning line is manifested on the display panel as the brightness in the vertical direction changes, and the unequal resistance value of the connecting wiring connected to the signal line is manifested in the horizontal direction on the display panel. changes in brightness.

Because the number of ICs in the current liquid crystal display is required to be as few as possible, and the area of the display pixel part of the liquid crystal display panel is enlarged, and the surrounding part of the liquid crystal display, that is, the area of the frame part is reduced. In order to meet the requirement of reducing the area of the frame, it is necessary to reduce the spatial distance for arranging the connecting wires on the basis of ensuring equal resistance values of the connecting wires. Considering that the spacing between wirings of the same layer in the prior art is required to be 6 μm or more, the present invention provides a wiring structure of an array substrate of a liquid crystal display, so that adjacent connecting wirings are made of metals of different layers. , by reducing the spacing between adjacent connecting wirings, in order to satisfy the condition that the frame of the liquid crystal display is narrowed, the resistance of the connecting wirings is equalized, and the spacing and resistance difference between adjacent wirings are smaller, realizing Improvement of display characteristics of liquid crystal displays. The specific structure is described in detail through the following examples.

Embodiment one

Please refer to accompanying drawing 3, for the liquid crystal display disclosed in the present invention comprises a liquid crystal display panel, this liquid crystal display panel has display pixel part 1, a peripheral part 2, and this peripheral part is positioned at the periphery of display pixel part 1, as shown in Figure 3 , also includes a driving IC 41 that provides driving signals to the scan lines and a driving IC 42 that provides data signals to the data lines (the number of driving ICs is not limited to this in practical applications). A plurality of connection terminals arranged sequentially in the drive IC 41 or drive IC 42 are respectively connected to the scanning lines or data lines in the display pixel portion 1 through the connection wiring 3 .

It should be noted that, in the embodiments disclosed in the present invention, the liquid crystal display is based on a TFT structure.

Fig. 4 is a schematic structural diagram of the wiring of the array substrate of the liquid crystal display disclosed in the embodiment of the present invention, which is mainly an enlarged view within the rectangular range defined by the dotted box in Fig. 3 (corresponding to the connected scanning lines for the display pixels).

The connection wiring 3 connected to the scanning line on the display pixel part 1 is mainly provided in the peripheral part 2, and the connection wiring 3 is divided into: a curved part 3a, an inclined part 3b extending obliquely to the scanning line and Parallel portions 3c extending substantially parallel to the scan lines. As shown in FIG. 4 , the bent portion 3 a of the wiring 3 located at the center portion is the longest, and the bent portion 3 a of the wiring 3 located at the outermost portion is the shortest.

In the structure disclosed in the embodiment of the present invention, the above-mentioned adjacent connection wirings 3 are made of different layers of metal (the adjacent connection wirings 3 are identified by hollow lines and solid lines in FIG. 4 ). And the adjacent connecting wires 3 made of different layers of metal are respectively connected to the corresponding connecting terminals, and the connecting terminals are arranged in the IC 41 in sequence.

It should be noted that the above-mentioned adjacent connecting wires 3 are made of different layers of metals, which can be any one of molybdenum MO, aluminum AL, chromium CR or copper CU, or an alloy of any combination of the above metals , or other alloys that can transmit scan signals and data signals.

Similarly, when the data lines are connected by connecting wires, the same structure is adopted for realization. That is, a structure in which adjacent connection wirings 3 are provided using metals of different layers.

On the basis of the above disclosed embodiments of the present invention, when the above-mentioned adjacent connecting wires 3 are respectively connected to the scanning lines and the data lines, the connecting wires 3 connected to the scanning lines are scanning line layer metal, and are connected to The connection wiring 3 of the data line is a data line layer metal, and the scan line layer metal and the data line layer metal are alternately arranged.

Through the use of different layers of metals disclosed in the above embodiments of the present invention to form adjacent connection wirings 3, since the metal resistances of different layers are different, under the condition that the resistance values of the connection wirings 3 are guaranteed to be equal, the corresponding The distance between adjacent connection wirings 3 is reduced to 3 μm, that is, the distance between adjacent connection wirings is less than 6 μm and greater than or equal to 3 μm. Compared with the connecting wires in the prior art, the widths of the connecting wires in different layers are different, and are wider than the connecting wires in the same layer of metal. Therefore, when the distance from the IC to the display area is fixed, the resistance value of the connecting wires, the distance between adjacent connecting wires, and the resistance difference are smaller, which satisfies the requirement for the resistance difference of the connecting wires after the number of ICs is reduced. value and spacing requirements.

Therefore, in summary, through the present invention, the adjacent connection wirings are made of metals of different layers. Since the resistance values between the metals of different layers are different, in order to ensure that the resistance values between the connection wirings are equal, it is possible to pass Reduce the spacing between adjacent connecting wirings to meet the requirement of equalizing the resistance of connecting wirings when the frame of the liquid crystal display is narrowed, and the spacing and resistance difference between adjacent wirings are smaller, so as to finally realize The purpose of improving the display characteristics of liquid crystal displays.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. a LCD (Liquid Crystal Display) array substrate distribution structure, based on IC the LCD that number is lessPlate, is characterized in that, comprising: a periphery that is positioned at the pixel display section surrounding of display panelsPoint;

In described peripheral part:

Be provided with the connection distribution being connected with scan line in described display pixel part or data wire, described companyConnect the adjacent setting of distribution, it is made up of different layers metal;

Connection terminals with the corresponding connection of described connection distribution;

Wherein, in described adjacent connection distribution, a connection distribution is connected with described scan line, anotherConnecting distribution is connected with described data wire;

The connection distribution that connects described scan line is scan line layer metal, and the connection that connects described data wire is joinedLine is data line layer metal, described scan line layer metal and described data wire metal alternative arrangement.

2. structure according to claim 1, is characterized in that, described adjacent connection distribution is not byForm with layer metal, described metal is: any one in molybdenum, aluminium, chromium or copper or arbitrarily alloy.

3. according to the structure described in any one in claim 1 to 2, it is characterized in that, described adjacentThe spacing of connection distribution be less than 6 microns, be more than or equal to 3 microns.

4. according to the structure described in any one in claim 1 to 2, it is characterized in that, described adjacentThe width difference of connection distribution.

5. according to the structure described in any one in claim 1 to 2, it is characterized in that described demonstrationScan line in pixel portion is driven and connects with corresponding sweep signal by the connection distribution connecting, described inData wire in display pixel part is driven and connects with corresponding data-signal by the connection distribution connecting.

6. according to the structure described in any one in claim 1 to 2, it is characterized in that described connectionDistribution is divided into:

Sweep, described sweep arranges degree of crook according to the resistance of described connection distribution;

To the sloping portion of scan line or data wire inclination extension;

And be parallel to the parallel portion that scan line or data wire extend.