CN101101390A - Liquid crystal display wiring compensation process - Google Patents

Abstract

The invention is a LCD routing compensation method, belonging to the field of LCD technique, and its technical solution: two conductive films are etched with compensation patterns, which are selected by the following principle: if there is no segment electrode lead or common electrode lead in visible region, filling the same pattern in its blank; if a glass substrate is equipped with leads, and the other glass substrate is blank, filling the blank with non-electrified compensation pattern whose trend and shape are consistent with those of photoetched leads; if the lead width is greater, etching the middle of the compensation pattern into a pattern similar to the leads in the adjacent region. And it can avoid the phenomenon of generating pattern image.

Description

A kind of liquid crystal display wiring compensation process

Technical field

The present invention relates to a kind of liquid crystal display wiring design, belong to the liquid crystal technology field.

Background technology

Liquid crystal display device obtains application more and more widely in electronic installation, its basic comprising is that two glass picture surfaces that are carved with conductive film figure are buckled together, and forms liquid crystal cell.In liquid crystal cell, pour into liquid crystal, stick polaroid at glass surface.Under weak electric field or the action of a magnetic field, the liquid crystal molecule ordering changes, thereby shows overlapping conductive film figure.Because display graphics is two-layer conducting film, the optical characteristics of conducting film and the optical characteristics of glass are different, like this, might just can not watch the display graphics image when having electric field or the action of a magnetic field, influence the outward appearance of liquid crystal display device.In all kinds of liquid crystal display device products, general low-end product uses the base plate glass of square resistance greater than 80 Ω/ロ, conducting film very thin (thickness is about 200 dusts), and display graphics image problem is still very not outstanding; But middle and high end liquid crystal display device (as: driving way more than 64) adopts the base plate glass of square resistance less than 60 Ω/ロ, conducting film thicker (thickness is about 1000 dusts), and figure and picture usually is under the off position and can sees at liquid crystal display device.Along with the widespread use of liquid crystal display device, people are also more and more higher for the quality requirements of LCD product, and this having, the product of " shadow " defective was subjected to the cold reception and the repulsion in market, must be improved.

At present, the measure commonly used of eliminating this improper display graphics image is also respectively to keep the former conducting film that should etch away in the viewing area of the no display graphics of two sheet glass substrates, and in this two-layer conducting film at least one deck do not connect, so can any influence not arranged, and eliminate " shadow " defective to normal graphic presentation.In the industry this design is called Compensation Design.

Compensation Design generally can be divided into two classes, and a class is the blockage graph compensation, and another kind is the bulk graph compensation.The former be, fill up with the blockage figure; The latter then is in the above-mentioned conducting film zone that will keep, and fills up with big block graphics.

But application practice finds that above-mentioned two kinds of methods all have defective.Its subject matter is: concerning the blockage graph compensation, it is easy to produce electrostatic accumulation, influences product quality; Concerning the bulk graph compensation, might a glass be the lead-in wire, and another on glass be a bulk of compensation figure.Because electrostatic induction might demonstrate the photoetching lead-in wire during display work, cause product defective.

Summary of the invention

Technical matters to be solved by this invention is to overcome the defective that present Compensation Design exists, and can eliminate the liquid crystal display wiring compensation process of " shadow " defective again.

The technical scheme that addresses the above problem is:

A kind of liquid crystal display wiring compensation process, it respectively keeps the former conducting film that should etch away in the viewing area of the no display graphics of two sheet glass substrates, in this two-layer conducting film at least one deck do not connect, its improvements are: be carved with compensation figure on described two conducting films, compensation figure is selected by following principle:

As if both not had the segment electrode lead-in wire in the viewing area in two glass substrates, also not had the public electrode lead-in wire, then fill the same figure in its blank space;

If wherein a glass substrate is provided with lead-in wire, and the corresponding position is blank on another glass substrate, then at the compensation figure that does not connect electricity that this blank space is filled with the photoetching lead-in wire moves towards, shape is consistent;

If wherein the wire widths on glass substrate is bigger, then in the middle of the compensation figure of another glass substrate corresponding position, be etched into and figure that the adjacent area lead-in wire is similar.

Above-mentioned liquid crystal display wiring compensation process, described lead-in wire are public electrode lead-in wire or segment electrode lead-in wire.

Adopt this liquid crystal display wiring compensation process, the shape of two-layer conducting film in the viewing area of the no display graphics of liquid crystal display device, move towards consistent, even static is arranged, it is very little that its electrostatic potential also differs, and can not produce shade because of the static cause.According to test, the present invention does experiment with 8～240 products that drive way, even under the stringent condition with square resistance 15 Ω/ロ processing, does not all have the phenomenon of the demonstration lead-in wire shadow of electrostatic induction generation.

Description of drawings

Fig. 1 is a liquid crystal display device planar structure synoptic diagram;

Fig. 2 is a segment electrode wiring synoptic diagram;

Fig. 3 is the public electrode synoptic diagram;

Fig. 4, Fig. 5 are respectively big block graphics and blockage graph compensation design diagrams in the prior art.

Each mark is as follows among the figure: 1, glass edge; 2, edge sealing frame; 3, oriented film silhouette edge; 4, viewing area; 5, external electrode; 6, public electrode compensating line; 7, white space compensation figure; 8, public electrode lead-in wire; 9, segment electrode lead-in wire; 10, public electrode exit; 11, segment electrode compensating line; 12, displaying contents; 13, width is than the big bus contact conductor; 14, width is than the compensating line of big bus electrode; 15, generous block compensation; 16, blockage compensation.

Embodiment

Can see from Fig. 4, Fig. 5, in prior art, two kinds of Compensation Design schemes that adopt in the liquid crystal display device production are respectively blockage compensation figure and bulk graph compensation, since the photoetching of these two kinds of Compensation Design figures lead-in wire all with the photoetching lead-in wire of display graphics in trend with arrange that it doesn't matter, though therefore eliminated original figure and picture, because the new defective of generation of static electricity.The center section of LCDs is viewing area 4 among the present invention, and it is meant the LCDs zone that can see figure in the assembling behind the shell.The composition dot matrix is made of public electrode glass substrate and segment electrode glass substrate, and the former is a column electrode, and the latter is the row electrode, and each personal electrode of each row connects draws, and is referred to as public electrode; Vertically each is listed as each personal electrode and connects and draw, and is referred to as segment electrode.Paste oriented film on the glass substrate among the present invention, oriented film is for obtaining required Liquid Crystal Molecules Alignment, at the special material that applies on the glass substrate thin film through forming on glass substrate after the heat treatment for solidification again.Alleged edge sealing frame is meant bonding and support goes up lower glass substrate, plays the glue frame of encapsulated liquid crystals box effect among the present invention.

The photolithography edition territory cabling after Fig. 1～3 have shown liquid crystal display device displaying contents figure respectively and increased compensation figure and the design of compensated part.Wherein, Fig. 2 has shown segment electrode compensation synoptic diagram, label 14 among the figure promptly is to be the compensation of 13 public electrode lead portion to label among Fig. 3, this is because this part wire widths big (so-called wire widths be index wire with the size of current vertical direction), therefore, although it is a lead-in wire, also to compensate.In addition, during compensation, the figure that it is etched in the middle of compensation figure and the adjacent area lead-in wire is similar has carried out etching though so-called middle etching is meant in most of zone of lead-in wire, has still kept current channel in the marginal portion of lead-in wire.Label among Fig. 2 is that 6 public electrode compensating line is to be the compensation of 8 public electrode lead portion to the label among Fig. 3.Label 7 among Fig. 2 promptly is the compensation to public electrode lead-in wire blank parts in the appropriate section among Fig. 3.Can see from Fig. 2,3, segment electrode part and public electrode part at the liquid crystal display device photolithography edition territory, compensation figure is filled up the planless white space in LCDs, and not with former figure stack, the photoetching lead-in wire of compensation figure is consistent with the photoetching lead-in wire trend that constitutes former figure.Adopt this liquid crystal display wiring compensation process, the photoetching lead-in wire of former figure can not come out because of electrostatic induction, avoided producing the phenomenon of original figure and picture, also can not cause electrostatic accumulation and disruptive conduction film.Through being 240 to do experiment to driving way, there is not electrostatic induction to show the lead-in wire phenomenon from driving way 8; And with square resistance 15 Ω/ロ processing, product has also reached Expected Results, has solved the difficult problem during liquid crystal display device is produced.

Claims (2)

1. liquid crystal display wiring compensation process, it respectively keeps the former conducting film that should etch away in the viewing area of the no display graphics of two sheet glass substrates, in this two-layer conducting film at least one deck do not connect, it is characterized in that, be carved with compensation figure on described two conducting films, compensation figure is selected by following principle:

As if both not had the segment electrode lead-in wire in the viewing area in two glass substrates, also not had the public electrode lead-in wire, then fill the same figure in its blank space;

If wherein a glass substrate is provided with lead-in wire, and the corresponding position is blank on another glass substrate, then at the compensation figure that does not connect electricity that this blank space is filled with the photoetching lead-in wire moves towards, shape is consistent;

If wherein the wire widths on glass substrate is bigger, then in the middle of the compensation figure of another glass substrate corresponding position, be etched into and figure that the adjacent area lead-in wire is similar.

2. liquid crystal display wiring compensation process according to claim 1 is characterized in that: described lead-in wire is public electrode lead-in wire or segment electrode lead-in wire.

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