CN1540396A

CN1540396A - Method and devoce for arranging conductive metal wire on display faceplate possessing point discharge

Info

Publication number: CN1540396A
Application number: CNA031222846A
Authority: CN
Inventors: 陈志明; 叶士平
Original assignee: Wintek Corp
Current assignee: Wintek Corp
Priority date: 2003-04-25
Filing date: 2003-04-25
Publication date: 2004-10-27
Anticipated expiration: 2023-04-25
Also published as: CN100349038C

Abstract

The invention follows ITO wiring mode (arc shape at turning point, conducting metal wire frame covers periphery of straight conducting metal wire). Under condition of not affecting on LCD screen and value of resistance of wiring, adding sharp-angled metal pattern causes electric static discharging to wiring pattern in releasing zone so as to reach following purposes: dissipation of static electricity, preventing wires from burning, and preventing module from inference from static.

Description

The display panel conductive metal line layout method and the device of tool point discharge

Technical field

The present invention relates to a kind of display panel conductive metal line layout method and device of tool point discharge, relate in particular to a kind of point discharge principle can being used on LCD metallic circuit (ITO) layout, so that the LCD module can the utmost point in the short time with electrostatic charge dissipation, and then the raising antistatic effect, this method is the Design Conception that has innovation.

Background technology

In view of the LCD module when running into moment during the surging electrostatic charge, easily cause burning of LCD conducting metal circuit (ITO), and then influence its module function, therefore in whole module design, need to integrate electrostatic protection apparatus, and general design needs to add electrostatic discharge protection circuit or assembly, cause the volume of LCD module or IC to increase, and cost is improved.

For example, " earthing device (Grounding device for a portable radio terminal) that is used for portable radio terminal " patented claim that the U.S. is 20020088629A1 number, it mainly is a kind of device that ground connection can be provided in conjunction with upper and lower plate, make the RF end be attached to main body, and LCD also is attached to the RF end with combining of FPC, static on the LCD can be transmitted on the main body via FPC, reach electrostatic charge and eliminate.

" the liquid-crystal apparatus driver (Liquid crystal device driver Circuit for electrostatic dischargeprotection) that is used for electrostatic discharge (ESD) protection " patented claim that the U.S. is 20020105512A1 number; it mainly is a kind of LCD driving circuit with electrostatic defending; this circuit comprises N the Pad of input at first; and N volt voltage (N＞1) of corresponding respectively input at first; electrostatic protection device is attached to individually on the Pad, and all protective devices can comprise thin film transistor (TFT) (Thin gate-oxide transistor).

" panel of LCD (Liquid crystal display panel having electrostatic dischargeprevention circuitry) " patented claim that the U.S. is 6337722B1 number with ESD protection circuit; it mainly is a kind of liquid crystal display plane; include electrostatic discharge protection circuit; this driving circuit links many brake cables (gate lines) on data line, touch brake cable with electrostatic dissipation by static.

" charging device pattern esd protection circuit (ChargedDevice Mode ESD Protection Circuit) " patented claim that No. the 5901022nd, the U.S. mainly is a kind of protection circuit of assembly charge mode static discharge mould.

" be used for the transistorized N edge element of multiple-unit topological design (N-Sided Polygonal CeU Layout for Multiple Cell Transistor " patent case of No. the 5852315th, this U.S.) ", mainly be the transistor component that a kind of novel layout type is realized the CMOS (Complementary Metal Oxide Semiconductor) integrated circuit.

" exempting to lock esd protection circuit (Latchup-Free Fully-protected CMOS On-Chip ESDProtecttion Circuit) in the full guard CMOS chip " patented claim that Japan is 08-288404 number; mainly be an ESD protection circuit, can provide four kinds of different static to imitate the input stage of the comprehensive protection CMOS of power path integrated circuit.

" ESD protection circuit (ESD Protection Circuit with Gate-Couple SCRStructure) with gate coupling silicon control rectifier structure " patented claim that Japan is 09-162303 number mainly is that ESD protection circuit of the present invention is made of gate coupling PTLSCR and NTLSCR assembly.

This known " ESD protection circuit of a kind of VDD and VSS " solution mainly is an ESD protection circuit, be connected between the VDD and VSS power lead of integrated circuit, when static discharge took place, this protection circuit can provide a short circuit channel to come the electric current of bypass static discharge.

Again, " assembly charge mode ESD protection circuit " solution case that this is known mainly is the protection circuit that proposes a kind of assembly charge mode static discharge mould.The disappearance that is had with regard to aforesaid each patent case is as follows:

1, at the perhaps antistatic component that powers up on glass: shortcoming is be difficult for to realize on the processing procedure, easily causes glass fragmentation faced during because of connection (Bonding) assembly on board, and cabling space diminishes, and the design space diminishes relatively.

2, design ESD protective device on FPC: shortcoming is to prevent the harm of system static fully, because static is not to be entered by FPC fully, also might enter from ITO on glass.

3, the simple raising walks impedance values: shortcoming is when making power transfer become heat energy, easily because of the change of cabling thickness, produces heat and concentrates and be difficult for heat radiation and burn short circuit.

4, resistance value is low excessively: can't reach antistatic protection function.

5, resistance value is too high: can cause numeral, analog signal decay because of impedance is too high, influence the IC task performance.

Summary of the invention

Fundamental purpose of the present invention, be to solve above-mentioned traditional defective, avoid defective to exist, the present invention adopts the mode of dredging, electrostatic charge is dredged the area of can dissipating, avoid moment high-octane electrostatic charge that conducting wire (ITO) burnt, thereby reach the anti-system of static effect, the present invention is except simplifying module design (need not increase the electrostatic defending assembly), simplifying processing procedure (avoiding increasing the processing procedure program) simultaneously, and can promote the antistatic harm ability of LCD module simultaneously, this technology there be very big benefiting on the module industrial utilization.

In order to achieve the above object, the present invention adopts new ITO distribution form, with continuity ITO cabling mode (turning point circular arc, straight horizontal conductive metal wire periphery are with the conducting metal wire frame), under the situation that does not influence LCD display frame and cabling resistance, add the metal pattern of tool wedge angle, assemble and the release electric charge with guiding electrostatic charge to this district, when the LCD module bears electrostatic charge, can dredge at most advanced and sophisticated thus quickly and effectively place, avoid the module function to be subjected to electrostatic influence.

Description of drawings

Fig. 1-the 1st, LCD display panel synoptic diagram of the present invention.

Fig. 1-2 is the local enlarged diagram for Fig. 1-1 the right.

Fig. 1-the 3rd is the local enlarged diagram on Fig. 1-1 left side.

Embodiment

Relevant detailed content of the present invention and technical descriptioon, existing conjunction with figs. is described as follows:

Seeing also shown in Fig. 1-1, is LCD display panel synoptic diagram of the present invention.As shown in the figure: the conductive metal line layout method of the LCD display panel of tool point discharge of the present invention, adopt new ITO distribution form, make the LCD module at electric charge surging that static produced, utilize point discharge, can dissipate rapidly, avoiding the influencing module function, and then reach the electrostatic defending effect.

The above-mentioned point discharge of mentioning be dwindle when metal surface area, when radius-of-curvature is dwindled, easily assemble electron ion, make it become high energy of a charge pooling zone, when in case adjacent metal or electron ion are close, charged region then easy and that energy is high produces potential difference (PD) and discharges electron ion (promptly so-called discharge), and reach charge balance, this principle is used on metal (ITO) the cabling layout of LCD, metal (ITO) cabling that static (ESD) the surging electric charge on the LCD dredged, dissipate is brought burns, and then strengthens the antistatic damage capability of LCD module.

For achieving the above object, the device that the present invention adopted is to increase most advanced and sophisticated ITO layout type to strengthen dredging dissipation static on LCD display panel 1, at least include on this LCD display panel 1: a link 2, one chip (IC) bonding pad 3 that is connected with aforementioned link 2, one display 4 that is connected with aforementioned chip (IC) bonding pad 3, and a discharging structure 5 that is located on aforementioned link 2, chip (IC) bonding pad 3 and display 4 peripheries constitutes; Wherein,

Above-mentioned link 2 is made up of a plurality of pin 21, and with after the wiring thin film (not shown) is connected, external control signal can be inputed in the LCD display panel 1, the driver element (not shown) of being installed in order to chip for driving (IC) bonding pad 3;

The driver element (not shown) of a driving display 4 can be installed in this chip (IC) bonding pad 3, and this chip (IC) bonding pad 3 sees through ranks cabling 6 and is connected with viewing area 2, to export a drive display 4;

This display 4 sees through ranks cabling 6 and after aforesaid chip (IC) bonding pad 3 is connected, and after the drive of being exported by the driver element of being installed on chip (IC) bonding pad 3, can be on the display screen 41 of display 4 the show image picture;

This discharging structure 5, be to place a circle with metal wire (ITO) 7 in ranks cabling 6 peripheries, and be connected with the earth terminal 211 of link 2, this peripheral metal wire 7 is not influencing under its IC signal cabling, increase discharge metal pattern 51 with right angle square or most advanced and sophisticated block, perhaps around on the circuit, increase the salient point block of discharge.

Please consulting simultaneously shown in Fig. 1-2, the 1-3, is the local enlarged diagram for Fig. 1-1 the right and left.So when the LCD module bore electrostatic charge, this metal pattern 51 can be dredged at most advanced and sophisticated thus quickly and effectively place, avoids the module function to be subjected to electrostatic influence.That is to say that the metal tip of utilizing metal pattern 51 can assemble electric charge and discharge principle, can effectively guide high electric charge static of moment (ESD) to the cabling figure that discharges the district, and then reach electrostatic dissipation, avoid the metallic conduction circuit to burn destroying and the module function is subjected to electrostatic influence.

Again from the above, the present invention is after improving row biography defective, and the advantage that is increased is as follows:

1, need add assembly, reducing increases other effect that assembly causes.

2, simplify making flow process and complicacy.

3, to dredge dissipation electrostatic charge mode, reach the electrostatic defending effect, be different from general obstruct mode.

4, only need to increase antistatic capacity at the cabling mode of LCD, compare, reduce design and cost of manufacture with general electrostatic protection apparatus by ITO.

Further, be to increase most advanced and sophisticated ITO layout type to strengthen dredging dissipation static, except using above-mentioned method, also can be on LCD in the ITO cabling of sheet glass, the ITO line areas is divided into vague and general ITO circuit and electroconductive ITO circuit, (space) at interval arranged therebetween, and relative end points tool cone-shaped discharges in order to accumulation.

Above-mentioned is preferred embodiment of the present invention only, is not to be used for limiting scope of the invention process.Be that all equalizations of being done according to the present patent application claim change and modification, be all claim of the present invention and contain.

Claims

1. the display panel conductive metal line placement device of a tool point discharge, this LCD display panel (1) includes at least: a link (2), one chip (IC) bonding pad (3), one viewing area, externally control signal is imported the driver element of being installed on rear drive one chip (IC) bonding pad (3), seeing through ranks cabling (6) driving display (4) show image by driver element, it is characterized in that: a circle (ITO) is placed with metal wire (7) in the periphery of above-mentioned ranks cabling (6), and be connected with the earth terminal (211) of link (2), to form a discharging structure (5), make the LCD module at electric charge surging that static produced, utilize point discharge, can dissipate rapidly, avoiding the influencing module function, and then reach the electrostatic defending effect.

2. the display panel conductive metal line placement device of tool point discharge according to claim 1 is characterized in that, described peripheral metal line (7) increases the discharge metal pattern (51) with right angle square under the situation that does not influence its IC signal cabling.

3. the display panel conductive metal line placement device of tool point discharge according to claim 1 is characterized in that, described peripheral metal line (7) increases the discharge metal pattern (51) with most advanced and sophisticated block under the situation that does not influence its IC signal cabling.

4. the display panel conductive metal line placement device of tool point discharge according to claim 1 is characterized in that, described peripheral metal line (7) on the circuit, increases the salient point block of discharge around under the situation that does not influence its IC signal cabling.

5. the display panel conductive metal line placement device of tool point discharge according to claim 1, it is characterized in that, the most advanced and sophisticated ITO layout type of described increase is to strengthen dredging dissipation static, can also be on LCD in the ITO cabling of sheet glass, the ITO line areas is divided into vague and general ITO circuit and electroconductive ITO circuit, (space) at interval arranged therebetween, and relative end points tool cone-shaped discharges in order to accumulation.

6. the display panel conductive metal line layout method of a tool point discharge, it is characterized in that, adopt new ITO distribution form, with continuity ITO cabling mode (turning point circular arc, straight horizontal conductive metal wire (7) periphery are with conductive metal wire (7) frame), under the situation that does not influence LCD display frame and cabling resistance, add the metal pattern (51) of tool wedge angle, assemble and the release electric charge with guiding electrostatic charge to this district, when the LCD module bears electrostatic charge, can dredge at most advanced and sophisticated thus quickly and effectively place, avoid the module function to be subjected to electrostatic influence.