CN202013461U

CN202013461U - Structure capable of improving electro-static discharge (ESD) performance of display screen of mobile phone

Info

Publication number: CN202013461U
Application number: CN2011201333691U
Authority: CN
Inventors: 曾元清
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2011-04-29
Filing date: 2011-04-29
Publication date: 2011-10-19
Anticipated expiration: 2021-04-29

Abstract

The utility model discloses a structure capable of improving an electro-static discharge (ESD) performance of a display screen of a mobile phone, which comprises an upper-layer Polaroid, an upper-layer glass substrate, a liquid crystal layer, a lower-layer glass substrate and the like which are sequentially arranged from the top to the bottom. A layer of conductive film or a layer of conductive adhesive coating is arranged between the upper-layer Polaroid and the upper-layer glass substrate. The conductive film is an indium tin oxides (ITO) film, and the conductive film is connected with a ground (GND) terminal of the lower-layer glass substrate through a conductive silver paste coating or other conductive materials on the left side and the right side of the conductive film. The conductive silver paste coating is in a shape of a cuboid, a cylinder, a stair-shaped oval cylinder or a stair-shaped cuboid. The conductive silver paste coating or the other conductive materials are adjustable in widths, thickness and shapes so as to adapt to different-level anti-static capabilities. The structure improves the ESD performance of the display screen of the mobile phone to some extent and is simple in structure and easy to realize.

Description

A kind of structure of improving mobile phone display screen ESD performance

Technical field

The utility model relates to a kind of mobile phone display screen structure, particularly relates to a kind of structure of improving mobile phone display screen ESD performance.

Background technology

In the prior art, international, home brands mobile phone is to the abbreviation of the English Electro-Static discharge of electrostatic prevention ESD() certain requirement is all arranged, with regard to static itself, it has some characteristics: one, disguise, human body is perception static directly; Two, the performance that potentiality, some electronic devices and components are subjected to behind the electrostatic damage does not significantly descend, but the discharge meeting that repeatedly adds up causes internal injury and forms hidden danger to device; Three, randomness, after an element generation, until before its damage, all processes all are subjected to the threat of static, and the generation of these static also has randomness; Four, complicacy, the failure analysis work of electrostatic discharge damage, time-consuming, bothersome, expensive because of the essence of electronic product, thin, small design feature, the technology of having relatively high expectations also often needs to use highly sophisticated device such as scanning electron microscope.Even so, the damage that some electrostatic damage phenomenon also is difficult to cause with other reasons is distinguished, and people's mistake was lost efficacy electrostatic damage be used as other inefficacies.This usually owing to initial failure or inefficacy in confused situation, thereby had covered the true cause that lost efficacy unconsciously before damage of electrostatic discharge is not fully realized, so static is extremely complicated to the electron device infringement.Prevent that static is except aborning, adopt various antistatic countermeasure, usually the certain methods of taking in concrete place of improving electrostatic capacity is as the abbreviation with the English Branch Target of BTB(Buffer) abbreviation of wrapping insulating gel, the English Flexible Printed of main FPC(Circuit) increase and reveal copper ground connection etc., though can have some improvement, but consistance is bad, can cause the electrostatic ring of certain probability.

The utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of structure of improving mobile phone display screen ESD performance is provided, and can effectively improve anti-static ability, and simple in structure, is easy to install.

In order to achieve the above object, the technical solution adopted in the utility model is: a kind of structure of improving mobile phone display screen ESD performance, this structure comprises the upper strata polaroid from top to bottom successively, the upper strata glass substrate, liquid crystal layer and lower floor's glass substrate, between upper strata polaroid and upper strata glass substrate, be provided with layer of conductive film, this conductive film is ITO (abbreviation of English Indium Tin Oxides) film or a conducting resinl coating, and by conductive film being connected with the GND of lower floor glass substrate at the left and right sides point conductive silver paste coating of conductive film or other conductive material, conductive silver paste coating is rectangular parallelepiped, right cylinder, ladder elliptical cylinder body or ladder rectangular parallelepiped, the width of conductive silver paste coating, thickness and shape can be adjusted, wide visual angle display screen based on plane internal switch IPS technology, the maximum difference of it and general T FT display screen is the abbreviation of the English Voltage Common of VCOM() to be positioned at one deck be the lower glass substrate upper surface for public electrode and thin film transistor (TFT) TFT, be public electrode and tft layer, be arranged on the upper surface of lower floor's glass substrate.

One side of lower floor's glass substrate is provided with the display panel chip for driving, the display screen panel chip for driving links to each other with external flexible PCB FPC, flexible PCB is provided with the ESD device area, the ESD device area comprises electric capacity and resistance, also is provided with the abbreviation of the English Board To of BtoB(Board at the long and narrow end of FPC) CONN link interface.

Compared with prior art, the beneficial effects of the utility model are: the first, by at the left and right sides point conductive silver paste coating of conductive film or use other conductive material that conductive film is connected with the GND of lower floor glass substrate, by about corresponding 2 shift the energy of a charge that static produces, and the width of conductive silver paste coating, thickness and shape can be adjusted, and have improved the ESD anti-static ability of mobile phone display screen to a certain extent; The second, this structural design is simple, is easy to realize.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a Facad structure synoptic diagram of the present utility model;

Fig. 3 is a conductive silver paste coating position view of the present utility model;

Fig. 4 is the side view of conductive silver paste coating.

Embodiment

Purport of the present utility model is to overcome the deficiencies in the prior art, a kind of structure of improving mobile phone display screen ESD performance is provided, between upper strata polaroid and upper strata glass substrate, be provided with conductive film, public electrode VCOM and thin film transistor (TFT) TFT are positioned at same one deck, be arranged on the upper surface of lower floor's glass substrate, improved the ESD anti-static ability of mobile phone display screen to a certain extent, and this structural design is simple, is easy to realize.

Mobile phone display screen is bigger as the probability that mobile phone display device contacts with human body, so the display screen electrostatic problem is commonplace, particularly the slip lid machine.Two blocks of metals of the slide rail of slip lid machine and horizontal coupling plate form electric capacity, and when slide rail was discharged, LCD display was among the electric field, antistatic effect are required just more harsh this moment so.In addition, slide rail for the slip lid machine, the metal finishing sheet at the metal battery lid and the back side all is the exposed metal that directly or indirectly links to each other with inner PCB master ground, no matter be contact discharge or atmospherical discharges, the ESD energy can both be injected into by these metals on the equivalent capacity of upper strata ITO and the formation of plane coupling plate easilier.Especially-during the 12kV atmospherical discharges, negative charge is to this equivalent capacity charging, and be accumulated in the lower surface of metal frame and ito thin film.

Wide visual angle display screen based on plane internal switch IPS technology, the maximum difference of it and general T FT display screen is that it is the lower glass substrate upper surface that VCOM public electrode and thin film transistor (TFT) TFT are positioned at one deck, and the public electrode of general T FT display screen is positioned on the top glass substrate of liquid crystal molecule.For solve produce with use in electrostatic problem, the IPS display screen can plate one deck ito thin film at the upper glass upper surface, and this layer ito thin film can link to each other with lower floor glass ground by certain earthing mode.

Be elaborated with reference to accompanying drawing below in conjunction with embodiment, so that technical characterictic of the present utility model and advantage are carried out more deep annotation.

As shown in Figure 1, 2, a kind of structure of improving mobile phone display screen ESD performance, this structure comprises upper strata polaroid 1, upper strata glass substrate 2, liquid crystal layer 3 and lower floor's glass substrate 4 from top to bottom successively, between upper strata polaroid 1 and upper strata glass substrate 2, be provided with layer of conductive film 5, this conductive film 5 is ito thin film or conducting resinl coating, and by the GND of conductive film 5 with lower floor glass substrate 4 being connected at the left and right sides point conductive silver paste coating 11 of conductive film 5, thereby realize the multipath of electrostatic transfer, reduce the bad probability of screen that causes because of electrostatic problem.

Shown in Fig. 3,4, conductive silver paste coating 11 is rectangular parallelepiped, and conductive silver paste coating 11 is rectangular parallelepiped not only, perhaps is right cylinder, ladder elliptical cylinder body or ladder rectangular parallelepiped.The width of conductive silver paste coating 11, thickness and shape can be adjusted, and conductive silver paste coating 11 used conductive silver pastes also can replace with other conductive materials.

One side of lower floor's glass substrate 4 is provided with display panel chip for driving 7, display screen panel chip for driving 7 links to each other with external flexible PCB 10, flexible PCB 10 is provided with ESD device area 8, ESD device area 8 comprises electric capacity and resistance, also is provided with BtoB CONN database link interface 9 at the long and narrow end of flexible PCB 10.

The above only is preferred embodiment of the present utility model, but the utility model is not limited only to described embodiment, and all equalizations of doing according to the utility model change and modify that to reach same effect be contingent and all be included among the utility model.

Claims

1. structure of improving mobile phone display screen ESD performance, this structure comprises upper strata polaroid (1), upper strata glass substrate (2), liquid crystal layer (3) and lower floor's glass substrate (4) from top to bottom successively, it is characterized in that: described structure also comprises the conductive film (5) that is arranged between upper strata polaroid (1) and the upper strata glass substrate (2).

2. the structure of improving mobile phone display screen ESD performance according to claim 1 is characterized in that: described conductive film (5) is ito thin film or conducting resinl coating.

3. the structure of improving mobile phone display screen ESD performance according to claim 2 is characterized in that: described conductive film (5) is connected by the left and right sides point conductive silver paste coating (11) at conductive film (5) with the earth terminal GND of lower floor's glass substrate (4).

4. the structure of improving mobile phone display screen ESD performance according to claim 3 is characterized in that: described conductive silver paste coating (11) is rectangular parallelepiped, right cylinder, ladder elliptical cylinder body or ladder rectangular parallelepiped.