CN202003942U

CN202003942U - Plasma display module with combined-type electromagnetic shielding structure

Info

Publication number: CN202003942U
Application number: CN201020686009XU
Authority: CN
Inventors: 赵良辰
Original assignee: Sichuan COC Display Devices Co Ltd
Current assignee: Sichuan COC Display Devices Co Ltd
Priority date: 2010-12-29
Filing date: 2010-12-29
Publication date: 2011-10-05
Anticipated expiration: 2020-12-29

Abstract

The utility model relates to a plasma display module, in particular to a plasma display module with a combined-type electromagnetic shielding structure, and aims to solve the problems that when a traditional plasma display module is applied to a plasma television, cost increase, bulky appearance and difficulty in assembly are caused because the plasma television has to adopt a complicated shielding structural design. The utility model provides an electromagnetic shielding structural design capable of greatly simplifying a plasma module. The plasma display module comprises a display screen, an adhesive tape, a drive circuit board, a flexible circuit board and a back panel, wherein the display screen consists of an upper glass substrate and a lower glass substrate and is connected with the back panel through the adhesive tape; the drive circuit board is fixed on the back panel; a through hole is formed on the back panel; the flexible circuit board is connected with the upper glass substrate through the through hole in the back panel; and the back panel and a television metal rear cover form an enclosed cavity. The plasma display module is applied to the design of plasma modules.

Description

A kind of plasma that contains the combined electrical magnet shielding structure shows module

Technical field

The utility model relates to a kind of plasma and shows module, and the plasma that particularly relates to a kind of combined electrical magnet shielding structure shows module.

Background technology

Plasma shows that module is to utilize plasma to inspire ultraviolet ray under certain voltage, shine the display device that fluorescent material sends visible light again, this demonstration module contrast height, response time is short, show that dynamic image is effective, also thought the first-selected display device of large-screen domestic TV by the professional person.

As shown in Figure 1, display screen 10, adhesive tape 20, the backboard 30 that traditional plasma demonstration module mainly is made up of top glass substrate 11 and lower glass substrate 12, a plurality of drive circuit boards 40 that drive display screen generation image constitute, display screen 10 pastes backboard 30 by adhesive tape 20, and drive circuit board 40 is fixed on the backboard 30.In display screen 10, inert gas is sealed between top glass substrate 11 and the lower glass substrate 12, and the back that is stimulated produces ultraviolet ray, and ultraviolet ray excited fluorescent material sends visible light, obtains image thus.Like this, in order to produce image, show the drive signal of using high-frequency and high-voltage in the module at plasma, can make display screen 10 produce a large amount of heat and noise, compare liquid crystal module and CRT TV simultaneously, display screen 10 and drive circuit board 40 can be emitted more electromagnetic wave.

Be illustrated in figure 2 as the shielding construction sectional view that traditional plasma module is applied to the plasma electric apparent time, need plasm TV to have complicated structure and realize function of shielding.The tradition plasm TV must be made up of with transparent shielding material 50 plasma module, metal back cover 70, and transparent shielding material 50 is formed the cavity of a sealing with metal back cover 70, thereby stops electromagnetic leakage.The shortcoming of the shielding construction of this traditional plasm TV is conspicuous: the cost of transparent shielding material 50 is very high, and transparent shielding material 50 with 70 be connected the complicated structure of needs; But owing to be limited by the structural design of traditional plasma module, and have to adopt this mode.

More than be that traditional plasma shows module, traditional plasma shows module self without any electro-magnetic screen function, needs plasm TV producer to carry out secondary development and realizes shielding to display screen 10 and drive circuit board 40.

For traditional plasma is shown that module carries out electromagnetic shielding, the structural design that plasma electric is optionally complicated causes cost to increase, and profile is too fat to move, the assembling difficulty.

Along with development of technology, the power consumption of display screen 10 is more and more lower, thereby the electromagnetic wave of its radiation also significantly reduces, therefore the radiation source of plasma module mainly concentrates on the drive circuit board 40, so just can only carry out electromagnetic shielding to drive circuit board 40, thereby simplify the shielding construction design, this just needs a kind of brand-new plasma module of design.

The utility model content

The technical solution adopted in the utility model is in order to address the above problem, provide a kind of plasma of combined electrical magnet shielding structure to show module, make the plasma module self have electromagnetic armouring structure, thereby can simplify the R﹠D cycle of manufacturer terminal, make the plasma module have better generality, and certain reduction noise function is arranged.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of plasma that contains the combined electrical magnet shielding structure shows module, comprise display screen 10, adhesive tape 20, drive circuit board 40, flexible PCB 60 that top glass substrate 11 and lower glass substrate 12 are formed, backboard 100, described display screen 10 is connected with described backboard 100 by described adhesive tape 20, described drive circuit board 40 is fixed in described backboard 100, described backboard 100 is provided with via hole 80, described flexible PCB 60 is connected with described top glass substrate 11 by described via hole 80, and described backboard 100 constitutes closed cavity with television set metal back cover 70.

Described plasma shows that module also comprises pressing strip device 200, and described pressing strip device 200 is connected with described backboard 100 both sides, and described flexible PCB 60 is positioned at described pressing strip device 200 inboards, closely contacts with described pressing strip device 200.

Described backboard 100 is provided with square hole 140, first perforate 130, and described press strip is provided with second perforate 240, and described second perforate 240 is passed described square hole 140 and is connected with described first perforate, 130 screws.

Described backboard 100 4 limits also comprise panel beating crimp 110 respectively, and panel beating crimp 110 is connected with plasma TV bonnet 70.

Described pressing strip device 200 comprises press strip 210, flexible damping material 220, and described flexible vibration-absorptive material 220 sticks on the described press strip 210, and described flexible vibration-absorptive material (220) is positioned at described press strip 210 inboards; Described flexible PCB 60 is positioned at flexible damping material 220 inboards.

Described press strip 210 is that electric conducting material or outer surface are covered with electric conducting material.

From above-mentioned architectural feature of the present utility model as can be seen, its advantage is:

Use the plasm TV of the utility model plasma module and can cancel transparent shielding material 50, and backboard 100 forms the cavity that seals with plasm TV metal back cover 70, make backboard 100 and show the fixing circuit board and thermolysis of module except having traditional plasma, also has electro-magnetic screen function, in order better to prevent module both sides FPC(flexible PCB) locate electromagnetic leakage, detachable press strip (having shielding action) is installed in the backboard both sides.The plasm TV of using the utility model plasma module can significantly reduce cost, and simplifies shielding construction, and the utility model plasma module is that the plasm TV cost reduces, the basis of designs simplification.

Description of drawings

The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:

Fig. 1 is that traditional plasma shows the module schematic diagram;

Fig. 2 is an isoionic TV sectional view of using traditional plasma module;

Fig. 3 is that the utility model plasma shows that module is applied to the sectional view of plasm TV;

Fig. 4 (a) is a kind of connected mode of the utility model backboard and press strip;

Fig. 4 (b) is a kind of frame mode that the utility model backboard cooperates with the TV bonnet;

Fig. 5 is a kind of version of the utility model press strip.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

Embodiment:

The utility model plasma shows the sectional view after module is applied to plasm TV as shown in Figure 3.Display screen 10, adhesive tape 20, drive circuit board 40, flexible PCB 60, the metal back cover 70 that top glass substrate 11 and lower glass substrate 12 are formed is same as display screen 10, adhesive tape 20, drive circuit board 40, the flexible PCB 60 of traditional plasma module, the metal back cover 70 of plasm TV respectively; Backboard 100 is on the prior art basis, also comprise a syndeton that is easy to dismantle as described in Fig. 4 (a) so that pressing strip device 200 install, in addition backboard 100 is provided with via hole 80, flexible PCB 60 is connected with top glass substrate 11 by the via hole 80 of backboard 100, and backboard 100 constitutes closed cavity with television set metal back cover 70; Press strip 200 is in order to reduce the shielding construction of module both sides electromagnetic-wave leakage, press strip 200 comprises for flexible damping material 220 that reduces noise and press strip 210, wherein press strip has the effect of electromagnetic shielding, and damping material 220 is closely to contact with flexible PCB 60, make the vibration of flexible PCB 60 to be cushioned by damping material 220, and the electromagnetic wave that flexible PCB 60 sends can be reflected by press strip 210, prior art dorsulum 100 designs as the ground of whole plasma module, and press strip 210 is that conduction is connected with backboard 100, therefore the electromagnetic wave of flexible PCB 60 can be conducted to backboard 100 by press strip 210 reflections, so to the circuit " " absorb.Display screen 10 is connected with backboard 100 by adhesive tape 20, and drive circuit board 40 is fixed on the backboard 100; Flexible PCB 60 is connected with top glass substrate 11 by the via hole of backboard 100, and backboard 100 constitutes closed cavity with television set metal back cover 70, and pressing strip device 200 is connected with described backboard 100 both sides.

Fig. 4 (a) is a kind of connected mode of the utility model backboard and press strip, and backboard 100 both sides and pressing strip device 200 are connected.Backboard 100 is provided with first square hole 140, so that corresponding structure is passed square hole 140 and is threaded with first perforate 130 on the press strip 210, so both reached being connected of press strip 200 and backboard 100, can not influence the cooperation of backboard 100 and different plasm TV bonnets 70 again, thereby can improve the versatility and the compatibility of plasma module.Shown in Fig. 4 (b), this backboard 100 is in order to realize electro-magnetic screen function, need a panel beating crimp 110 that matches with plasm TV bonnet 70 respectively on four limits of backboard 100, through relevant EMC verification experimental verification, panel beating crimp 110 has the requirement on the certain size, in order to take into account moulding and shield effectiveness, the width of this two panel beatings crimp is not less than 10mm, and the reasonable value of economy and performance is 10mm.

Fig. 5 is a kind of version of the utility model press strip.Described press strip 210 is pasted with described flexible vibration-absorptive material 220 and is connected, and is positioned at described press strip 210 inboards; Flexible PCB 60 is positioned at flexible vibration-absorptive material 220 inboards.Press strip 210 is provided with the square hole 140 that backboard 100 is passed in second perforate, 240, the second perforates 240, connects with first perforate, 130 screws that are connected backboard 100; Press strip 210 adopts electric conducting materials or its outside material that is conduction at least; Design has EMI contact 230 on this press strip 210, and these EMI contact 230 increases contact with plasm TV bonnet 70; In order to reduce noise, be pasted with flexible damping material 220 on the press strip 210.This press strip can have different schemes according to the specific constructive form of plasma module.

In this plasma module shielding scheme, backboard 100 is essential, and pressing strip device 200 is optional, along with development of technology, if the radiation of flexible PCB 60 further reduces, just can cancel pressing strip device 200 and just improve the versatility of backboard 100 like this, thereby can reduce cost.Design versatility and compatibility also can be provided for plasm TV producer.

Disclosed all features in this specification except mutually exclusive feature, all can make up by any way.

Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.

Claims

1. a plasma that contains the combined electrical magnet shielding structure shows module, comprise the display screen (10) that top glass substrate (11) and lower glass substrate (12) are formed, adhesive tape (20), drive circuit board (40), flexible PCB (60), backboard (100), described display screen (10) is connected with described backboard (100) by described adhesive tape (20), described drive circuit board (40) is fixed in described backboard (100), it is characterized in that described backboard (100) is provided with via hole (80), described flexible PCB (60) is connected with described top glass substrate (11) by described via hole (80), and described backboard (100) constitutes closed cavity with television set metal back cover (70).

2. a kind of plasma that contains the combined electrical magnet shielding structure according to claim 1 shows module, it is characterized in that described plasma shows that module also comprises pressing strip device (200), described pressing strip device (200) is connected with described backboard (100) both sides, described flexible PCB (60) is positioned at described pressing strip device (200) inboard, closely contacts with described pressing strip device (200).

3. a kind of plasma that contains the combined electrical magnet shielding structure according to claim 1 shows module, it is characterized in that described backboard (100) is provided with square hole (140), first perforate (130), described press strip (210) is provided with second perforate (240), and described second perforate (240) is passed described square hole (140) and is connected with described first perforate (130) screw.

4. a kind of plasma that contains the combined electrical magnet shielding structure according to claim 1 shows module, it is characterized in that described backboard (100) four limits also comprise panel beating crimp (110) respectively, panel beating crimp (110) is connected with plasma TV bonnet (70).

5. a kind of plasma that contains the combined electrical magnet shielding structure according to claim 2 shows module, it is characterized in that described pressing strip device (200) comprises press strip (210), flexible damping material (220), described flexible damping material (220) sticks on the described press strip (210), and described flexible damping material (220) is positioned at described press strip (210) inboard; Described flexible PCB (60) is positioned at flexible damping material (220) inboard.

6. a kind of plasma that contains the combined electrical magnet shielding structure according to claim 4 shows module, it is characterized in that described press strip (210) is that electric conducting material or outer surface are covered with electric conducting material.