CN201348689Y

CN201348689Y - LCD liquid crystal display

Info

Publication number: CN201348689Y
Application number: CNU2008202350226U
Authority: CN
Inventors: 吕廷训; 袁明; 肖露
Original assignee: HKC ELECTRONIC (SHENZHEN) CO Ltd
Current assignee: HKC ELECTRONIC (SHENZHEN) CO Ltd
Priority date: 2008-12-12
Filing date: 2008-12-12
Publication date: 2009-11-18
Anticipated expiration: 2018-12-12

Abstract

The utility model relates to the field of liquid crystal display, in particular to a liquid crystal display with inner improved shielding structure, wherein a display mainboard is fixed in a shielding shell which is formed by an upper cover plate, a lower cover plate and a baffle plate, wherein a power panel is fixed on the outside of the shielding shell, thus the display mainboard and the power panel are completely separated and screened and can not be mutually disturbed by electrical signals, moreover, between the upper cover board and the lower cover board, a positioning connection strap is arranged on the other side through adapted filling-in bit and slot so as to firmly fix the upper and lower cover plates together, and the positioning connection strap and the upper and lower cover plates are connected through a positioning projection. The shielding shell of the utility model has simple and compact structure with less consumable materials and convenient disassembly and maintenance, the entire thickness and weight are further reduced, thereby being beneficial for enhancing the reliability.

Description

The LCD LCD

[technical field]

The utility model relates to LCD LCD (Liquid Crystal Display) field, specifically refers to the structure improved LCD LCD of a kind of internal shield.。

[background technology]

Electronic technology development at present suitable rapidly, LCD because have that volume is little, in light weight, driving voltage is low, portable, advantage such as do not take up space, become the display device of portable terminal system gradually, especially it has low diathermaneity, characteristics such as compact, becomes indispensable electrical appliance in the modern life.

Conventional liquid crystal comprises and shows mainboard, frame, backlight and carry on the back cover plate four parts formation.General demonstration mainboard is integrated in crystal liquid substrate, signal drive circuit plate and flexible circuit on the mainboard, as shown in Figure 1, show mainboard 20 ' be set at by the big iron plate 10 in back ' with the metal shell 50 ' accommodation space of radome 40 ' constitute in, with show mainboard 20 ' be housed in metal shell 50 ' interior also have power panel 30 ', this needs the enough great talents of accommodation space passable undoubtedly, this certainly will with increase metal shell 50 ' volume, metal shell 50 ' by a plurality of screw retention; And because LCD has certain radiation, so its Circuits System is had certain Conduction Interference and space radiation, this just requires good ground connection and shield effectiveness, though this structure can guarantee ground connection and shielding, but volume is bigger, need with demonstrations mainboard 20 ' and power panel 30 ' shielding completely get up, this just requires on the trim designs comparatively complexity, with metal material also many, be unfavorable for reducing cost; Demonstration mainboard 20 ' and power panel 30 ' be set together, be inconvenient to dismantle maintenance, and further increased thickness and the weight of LCD, moreover Conduction Interference is also arranged each other, be unfavorable for the raising of reliability.A kind of volume of market demand is little, and compact conformation has the LCD of good shielding.

[utility model content]

The purpose of this utility model be to solve available liquid crystal display volume big, be unfavorable for the problem dismantling the maintenance and do not possess good conductive energy and interference shielding effect, and a kind of structure improved LCD LCD of internal shield that has is proposed.

The utility model LCD LCD comprises the demonstration mainboard that is contained in the shield shell receiving space, is arranged on the outer power panel of shield shell, and described shield shell is made of upper cover plate, lower cover and plate washer; Wherein upper cover plate is connected with lower cover and becomes to have a uncovered box body, upper cover plate one side is provided with inserted sheet, this inserted sheet is connected with the slot adapted that plate washer is provided with, plate washer is provided with and will shows that mainboard is fastened on the locator protrusions in the shield shell receiving space, and plate washer is provided with and is supporting demonstration mainboard locating slot.

Preferably, a side of upper cover plate and lower cover is provided with the relative sheet that is located by connecting.

Preferably, the described plate washer L-shaped shape of direction from the side.

Preferably, described power panel is fixed by Location resilient piece.

Preferably, described Location resilient piece is provided with connecting hole.

The utility model LCD LCD, to show that mainboard is fixed on by upper cover plate, in the shield shell that lower cover and plate washer constitute, power panel is fixed on the shield shell outside, show that like this mainboard separates shielding completely with power panel, can not be subjected to the interference of its electric signal each other, and the adapted by inserted sheet and slot between upper cover plate and the lower cover, its opposite side is provided with the sheet that is located by connecting, with upper cover plate and firm the linking together of lower cover, at locator protrusions the three is connected by plate washer, its shield shell is simple in structure, compact, the material that is consumed is also comparatively few, is easy to remove and repair, and further reduces integral thickness and the weight of LCD, moreover Conduction Interference is also arranged each other, help the raising of reliability.

[description of drawings]

Fig. 1 discloses the schematic perspective view of the shielding construction of LCD for the utility model prior art;

Fig. 2 is the inner structure synoptic diagram of the utility model LCD;

Fig. 3 is a shielding construction structural representation of the present utility model;

Fig. 4 is a shielding construction assembling synoptic diagram of the present utility model.

[embodiment]

Below in conjunction with accompanying drawing, the utility model is done detailed explanation:

The utility model LCD LCD, as shown in Figure 2, the inboard of display frame 100 is equiped with shield shell 50, also is provided with supply socket 70, power panel 30, Location resilient piece 60a and Location resilient piece 60b at the side of shield shell 50.Supply socket 70 is installed in the outside of shield shell 50, isolates with the shield shell 50 inner electrical components that load.In conjunction with shown in Fig. 3,4, show mainboard 20 in the installing of the inside of shield shell 50, show that mainboard 20 is high-frequency circuits, the space radiation of its generation is disturbed very big, must shield fully just by five metals and can reach requirement, therefore form the conductor space of sealing by upper cover plate 51, lower cover 52 and plate washer 53 threes, will show that mainboard 20 shields fully, show that like this mainboard 20 radiation to external world and its interference of outer bound pair just drop to minimum.But from the lead that shows that mainboard 20 is drawn, comprise the line that is connected to display screen, be connected to the connecting line of power panel 30, be connected to the keypad line and the horn wire meeting extension radiation that is connected to loudspeaker of keypad, need further reduce radiation interference by adding modes such as shielding line and magnet ring in the wire rod outside.

See shown in Figure 4ly, be shielding construction assembling synoptic diagram of the present utility model, described shield shell 50 is made of upper cover plate 51, lower cover 52 and plate washer 53; Wherein upper cover plate 51 is connected with lower cover 52 and becomes to have a uncovered box body, upper cover plate 51 1 sides are provided with inserted sheet 512, this inserted sheet 512 is connected with slot 532 adapteds that plate washer 53 is provided with, slot 532 is supporting upper cover plate 51, and a side of upper cover plate 51 and lower cover 52 is provided with the relative sheet 511,521 that is located by connecting, and the sheet 511,521 that is located by connecting can be fixed together upper cover plate 51, lower cover 52 and plate washer 53 by screw forms simple in structure, firm shield shell 50.Plate washer 53 is provided with and will shows that mainboard 20 is fastened on the locator protrusions 534 in shield shell 50 receiving spaces, described plate washer 53 is the L-shaped shape of direction from the side, this locator protrusions 534 will show that by screw the sidepiece that mainboard 20 abuts against plate washer 53 fixes, the bottom that shows mainboard 20 is located in the locating slot 531 that is fixed on plate washer, like this, upper cover plate 51, lower cover 52 plate washers 53, and show that mainboard 20 is fixed into a firm integral body.It is also passable that certain plate washer 53 is flat shape.Also be provided with the locating slot 533 that supply socket 70 is installed on the plate washer 53, on described plate washer, be provided with ground wire screw position, locating slot 533 adjacent ground wire screw positions 535.Described power panel 30 is fixed on display interior by Location resilient piece 60a, the 60b of both sides, also has been provided with connecting hole 61a, the 61b of connection effect on the Location resilient piece.Because having added a lot of circuit on the circuit design of power panel 30 suppresses radiation and interference, therefore structurally only need allow power panel 30 good ground connection get final product, do not need to shield completely, can bring another benefit thus is exactly that power panel 30 heat radiations are better, and this has just ensured the reliability of components and parts on the power panel 30.

Power panel 30 on the plastics pillar of display interior back cover, is wherein fixed upward Location

resilient piece

60a, 60b for 2 by 4 screw retention simultaneously, and when screen was loaded onto, power panel 30 was just by Location

resilient piece

60a, 60b and screen five metals excellent contact behind; At last, put a conducting foam on the five metals upper cover plate 51 of shield shell 50, after screen was loaded onto, just with five metals upper cover plate 50 and plate washer 53 conducting ground connection, power panel 30 was also just finished good earth by the five metals shell fragment.Employed screw reduced when the utility model made assembling, speed when so just having improved assembling, make the production capacity of integral product be improved, and because cost has also been saved in the minimizing of five metals consumption greatly, also ensured the electric property of display, guaranteed that the internal electrical component is not subjected to the influence of outside electromagnetic interference.Through experimental verification, as long as power panel 30 has good ground connection just the radiation that exceeds standard can not arranged to external world, get final product so only mainboard need be shielded fully, and the mainboard volume is less, so just saved the five metals materials greatly.

The above only is a better embodiment of the present utility model; protection domain of the present utility model does not exceed with above-mentioned embodiment; as long as the equivalence that those of ordinary skills do according to the utility model institute disclosure is modified or changed, all should include in the protection domain of putting down in writing in claims.

Claims

1, a kind of LCD LCD comprises the demonstration mainboard that is contained in the shield shell receiving space, is arranged on the outer power panel of shield shell, and it is characterized in that: described shield shell is made of upper cover plate, lower cover and plate washer; Wherein upper cover plate is connected with lower cover and becomes to have a uncovered box body, upper cover plate one side is provided with inserted sheet, this inserted sheet is connected with the slot adapted that plate washer is provided with, plate washer is provided with and will shows that mainboard is fastened on the locator protrusions in the shield shell receiving space, and plate washer is provided with and is supporting demonstration mainboard locating slot.

2, LCD LCD according to claim 1 is characterized in that: a side of upper cover plate and lower cover is provided with the relative sheet that is located by connecting.

3, LCD LCD according to claim 1 is characterized in that: described plate washer is the L-shaped shape of direction from the side.

4, LCD LCD according to claim 1, it is characterized in that: described power panel is fixed by Location resilient piece.

5, LCD LCD according to claim 4, it is characterized in that: described Location resilient piece is provided with connecting hole.