CN1847933A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
- Publication number
- CN1847933A CN1847933A CN 200510065926 CN200510065926A CN1847933A CN 1847933 A CN1847933 A CN 1847933A CN 200510065926 CN200510065926 CN 200510065926 CN 200510065926 A CN200510065926 A CN 200510065926A CN 1847933 A CN1847933 A CN 1847933A
- Authority
- CN
- China
- Prior art keywords
- circuit board
- shell fragment
- control circuit
- liquid crystal
- back cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Liquid Crystal (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The LCD device has one earthing structure including one back casing, one elastic earthing metal tab, one main structure and one control circuit board. The elastic earthing metal tab is set on the back casing, and both the main structure and the control circuit board are set on the back casing and contacted with the elastic earthing metal tab, so that the control circuit board is earthed through the elastic earthing metal tab and the main structure.
Description
Technical field:
The present invention is about a kind of ground structure of liquid crystal indicator.
Background technology:
Ground connection is the problem that various electronic installations must be considered.For example, generally use the electronic installation of circuit board, when operation, the electric charge that circuit board is piled up must see through ground connection and be discharged, otherwise promptly may throw into question.
Generally speaking, the ground structure that liquid crystal indicator adopted is to utilize a metal clips, and predetermined fixed is on the control circuit board of liquid crystal indicator, and metal clips is contacted with the metalwork of main structure in when assembling, control circuit board and main structure are electrically connected and the state of formation ground connection.
Fig. 1 shows an example of above-mentioned traditional ground structure, wherein metal clips 150 predetermined fixed are on control circuit board 20, main structure 10 is assembled in respectively on the back cover of liquid crystal indicator with 20 of control circuit boards, and makes metal clips 150 be contacted with main structure 10.Yet, so assembling mode must make that the spacing between main structure 10 and the control circuit board 20 is accurate, guaranteeing that metal clips 150 is good with contacting of main structure 10, so main structure 10 must be strict with the bearing accuracy of control circuit board 20, increases the assembling degree of difficulty.In addition, metal clips 150 is between control circuit board 20 and main structure 10, make metal clips 150 bump easily, thereby generation distortion, if when assembling the operator metal clips that collides or swipe because of careless manipulation, or liquid crystal indicator be need do over again the time, and metal clips 150 is in case distortion promptly may cause imperfect earth.
Summary of the invention:
In view of this, one object of the present invention promptly is to propose a kind of ground structure of liquid crystal indicator, at the yielding problem of metal clips in the ground structure of traditional liquid crystal indicator, position and assembling sequence change with metal clips, make it be difficult in assembling process, producing collision, reduce the chance that distortion takes place.
The invention discloses a kind of ground structure of liquid crystal indicator.This ground structure comprises a back cover, a grounded metal shell fragment, a main structure and a control circuit board.The grounded metal shell fragment is arranged on back cover, and main structure and control circuit board then are removably disposed in back cover respectively, and is contacted with the grounded metal shell fragment respectively, so can make control circuit board by grounded metal shell fragment and main structure ground connection.
In the ground structure of liquid crystal indicator of the present invention, the grounded metal shell fragment can be arranged to have a fixed part and two open ends, and fixed part is in order to be fixed on back cover, and the open end is then in order to be contacted with main structure and control circuit board respectively.
For above-mentioned and other purpose of the present invention, feature and advantage can be become apparent, several concrete preferred embodiments cited below particularly, and conjunction with figs. elaborates.
Description of drawings:
Fig. 1 is the synoptic diagram of the ground structure of traditional liquid crystal indicator.
Fig. 2 is the synoptic diagram of liquid crystal indicator of the present invention.
Fig. 3 is the synoptic diagram of the ground structure of liquid crystal indicator of the present invention.
Fig. 4 is the synoptic diagram of grounded metal shell fragment 60 among Fig. 3.
Symbol description:
5～fore shell
10～main structure;
12～panel;
14～circuit board;
20～control circuit board;
30～back cover;
60～grounded metal shell fragment;
62～fixed part;
64～open end;
150～metal clips.
Embodiment:
See also Fig. 2, the ground structure and the method for liquid crystal indicator of the present invention is described with an embodiment.
As shown in Figure 2, the ground structure of present embodiment comprises a back cover 30, a grounded metal shell fragment 60, a main structure 10, a control circuit board 20 and a fore shell 5.Main structure 10 comprises a panel 12 and a circuit board 14.As shown in Figure 3, grounded metal shell fragment 60 does not adopt tradition to be connected the mode of control circuit board 20 in advance, but is arranged on earlier on the back cover 30.So, main structure 10 can be separately positioned on back cover 30 with control circuit board 20, and when being fixed on back cover 30, contacts respectively at grounded metal shell fragment 60, so can make control circuit board 20 by grounded metal shell fragment 60 and main structure 10 ground connection.
Particularly, the ground structure of present embodiment at first is arranged on back cover 30 with grounded metal shell fragment 60 when assembling.Then, respectively main structure 10 and control circuit board 20 are fixed on back cover 30 in regular turn, it is contacted respectively at grounded metal shell fragment 60, so can make control circuit board 20 by grounded metal shell fragment 60 and main structure 10 ground connection.
Fig. 4 shows an embodiment of grounded metal shell fragment 60.Among Fig. 4, grounded metal shell fragment 60 has a fixed part 62 and two open ends 64.Fixed part 62 is a tabular, and in order to be fixed on back cover 30,64 of open ends are arcuation, respectively in order to contact at main structure 10 and control circuit board 20.The size and shape of fixed part 62 and open end 64 is can be according to the size of components that liquid crystal indicator adopted different and determine, is not limited to the form of Fig. 4.
Among the present invention,, and be not subject to the spacing of main structure 10 and control circuit board 20 because grounded metal shell fragment 60 is to be set directly at back cover 30, thus main structure 10 and control circuit board 20 respectively independent groups be contained in back cover 30, its bearing accuracy need be strict with.In addition, with regard to assembling sequence, after grounded metal shell fragment 60 is arranged on back cover 30 earlier, carry out the assembling of main structure 10 and control circuit board 20 again, therefore can significantly reduce the chance that grounded metal shell fragment 60 produces collision or careless collision of operator or scraping grounded metal shell fragment 60, make grounded metal shell fragment 60 not yielding, guarantee that ground connection is good.
Though the present invention discloses as above with concrete preferred embodiment; right its is not in order to qualification the present invention, any insider, without departing from the spirit and scope of the present invention; still can do a little change and retouching, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (3)
1. liquid crystal indicator comprises:
One back cover;
One grounded metal shell fragment is arranged on this back cover;
One main structure is removably disposed in this back cover, and is contacted with this grounded metal shell fragment; And
One control circuit board is removably disposed in this back cover, and is contacted with this grounded metal shell fragment, by this grounded metal shell fragment and this main structure ground connection.
2. the ground structure of liquid crystal indicator according to claim 1, wherein this grounded metal shell fragment has a fixed part and two open ends, and this fixed part is fixed on this back cover, and this open end is contacted with this main structure and this control circuit board respectively.
3. the ground structure of liquid crystal indicator according to claim 1, wherein this back cover is that insulating material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510065926XA CN100378518C (en) | 2005-04-15 | 2005-04-15 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510065926XA CN100378518C (en) | 2005-04-15 | 2005-04-15 | Liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1847933A true CN1847933A (en) | 2006-10-18 |
| CN100378518C CN100378518C (en) | 2008-04-02 |
Family
ID=37077549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510065926XA Expired - Fee Related CN100378518C (en) | 2005-04-15 | 2005-04-15 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100378518C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109716874A (en) * | 2016-09-15 | 2019-05-03 | 克诺尔商用车制动系统有限公司 | The shell contact system of control device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0757797A (en) * | 1993-08-06 | 1995-03-03 | Seiko Epson Corp | Electronic equipment |
| US5537294A (en) * | 1994-06-01 | 1996-07-16 | The Whitaker Corporation | Printed circuit card having a contact clip for grounding a printed circuit board found therein |
| JPH08293701A (en) * | 1995-04-24 | 1996-11-05 | Fujitsu Ltd | Connection structure for microwave unit |
| CN1279392C (en) * | 2003-01-09 | 2006-10-11 | 友达光电股份有限公司 | Liquid crystal display backlight module device |
| CN2618314Y (en) * | 2003-04-30 | 2004-05-26 | 嘉得隆科技股份有限公司 | Surface adhering grounded elastic sheet |
-
2005
- 2005-04-15 CN CNB200510065926XA patent/CN100378518C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109716874A (en) * | 2016-09-15 | 2019-05-03 | 克诺尔商用车制动系统有限公司 | The shell contact system of control device |
| US10912208B2 (en) | 2016-09-15 | 2021-02-02 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Housing contacting system of a control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100378518C (en) | 2008-04-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080402 Termination date: 20100415 |