CN2724039Y

CN2724039Y - Liquid crystal display module

Info

Publication number: CN2724039Y
Application number: CN 200420091214
Authority: CN
Inventors: 罗启文; 林明传; 薛玮雯; 蔡育仁
Original assignee: Wintek Corp
Current assignee: Wintek Corp
Priority date: 2004-09-02
Filing date: 2004-09-02
Publication date: 2005-09-07
Anticipated expiration: 2014-09-02

Abstract

A liquid crystal display module of the utility model comprises an LCD, a driving IC and a soft etched circuit card; wherein, the LCD comprises a base plate and a patterned indium tin oxides film arranged on the base plate, and the indium tin oxides film comprises a plurality of connecting pins; the soft etched circuit card comprises a first protective layer, an upper conductive layer, a second protective layer, a lower conductive layer and an insulating layer, the upper conductive layer is clamped between the first protective layer and the second protective layer to guarantee the situation of circuit fracture does not happen by protecting the upper conductive layer when the soft etched circuit card is folded back, the lower conductive layer is communicated with the upper conductive layer via a plurality of through holes, the conductor exposing part of the lower conductive layer is communicated with the connecting pins of the indium tin oxides film, and the insulating layer can avoid the circuit broken condition which is brought by the direct overlapping of the lower conductive layer and the patterned indium tin oxides film.

Description

The liquid crystal display module

Technical field

The utility model is and liquid crystal display module (Liquid Crystal Module, LCM) relevant, more detailed be meant a kind of soft printed circuit board (FlexiblePrint Circuit that improves in the liquid crystal display module, FPC) with LCD (Liquid Crystal Display, marriage relation LCD).

Background technology

See also Fig. 1, existing liquid crystal display module 1 shown in Figure 2, it includes unit such as a LCD 2, a drive IC 3 (Integrated Circuit) and a soft printed circuit board 4, and this LCD 2 has indium oxide tin film 2b (the Indium Tin that a glass substrate 2a and is located on this substrate 2a surface and is patterning.Xide film; ITO film); this indium oxide tin film 2b has most pin 2c and is positioned near substrate 2a edge; this drive IC 3 is installed in this substrate 2a and goes up and electrically connect with this indium oxide tin film 2b; and this soft printed circuit board 4 has one by most copper conductors conductive layer 4a that constitutes and the protective seam 4b (4c) that is located at this conductive layer 4a top, bottom surface; as shown in Figure 2, the not protected layer of this conductive layer 4a 4c hide the position of establishing be and respectively this pin 2c conducting link.

More than be general liquid crystal display module 1 and respectively constitute relevant position explanation between the unit, yet in the liquid crystal display industry to product requirement day by day in the sophistication, liquid crystal display module 1 volume also has downsizing trend, as shown in Figure 2, be limited by the restriction of substrate 2a area size and indium oxide tin film 2b pattern distribution, make that respectively this pin 2c only can extend (generally being about 1.0mm) with extremely short distance, it causes the conductive layer 4a of soft printed circuit board 4 and the overlap joint area of this pin 2c respectively to diminish remote effect bond stability each other; Again, this soft printed circuit board 4 often has the needs of reflexed in response to liquid crystal display module 1 assembling demand, yet, with conductive layer 4a when respectively this pin 2c overlapping part is turned up as fixed pivot and with soft printed circuit board 4 (with reference to Fig. 3), should concentrate and generation fracture situation in the bending place stress easily by the conductive layer 4a that most copper conductor constituted, will make whole soft printed circuit board 4 lose the effect of circuit turn-ons thus.

In view of this, this case creator thinks funiculus through detailed, and long-pending research and development and the making experience of being engaged in the liquid crystal display module for many years, and generation of the present utility model is arranged eventually.

The utility model content

Fundamental purpose of the present utility model is to provide a kind of liquid crystal display module, and it impels soft printed circuit board still to keep good circuit turn-on effect under the reflexed state.

Another purpose of the present utility model is to provide a kind of liquid crystal display module, and its soft printed circuit board and LCD engagement relationship to each other is stable good.

For reaching above-mentioned purpose, a kind of liquid crystal display module provided by the utility model includes: a LCD, and have a substrate and and be located at indium oxide tin film on this substrate surface, this indium oxide tin film has most pins; One soft printed circuit board, the top, the bottom surface that have conductive layer on one and should go up conductive layer are respectively equipped with one first protective seam and one second protective seam, one lower conductiving layer be with this on conductive layer conducting ways of connecting and be located at this second protective seam bottom surface, this lower conductiving layer has a conductor exposed division, and an insulation course is located at this lower conductiving layer bottom surface; Whereby, after in conjunction with this soft printed circuit board and this LCD, this insulation course is stacked and placed on this indium oxide tin film, and the conductor exposed division of this lower conductiving layer then contacts conducting with this pin respectively.

Description of drawings

Fig. 1 is the end face synoptic diagram for the available liquid crystal video module;

Fig. 2 is the cut-open view for the available liquid crystal video module;

Fig. 3 turns up view for the soft printed circuit board of available liquid crystal video module;

Fig. 4 is the end face synoptic diagram for the utility model one preferred embodiment;

Fig. 5 is the cut-open view for the above-mentioned preferred embodiment of the utility model;

Fig. 6 is the schematic bottom view for the above-mentioned preferred embodiment of the utility model.

Embodiment

Below, enumerate preferred embodiment of the present utility model now, and cooperate following diagram to be described in more detail in the back:

See also Fig. 4 to shown in Figure 6, the liquid crystal display module 100 of the utility model one preferred embodiment is to comprise main members such as a LCD 10, a drive IC 20 and a soft printed circuit board 30: wherein:

It is that the indium oxide tin film 16 of bonding land 14, one patternings that constituted of a long and narrow zone is located on these substrate 12 surfaces that this LCD 10 has a glass substrate 12 and substrate 12 1 sides, and this indium oxide tin film 16 also has most pins 18 and is positioned at this bonding land 14.

This drive IC 20 is located on this substrate 12 and with this indium oxide tin film 16 and is electrically connected, and the function of this drive IC 20 is that the output required voltage is to pixel (pixel), so as to the degree of reversing of control liquid crystal molecule.

The structure of this soft printed circuit board 30 is conductive layer 32, one second protective seam 33, a lower conductiving layer 34 and an insulation course 35 on one first protective seam 31, from top to bottom in regular turn, wherein this first and second protective seam 31 (33) respectively on this end face of conductive layer 32 and bottom surface be provided with, has the effectiveness of protecting conductive layer 32 on this, conductive layer 32 and lower conductiving layer on this; 34 are led by most copper respectively

Line constitutes, as shown in Figure 4, the wiring path that is positioned at respectively this copper conductor on upper strata is made of a bending section 32a and a flat segments 32b, as shown in Figure 6, the wiring path that is positioned at respectively this copper conductor of lower floor extends straight, and this insulation course 35 hides fully and establishes this lower conductiving layer 34, makes lower conductiving layer 34 do not established the common conductor exposed division 34a (with reference to Fig. 5) of formation in position by screening, and it is that copper conductor with the upper strata is connected with the copper conductor conducting of lower floor that most vias 36 are arranged again.

Explanation is in addition, these soft printed circuit board 30 integral body can be distinguished into a conformable region 30A, an extension area 30B and an external district 30C (with reference to Fig. 4), this conformable region 30A generally is " T " font with extension area 30B and is connected, in this conformable region 30A, contain this lower conductiving layer 34 is arranged, insulation course 35, each via 36 and the bending section 32a that is positioned at each copper conductor on upper strata, in this extension area 30B, then only contain the flat segments 32b of each copper conductor that is positioned at the upper strata; In addition, this external district 30C extends to form from this conformable region 30A one side, this external district 30C can for not with other upper copper leads of lower floor copper conductor conducting through (with reference to Fig. 4), carry other electronic components 37 (as LED) so as to providing.

More than be the explanation of the utility model liquid crystal display module 100 each member and relevant position thereof, as shown in Figure 5, when this soft printed circuit board 30 with after this LCD 10 combines, this insulation course 35 is to be to be stacked and placed on the indium oxide tin film 16, the conductor exposed division 34a of this lower conductiving layer 34 then contacts conducting with this pin 18 respectively, so can avoid these lower conductiving layer 34 indium oxide tin film 16 overlap joints direct and patterning to cause the situation that opens circuit, this insulation course 35 and this conductor exposed division 34a provide more stable binding between soft printed circuit board 30 and this substrate 12 jointly simultaneously.

Moreover, be subjected to this first and second protective seam 31 (33) and press from both sides up and down and establish owing to should go up conductive layer 32, therefore when this soft printed circuit board 30 during, can avoid on this conductive layer 32 to guarantee the unobstructed of circuit according to this in the bending place generation situation that ruptures in reflexed.

In addition, the conformable region 30A of soft printed circuit board 30 of the present utility model is " T " font with extension area 30B and is connected, impel soft printed circuit board 30 to reduce in this connecting portion area, so when soft printed circuit board 30 can obtain to reduce reflexed stress when turning up, reduce lifting force according to this, so make soft printed circuit board 30 more easily reflexed use.

So, the utility model structure not only is suitable for the requirement of liquid crystal display module volume-diminished trend, more make soft printed circuit board under the reflexed state, still keep good circuit turn-on effect, so, the utility model has had progressive and practicality in like product, only, the above person, it only is the utility model one preferable possible embodiments, so use the equivalent structure variation that the utility model instructions and claim scope are done such as, ought to be included in the claim scope of the present utility model.

Claims

1. liquid crystal display module is characterized in that including:

One LCD has a substrate and and is located at indium oxide tin film on this substrate surface, and this indium oxide tin film has most pins;

One soft printed circuit board, the top, the bottom surface that have conductive layer on one and should go up conductive layer are respectively equipped with one first protective seam and one second protective seam, one lower conductiving layer be with this on conductive layer conducting ways of connecting and be located at this second protective seam bottom surface, this lower conductiving layer has a conductor exposed division, and an insulation course is located at this lower conductiving layer bottom surface;

Whereby, after in conjunction with this soft printed circuit board and this LCD, this insulation course is stacked and placed on this indium oxide tin film, and the conductor exposed division of this lower conductiving layer then contacts conducting with this pin respectively.

2. according to the described liquid crystal display module of claim 1, it is characterized in that: wherein, conductive layer and this lower conductiving layer are made of most copper conductor respectively on this, and most vias are that the copper conductor with the upper strata is connected with the copper conductor conducting of lower floor.

3. according to the described liquid crystal display module of claim 2, it is characterized in that: wherein, this soft printed circuit board has a conformable region and an extension area, this lower conductiving layer, this insulation course are the scopes that is arranged in this conformable region with this via respectively, and the wiring path that is positioned at respectively this copper conductor on upper strata is made of bending section and flat segments, each bending section is the scope that is arranged in this conformable region, and each flat segments then is arranged in this extension area scope.

4. according to the described liquid crystal display module of claim 3, it is characterized in that: wherein, this soft printed circuit board has more at least one external district, and this external district extends to form from this conformable region one side, this external district can for not with other upper copper leads processes of lower floor copper conductor conducting.