CN1157935A - Liquid crystal display device - Google Patents

Abstract

The device is a liquid crystal display device in which a circuit substrate and a liquid crystal display panel are connected by elastic conductors. The liquid crystal display device also has an elastic conductor connecting the circuit substrate and the liquid crystal display panel, a bulb for irradiating light to the liquid crystal display panel, and a display area arranged between the circuit substrate and the liquid crystal display panel to guide the light from the bulb to the liquid crystal display panel. light guide plate. The light guide plate has a positioning portion that surrounds at least three surfaces of the elastic conductor to position the elastic conductor and is equal to or lower than the height of the elastic conductor when compressed. The light bulb is disposed between the elastic conductor and the display area.

Description

Liquid crystal indicator

The present invention relates to liquid crystal indicator, particularly use the liquid crystal indicator of elastic electric conductor connecting circuit substrate and LCD panel.

As background technology of the present invention, for example, the liquid crystal indicator of Figure 19 is shown.

This liquid crystal indicator is the compact display apparatus that is used for the display module of Pocket Bell and camera, and LCD panel 12, reflecting plate 14 and circuit substrate 16 are housed in metal framework 10.

And, with being located at the side irradiates light of the bulb 18 of this circuit substrate 16, by with reflecting plate 14 these light of reflection, can access backing light from the rear irradiates light of LCD panel 12 from LCD panel 12.

In addition, on the front of the reverse side of LCD panel 12 and circuit substrate 16, along being provided with splicing ear 20,22 on the limit of its length direction, connect these splicing ears 20,22 respectively with the conductive rubber 24 that is located between LCD panel 12 and the circuit substrate 16.

In this case, because reflecting plate 14 is provided on the circuit substrate 16,, make conductive rubber 24 to contact with the splicing ear 20 of circuit substrate 16 so formation otch 26 on the part is set at the conductive rubber 24 of reflecting plate 14.In addition, this otch 26 also has the positioning function when conductive rubber 24 assemblings.

In addition, because conductive rubber 24 only is provided with on circuit substrate 16 limit along its length, so conductive rubber 24 on the circuit substrate 16 be provided with the position near set bolster 28 to adjust the height of conductive rubber 24, make and when conductive rubber 24 assemblings, can evenly push.

Also have, removing the otch 26 that above-mentioned such usefulness is formed on the reflecting plate 14 carries out outside the location situation of conductive rubber 24, though not shown, also carry out and be used to assemble the localization part that conductive rubber is set on the formed products of LCD panel or making the formed products that is used for the conductive rubber location in addition.

In above-mentioned liquid crystal indicator, when using the otch 26 that is formed on the reflecting plate 14 to carry out the location of conductive rubber 24, can determine the position of conductive rubber 24 in the horizontal direction, but can not carry out the guiding of short transverse.Thereby, between LCD panel 12 and circuit substrate 16 during compression conductive rubber 24, exist conductive rubber 24 to be easy to produce the flexible deformation and the problem that is difficult to correctly locate.

Also have, when forming the localization part of conductive rubber on the box of LCD panel of packing into, must use formed products as the box body of the LCD panel of packing into, this is because if do not use formed products as box body, just can not carry out the location of conductive rubber.In addition, when making is used for the special formed products of conductive rubber location, there is the design freedom of the part that increases number of components and the increase of limiting part quantity.

In addition, in liquid crystal indicator in the past, bulb 18 is installed, on circuit substrate 16 from the side irradiates light of LCD panel 12.Thus, conductive rubber 24 can not be arranged on bulb 18 the identical side of a side is installed.This is the cause of being blocked by conductive rubber 24 fully because of the light from bulb 18.For this reason, can not at same side conductive rubber 24 be set together, and have to be provided with on the other parts of a side conductive rubber 24 is set removing bulb 18 with bulb 18.Thereby, exist the equipping position of connection terminal 20 to be restricted, and increased the problem that limits on the circuit design.

Also have, conductive rubber 24 was provided on circuit substrate 16 limit along its length in the past.Do like this, only use this conductive rubber 24 between circuit substrate 16 and LCD panel 12, not obtain uniform pressure.So, just must obtain uniform pressure by bolster 28 being set in position near conductive rubber 24, instead this bolster 28 has increased the problem of number of components with regard to existence.

The object of the present invention is to provide such liquid crystal indicator, this device is with elastic electric conductor connecting circuit substrate and LCD panel the time, do not increase number of components, can positively guide elastic electric conductor with compression direction in the horizontal direction again, and the not restriction again of circuit design aspect.

Another purpose of the present invention is to provide and can pushes the liquid crystal indicator of circuit substrate and LCD panel equably by clamping elastic electric conductor.

Thereby being to provide, a further object of the present invention can increase the liquid crystal indicator that splicing ear can effectively utilize circuit substrate and LCD panel minor face.

Liquid crystal indicator of the present invention is characterised in that:

It has:

Be printed on the circuit substrate of conductive pattern;

Have a plurality of electrode terminals that are connected with above-mentioned conductive pattern that set along many limits and the viewing area that is located at its middle body and the LCD panel of relative configuration with the foregoing circuit substrate;

Compressed configuration between foregoing circuit substrate and above-mentioned LCD panel, at least 1 elastic electric conductor that the above-mentioned conductive pattern of above-mentioned electrode terminal of a part that is set at least one limit in above-mentioned many limits on the above-mentioned LCD panel and foregoing circuit substrate is coupled together;

Bulb to above-mentioned LCD panel irradiates light;

Be located between foregoing circuit substrate and the above-mentioned LCD panel the light guide plate of the photoconduction of above-mentioned bulb to the viewing area of above-mentioned LCD panel,

Above-mentioned light guide plate has at least 3 faces surrounding above-mentioned at least 1 elastic electric conductor and at least 1 localization part of above-mentioned elastic electric conductor location, and above-mentioned localization part has the identical or low slightly height of height when compressing with above-mentioned elastic electric conductor,

Above-mentioned bulb is provided in the position between above-mentioned elastic electric conductor and the above-mentioned viewing area.

If according to the present invention, then with being formed at least three faces that localization part on the light guide plate, that the height when compressing with elastic electric conductor is identical or low slightly surrounds elastic electric conductor.Thus, do not increase number of components and positively carry out the location of the elastic electric conductor of horizontal direction, simultaneously, elastic electric conductor can be guaranteed reliable contact condition to the unnecessary flexible deformation of transverse direction in the time of can positively preventing to compress.

Also have, set bulb by the position between elastic electric conductor and viewing area, bulb and elastic electric conductor can be configured in the position of the same side, its result can set splicing ear at two sides of circuit substrate, can remove the restriction of circuit design, making freely, circuit design becomes possibility.

Among the present invention, above-mentioned bulb preferably is installed in the part of accommodating of above-mentioned light guide plate.

Thus, can be easily and positively accomplish the contraposition of bulb for light guide plate.

Also have, in the present invention, two sides that are preferably in above-mentioned light guide plate form 2 localization parts of location elastic conductor.

Thus, can push 2 elastic electric conductors that are provided between circuit substrate and the LCD panel equably.

In addition, in the present invention, above-mentioned light guide plate preferably has the coating portion that is formed on the opposed area of the above-mentioned viewing area of above-mentioned liquid crystal display substrate, be formed on the position that comprises 2 above-mentioned localization parts, have to side-prominent 2 the thick reinforcements of the above-mentioned coating portion of ratio of above-mentioned circuit substrate one.

Like this, with prominent 2 reinforcements of 2 localization parts that are formed on elastic electric conductor to circuit substrate one side, can be below light guide plate formation space and can apply flexibly the space that is provided with to this space for other parts.

Also have, in the present invention, be preferably in to form on above-mentioned reinforcement of the side and take in the recess that above-mentioned bulb is used.

Like this, on the reinforcement that is formed at the light guide plate sidepiece, form recess, can easily bulb be installed for light guide plate by bury bulb underground at this recess.

Above-mentioned recess has in the face of the opening of LCD panel one side and the bottom relative with above-mentioned opening, and above-mentioned bottom preferably has the slotting logical terminal inserting hole of terminal that is used to make above-mentioned bulb.

Thus, by inserting bulb from the opening of recess, make the terminal of bulb insert terminal inserting hole in the logical recess, can be easily and positively carry out the installation of bulb for current-carrying plate, simultaneously, can also positively carry out the location of the terminal of bulb with inserting hole for circuit substrate.

Also have, in the present invention, be preferably in the 1st reflecting element that the above-mentioned bulb light of reflection further is set between foregoing circuit substrate and the above-mentioned light guide plate,

Above-mentioned light guide plate is preferably in the fixed part that has fixing above-mentioned the 1st reflecting element on the face relative with the foregoing circuit substrate.

Like this, can the dual-purpose light guide plate as the fixture of the 1st reflecting element that is used to improve the light utilization ratio.Also can partly be located at said fixing on the above-mentioned reinforcement.

Also have, in the present invention, the 2nd reflecting element of the above-mentioned bulb light of reflection is set between above-mentioned bulb and above-mentioned elastic electric conductor at least further preferably.

Prevent to improve the brightness of bias light with the 2nd reflecting element from the sewing of the light of bulb.

Above-mentioned the 2nd reflecting element both can be to form in the coating of the side of the above-mentioned elastic electric conductor relative with above-mentioned bulb, also can be the reflection horizon that attaches on the side of the above-mentioned elastic electric conductor relative with above-mentioned bulb.

Like this, a side configuration reflecting element by at elastic electric conductor can only set elastic electric conductor and carry out the configuration of reflecting element at localization part, can omit the trouble that reflecting element is installed.

Also have, in the present invention, be preferably in the 1st, the 2nd relative limit of above-mentioned LCD panel upper edge and dispose a plurality of scan electrode terminals, and, along the 3rd limit between the 1st, the 2nd limit a plurality of signal electrode terminals are set, the above-mentioned a plurality of scan electrodes that are configured in above-mentioned the 1st, the 2nd limit are connected on the above-mentioned conductive pattern of foregoing circuit substrate with 2 elastic electric conductors.

Like this, by configuration scan electrode terminal on the 1st, the 2nd relative limit of LCD panel, configuration signal electrode terminal on the 3rd limit between the both sides can be guaranteed the electrode terminal of quantity sufficient.And, by setting elastic electric conductor, can push elastic electric conductor equably at two lateral sections.

In above-mentioned occasion, preferably also has the flexible circuit board that above-mentioned a plurality of signal electrode terminals of above-mentioned LCD panel is connected to the above-mentioned conductive pattern of foregoing circuit substrate.

Like this, by the less scan electrode terminal of number of terminals is connected with elastic electric conductor,, can carry out more reliable terminal and connect with the more signal electrode terminal of flexible circuit board link subnumber.

It is on 2 above-mentioned signal electrode terminals that dispose respectively on the position of boundary and online symmetry that above-mentioned flexible circuit board is preferably simultaneously supplied with same signal with the center line of dividing above-mentioned a plurality of signal electrode center terminals equally.

Like this, the ability of driver is that half of signal electrode number of terminals gets final product, can be with product at a low price corresponding to driver.

If according to other form of the present invention, then be characterised in that:

Have:

Be printed on the circuit substrate of conductive pattern;

Be formed and have pair of short edges and a pair of long limit and roughly rectangular and have a plurality of electrode terminals that are connected with above-mentioned conductive pattern portions that set along above-mentioned pair of short edges and be located at viewing area in the middle section, and the LCD panel of relative configuration with the foregoing circuit substrate;

Compressed configuration between foregoing circuit substrate and above-mentioned LCD panel, connect 2 elastic electric conductors of the above-mentioned conductive pattern portions of a plurality of above-mentioned electrode terminal that sets along above-mentioned at least two limits of above-mentioned LCD panel and foregoing circuit substrate;

Bulb to above-mentioned LCD panel irradiates light.

Be provided between foregoing circuit substrate and the above-mentioned LCD panel, the light guide plate of the photoconduction of above-mentioned bulb to the above-mentioned viewing area of above-mentioned LCD panel,

Above-mentioned bulb is provided between a side the above-mentioned elastic electric conductor and above-mentioned viewing area at least.

Like this, can rely on elastic electric conductor to carry out the connection of splicing ear at the short brink of light guide plate, and, can also guarantee the irradiation of bulb to the viewing area.Its result might set splicing ear in two ends of circuit substrate short brink, can remove the restriction of circuit design, and making freely, circuit design becomes possibility.

Fig. 1 is the decomposition assembling oblique view of the liquid crystal indicator of relevant one embodiment of the invention.

Fig. 2 is the sectional drawing that bulb is buried part underground in the assembled state of Fig. 1.

Fig. 3 is the sectional drawing that bulb connection status in the assembled state of Fig. 1 is shown.

Fig. 4 is the planimetric map that the main printed circuit board of the real dress of Figure 1 and Figure 2 liquid crystal indicator is shown.

Fig. 5 is the front view (FV) of the light guide plate of Figure 1 and Figure 2.

Fig. 6 is the outboard profile of looking from the arrow VI direction of Fig. 5.

Fig. 7 is the back view of the light guide plate of Fig. 5.

Fig. 8 is the outboard profile of looking from the arrow VIII direction of Fig. 5.

Fig. 9 is that the bulb that Fig. 8 is shown is buried sectional drawing partly underground.

Figure 10 is the front view (FV) of the LCD panel of Fig. 1 and Fig. 2.

Figure 11 is the front view (FV) of the circuit substrate of Fig. 1 and Fig. 2.

Figure 12 is the back view of the circuit substrate of Figure 11.

Figure 13 is the front view (FV) of the barricade of Fig. 1 and Fig. 2.

Figure 14 illustrates the sectional drawing that bulb in the light guide plate of relevant other embodiment of the present invention is buried part underground.

Figure 15 is the oblique view that reflection horizon that relevant further embodiment of this invention is shown sets state.

Figure 16 is the planimetric map of localization part that the elastic electric conductor of relevant further embodiment of this invention is shown.

Figure 17 is the planimetric map of localization part that the elastic electric conductor of relevant yet another embodiment of the invention is shown.

Figure 18 is the oblique view that barricade that relevant yet another embodiment of the invention is shown sets state.

Figure 19 is that the liquid crystal indicator that illustrates in the past decomposes the oblique view of assembling.

Below, explain most preferred embodiment of the present invention with reference to accompanying drawing.

Fig. 1～Figure 13 illustrates the liquid crystal indicator of relevant one embodiment of the present of invention.

This liquid crystal indicator 30 uses as the display module of " pager ", as shown in Figure 4, inserts the socket 33,33 on the main printed circuit board 32 that is provided on " pager " main body and installs.

In addition, on " pager " main body, wireless 34, battery 36, oscillator 38, hummer 40, slide switch 42 etc. are installed.

Liquid crystal indicator 30 is assembled into LCD panel 46, light guide plate 48, circuit substrate 50, elastic electric conductor the 52,52, the 1st barricade 54 and the 2nd barricade 56 etc. as shown in Figure 1 in the metal framework 44 that roughly is " C " font.

LCD panel 46 as shown in figure 10, with matrix shape a plurality of scan electrodes 58 and a plurality of signal electrode 60 are configured in the A of viewing area, become scan electrode terminal 62,64 is provided in two sides (minor face), signal electrode terminal 66 is provided in state on the limit (long limit) between two sides.

Light guide plate 48 is the parts that are used for the viewing area (with reference to Figure 10) of the central authorities of the light of bulb guiding LCD panel, (bottom surface one side among Fig. 1) becomes to be invested and is used on its whole diffusion from the light of the fresnel reflecting mirror of edge illumination and the state of the overall shape of viewing area A that leads equably at its back side, as Fig. 1, Fig. 2 and shown in Figure 6, reflector plate 68 also is installed further in its back side one side.

In addition, form the localization part 70,72 of elastic electric conductor 52,52 respectively at two sides of light guide plate 48.

These localization parts 70,72 surround three faces of elastic electric conductors 52,52, and the height when forming with elastic electric conductor 52,52 compressions is identical or be lower than this height.

Specifically, as Fig. 2, Fig. 5 and shown in Figure 9, in a side localization part 70, height when forming a side of the light guide plate 48 that forms this localization part 70 with elastic electric conductor 52 compressions is identical or be lower than the reinforcement 74 of this height, and length by the incision of the side end face of this reinforcement 74 being made itself and elastic electric conductor 52 and thickness adapt and forms.

In addition, this reinforcement 74 forms the state of giving prominence to circuit substrate 50, and localization part 70 also becomes the state of formation to the jut 76 of circuit substrate one side.

The opposing party's localization part 72 is adapting the length of the side end face of light guide plate 48 opposite sides and elastic electric conductor 52 and thickness and when cutting, partly form to the side-prominent projection 78 of circuit substrate 50 1 along its slit edge edge, thus, similarly form reinforcement.Its result, the height when localization part 72 also is formed with elastic electric conductor 52 compressions is identical to be lower than this highly.

In addition, in the light guide plate 48, part relative with viewing area A and the zone between 2 localization parts 70,72 that form with thickening are formed thin layer.

Also have, in the reinforcement 74 of light guide plate 48, form recess 80, in this recess 80, bury bulb 82 underground in its bottom surface one side.

The length direction of this recess 80 is formed on than the localization part 70 of elastic electric conductor 52 more near the position of viewing area A one side and parallel with localization part, in this recess 80, so that the outstanding downwards state of terminal 84 inserts bulb 82, by burying bulb 82 underground with the slit in the bonding agent 86 filling recesses 80.

In addition, the terminal 84 of this bulb 82 is inserted the through hole 51 of circuit passband substrate 50 as shown in Figure 3, from the back side of circuit substrate 50 with scolding tin 53 connections, be fixed on the circuit substrate 50.

And then, with the reflector plate 88 topped outsides that set the reinforcement 74 of bulb 82, the light from bulb 82 is not leaked outside, illumination efficiency is improved.This reflector plate 88 for from the front of reinforcement 74 by the medial surface of localization part 70 and around the state that forms to the back side of light guide plate 48 side bonds, become in the back side of this light guide plate 48 side the fixing state in the end of the reflector plate 68 at the back side that is installed in light guide plate 48.

In addition, on the projection 78 of localization part 72, form the stopping part 90 that folder enters reflector plate 68 ends, become state with this stopping part 90 and above-mentioned reflector plate 88 fixation reflex sheets 68.Also have, the appropriate location on the back side of light guide plate 48 also integrally forms the stopping part 92 of stop reflector plate 68.

Circuit substrate 50 is as Fig. 1, Figure 11 and shown in Figure 12, the real electrode driver 94 of adorning in the front, the scan electrode terminal 96,98 of driving one side that is connected with this electrode driver 94 is provided in two sides in its front, and the signal electrode terminal 100 that drives a side is provided in the back side of circuit substrate 50 on the limit between two sides.And, with flexible circuit board for example film carrier tape manufactured using 102 connect the signal electrode terminal 100 of these driving sides and be configured in signal electrode terminal 66 on the LCD panel 46.

Also have, a plurality of real dress parts 104 are housed on the tow sides of circuit substrate 50 in fact, in addition, the outstanding insertion terminal 106 that is provided with the socket 33,33 that inserts main printed circuit board 32 on reverse side.

Elastic electric conductor the 52, the 52nd, the parts of the scan electrode terminal 96,98 of connecting circuit substrate 50 1 sides and the scan electrode terminal 62,64 of LCD panel 46 1 sides, between LCD panel 46 and circuit substrate 50 and be configured in two side, to keep conducting state with the state of LCD panel 46 and circuit substrate 50 compressions.

In this case, elastic electric conductor 52,52 is when finishing the location of horizontal direction by the localization part 70,72 of two sides that are formed on light guide plate 48, because the height when localization part 70,72 is formed with elastic electric conductor 52,52 compression is identical or be lower than this height, thus can also positively prevent to compress the time elastic electric conductor 52,52 to the unnecessary flexible deformation of transverse direction.

In addition, the medial surface with metal framework 44 prevents elastic electric conductor 52,52 flexible deformation of direction laterally.

As elastic electric conductor 52, for example, in the present embodiment, use the conductive rubber that is called as zebra-stripe connector, zebra-stripe rubber that constitutes by silica gel etc.

Except that this conductive rubber, can also to adopt fibre diameter be the anisotropic conductive sheet that is orientated to high-density along the thickness direction of insulativity silica gel of the carbon series conductive fiber about 3～20 microns or be fibre diameter the anisotropic conductive sheet that 20～30 microns metal fibre is orientated to high-density along the thickness direction of insulativity silica gel, and then, can use the flexible circuit board of being electroplated (FPC) as link, and the material of insulativity silicon sponge rubber as core.

Like this, set elastic electric conductor 52,52, just needn't use bolster as in the past and can push elastic electric conductor 52,52 equably, can cut down number of components by two side end branches between LCD panel 46 and circuit substrate 50.

Also have, even elastic electric conductor 52,52 is located at two sides of LCD panel 46 and circuit substrate 50, but since be located at bulb 82 on the light guide plate 48 than elastic electric conductor 52 more near viewing area one side, so also can not covered the light of bulb 82 by elastic electric conductor 52, thereby, can can remove the restriction on the circuit design at the side configuration elastic electric conductor 52 identical with the configuration side of bulb 82, making freely, circuit design becomes possibility.

Have again,, the scan electrode terminal 96 on the circuit substrate 50 is increased owing to can set elastic electric conductor 52,52 at two sides of circuit substrate 50.For example, in the present embodiment, as shown in figure 10, the scan electrode terminal 62 a side on LCD panel 46 is set at COM0～COM15, the opposing party's scan electrode terminal 64 is configured to COM16～COM30, and two faces were controlled about the viewing area was divided into.

At this moment, in signal electrode terminal one side, as shown in figure 10, the signal electrode terminal 66 of LCD panel 46 is made the line symmetric offset spread that begins to be divided into respectively two faces that constitute by SEG0～SEG44 from two ends.And, supply with same signal simultaneously by the signal electrode terminal 66 to line symmetry respectively, even make to increase the quantity of signal electrode end 66, the ability of driver also can be competent at half driver of signal electrode terminal 66 quantity, makes it possible to the product respective drivers with low price.

For example, electrode terminal SEG0, the SEG0 at two ends supplies with same signal in signal electrode terminal 66 simultaneously, in scan electrode terminal 62,64, some transmission sweep signals of the electrode terminal of the scan electrode terminal 62 of Xiang Yifang such as COM0～COM15, and do not send sweep signal for the opposing party's scan electrode terminal 64, after the demonstration of having finished COM0～COM15, to some supply sweep signals of COM16～COM30.Thus, on the display part that is divided into two faces, just can show with the lower driver of ability.

The 1st barricade 54 is located between light guide plate 48 and the circuit substrate 50, applies noise effect to prevent circuit substrate 50 for the receiving unit of main printed circuit board 32.

This occasion, owing between the back side of light guide plate 48 and circuit substrate 50, form space 108 in projection 76,78 that two sides in the back side of light guide plate 48 are formed by the localization part 70,72 of elastic electric conductor 52,52, so utilize this space 108, make the 1st barricade 54 is attached on the back side of light guide plate 48.In addition, the 1st barricade 54 is the parts that utilized flexible printed wiring board (FPC), and the screen layer 112 that constitutes as the insulation course 110 of base plate and the conductive materials such as copper that form on whole of this insulation course 110 that is formed by insulating material such as polyamide, polyester constitutes jointly.In addition, as conductive material, except that above-mentioned, also can use iron, aluminium, silver etc.

The 2nd barricade 56 as shown in figure 13, the same with the 1st barricade 54 also is the parts that utilized flexible printed wiring board (FPC), is made of jointly the screen layer 116 that constitutes as the insulation course 114 of base plate and the conductive material that forms on whole of this insulation course 114 that forms with insulating material.Also have, the 2nd barricade 56 has the real dress parts that make the back side that is located at circuit substrate 50 and inserts logical inserting hole 118 to the electrical equipments such as insertion terminal 106 of the socket 33 of main printed circuit board 32, and is installed in the back side of circuit substrate 50.

The inserting hole 118 of the 2nd barricade 56 is constructed as follows: thus on screen layer 116, form the 1st inserting hole 120 by the perforation that is used to form inserting hole on the etching processing screen layer 116, then, in removing the 1st inserting hole 120 of this screen layer 116, thereby by 114 punchings form the 2nd inserting hole 122 on insulation course 114 to insulation course on the position of the marginal portion of leaving the 1st inserting hole 120 on the screen layer 116.

By forming the 1st inserting hole 120 and the 2nd inserting hole 122 in this wise, make the 1st inserting hole 120 greater than the 2nd inserting hole 122.Thereby, at real dress parts with when inserting terminal 106 and inserting logical this inserting hole 118, even the lead terminal of real dress parts and insertion terminal 106 grades contact the marginal portion of the 2nd inserting hole 122, also the 1st big inserting hole 120 of contact gear ratio the 2nd inserting hole 122 not.Its result can prevent positively that the real lead terminal of adorning parts of screen layer 116 contacts that is made of conductive material from causing the state of affairs that short circuit is such with inserting terminal 106 grades, can correctly carry out the location of the 2nd barricade 56, makes assembling easily.

Among Figure 14, other embodiments of the invention are shown.

In the present embodiment, front one side of reinforcement 74 that is located at light guide plate 48 1 sides' side forms the recess 80 of opening, insert logical terminal inserting holes 124 by in this recess 80, forming the terminal 84 make bulb 82, can be easily and positively carry out the location of bulbs 82 in the recess 80.Also have, the slit in the recess 80 is by bonding agent 86 fillings.

Among Figure 15, another embodiment of the present invention is shown.

In the present embodiment, reflector plate 126 is installed, then only elastic electric conductor 52 is provided in its localization part 70 and just can also carries out the installation of reflector plate 126 simultaneously, can save the trouble that reflector plate is installed by a side at elastic electric conductor 52.

Promptly, in the embodiment of Fig. 1～shown in Figure 13, at the back side of light guide plate 48 configuration reflector plate 68, and under the state with stopping part 90,92 stop, bonding at the side crimping of the light guide plate 48 of having buried bulb 82 underground so that make reflector plate 88 be accommodated in the inboard of localization part 70.Relative therewith, in the present embodiment,, elastic electric conductor 52 is accommodated in earlier in the localization part 70, so, then can easily be provided in reflector plate 126 in the localization part 70 if give a side that earlier reflector plate 126 is fixed on this electric conductor 52 with bonding grade owing to giving.

An embodiment more of the present invention shown in Figure 16.

In the present embodiment, the localization part 128 that is formed on light guide plate 48 sidepieces is formed roughly the notch portion that is " C " font, form near the supporting part 130 in two ends of lateral surface of a pair of supporting elastic electric conductor 52.Thus, elastic electric conductor 52 simultaneously, keeps by the temporary transient location that can carry out elastic electric conductor 52 to the unnecessary flexible deformation of transverse direction in the time of roughly only just can preventing to compress with light guide plate 48, makes to be easy to carry out the assembling of elastic electric conductor 52.

Another embodiment of the present invention shown in Figure 17.

In the present embodiment, by making supporting part shown in Figure 16 130 form continuous shape, it is slot-shaped that localization part 128 is formed, and two sides can positively supporting elastic electric conductor 52, elastic electric conductor 52 is to the unnecessary flexible deformation of transverse direction in the time of can positively preventing to compress, but also the temporary transient location that can positively carry out elastic electric conductor 52 keeps.

Among Figure 18, another embodiment of the present invention is shown.

In the present embodiment, replace the 1st barricade 54 and the 2nd barricade 56 (aft section among Figure 18 in the barricade 132 is equivalent to the 1st barricade 54, and previous section is equivalent to the 2nd barricade 56) in the foregoing description to realize preventing noise with 1 barricade 132 that surrounds circuit substrate 50 fronts and the back side.And, be formed between the localization part of the elastic electric conductor 52 of two sides part of light guide plate 48 below the formed space and circuit substrate 50 by this barricade 132 is crossed on, can carry out front and back barricade connection and easily carry out the installation of barricade 132.

In addition, in this barricade 132, also utilize FPC, and inserting hole 118 also forms 2nd inserting hole 122 of the 1st inserting hole 120 of screen layer 116 sides greater than insulation course 114 sides, so that realization prevents short circuits such as real dress parts.

Also have, on circuit substrate 50, form the location, on the barricade 132 of correspondence position, form pilot hole 136, penetrate these location with hole 134 and pilot hole 136, can easily position by making pilot pin (work card mould) with hole 134.

Have, the back side of barricade 132 is provided with the adhesives 138 of insulativity again, make be easy to carry out bonding.

The present invention is not limited to the foregoing description, within the scope of main points of the present invention various distortion can be arranged.

For example, in the embodiment of Fig. 1～shown in Figure 13, the 1st barricade 54 usefulness FPC form, but are not limited to this row, also can use Copper Foil etc.

In addition, in the various embodiments described above,, show the display module of " pager " as example, but also can be applicable to the display module of camera and other display module etc.

Have again,, yet also be not limited to this example for the illuminating effect that improves bulb shows situation about being provided in the situation of the side of the topped light guide plate that bulb has been installed of reflector plate and this light guide plate on the elastic electric conductor that is disposed on the localization part of its position.For example, also can be reflection with the side of applying coating in the light guide plate that bulb has been installed, a side that perhaps is coated in the elastic electric conductor that is set on the localization part of its position to be replacing reflector plate, and then, also be not limited to the side of bulb installation.Reflector plate and reflection also can be set with reflecting materials such as coating in the four corner of the end face of light guide plate.

Claims (16)

1. A liquid crystal display device, characterized in that: have: Circuit substrates printed with conductive patterns; A liquid crystal display panel having a plurality of electrode terminals connected to the above-mentioned conductive pattern arranged along a plurality of sides and a display area arranged in the central area thereof, and arranged opposite to the above-mentioned circuit substrate; Compression is arranged between the above-mentioned circuit board and the above-mentioned liquid crystal display panel, and at least one elastic part of the electrode terminal arranged along at least one of the sides of the above-mentioned liquid crystal display panel and the above-mentioned conductive pattern of the above-mentioned circuit board is connected. Conductor; a light bulb for illuminating light on the liquid crystal display panel; A light guide plate arranged between the above-mentioned circuit board and the liquid crystal display panel to guide the light from the above-mentioned bulb to the above-mentioned display area of the above-mentioned liquid crystal display panel; The light guide plate has at least one positioning portion surrounding at least three surfaces of the at least one elastic conductor to position the elastic conductor, and the positioning portion has a height equal to or lower than a height of the elastic conductor when compressed. high; The light bulb is arranged at a position between the elastic conductor and the display area. 2. The liquid crystal display device described in claim 1, characterized in that: The light guide plate has a housing portion for housing the light bulb. 3. The liquid crystal display device described in claim 1, characterized in that: The plurality of electrode terminals are arranged along two opposing sides of the liquid crystal display panel, A plurality of electrode terminals formed on two sides are connected to the above-mentioned conductive pattern of the above-mentioned circuit board through the two above-mentioned elastic conductors, The two positioning portions for positioning the two elastic conductors are formed on both side ends of the light guide plate. 4. The liquid crystal display device described in claim 3, characterized in that: The light guide plate has a thin layer portion formed in a region facing the display area of the liquid crystal display panel, and a thin layer portion formed at a position including two of the positioning portions, and has a thin layer portion on the side of the circuit board from the thin layer portion. 2 thickened sections for outstanding thickness. 5. The liquid crystal display device described in claim 4, characterized in that: The recessed portion for housing the bulb is formed in one of the thickened portions. 6. The liquid crystal display device described in claim 5, characterized in that: The concave portion has an opening facing the liquid crystal display panel and a bottom facing the opening, and a terminal insertion hole through which the terminal of the light bulb is inserted is continuously formed on the bottom. 7. The liquid crystal display device described in any one of claims 1 to 6, characterized in that: A first reflector that reflects light from the bulb is further provided between the circuit substrate and the light guide plate; The light guide plate has a stop portion for stopping the first reflector on a surface facing the circuit board. 8. The liquid crystal display device described in any one of claims 1 to 7, characterized in that: A second reflector for reflecting light from the bulb is further provided between at least the bulb and the elastic conductor. 9. The liquid crystal display device described in claim 8, characterized in that: The second reflector is coated on a side end surface of the elastic conductor facing the bulb. 10. The liquid crystal display device described in claim 8, characterized in that: The second reflector is a reflective layer attached to a side end surface of the elastic conductor facing the bulb. 11. The liquid crystal display device described in any one of claims 3 to 6, characterized in that: The liquid crystal display panel has a plurality of scanning electrode terminals arranged along the first and second sides opposite to each other, and has a plurality of signal electrode terminals along the third side between the first and second sides, and is electrically conductive through two of the above-mentioned elastic electrodes. The body connects the plurality of scan electrodes arranged along the first and second sides to the conductive pattern on the circuit board. 12. The liquid crystal display device described in claim 11, characterized in that: It also has a flexible circuit board in which the plurality of signal electrode terminals of the liquid crystal display panel are connected to the conductive pattern of the circuit board. 13. The liquid crystal display device described in claim 12, characterized in that: The flexible circuit board simultaneously supplies the same signal to the two signal electrode terminals that are arranged at respective positions that are line-symmetrical with respect to a center line bisecting the center terminals of the plurality of signal electrodes. 14. A liquid crystal display device, characterized in that it has Circuit substrates printed with conductive patterns; It is made into a substantially rectangular shape with a pair of short sides and a pair of long sides, a plurality of electrode terminals arranged along the pair of short sides and connected to the above-mentioned conductive pattern, and a display area provided in the central area thereof, and A liquid crystal display panel disposed opposite to the circuit substrate; two elastic conductors arranged between the above-mentioned circuit substrate and the above-mentioned liquid crystal display panel in compression, connecting the plurality of electrode terminals arranged along at least the above-mentioned two sides of the above-mentioned liquid crystal display panel and the above-mentioned conductive pattern of the above-mentioned circuit substrate; a light bulb for illuminating light on the liquid crystal display panel; a light guide plate disposed between the above-mentioned circuit board and the above-mentioned liquid crystal display panel to guide the light from the bulb to the above-mentioned display area of the above-mentioned liquid crystal display panel, The light bulb is disposed between at least one of the elastic conductors and the display area. 15. The liquid crystal display device described in claim 14, characterized in that: The plurality of electrode terminals arranged along the pair of short sides of the liquid crystal display panel are scanning electrode terminals, and the plurality of signal electrode terminals are arranged along at least one of the pair of long sides of the liquid crystal display panel. 16. The liquid crystal display device described in claim 15, characterized in that: It further includes a flexible circuit board that connects the plurality of signal electrode terminals of the liquid crystal display panel to the conductive pattern of the circuit board. 17. The liquid crystal display device described in claim 16, characterized in that: The flexible circuit board simultaneously supplies the same signal to the two signal electrode terminals that are arranged at respective positions that are line-symmetrical with respect to a center line bisecting the center terminals of the plurality of signal electrodes.

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