CN101135808A - Backlight module of display apparatus and detecting method thereof - Google Patents
Backlight module of display apparatus and detecting method thereof Download PDFInfo
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- CN101135808A CN101135808A CNA2006101257460A CN200610125746A CN101135808A CN 101135808 A CN101135808 A CN 101135808A CN A2006101257460 A CNA2006101257460 A CN A2006101257460A CN 200610125746 A CN200610125746 A CN 200610125746A CN 101135808 A CN101135808 A CN 101135808A
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- upper limb
- reflex housing
- opening
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Abstract
The backlight module comprises a light guide plate, an optical membrane, a reflecting bowl, a light source and a frame; the optical membrane is located on the light guide plate; said reflecting bowl comprises an first upper edge; there a gap between the first upper edge and the optical membrane; the light source is located between the reflecting bowl and the light guide plate; said frame comprises a second upper edge and opening; the second upper edge is located between the reflecting bowl and the optical membrane; said opening passes through said second upper edge to expose at least one part of the gap; by using the opening, the quality of assembling the reflecting bowl can be easily detected.
Description
Technical field
The present invention is about a kind of backlight module, particularly a kind of about the backlight liquid crystal display module structure and the method for quality of using its assembling of structure detection of this backlight module.
Background technology
Along with the progress of electronics technology, the accompanied electronic product is in vogue especially in daily life, increases day by day for the demand of the display compact, that power consumption is low.LCD (Liquid Crystal Display; LCD) device because have that power consumption power is low, thermal value is few, high image quality, in light weight, volume is little and the advantage of applied range or the like, be often used in this type of the electronic product, even progressively replace traditional cathode-ray tube display.
With reference to figure 1, available liquid crystal display equipment 10 mainly comprises upper frame 12, liquid crystal panel 14 and backlight module 20.This liquid crystal panel 14 has the liquid crystal layer (not shown) that is arranged between a pair of upper and lower base plate (not shown), in order to show image.This backlight module 20 is in order to illuminating this liquid crystal panel 14, and is bonded to each other with this upper frame 12 and this liquid crystal panel 14 and this backlight module 20 are combined into this LCD device 10.The available liquid crystal display equipment also comprises printed circuit board (PCB) (PCB) 16, is used for carrying encapsulation (Tape Carrier Package by band; TCP), will control and drive signal is delivered to this panel of LCD 14.
With reference to figure 2, this backlight module 20 comprises light guide plate 22, fluorescent tube 24 and U-shaped reflex housing 26.This U-shaped reflex housing 26 is installed in a side of this light guide plate 22, and around this fluorescent tube 24.The notch portion of this U-shaped reflex housing 26 is towards this side of this light guide plate 22.Reflecting plate 28 is fixed in the bottom of this light guide plate 22.Optical diaphragm group 30, for example a plurality of diffusion sheets or prismatic lens are disposed on this light guide plate 22, in order to will be from this liquid crystal panel 14 of the even directive of the light of this light guide plate 22.This backlight module 20 also comprises shell on the back 32 and framework 34, wherein this shell on the back 32 combines with this framework 34, in order to this light guide plate 22, this fluorescent tube 24, this U type reflex housing 26, this optical diaphragm group 30 and this reflecting plate 28 are fixedly set between this shell on the back 32 and this framework 34.
With reference to figure 3, this U-shaped reflex housing 26 is sticked on this light guide plate 22, and and 30 palpuses of this optical diaphragm group define gap 40, in order to the headspace after these optical diaphragm group 30 thermal expansions to be provided, thereby this U-shaped reflex housing 26 is correctly assembled.
Yet, because the span of this U-shaped reflex housing 26 is excessive, therefore when assembling U type reflex housing 26, the interlude of this U-shaped reflex housing 26 tends to because of assembling the past interior extruding of improper direction towards this light guide plate 22, shown in the arrow of Fig. 4, and then the gap that makes 26 of this optical diaphragm group 30 and this U-shaped reflex housings is not enough or do not have the gap, that is causes gap 40 too small, or gap 40 disappears.At this moment, after this backlight module 20 was lighted, this optical diaphragm group 30 can produce thermal expansion.If the gap deficiency of this optical diaphragm group 30 and this U-shaped reflex housing 26, then this optical diaphragm group 30 can produce wavy deformation, as shown in Figure 5, and then can't be with from this liquid crystal panel 14 of the even directive of the light of this light guide plate 22, so that produce aberration and influence image quality.
The phenomenon of the incorrect assembling of above-mentioned this U-shaped reflex housing is to control (Output Quality Control at output quality, OQC) or input quality control (input Quality Control, IQC) be detected in the processing step, and must wait until that the processing step of aging test just can detect.So-called aging test is meant input checking signal under hot environment, detects the demonstration situation of liquid crystal panel, and demonstrates the defect point of liquid crystal panel, make product more stable, improve product with stable quality, and allow liquid crystal panel and backlight module under hot environment, switch on, in order to find its bad point.If just detect the phenomenon of the incorrect assembling of above-mentioned this U-shaped reflex housing at the processing step of aging test, then whole LCD device must be disassembled opened again, could adjust the correct gap between this optical diaphragm group and this U-shaped reflex housing, to increase the process time of whole LCD device significantly thus, and waste unnecessary cost.
Therefore, a kind of backlight module and detection method thereof need be provided, aforesaid problem can be solved.
Summary of the invention
One object of the present invention is to provide a kind of backlight module, and its framework comprises opening, and this opening is as form usefulness, covers in the side-play amount of the past interior extruding after the assembling in order to the reflection that detects this backlight module.
Another object of the present invention is to provide a kind of backlight module, whether by the open design on its framework, it is correct to observe the reflex housing assembling of this backlight module from this opening.
A further object of the present invention is to provide a kind of detection method of backlight module, utilize this method, the testing staff can learn the quality of the assembling of backlight module in output quality control program (OQC) stage or import Quality Control processing procedure preface (IQC) stage, and needn't just learn in the aging test stage, and then shorten process time of whole LCD device, and reduce unnecessary cost waste.
For achieving the above object, the invention provides a kind of backlight module, comprise light guide plate, blooming piece, reflex housing, light source and framework.This blooming piece is disposed on this light guide plate; This reflex housing comprises first upper limb, wherein defines a gap between this first upper limb and this blooming piece; This light source is arranged between this reflex housing and this light guide plate; This framework comprises second upper limb and opening, and wherein this second upper limb is positioned on this reflex housing and this blooming piece, and this opening runs through this second upper limb, and exposes this gap of at least a portion.
Compared with prior art, according to backlight module of the present invention, its reflex housing can be by observation this opening (that is form) toward the situation of the side-play amount of interior extruding, can in the processing step of output quality control and output quality control, be detected, and must not wait until that the processing step of aging test just can detect.If it is defective to detect the side-play amount of above-mentioned reflex housing, then can immediately whole LCD device be disassembled out again, to adjust the correct gap between this optical diaphragm group and this reflex housing, will reduce the process time significantly thus.
In order to allow above-mentioned and other purposes of the present invention, feature and the advantage can be more obvious, hereinafter will cooperate appended diagram, be described in detail below.
Description of drawings
Fig. 1 is the perspective exploded view of the LCD device of prior art;
Fig. 2 is the perspective exploded view of the backlight module of prior art;
Fig. 3 is the local amplification profile synoptic diagram of the backlight module of prior art, and it shows that this U-shaped reflex housing is correctly assembled;
Fig. 4 is the U-shaped reflex housing of prior art and the floor map of light guide plate, and its interlude that shows this U-shaped reflex housing is toward interior extruding;
Fig. 5 is the local amplification profile synoptic diagram of the backlight module of prior art, and it shows that this U-shaped reflex housing is by incorrect assembling;
Fig. 6 is the perspective exploded view of the backlight module of the first embodiment of the present invention;
Fig. 7 is the local amplification profile synoptic diagram of backlight module of the present invention, and it shows that this reflex housing is correctly assembled;
Fig. 8 is the schematic top plan view of backlight module of the present invention, and the some that observes this first opening in the C display window of its enlarging section manifests this first upper limb of part;
Fig. 9 is the schematic top plan view of backlight module of the present invention, observes this first upper limb that manifests part all of this first opening in the D display window of its enlarging section;
Figure 10 is the local amplification profile synoptic diagram of backlight module of the present invention, and it shows that this reflex housing is by incorrect assembling;
Figure 11 is the schematic top plan view of backlight module of the present invention, and its upper limb place that shows the framework on this reflex housing side only is provided with an opening;
Figure 12 is the local amplification profile synoptic diagram of the backlight module of another embodiment of the present invention, and its first upper limb that shows first reflex housing is not attached on the light guide plate;
Figure 13 is the local amplification profile synoptic diagram of the backlight module of the second embodiment of the present invention, and it shows that this reflex housing is correctly assembled;
Figure 14 is the local amplification profile synoptic diagram of backlight module of the present invention, and its first upper limb that shows first reflex housing contacts this optical diaphragm group;
Figure 15 is the local amplification profile synoptic diagram of backlight module of the present invention, and its first upper limb that shows first reflex housing is toward this optical diaphragm group of interior extruding;
Figure 16 is the process flow diagram of the detection method that is used for backlight module of the first embodiment of the present invention:
Figure 17 is the process flow diagram of the detection method that is used for backlight module of the second embodiment of the present invention.
Embodiment
With reference to figure 6, it shows the backlight module 120 of the first embodiment of the present invention, and it can be used for liquid crystal indicator, for example is similar to the liquid crystal indicator of Fig. 1.This LCD comprises upper frame, liquid crystal panel and backlight module 120.This backlight module 120 is in order to illuminating this liquid crystal panel, and is bonded to each other with this upper frame and this liquid crystal panel and this backlight module 120 are combined into this LCD device.
This backlight module 120 can be side light source type backlight module.Generally speaking, the backlight module of side light source type includes: the types such as backlight module of the backlight module of the backlight module of one-sided limit light source type, bilateral limit light source type (as have the light source that is arranged in parallel each other or have the light source that the L type is arranged) and many sides light source type.As shown in Figure 6, in this first embodiment, this backlight module 120 is a bilateral limit light source type backlight module, that is it bilaterally respectively has a light source; Yet the present invention is not limited to the backlight module of the type, and any type of backlight module (as one-sided limit light source type, many sides light source type or other possible backlight module etc.) all is an applicable scope of the present invention.With reference to figure 6, this backlight module 120 comprises light guide plate 122, first light source 124, the first reflex housing 126a, secondary light source 125 and the second reflex housing 126b again.This first reflex housing 126a is installed in a side of this light guide plate 122, and around this first light source 124 (for example fluorescent tube etc.), in order to reflect the light of this first light source 124.In the group that these first light source, 124 optional white cold cathode fluorescent lamp, light emitting diode (LED), halogen tungsten lamp, electro-luminescence display device (ELD), emission of cathode lamp and metal halide lamp are constituted one of them.This first reflex housing 126a can be U-shaped or ㄇ shape, and its notch portion is intended for this side of this light guide plate 122.Reflecting plate 128 is fixed in the bottom of this light guide plate 122.Optical diaphragm group 130 comprises for example a plurality of diffusion sheets, prismatic lens or brightening piece etc. or its correlation combiner and constitutes, and is disposed on this light guide plate 122, in order to will be from this liquid crystal panel of the even directive of the light of this light guide plate 122.This backlight module 120 also comprises shell on the back 132 and framework 134, wherein this shell on the back 132 combines with this framework 134, in order to this light guide plate 122, this first light source 124 and this secondary light source 125, this first reflex housing 126a, this second reflex housing 126b, this optical diaphragm group 130 and this reflecting plate 128 are arranged between this shell on the back 132 and this framework 134.
With reference to figure 7, this first reflex housing 126a is sticked on this light guide plate 122.This first reflex housing 126a comprises first upper limb 142, and this first upper limb 142 is positioned on this light guide plate 122.Define first gap 140 between this first upper limb 142 and this blooming piece 130,, so just claim that this first reflex housing 126a is correctly assembled in order to the headspace after these optical diaphragm group 130 thermal expansions to be provided.This framework 134 comprises second upper limb 144 and first opening 146, and wherein this second upper limb 144 is positioned on this first reflex housing 126a and this optical diaphragm group 130, and this first opening 146 runs through this second upper limb 144.With reference to figure 8, the vertical view of its backlight module 120, this first opening 146 be as form usefulness, and in order to the side-play amount of first upper limb 142 that detects this first reflex housing 126a, that is this first reflex housing 126a is toward the side-play amount of interior extruding.Shown in the enlarging section C of Fig. 8,, can observe the situation of the past bias internal of first upper limb 142 from first opening 146.
In this first embodiment, when definition manifests partly this first upper limb 142 when the some of this first opening 146 (shown in the enlarging section C of Fig. 7 and Fig. 8), the side-play amount of then judging first upper limb 142 of this first reflex housing 126a is qualified, that is this first reflex housing 126a toward the side-play amount of interior extruding in allowed band, represent that this first gap 140 still keeps preset distance, as shown in Figure 7, that is represent that this reflex housing 126a assembling is correct.And when whole this first upper limb 142 that all manifests part of observing this first opening 146, shown in the enlarging section D of Fig. 9, the side-play amount of then judging first upper limb 142 of this first reflex housing 126a is defective, that is this first reflex housing 126a toward the side-play amount of interior extruding not in allowed band, represent that this first gap 140 does not keep preset distance, and this first upper limb 142 is in contact with one another with this blooming piece 130, as shown in figure 10.When taking place, judge that then this reflex housing 126a assembling is incorrect or bad as Fig. 9 or situation shown in Figure 10.
In addition, as mentioned above, need there be first gap 140 in first upper limb 142 with this blooming piece under the situation of correct assembling, the headspace when as optical diaphragm group 130 thermal expansion taking place.Therefore, as shown in Figure 7, in this first embodiment, under the situation of correct assembling, first gap 140 of at least a portion can be revealed in this first opening 146; That is as shown in Figure 8, first gap 140 of at least a portion can be revealed in the zone 160 that is not covered by first upper limb 142 of first opening 146.
Because the span of this first reflex housing 126a is often very big, therefore in the process of backlight module assembling, the interlude of this first reflex housing 126a is sometimes easily toward interior extruding, and cause first upper limb 142 of reflex housing 126a excessively to lean on toward this optical diaphragm group 130, even cause both excessive contact, and produce wavy optical diaphragm group 130, as Fig. 9 and shown in Figure 10.Therefore, by the design of first opening 146 of the present invention, after backlight module assembling is finished, can judge immediately that whether qualified the assembling of reflex housing of this backlight module is.In addition, preferably, shown in the enlarging section A and enlarging section B of Fig. 6, the position of this first opening 146 be positioned at this second upper limb 144 in the middle of place 152, in order to the side-play amount of the interlude 158 of first upper limb 142 that more clearly detects this first reflex housing 126a.Yet the position of first opening 146 of the present invention is not only to limit to the middle place that is located at this second upper limb 144, and it also can be arranged on any convenient position of observing.In addition, in another embodiment, more than one first opening 146 also can be set on first upper limb 144 of this framework 134, and, increase and judge the whether qualified standard of this first reflex housing 126a assembling by observing a plurality of these first openings 146 simultaneously.In addition, in the present invention, the peristome shape of this first opening 146 is not limited yet, the shape that it can be square, rectangle, circle or any convenient design and observes.
With reference to figure 6, similarly, this backlight module 120 also comprises the second reflex housing 126b again, and it is installed in another side of this light guide plate 122, and around this secondary light source 125.This second reflex housing 126b comprises the 3rd upper limb (not shown), and it is similar to this first upper limb 142 substantially, and wherein the 3rd upper limb is positioned on this light guide plate 122, and and this optical diaphragm group 130 between define second gap.Again with reference to figure 8 or Fig. 9, this framework 134 also comprises the 4th upper limb 154 and second opening 156, its position, shape and function class substantially is similar to this second upper limb 144 and first opening 146, wherein the 4th upper limb 154 is positioned on this second reflex housing 126b and this optical diaphragm group 130, and this second opening 156 runs through the 4th upper limb 154.This second opening 156 is also as form, and in order to the side-play amount of the 3rd upper limb that detects this second reflex housing 126b, that is this second reflex housing 126b is toward the side-play amount of interior extruding.Preferably, this second opening 156 can be located at the middle place of the 4th upper limb 154.Similarly, in another embodiment, more than one second opening 156 can be set also on the 4th upper limb 154 of this framework 134, and, increase and judge the whether qualified standard of this second reflex housing 126b assembling by observing a plurality of these second openings 156 simultaneously.
In addition, among this first embodiment, though it only introduces the backlight module of bilateral limit light source type, yet just as aforementioned, its invention also can be applicable to the backlight module of one-sided limit light source type or many sides light source type.When being applied to one-sided limit light source type backlight module, therefore only because of it has only a reflex housing and a light source, need the upper limb place of the framework on this reflex housing side that opening is set and get final product, the vertical view after it is assembled then as shown in figure 11, tool one opening 146 only.In addition, what is particularly worth mentioning is that, though in the invention described above first is implemented, the last lower edge of the first reflex housing 126a is sticked on this light guide plate 122, yet, in another embodiment, first upper limb 142 of the first reflex housing 126a is not must be attached on the light guide plate 122, for example, the ora terminalis of first upper limb 142 can trim with the ora terminalis of light guide plate 122 or not contact, as shown in figure 12.In the embodiment of Figure 12, first upper limb 142 is contactless with this light guide plate 122.
In the second embodiment of the present invention, as shown in figure 13, all the backlight module 120 with this first embodiment is identical haply for the structure of its backlight module 320, the similar label of similar element marking, only differently be in position in first opening, 346 its places of second embodiment and move (shown in Fig. 7 and 13) in than the more past panel in position of first opening 146 of first embodiment, and definition is not when this first opening 346 manifests this any first upper limb 342 (as shown in figure 13), the side-play amount of then judging first upper limb 342 of this first reflex housing 326a is qualified, that is this moment this first reflex housing 326a toward the side-play amount of interior extruding in allowed band, represent that this first upper limb 342 still keeps predetermined distance (as first gap 340) with this optical diaphragm group 330, so judge that this first reflex housing 326a assembling is correct.And when a part of of this first opening 346 or when manifesting this first upper limb 342 of part all, show first upper limb, 342 these optical diaphragm group 330 of contact of this first reflex housing 326a or first upper limb, 342 past these optical diaphragm group 330 of interior extruding that Figure 15 shows this first reflex housing 326a as Figure 14, the side-play amount of then judging first upper limb 342 of this first reflex housing 326a is defective, that is this first reflex housing 326a toward the side-play amount of interior extruding not in allowed band, represent that this first gap 340 does not keep preset distance and this first upper limb 342 to be in contact with one another with this blooming piece 330.When above-mentioned situation takes place, judge that then this reflex housing 326a assembling is incorrect or bad.
In addition, as described in ditto, first upper limb 342 needs to exist first gap 340, the headspace when as optical diaphragm group 330 thermal expansion taking place with this optical diaphragm group 330 under the situation of correct assembling.Therefore, as shown in figure 13, in this second embodiment, under the situation of correct assembling, first gap 340 of at least a portion will be revealed in this first opening 346.
In addition,, the invention provides a kind of detection method, in order to the side-play amount situation of the reflex housing of the backlight module that detects the first embodiment of the present invention or the situation of its assembling quality with reference to Figure 16.This detection method comprises the following step: at first, in step 200, the backlight module of the first embodiment of the present invention is provided, it comprises blooming piece, first reflex housing, first light source and framework, wherein this first reflex housing comprises first upper limb, define first gap between this first upper limb and this blooming piece, this first light source is arranged between this first reflex housing and this light guide plate, this framework comprises second upper limb and first opening, this second upper limb is positioned on this first reflex housing and this blooming piece, and this first opening runs through this second upper limb.Then, in step 202, as form, detect the side-play amount of first upper limb of this first reflex housing or the quality of its assembling by this first opening.
In step 204, when the some of this first opening manifests this first upper limb of part, then in step 206, the side-play amount of judging first upper limb of this first reflex housing is qualified, that is this first reflex housing toward the side-play amount of interior extruding in allowed band or claim that this first reflex housing assembling is correct.Preferably, the area of the part that manifests this first upper limb of this first opening is about 1: 2 with the ratio of whole area of this first opening.Perhaps, again with reference to the enlarging section C of figure 8, after this backlight module 120 is lighted, can be by observing in this first opening 146 (that is form), the some of this first opening 146 manifests this first upper limb 142 of part and the remainder 160 of this first opening (the not part that is covered by this first upper limb 142) when appearing light, then can be judged this first reflex housing assembling correctly immediately.Perhaps, shown in the enlarging section C of Fig. 8, when two kinds of colors (a kind of is color and a kind of color that is presented for remainder 160 of first reflex housing 142) occurring in this first opening 146, then this first reflex housing assembling of decidable is correct.
In step 208 when this first opening whole manifest this first upper limb of part, then at step 2l0, the side-play amount of judging first upper limb of this first reflex housing is defective, that is this first reflex housing toward the side-play amount of interior extruding not in allowed band or claim this first reflex housing assembly failure.Perhaps, when single kind of color (i.e. the color of first reflex housing) occurring in this form, the side-play amount of then judging first upper limb of this first reflex housing is defective.Perhaps, with reference to the enlarging section D of figure 9, after this backlight module 120 was lighted, what can only observe this first opening 146 (that is form) all manifested this first upper limb 142 and can't observe light the time, then can judge this first reflex housing assembly failure immediately.
Similarly, this backlight module of first embodiment also comprises secondary light source; Second reflex housing, it comprises the 3rd upper limb, wherein defines second gap between the 3rd upper limb and this blooming piece; This secondary light source is arranged between this second reflex housing and this light guide plate.This framework also comprises the 4th upper limb and second opening, and wherein the 4th upper limb is positioned on this second reflex housing and this blooming piece, and this second opening runs through the 4th upper limb.Similarly, detect the whether qualified method and the step of assembling of this second reflex housing, be same as the method and the step of this first reflex housing of aforementioned detection fully.
In addition,, the invention provides another kind of detection method, in order to the side-play amount situation of the reflex housing of the backlight module that detects the second embodiment of the present invention or the situation of its assembling quality with reference to Figure 17.This detection method comprises the following step: at first, in step 400, the backlight module of the second embodiment of the present invention is provided, all the backlight module with this first embodiment is identical haply for its structure, only differently is in position in first its place of opening of second embodiment and moves in than the more past panel in position of first opening of first embodiment.Then, in step 402, as form, detect the side-play amount of first upper limb of this first reflex housing or the quality of its assembling by this first opening.
In step 404, when this first opening does not manifest this any first upper limb, then in step 406, the side-play amount of judging first upper limb of this first reflex housing is qualified, that is this first reflex housing toward the side-play amount of interior extruding in allowed band or claim that this first reflex housing assembling is correct.Perhaps, when the non-color that is same as this first upper limb of single kind of color and this single kind of color in observing this first opening, occurring, then judge this first reflex housing assembling correctly.Perhaps, after this backlight module was lighted, this first opening whole when appearing light, judged that then this first reflex housing assembling is correct.
In step 408, when a part of of this first opening or when manifesting this first upper limb of part all, then in step 410, the side-play amount of judging first upper limb of this first reflex housing is defective, that is this first reflex housing toward the side-play amount of interior extruding not in allowed band or claim this first reflex housing assembly failure.Perhaps, when occurring two kinds of colors in this first opening maybe when a kind of color that is same as first reflex housing only appears in this first opening, then judge this first reflex housing assembly failure.Perhaps, after this backlight module is lighted, when the some that observes this first opening manifests this first upper limb of part and the residue of this first opening when partly appearing light or when this first opening can't observe light fully, then judge this first reflex housing assembly failure.
Similarly, this backlight module of second embodiment also comprises secondary light source; Second reflex housing, it comprises the 3rd upper limb, wherein defines second gap between the 3rd upper limb and this blooming piece; This secondary light source is arranged between this second reflex housing and this light guide plate.This framework also comprises the 4th upper limb and second opening, and wherein the 4th upper limb is positioned on this second reflex housing and this blooming piece, and this second opening runs through the 4th upper limb.Similarly, detect the whether qualified method and the step of assembling of this second reflex housing, be same as the method and the step of this first reflex housing of aforementioned detection fully.
Compared with the prior art, the side-play amount situation of the reflex housing of backlight module of the present invention can be by the opening (form) of observation particular design, can in the processing step of output quality control or output quality control, be detected, and must not wait until that the processing step of aging test just can detect.If detect the defective or assembly failure of side-play amount of above-mentioned reflex housing, then can immediately whole backlight module be disassembled out again, with the installation position of readjusting this reflex housing and adjust this optical diaphragm group and this reflex housing between correct gap, to reduce the process time significantly thus, and reduce unnecessary cost waste.
Though the present invention is disclosed by previous embodiment, so it is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention, when doing various changes and modification.Therefore protection scope of the present invention is when looking being as the criterion that accompanying Claim defines.
Claims (28)
1. backlight module comprises:
Light guide plate;
Blooming piece is disposed on this light guide plate;
Reflex housing comprises first upper limb, wherein defines a gap between this first upper limb and this blooming piece;
Light source is arranged between this reflex housing and this light guide plate; And
Framework comprises second upper limb and at least one opening, and wherein this second upper limb is positioned on this reflex housing and this blooming piece, and this opening runs through this second upper limb, and this gap of at least one part is revealed in this opening.
2. backlight module as claimed in claim 1, wherein whether this opening is used for observing the assembling of this reflex housing correct from this opening as form.
3. backlight module as claimed in claim 2 wherein when the some of this opening manifests this first upper limb of part, claims then that this reflex housing assembling is correct or claims that the side-play amount of first upper limb of this reflex housing is qualified.
4. backlight module as claimed in claim 2 wherein when this opening whole manifest this first upper limb of part, then claims this reflex housing assembly failure or claims that the side-play amount of first upper limb of this reflex housing is defective.
5. backlight module as claimed in claim 2 wherein when this opening does not manifest any this first upper limb, claims then that this reflex housing assembling is correct or claims that the side-play amount of first upper limb of this reflex housing is qualified.
6. backlight module as claimed in claim 2 wherein when part or all of this opening manifests this first upper limb of part, then claims this reflex housing assembly failure or claims that the side-play amount of first upper limb of this reflex housing is defective.
7. backlight module as claimed in claim 1, wherein this opening is positioned at the middle place of this second upper limb.
8. backlight module as claimed in claim 1, wherein this first upper limb is positioned on this light guide plate.
9. backlight module as claimed in claim 1, wherein this blooming piece comprises diffusion sheet.
10. backlight module as claimed in claim 1, wherein this blooming piece comprises prismatic lens or brightening piece.
11. backlight module as claimed in claim 1, wherein this light source one of is selected from cold cathode fluorescent lamp, light emitting diode (LED), halogen tungsten lamp, electro-luminescence display device (ELD), emission of cathode lamp and the metal halide lamp.
12. backlight module as claimed in claim 1, wherein this reflex housing is positioned at a side of this light guide plate.
13. backlight module as claimed in claim 1 also comprises:
Shell on the back combines with this framework, in order to this light guide plate, this blooming piece, this reflex housing and this light source are arranged between this shell on the back and this framework.
14. a liquid crystal indicator comprises:
Upper frame;
Liquid crystal panel; And
Backlight module comprises:
Light guide plate;
Blooming piece is disposed on this light guide plate;
Reflex housing comprises first upper limb, wherein defines a gap between this first upper limb and this blooming piece;
Light source is arranged between this reflex housing and this light guide plate; And
Framework, comprise second upper limb and at least one opening, wherein this second upper limb is positioned on this reflex housing and this blooming piece, this opening runs through this second upper limb, and this gap of at least one part is revealed in this opening, and this backlight module and this upper frame be bonded to each other and this liquid crystal panel be fixedly set in wherein, to be combined into this LCD device.
15. a detection method that is used for backlight module comprises the following step:
Backlight module is provided, it comprises blooming piece, reflex housing, light source and framework, wherein this reflex housing comprises first upper limb, define a gap between this first upper limb and this blooming piece, this light source is arranged between this reflex housing and this light guide plate, and this framework comprises second upper limb and opening, and this second upper limb is positioned on this reflex housing and this blooming piece, and this opening runs through this second upper limb; And
By this opening as form, detect this reflex housing first upper limb the installing side-play amount or detect the fine or not situation of the assembling of this reflex housing.
16. detection method as claimed in claim 15 wherein when the some of this opening manifests this first upper limb of part, judges that then the side-play amount of first upper limb of this reflex housing is qualified or judge that this reflex housing assembling is correct.
17. detection method as claimed in claim 15, wherein the area of this part of this opening is about 1: 2 with the ratio of whole area of this opening.
18. detection method as claimed in claim 15 wherein when occurring two kinds of colors in this opening, judges that then the side-play amount of first upper limb of this reflex housing is qualified or judge that this reflex housing assembling is correct.
19. detection method as claimed in claim 15, wherein after this backlight module is lighted, when the some that observes this opening manifests part this first upper limb and the residue of this opening and partly appears light, judge that then the side-play amount of first upper limb of this reflex housing is qualified or judge that this reflex housing assembling is correct.
20. detection method as claimed in claim 15 wherein when this opening whole manifest this first upper limb of part, is judged that then the side-play amount of first upper limb of this reflex housing is defective or is judged this reflex housing assembly failure.
21. detection method as claimed in claim 15 when wherein single kind of color occurring in observing this opening, is judged that then the side-play amount of first upper limb of this reflex housing is defective or is judged this reflex housing assembly failure.
22. detection method as claimed in claim 15 wherein after this backlight module is lighted, can't observe light by this opening, then judges this reflex housing assembly failure.
23. detection method as claimed in claim 15 wherein when this opening does not manifest any this first upper limb, judges that then this reflex housing assembling is correct.
24. detection method as claimed in claim 15 wherein when a part of of this opening or when all manifesting this first upper limb of part, is then judged this reflex housing assembly failure.
25. detection method as claimed in claim 15 when wherein single kind of color of appearance and this single kind of color are different from the color of this first upper limb in observing this opening, judges that then this reflex housing assembling is correct.
26. detection method as claimed in claim 15 wherein when two kinds of colors occurring in this opening, is then judged this reflex housing assembly failure.
27. detection method as claimed in claim 15, wherein after this backlight module is lighted, this opening appear light all the time, judge that then this reflex housing assembling is correct.
28. detection method as claimed in claim 15, wherein after this backlight module is lighted, when manifesting part this first upper limb and the residue of this opening and partly appear light, the some that observes this opening, then judges this reflex housing assembly failure maybe when when this opening can't observe light fully.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101257460A CN100555043C (en) | 2006-08-29 | 2006-08-29 | The backlight module of display and detection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101257460A CN100555043C (en) | 2006-08-29 | 2006-08-29 | The backlight module of display and detection method thereof |
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| Publication Number | Publication Date |
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| CN101135808A true CN101135808A (en) | 2008-03-05 |
| CN100555043C CN100555043C (en) | 2009-10-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424927A (en) * | 2012-04-25 | 2013-12-04 | Lgcns株式会社 | Method and apparatus for preventing light leakage from light guide plate |
| CN105629909A (en) * | 2014-10-31 | 2016-06-01 | 群创光电股份有限公司 | Automatic detection method |
| CN106444126A (en) * | 2016-11-24 | 2017-02-22 | 京东方科技集团股份有限公司 | Plastic frame, backlight module and display device |
| CN107091427A (en) * | 2014-05-29 | 2017-08-25 | 瑞仪光电股份有限公司 | Backlight module |
| CN114199149A (en) * | 2021-11-10 | 2022-03-18 | 深圳同兴达科技股份有限公司 | Backlight gap measuring method |
-
2006
- 2006-08-29 CN CNB2006101257460A patent/CN100555043C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424927A (en) * | 2012-04-25 | 2013-12-04 | Lgcns株式会社 | Method and apparatus for preventing light leakage from light guide plate |
| CN107091427A (en) * | 2014-05-29 | 2017-08-25 | 瑞仪光电股份有限公司 | Backlight module |
| CN107091427B (en) * | 2014-05-29 | 2020-05-08 | 瑞仪光电股份有限公司 | Backlight module |
| CN105629909A (en) * | 2014-10-31 | 2016-06-01 | 群创光电股份有限公司 | Automatic detection method |
| CN105629909B (en) * | 2014-10-31 | 2018-03-30 | 群创光电股份有限公司 | Automated detection method |
| CN106444126A (en) * | 2016-11-24 | 2017-02-22 | 京东方科技集团股份有限公司 | Plastic frame, backlight module and display device |
| CN114199149A (en) * | 2021-11-10 | 2022-03-18 | 深圳同兴达科技股份有限公司 | Backlight gap measuring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100555043C (en) | 2009-10-28 |
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