CN201184944Y

CN201184944Y - Backlight module unit

Info

Publication number: CN201184944Y
Application number: CNU2008200090756U
Authority: CN
Inventors: 卓维帆
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-15
Filing date: 2008-04-15
Publication date: 2009-01-21
Anticipated expiration: 2018-04-15

Abstract

The utility model discloses a backlight module. The backlight module comprises at least a light-emitting unit, and the light-emitting unit comprises a light guiding block body and at least a light-emitting part, wherein, the light guiding block body is a plate body, the bottom surface of the light guiding block body faces to the top surface thereof, and at least a columnar slot hole is formed on the bottom surface of the light-emitting block body in an extending way; furthermore, three light reflecting layer are respectively arranged on the periphery and the bottom surface of the light guiding block body as well as the inner bottom part of the columnar slot hole; each light-emitting part is respectively arranged in each columnar slot hole of the light guiding block body, the light rays emitted out by each light-emitting part are enabled to enter the light guiding block body after passing through the inner periphery of each columnar slot hole, and then are projected to the top surface of the light guiding block body after being reflected by the light reflecting layers, and the uniform backlight effect can be formed by the mutual interference of the light rays among each light-emitting unit, thereby manufacturing display panels with various sizes, and achieving the purposes of effectively reducing the manufacturing cost and enabling the light guiding plate to have various styles and various sizes.

Description

Module backlight

Technical field

The utility model is about module backlight, refers to a kind of made module backlight of a plurality of luminescence units that makes up especially.

Background technology

General speech, video picture mode by the LCD panel, be to make light enter liquid crystal layer by the liquid crystal bottom surface, and come conducting light by liquid crystal, only, liquid crystal itself is a luminescent material not, therefore the LCD panel needs by module backlight, be that light throws from lower to upper,, make its normally show image to supply its sufficient brightness and the light source that is evenly distributed.Traditionally, module backlight is to use side-light type (Edge lighting) structure, its structure mainly comprises light guide plate (light guide plate), reflecting plate (reflector) and prism ... etc. all multicomponents, see also the module backlight 1 of shown in Figure 1 one traditional side-light type structure, this module 1 backlight comprises a light guide plate 12, the side of this light guide plate 12 is provided with and is arcuation and the opening light reflector plate 13 to this light guide plate 12, and in the space of the side of this

light guide plate

12 and 13 formation of this light reflector plate, one cold cathode fluorescent lamp 10 is set, the bottom surface of this light guide plate 12, other is provided with a reflecting plate 14, so, when this cold cathode fluorescent lamp 10 penetrated light source, light source can directly enter this light guide plate 12, or was entered in this light guide plate 12 by 13 reflections of light reflector plate, and this light source is via the refraction in this light guide plate 12, after the reflection of reflecting plate 14, by the end face projection of this light guide plate 12 and go out, make the LCD panel product can show image.

Only, the side-light type module 1 backlight that this kind is traditional is that following shortcoming is arranged:

1, all place the side of light guide plate 12 because of its cold cathode fluorescent lamp 10, so, when the user when using display panel, if the position is in the side of this display panel,, and feel the brightness disproportionation of this display panel then easily because of the situation of side light leakage.

2, the side that is provided in a side of this light guide plate 12 because of this cold cathode fluorescent lamp 10, so, part away from cold cathode fluorescent lamp 10, then only can be by the reflection of reflecting plate 14, and obtain light source, therefore, when thin more or size is big more when this module 1 employed light guide plate 12 backlight, then need expend more power supply, just can make the brightness of panel even.

3, because, same light guide plate board, only can produce the light guide plate of same size and moulding, to reach the purpose of volume production, make that the panel manufacturer can't liking because of client individual, and change the moulding of this light guide plate arbitrarily, and then make the moulding dullness of LCD product, more and more like distinguished phychology and can't satisfy the modern.

4, traditional side-light type module 1 backlight mainly is to use integrally formed light guide plate, making that the panel manufacturer is essential produces and the light guide plate of the many different sizes of stock, with the panel demand that changes in response to different size, and large scale and special formed light guide plate more cause problems and the difficulty of dealer on producing, transporting and store, and cause dealer's production cost high all the time.

So, how to design and a kind ofly need not change board, and can produce the module backlight of various sizes and moulding according to this, promptly become panel manufacturers and make great efforts research and desire most ardently an important topic of reaching.

The utility model content

Because many shortcomings of above-mentioned module backlight, therefore creator's development and Design goes out a kind of module backlight of the present utility model, this module backlight is to be combined by a plurality of leaded light blocks and illuminating part, and produce the display panel of various sizes and moulding according to this, to solve the problem of traditional backlight module.

A purpose of the present utility model, it is a kind of module backlight of design, this module backlight is to be combined by at least one luminescence unit, wherein this luminescence unit is flatly side-by-side, this luminescence unit comprises a leaded light block and at least one illuminating part (as: light emitting diode), wherein this leaded light block is a light-transmitting materials (as: acryl, Polyvinylchloride, be called for short PVC and polycarbonate, be called for short PC ... Deng) plate body made, this leaded light block is provided with at least one cylindrical recesses hole, respectively this cylindrical recesses hole is to be extended towards its end face by the bottom surface of this leaded light block, be positioned in this cylindrical recesses hole for this illuminating part, in addition, the periphery of this leaded light block, the inside bottom in bottom surface and this cylindrical recesses hole, all be respectively equipped with a reflector layer (as: reflective adhesive tape, the baking vanish layer, layer of paint, printed layers and reflective paster ... etc.), so, the light that this illuminating part is launched, can be via the refraction of this leaded light block, reach reflection through this reflector layer, and be projected to the end face of this leaded light block equably, so, the panel manufacturer can be by a plurality of luminescence units of combination, form the module backlight of various sizes, and produce the display panel of various sizes according to this, realization need not to use integrated large-size light-conducting plate as module backlight, to reach the purpose that effectively reduces production costs.

Another purpose of the present utility model, be that the dealer can be by the shape and the size that change this leaded light block, so that luminescence unit can assembled arrangement become difform module backlight, make the user on the spatial configuration of environment, more flexible, and no longer like as the traditional backlight module, only be defined in rectangular light guide plate, so, the panel product that uses module backlight of the present utility model to produce, the modern that can fit more likes distinguished phychology.

Another purpose of the present utility model, provide a kind of mode backlight of high brightness, because this leaded light block can be provided with more than one cylindrical recesses hole, and all be provided with illuminating part in each cylindrical recesses hole, so, the light of this illuminating part can directly penetrate this leaded light block, and the periphery of this leaded light block, the bottom surface reaches the respectively bottom in this cylindrical recesses hole, be coated with a reflector layer all respectively, will directly not refract to the light of end face, reflex to end face, make that the dealer can be by the quantity in this cylindrical recesses hole of increase and decrease, the brightness of adjusting and improving this module backlight easily, but not like as traditional side-light type module backlight, only can provide light source by the set illuminating part of light guide plate side, cause the lower shortcoming of light utilization efficiency takes place, so, the module backlight that luminescence unit of the present utility model is combined into, far beyond traditional side-light type module backlight, can provide more sufficient and uniform light source.

The beneficial effects of the utility model are:

Module backlight of the present utility model can provide more sufficient and uniform light source far beyond traditional side-light type module backlight, and can effectively reduce production cost.

Description of drawings

Can be for just auditor to the utility model purpose, technical characterictic and effect thereof, do further understanding and understand, below enumerate the embodiment conjunction with figs., be described in detail as follows, wherein:

Fig. 1 is side-light type structure module backlight transversal section;

Fig. 2 is preferred embodiment of the present utility model;

Fig. 3 is module backlight of the present utility model transversal section;

Fig. 4 is another embodiment of the present utility model;

Fig. 5 A is an embodiment of leaded light block of the present utility model;

Fig. 5 B is another embodiment of leaded light block of the present utility model;

Fig. 5 C is the another embodiment of leaded light block of the present utility model; And

Fig. 6 is an embodiment of illuminating part of the present utility model.

The main element symbol description

Module backlight ... 2

Luminescence unit ... 3

Illuminating part ... 30

Light emitting diode ... 301

Circuit board ... 302

The cylindrical recesses hole ... 31

Inside bottom ... 311

Inboard periphery ... 312

The leaded light block ... 32

End face ... 321

The bottom surface ... 322

First reflector layer ... 34

Second reflector layer ... 35

The 3rd reflector layer ... 36

Diffusion sheet ... 45

The blast sheet ... 46

Embodiment

The utility model is a kind of module backlight, sees also shown in Figure 2ly, and this module 2 backlight is to comprise at least one luminescence unit 3, and this luminescence unit 3 comprises a leaded light block 32 and at least one illuminating part 30; Wherein this leaded light block 32 is plate bodys that a light-transmitting materials is made, the bottom surface 322 of this leaded light block 32 is towards its end face 321, extend and be provided with at least one cylindrical recesses hole 31, the space in this cylindrical recesses hole 31 respectively, be to hold an illuminating part 30, and the inside bottom 311 in the periphery of this leaded light block 32, bottom surface 322 and this cylindrical recesses hole 31, all be respectively equipped with a reflector layer 34,35,36 (as shown in Figure 3), so that the emitted light of this illuminating part 30, can be projected to the end face 321 of this module 2 backlight more equably.

In a preferred embodiment of the present utility model, see also shown in Figure 2 again, be to be a square with this leaded light block 32, and be provided with an illuminating part 30 and be example, describe, this leaded light block 32 is to be provided with a cylindrical recesses hole 31, this cylindrical recesses hole 31 is to be extended towards the end face 321 of this leaded light block 32 by the bottom surface 322 of this leaded light block 32 to form, see also shown in Figure 3, the end face 321 of inside bottom 311 contiguous these leaded light blocks 32 in this cylindrical recesses hole 31, the diameter of one end of inboard periphery 312 contiguous these inside bottom 311 in this cylindrical recesses hole 31, it is diameter less than an end of these inboard periphery 312 contiguous these leaded light block 32 bottom surfaces 322, this inside bottom 311 is to be a cancave cambered surface towards these leaded light block 32 bottom surfaces 322 in addition, and so, this illuminating part 30 can be located in these 31 formed spaces, cylindrical recesses hole.

Moreover, see also Fig. 2 and shown in Figure 3, the periphery of this leaded light block 32, be coated with one first reflector layer 34 (as: reflective adhesive tape, the baking vanish layer, layer of paint, printed layers and reflective paster ... Deng), this inside bottom 311, then be coated with one second reflector layer 35, again, 322 of the bottom surfaces of this leaded light block 32 are coated with one the 3rd reflector layer 36, so, the light (shown in arrow among the figure) that this illuminating part 30 is launched, must be via the inboard periphery 312 in this cylindrical recesses hole 31, enter in this leaded light block 32, and via the refraction of this leaded light block 32, and this reflector layer 34,35,36 reflection, and make light be projected to the end face 321 of this leaded light block 32 equably, so that this luminescence unit 3 can provide sufficient brightness and the light source that is evenly distributed, wherein this first reflector layer 34 and second reflector layer 35 can design according to the dealer, make it have light transmission, and its light transmission scope is 0% to 100%, make light can pass these reflector layers 34,35, with end face 321 brightness that improve this luminescence unit 3, and obtain the even effect (shown in arrow among the figure) that light is interfered formation alternately, in addition, 36 of the 3rd reflector layers are complete light tight, avoid light to leak, and can will refract to the light of the 3rd reflector layer 36 fully, reflex to the end face 321 of this leaded light block 32, to increase the light utilization efficiency of this luminescence unit 3.In addition, when the dealer need make up a plurality of luminescence units 3, when forming required module 2 backlight, see also shown in Figure 2ly again, respectively this luminescence unit 3 is can be flatly side-by-side, and the periphery of this luminescence unit 3 respectively, is can be against each other.

Again, see also shown in Figure 4, in another embodiment of the present utility model, this luminescence unit 3 also can be according to dealer's demand, and random set is should luminescence unit 3, make it present the module backlight 2 of a T type, this special one carry be aforesaid combination shaping, the non-T type that only limits to, be to can be arbitrary shape, only panel component (as: reflecting plate, diffusion sheet, the blast sheet that is complementary need be arranged ... Deng) can form a display panel; So, the panel manufacturer can be according to required panel size or panel-shaped, by a plurality of luminescence units 3 of combination, form a required module 2 backlight, and produce the display panel of large scale or different shape according to this, and need not additionally to purchase can the production large-size light-conducting plate, the board of special form light guide plate, or the light guide plate of buying in advance and the many different sizes of stock is to reach effective reduction production, to transport and the purpose of storage cost.

See also shown in Figure 4 again, in this another embodiment, this leaded light block 32 is that 4 cylindrical recesses holes 31 can be set, respectively this cylindrical recesses hole 31 is to become equidistantly to be arranged in two files, and when a plurality of luminescence units 3 are arranged in module 2 backlight, respectively the spacing in adjoining cylindrical recesses hole 31 in this leaded light block 32 also equals aforesaid spacing, so, this module 2 backlight can provide a uniform light source, only, in other embodiment of the present utility model, this cylindrical recesses hole 31 spacing to each other respectively, non-only be defined as identical, also can be according to the demand of different panels product, and make a change consumer demand so that this module 2 backlight is fitted more.

In addition, in other embodiment of the present utility model, see also Fig. 5 A, shown in Fig. 5 B and Fig. 5 C, the shape of this leaded light block 32, non-ly only be defined in square, and can be other shape, as: hexagon, right cylinder or square shape body ... Deng, and this leaded light block 32 can be provided with a plurality of cylindrical recesses hole 31, and the shape in this cylindrical recesses hole 31, also can be identical with the shape of this leaded light block 32, shown in Fig. 5 A, the leaded light block 32 of hexagon is provided with the cylindrical recesses hole 31 of hexagonal shape, or be different, shown in Fig. 5 B, cylindrical leaded light block 32 is provided with the cylindrical recesses hole 31 of rectangle, again, a plurality of cylindrical recesses hole 31 on the same leaded light block 32, shape to each other be not be defined in identical, shown in Fig. 5 C, on the leaded light block 32 of hexagon, also can be provided with rectangle, circular and hexagonal cylindrical recesses hole 31, so, this leaded light block 32 is the demand in visual dealer's design, and change to different shapes, with the design that the makes display panel consumer demand of more fitting.

What these need special one were carried be, see also shown in Figure 3 again, the inside bottom 311 in this cylindrical recesses hole 31, be to can be tabular, arc surfaced or taper ... Deng, in addition, this cylindrical recesses hole 31 is to can be the cylindrical grooves hole, flat column recess hole or awl cylindrical recesses hole ... Deng, the dealer can change the inside bottom 311 in this cylindrical recesses hole 31 and the combined shaped of this inboard periphery 312 voluntarily, again, the two ends diameter of the inboard periphery 312 in this cylindrical recesses hole 31 does not also limit as the preferred embodiment as described above, need to hold in addition greater than an end, also can make the diameter of an end of contiguous these inside bottom 311 of inboard periphery 312 in this cylindrical recesses hole 31, equal the diameter of an end of these inboard periphery 312 contiguous these leaded light block 32 bottom surfaces 322, so, as long as this inside bottom 311 and this inboard periphery 312 formed cylindrical recesses holes 31, can supply to place this illuminating part 30, and make the light of this illuminating part 30 enter this leaded light block 32, be cylindrical recesses of the present utility model hole 31.

In addition; see also Fig. 3 and shown in Figure 6; this illuminating part 30 comprises a light emitting diode (Light Emitting Diode) 301 and one circuit board 302; the shape of this circuit board 302 and size; can make this leaded light block 32 placed on it; and the shape of this circuit board 302 can change arbitrarily; and this light emitting diode 301 on this circuit board 302; be with this leaded light block 32 on this cylindrical recesses hole 31 couplings; so; when this leaded light block 32 is assembled mutually with this illuminating part 30; the bottom surface 322 of this leaded light block 32 is end faces of this circuit board 302 of applying; and this light emitting diode 301 is to place in this cylindrical recesses hole 31; only; in other embodiment of the present utility model; if this leaded light block is provided with a plurality of cylindrical recesses hole; then this circuit board is in correspondence respectively on the position in this cylindrical recesses hole; all be provided with a light emitting diode; so; as long as can be after this leaded light block be combined into module backlight; can provide the leaded light block required light, so that the end face of this module backlight produces light uniformly, all are the utility model is advocated protection in this desire illuminating parts.

This special one carry be, in other embodiment of the present utility model, also can be according to panel manufacturer's demand, use material (as: acryl, Polyvinylchloride and the polycarbonate of leaded light block ... Deng), or cooperation different panels product (as: advertising lamp box, illuminating lamp and projector ... Deng) and change the type shape of the quantity in array mode, cylindrical recesses hole of leaded light block or shape, leaded light block, so that module backlight can be applied to different business demands.In addition, in previous embodiment of the present utility model, see also shown in Figure 3 again, this module 2 backlight is the diffusion sheets (Diffusion) 45 of can arranging in pairs or groups, blast sheet (Prism Lens) 46 and other auxiliary element use together, wherein, this diffusion sheet 45 and blast sheet 46 are the end face places that are located at this luminescence unit 3 in regular turn, and array mode to each other, be closely to connect or to leave ground, space to connect, and this diffusion sheet 45 and blast sheet 46 also can cooperate the size and the shape of this module 2 backlight, and make a change, so,, will the reflected refraction utilization factor of the light of this luminescence unit 3 be improved more by assisting of this element, improving the light utilization efficiency of this module 2 backlight, and then increase the effective utilization of this module 2 backlight.

Press; the above; it only is preferred embodiment of the present utility model; only, the interest field that the utility model is advocated is not limited thereto; press all this technology personages that is familiar with; according to the disclosed technology contents of the utility model, can think easily and equivalence change, all should belong to and not break away from protection category of the present utility model.

Claims

1, a kind of module backlight is characterized in that, comprises at least one luminescence unit, and this luminescence unit comprises:

A leaded light block is the plate body that a light-transmitting materials is made, and the bottom surface of this leaded light block is towards its end face, extends to be provided with at least one cylindrical recesses hole, respectively the end face of contiguous this leaded light block of the inside bottom in this cylindrical recesses hole;

One first reflector layer is located at the periphery of this leaded light block;

At least one second reflector layer is located at the respectively inside bottom in this cylindrical recesses hole respectively;

One the 3rd reflector layer is located at the bottom surface of this leaded light block; And

At least one illuminating part is located at respectively respectively in this cylindrical recesses hole.

2, module backlight as claimed in claim 1 is characterized in that, wherein the light transmission scope of this first reflector layer and second reflector layer is that 0% to 100%, the three reflector layer is then light tight fully.

3, module backlight as claimed in claim 2 is characterized in that, wherein the inside bottom in this cylindrical recesses hole is a cancave cambered surface towards the bottom surface of this leaded light block.

4, module backlight as claimed in claim 2 is characterized in that, wherein the inside bottom in this cylindrical recesses hole is a plane.

As claim 3 or 4 described modules backlight, it is characterized in that 5, wherein also comprise diffusion sheet and blast sheet, wherein this diffusion sheet and blast sheet are located at the end face place of this luminescence unit in regular turn.

6, module backlight as claimed in claim 5 is characterized in that, wherein the inboard periphery in this cylindrical recesses hole is close to the diameter of an end of this inside bottom, is close to the diameter of an end of this leaded light block bottom surface less than this inboard periphery.

7, module backlight as claimed in claim 5 is characterized in that, wherein the inboard periphery in this cylindrical recesses hole is close to the diameter of an end of this inside bottom, equals the diameter of an end of this contiguous this leaded light block bottom surface of inboard periphery.

8, module backlight as claimed in claim 5 is characterized in that, respectively this cylindrical recesses hole on the wherein same leaded light block, and shape is all identical to each other.

9, module backlight as claimed in claim 5 is characterized in that, respectively this cylindrical recesses hole on the wherein same leaded light block, and shape is neither identical to each other.

10, module backlight as claimed in claim 5 is characterized in that, wherein respectively the leaded light block of this luminescence unit shape is all identical to each other.