CN1766705A

CN1766705A - Backlight components

Info

Publication number: CN1766705A
Application number: CN 200410085920
Authority: CN
Inventors: 黄炳锋; 潘柏志
Original assignee: Coretronic Corp
Current assignee: Coretronic Corp
Priority date: 2004-10-25
Filing date: 2004-10-25
Publication date: 2006-05-03

Abstract

A backlight source assembly includes a light board, a light board base, and at least one detachable/combinable limiting frame. The light board base is arranged on one side of the bottom surface of the light board, and two side frames extend upward from two opposite sides of the light board base to clamp the two opposite sides of the light board. The limiting frame is sleeved on the side of the open end of the light board base to limit the surface of the light board in the light board base.

Description

Backlight assembly

Technical field

The present invention relates to a kind of backlight assembly, particularly relate to the lamp plate stationary installation that in the backlight assembly that utilizes lamp plate as light source, is used for fixing lamp plate.

Background technology

Flat display apparatus becomes main display device gradually, because the display panels of flat display apparatus is non-self luminous element, needs backlight assembly as light-emitting component especially.Be used in the light source of flat display apparatus, the direct-type backlight source component is a kind of light source that more widely uses.

In the direct-type backlight source component, can utilize a plurality of fluorescent tubes to be arranged in parallel with as light source, in addition, also can utilize lamp plate as light source, compare with fluorescent tube as light source with lamp plate, also have and be convenient to assembling and shine advantages such as even.

Consult Figure 1A, Figure 1A is that known technology is with the synoptic diagram of lamp plate 4 as the backlight assembly 3 of light source.At with the direct-type backlight source component 3 of lamp plate 4 as flat display apparatus 2 required area sources; known technology is that lamp plate 4 is installed in the lamp plate pedestal 6 of alumina based material; and in lamp plate pedestal 6 four sides extend upward respectively and outwards horizontal-extending to form side frame 602; by outside horizontally extending side frame 602 for diffuser plate 8, optical material (containing diffusion barrier, bright enhancement film, diaphragm etc.) 10 and display panels (LCD panel) the 11 stacked tops that are carried on; install fixed frame 12 at last, just form flat display apparatus 2.

Shown in Figure 1B, yet, the edge of general lamp plate 4 is luminous zone 4A not, so actual effective luminous zone 4B of lamp plate 4 can be littler than its lamp plate 4 overall dimensions, in known mounting means, lamp plate 4 needs to be placed on the lamp plate pedestal 6 by the top, so outward extending side frame 602 can't coat not luminous zone 4A of lamp plate 4 edges around the lamp plate pedestal 6, make the width (D) of invalid viewing area will comprise not luminous zone 4A and side frame 602 width, therefore, can cause the overall dimensions of width (D) and whole backlight of the invalid viewing area at flat display apparatus 2 edges to increase, and need utilize the fixed frame 12 of larger skirt frame to cover invalid viewing area, and increase the material cost of fixed frame 12.And, if will dismantle when having assembled the flat-panel screens of finishing 2, need lamp plate each layer structure dismounting one by one in regular turn more than 4 could be taken out the lamp plate 4 of fault, so mode quite is not easy to change lamp plate 4.

Therefore, fundamental purpose of the present invention is to provide a kind of structure of backlight assembly, with different structures and assembling mode, addresses the above problem.

Summary of the invention

One object of the present invention is, by a kind of lamp plate stationary installation that is used in the backlight assembly, upwardly extending side frame can be extended coating the not luminous zone of lamp plate edge, with the width of the invalid viewing area, edge of reduced plan display device to backlight assembly is inboard.

Another object of the present invention is, by a kind of lamp plate stationary installation that is used in the backlight assembly, in the mode of side assembling lamp plate, so that assembling still can be taken out lamp plate after finishing.

Another purpose of the present invention is, by a kind of lamp plate stationary installation that is used in the backlight assembly, utilizes side frame directly to contact with lamp plate, to provide lamp plate preferable heat radiation approach.

The present invention relates to a kind of in being used in a backlight assembly in order to fix the lamp plate stationary installation of a lamp plate.This lamp plate stationary installation comprise a lamp plate pedestal and at least one detachable/combination spacing frame.

This lamp plate pedestal is arranged at this lamp plate bottom surface one side, and these lamp plate pedestal at least two relative side frames extend upward, with the relative dual side-edge of this lamp plate of clamping, in order to the first direction to this lamp plate plate face two-dimensional space, spacing this lamp plate.

Further, the upper edge of this side frame is to coat the edge of this lamp plate, in order to locate this lamp plate and to increase radiating effect to the inboard extension of this backlight assembly.Wherein this lamp plate pedestal is to form a heat-dissipating space to the side direction depression that differs from this lamp plate.

Spacing frame is to be socketed on the side that this lamp plate pedestal is not provided with the openend of side frame, and is spacing to this lamp plate in order to the second direction to this lamp plate plate face two-dimensional space, and forms a housing with this side frame, to surround this lamp plate edge all around.

This spacing frame can be a cover limit, with side that coats this lamp plate pedestal opening end and the side that coats this lamp plate.It also can be an edge strip, two ends of this edge strip extend two parallel trips with orthogonal directions, this two trip inserts the terminal hole of contiguous this lamp plate pedestal opening end of this side frame in order to the side from this lamp plate pedestal opening end, make this edge strip spacing to this lamp plate, and surround this lamp plate edge all around with this side frame to this second direction.

In addition, this spacing frame also can be to be an edge strip and two corner fixtures, this edge strip is spacing to this lamp plate from the side of this lamp plate pedestal opening end, this corner fixture is to extend two trips with orthogonal directions, this two trip is the terminal hole that inserts this side frame neighbouring open end respectively, and the hole that inserts this edge strip end, fixing this edge strip, and make this edge strip spacing to this lamp plate by two corner fixtures in this second direction.Whole edge strip and two corner fixtures can surround this lamp plate edge all around with this side frame.

Therefore, by the lamp plate fixture structure of backlight assembly of the present invention, utilize the lamp plate pedestal of side openings and the spacing frame of movable assembling to assemble lamp plate in the side.Except upwardly extending side frame around making the lamp plate pedestal can to coat the lamp plate edge, increase outside the radiating effect to the inboard extension of backlight assembly, also be convenient to from assemble the backlight assembly of finishing, dismantle lamp plate.In addition, the edge that extends to the inside can provide more firm location and spacing to lamp plate.

Can be further understood by the following detailed description and accompanying drawings about the advantages and spirit of the present invention.

Description of drawings

Figure 1A is that known technology is with the exploded view of lamp plate as the backlight assembly of light source;

Figure 1B is that known technology is with the side view of lamp plate as the backlight assembly of light source;

Fig. 2 is the synoptic diagram of lamp plate stationary installation in the backlight assembly of the present invention;

Fig. 3 is the schematic side view of backlight assembly of the present invention;

Fig. 4 is the synoptic diagram of the spacing frame auxiliary lamp of the present invention plate reflection ray;

Fig. 5 is the synoptic diagram of second specific embodiment of the spacing frame of the present invention;

Fig. 6 is the synoptic diagram of the 3rd specific embodiment of the spacing frame of the present invention;

Fig. 7 is the synoptic diagram of first embodiment of frame of the present invention;

Fig. 8 is the synoptic diagram of second embodiment of frame of the present invention; And

Fig. 9 is the synoptic diagram of another embodiment of backlight assembly of the present invention.

Accompanying drawing formula symbol description:

8: diffuser plate 10: optical material

12: go up fixed frame 3,31: backlight assembly

4,32:

lamp plate

4A, 32A: luminous zone not

4B, 32B: effective luminous zone

D, d: the width of invalid viewing area

34: lamp plate stationary installation 6,36: lamp plate pedestal

38: spacing frame 602,3602: side frame

D1: first direction 40: heat-dissipating space

D2: second direction 3802: cover limit

3604: openend 3804a: edge strip

3804b: trip 3806a, d: edge strip

3806c: corner fixture 3806b: trip

11: display panels 2,30: flat display apparatus

3606: coated side 39: reflective inclined-plane

41: side cover frame 42: opening

43: box body

Embodiment

Consult Fig. 2.The present invention relates to a kind of lamp plate stationary installation 34, this lamp plate stationary installation is used in the backlight assembly 31, and in order to fix a lamp plate 32, lamp plate stationary installation 34 comprises a lamp plate pedestal 36 and at least one spacing frame 38.

Lamp plate pedestal 36 is arranged at lamp plate 32 bottom surfaces, lamp plate pedestal 36 at least two relative sides extend upward to form side frame 3602, in order to first direction D1 to lamp plate 32 plate face two-dimensional spaces, spacing lamp plate 32, the inside again horizontal-extending coated side 3606 of side frame 3602 is for diffuser plate 8 and optical material 10 equivalent-loads, the width of coated side 3606 can be established according to the not luminous zone 32A width of lamp plate 32, effectively to cover not luminous zone 32A.

Spacing frame 38 is socketed on openend 3604 sides that lamp plate pedestal 36 is not provided with side frame 3602, spacing frame 38 is a cover limit in the present embodiment, to coat the side of lamp plate pedestal 36 openends 3604, and coat the side of lamp plate 32, in order to second direction D2 to lamp plate 32 plate face two-dimensional spaces, spacing to lamp plate 32, and form a square frame to surround whole edge around the lamp plate 32 with side 3602 frames.Two openend 3604 sides are arranged among Fig. 2 embodiment, therefore two spacing frames 38 are arranged, but lamp plate pedestal 36 also can extend upward three side frames 3602, so, just only need a spacing frame 38 (as shown in Figure 4).

The step of mounting plane display device 30 is to extend upward 3602 of side frames with what lamp plate 32 side direction were inserted lamp plate pedestal 36, again with the side socket lamp plate pedestal 36 of spacing frame 38 from openend 3604, after in regular turn with known diffuser plate 8, optical material 10, display panels (LCD panel) 11 and go up fixed frame 12 and be installed in from level to level on the coated side 3606, just form flat display apparatus 30.

Because backlight assembly of the present invention provides by the side direction group and goes into lamp plate 32, so when lamp plate 32 needs maintenance or changes, after only the spacing frame 38 of socket need being removed, lamp plate 32 can be taken out by side and change, can remove elements such as changing diffuser plate 8, optical material 10, display panels (LCDpanel) 11 in the replacing process from, so can be convenient to take out lamp plate after assembling is finished.In addition, because lamp plate 32 is adopted the design of independent separate formula with diffuser plate 8, optical material material 10, last fixed frame 12, display panels 11 etc., have quick replacing lamp plate 32 functions.

Consult Fig. 3, because side frame 3602 has the not luminous zone 32A that the coated side 3606 that extends internally covers lamp plate 32, the side frame of comparing known technology stretches out and makes the width of invalid viewing area comprise not luminous zone 4A and side frame 602 width, the width (d) of the invalid viewing area at flat display apparatus of the present invention edge only comprises the width of the coated side 3606 of side frame 3602, it will dwindle than the width (D) of known technology, so the border width of fixed frame 12 can reduce, and reduce the material cost of fixed frame 12.The part that the present invention extends internally is simultaneously in order to coat lamp plate 32 edges, therefore, make the non-demonstration of flat display apparatus 30 narrower than being known as with border width (d), except comparatively attractive in appearance and tool texture, also under the condition of keeping identical display frame size, reduced the volume of flat display apparatus 30.

Fig. 4 is the synoptic diagram of spacing frame 38 auxiliary lamp plate 32 reflection rays of the present invention.Further, the spacing frame 38 inboard partial design that contact with lamp plate 32 can be become oblique reflective inclined-plane 39.So, except can locating lamp plate 32 and auxiliary heat dissipation, also help the light of lamp plate 32, see through the upwards reflection of reflective inclined-plane 39, make the backlight visible area have preferable Luminance Distribution on every side to the side loss.In addition, the side frame 3602 inboard parts that contact with lamp plate 32 also can be designed to reflective inclined-plane 39, and identical effect is so also arranged.

Consult Fig. 5, Fig. 5 is the synoptic diagram of second specific embodiment of the spacing frame 38 of the present invention.In addition, spacing frame 38 also can be an edge strip 3804a, two ends of edge strip 3804a extend two parallel trip 3804b with orthogonal directions, this two trip 3804b is close to the terminal hole of lamp plate pedestals 36 openends in order to the openend 3604 inserting side frames 3602 from lamp plate pedestal 36, or make trip 3804b be attached to the surface of lamp plate pedestal 36, with fixed parts such as screw (not shown) trip 3804b and lamp plate pedestal 36 are fixed in addition.So, make edge strip 3804a spacing to lamp plate 32, and form square frame to surround lamp plate 32 whole edge on every side with side frame 3602 to second direction D2.Further specify, as described in the related content of Fig. 2, Fig. 5 also can have three upwardly extending side frames 3602, so, just only needs an edge strip 3804a.

Consult Fig. 6, Fig. 6 is the synoptic diagram of the 3rd specific embodiment of the spacing frame 38 of the present invention.In addition, spacing frame 38 also can be to be an edge strip 3806a and two corner fixture 3806c.Edge strip 3806a coats lamp plate 32 and spacing with second direction D2 to lamp plate 32 from the side of lamp plate pedestal 36 openends 3604, can have an edge strip 3806d directly to extend upward from lamp plate pedestal 36 forms, the frame that forms door shapes with side frame 3602 is to coat three sides around the lamp plate 32, and the edge strip 3806 of this moment just equals aforesaid side frame 3602.But need keep openend 3604 sides at least, so that the two corner fixture 3806c of this edge strip of edge strip 3806a and corresponding matching 3806a fix lamp plate 32.

Corner fixture 3806c extends two trip 3806b with orthogonal directions, this two trip 3806b inserts the wherein terminal hole of a side frame 3602 contiguous lamp plate pedestal 36 openends 3604 respectively, and insert in the hole of edge strip 3806a end, or make two trip 3806b be attached to the surface of lamp plate pedestal 36 and edge strip 3806a respectively, with fixed parts such as screw (not shown) trip 3806b and lamp plate pedestal 36 and edge strip 3806a are fixed in addition.With fixing edge strip 3806a, can make edge strip 3806a coat lamp plate 32 and spacing by two corner fixture 3806c, and form square frame, surround all edges around the lamp plate 32 with side frame 3602 and edge strip 3806d to lamp plate 32 in second direction D2.

Consult Fig. 7, Fig. 7 is the synoptic diagram of first embodiment of side frame 3602 of the present invention.In addition, side frame 3602 can link with 41 activities of side cover frame.Cooperation illustrates with spacing frame 38 patterns of Fig. 5, and lamp plate stationary installation 34 also comprises dual side-edge cover frame 41, and these side cover frames 41 are from this dual side-edge frame 3602 of top difference socket.Wherein the top of each side cover frame 41 is to backlight assembly 30 inboard extensions to coat the edges of lamp plate 32, in order to location lamp plate 32, and sees through side cover frame 41 and contacts heat conduction and increase radiating effect with lamp plate 32.So, can get an extra advantage, promptly lamp plate 32 is except installing with the described side direction of previous embodiment, and present embodiment can be installed lamp plate 32 in lamp plate pedestal 36 by downward D3 from the top.In addition, in the present embodiment, also can be directly with upwardly extending side frame 3602 around the lamp plate pedestal 36, so, just need not adopt spacing frame, and side cover frame can adopt four groups, maybe four side can be overlapped the integrally formed framed structure of frame, during assembling, earlier lamp plate 32 is inserted in the lamp plate pedestal 36, assemble side cover frame again and can finish.

Consult Fig. 8, Fig. 8 is the synoptic diagram of second embodiment of side frame 3602 of the present invention, dispel the heat by side frame 3602 auxiliary lamp plates 32 in the present embodiment, wherein the upper edge of side frame 3602 is extended a coated side 3606 to backlight assembly 30 inboards, not luminous zone 32A with the edge that coats lamp plate 32, in order to location lamp plate 32, and the inside surface of coated side 3606 contacts to have increased contact area with lamp plate 32, the heat that lamp plate 32 is sent conducts to lamp plate pedestal 36, producing flow phenomenon, and increase radiating effect and reduce lamp plate 32 temperature with extraneous air.Wherein the lamp plate pedestal 36 of lamp plate 32 bottom sides is to form a heat-dissipating space 40 to the side direction depression that differs from lamp plate 32.This heat-dissipating space 40 and coated side 3606 all have the auxiliary effect that increases heat radiation.

Consult Fig. 9, be to be the structure that a side has opening 42 in the present embodiment with lamp plate pedestal 36, its be with three sides of pedestal 36 upwards and inwardly horizontal-extending form side frame 3602, the space that side frame 3602 surrounds is a chute, and lamp plate 32 is to be installed in a box body 43 to form a lamp plate assembly that can extract, by opening 42 lamp plate 32 is slipped into lamp plate pedestal 36 along the chute that side frame 3602 forms, again diffuser plate 8, optical material 10 etc. is located on the side frame 3602 of lamp plate pedestal 36 in regular turn, in order to form backlight assembly.When lamp plate 32 damages need to change, only need lamp plate 32 is extracted out by the opening 42 of lamp plate pedestal 36 sides, can reach quick replacing lamp plate 32, and need not unload elements such as diffuser plate 8, optical material 10.The homonymy of opening 42 or opposite side also can be provided with a spacing frame 38 outward.

Lamp plate pedestal of the present invention can produce the side frame 3602 that extends internally, side frame than known technology stretches out, the part that the present invention extends internally is simultaneously in order to coat lamp plate 32 edges, therefore making the non-demonstration of flat display apparatus 30 is narrow with the edge than known technology, except comparatively attractive in appearance and tool texture, also under the condition of keeping identical display frame size, reduced the volume of flat display apparatus 30.

Therefore,, utilize the lamp plate pedestal 36 of side openings and the spacing frame 38 of movable assembling by the structure of backlight assembly 30 of the present invention, but side assembling lamp plate 32.Except upwardly extending side frame 3602 around making lamp plate pedestal 36 can to coat lamp plate 32 edges, increase outside the radiating effect to backlight assembly 30 inboard extensions, also be convenient to dismounting lamp plate 32 from assemble the backlight assembly of finishing 30.In addition, the edge that extends to the inside can provide more firm location and spacing to lamp plate 32.

By the above detailed description of preferred embodiments, be to wish to know more to describe feature of the present invention and spirit, and be not to come category of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain in the category that is arranged in the claim that the present invention will apply for of various changes and tool equality.

Claims

1. A backlight assembly, comprising:

a lamp panel for outputting a planar light source; and

A lamp board base placed under the lamp board, the two opposite sides of the lamp board base extend upwards respectively to form two side frames, and the upper edge of the side frame extends to the inside of the backlight assembly to cover the edge of the light panel.

2 . The backlight unit as claimed in claim 1 , wherein the inner surface of the side frame can be an oblique or right-angle reflective surface for reflecting light from the lamp panel. 3 .

3. The backlight assembly as claimed in claim 1, wherein the lamp board base is recessed toward a side different from the lamp board to form a heat dissipation space.

4. The backlight assembly according to claim 1, further comprising at least one limiting frame, the limiting frame is movably socketed on the side of the opening end of the lamp board base other than the side frame, so as to The light board is limited in the light board base.

5 . The backlight unit as claimed in claim 4 , wherein the inner surface of the limiting frame can be an oblique or right-angle reflective surface for reflecting light from the lamp panel. 6 .

6. The backlight unit as claimed in claim 4, wherein the limiting frame is a set of sides for covering the sides of the opening end of the base of the lamp board and the sides of the lamp board, It is used to limit the lamp board in the base of the lamp board.

7. The backlight unit as claimed in claim 4, wherein the limiting frame is a side strip, and two parallel tenons extend from two ends of the side strip in an orthogonal direction, and the two tenons are used to The side edge of the opening end of the lamp board base is inserted into the hole at the end of the side frame adjacent to the opening end of the lamp board base, so that the edge bar restricts the lamp board to be limited in the lamp board base.

8. The backlight assembly according to claim 4, wherein the limiting frame is a side bar and two corner fixing parts, and the side bar limits the lamp panel from the side of the opening end of the lamp panel base , the corner fixing part extends two tenons in the orthogonal direction, and the two tenons are respectively inserted into the hole at the end of the side frame adjacent to the opening end of the light board base, and into the hole at the end of the side bar, through the two corner fixing parts to The edge strip is fixed, and the edge strip limits the lamp panel in the lamp panel base.

9. A lamp board fixing device, which is used in a backlight assembly to fix a lamp board, and the lamp board is used to output a plane light source, the lamp board fixing device includes:

a lamp panel base placed under the lamp panel, the two opposite sides of the lamp panel base respectively extend upwards to form two side frames; and

At least one limiting frame, the limiting frame is movably sleeved on the side of the opening end of the lamp panel base other than the side frame, so as to limit the lamp panel in the lamp panel base.

10. The lamp panel fixing device according to claim 9, wherein the upper edge of the side frame further extends to the inside of the backlight assembly to cover the edges of the two opposite sides of the lamp panel for positioning The light panel also increases the cooling effect.

11. The lamp panel fixing device according to claim 9, wherein the limiting frame is a set of edges, and the sleeve is used to cover the side of the opening end of the lamp panel base and cover the lamp panel The side of the lamp board is used to limit the position of the lamp board in the base of the lamp board.

12. The lamp panel fixing device as claimed in claim 9, wherein the limiting frame is a side bar, and two parallel tenons extend from two ends of the side bar in an orthogonal direction, and the two tenons are used for The side of the opening end of the lamp board base is inserted into the hole at the end of the side frame adjacent to the opening end of the lamp board base, so that the side strip restricts the lamp board in the lamp board base.

13. The lamp panel fixing device according to claim 9, wherein the limiting frame is a side strip and two corner fixing parts, and the side strip restricts the lamp panel from the side of the opening end of the lamp panel base. Position, the corner fixing part is to extend two tenons in the orthogonal direction, the two tenons are respectively inserted into the end holes of the side frame adjacent to the opening end of the light board base, and inserted into the holes at the end of the side strip through the two corner fixing parts The edge strip is fixed and the light panel is limited by the edge strip in the base of the light panel.

14. The lamp panel fixing device according to claim 9, wherein a reflective surface extends from the upper edge of the limiting frame to the lamp panel from the inside, and the inclined surface of the reflective surface is upward or vertical, so as to avoid the light from the lamp in the future. Light from the side of the plate is reflected upwards.

15. The lamp panel fixing device according to claim 9, wherein the reflective surface extends from the upper edge of the side frame to the lamp panel from the inside, and the inclined surface of the reflective surface is upward or vertical, so as to reflect light from the lamp panel. Sideways light bounces upwards.

16. The lamp panel fixing device according to claim 9, characterized in that: the lamp panel fixing device further comprises two side frames, and the side frames are respectively sleeved on the two side frames from above, wherein the side frames The upper part of the side cover frame extends to the inner side of the backlight assembly to cover the edge of the lamp board for positioning the lamp board and increasing the cooling effect.

17. A backlight assembly, comprising:

a light board for outputting a plane light source;

a lamp panel base placed under the lamp panel, the opposite two sides of the lamp panel base are respectively extended upwards to form two side frames; and

At least one side cover frame, the side panel cover frame is movably sleeved on the side frame above, and the upper part of the side cover frame extends to the inside of the backlight assembly to cover the edge of the lamp panel for positioning The light board.

18. The backlight unit as claimed in claim 17, wherein the upper part of the side frame extends toward the inner side of the backlight unit to contact the lamp board, so as to increase the cooling effect.

19. The backlight assembly as claimed in claim 17, wherein the inner surface of the side frame can be an oblique or vertical reflective surface for reflecting light from the lamp panel.

20. The backlight assembly according to claim 17, further comprising at least one limiting frame, the limiting frame is movably socketed on the side of the opening end of the lamp board base other than the side frame, so that the The light board is limited in the light board base.

21. A backlight assembly, comprising:

A light panel assembly including a light panel and a box, the light panel is installed in the box; and

A lamp board base, the opposite side of the lamp board base has a slide groove, and the side adjacent to the slide groove has an opening, and the lamp board assembly can be slid into the lamp board base through the opening .

22. The backlight assembly as claimed in claim 21, wherein the side of the light board base can extend horizontally upwards and inwards to form a side frame, and the inside of the side frame can be the slide groove.

23. The backlight unit as claimed in claim 21, wherein a limiting frame is provided on the same side or the opposite side of the opening.

24. The backlight assembly as claimed in claim 21, wherein the lamp panel assembly is a removable lamp panel assembly.