CN2862102Y

CN2862102Y - Backlight module unit and LCD

Info

Publication number: CN2862102Y
Application number: CN 200520120948
Authority: CN
Inventors: 郑祐丞
Original assignee: Innolux Shenzhen Co Ltd; Innolux Display Corp
Current assignee: Innolux Shenzhen Co Ltd; Innolux Corp
Priority date: 2005-12-22
Filing date: 2005-12-22
Publication date: 2007-01-24
Anticipated expiration: 2015-12-22

Abstract

The utility model relates to a backlight module, including a light source and a light guide plate, wherein the light guide plate includes an emergent light face and at least one side face jointed with the emergent light face, the side face is provided with groove, and the light source is fixed inside the groove. The backlight module and the liquid crystal display (LCD) using the backlight module can prevent the lamp of the light source from breaking during impact test.

Description

Module backlight and LCD

[technical field]

The utility model is the LCD about a kind of module backlight and this module backlight of use.

[background technology]

Because the liquid crystal itself in the panel of LCD does not have the characteristics of luminescence, therefore for reaching display effect, one light supply apparatus is provided must for the LCD panel, as module backlight, function is to provide the area source that brightness is abundant and be evenly distributed to panel of LCD.Light guide plate is the key component of module backlight, must possess the good optical design, and the light that makes light guide plate can guide light source to send converts brightness to and colourity all can reach necessarily required area source.

A kind of module backlight of prior art such as Fig. 1 and shown in Figure 2, this module 1 backlight comprise metal backing 11, U-shaped reflector plate 13, light sources 14, light guide plate 16, the reflecting plate 15 that is positioned at light guide plate 16 belows, the diffusion sheet 17 that is positioned at light guide plate 16 tops with supporting part 111 and mould frame 12.Light guide plate 16 is positioned on this metal backing 11, and this light guide plate 16 comprises side 162, and this side 162 is provided with projection 163, and this projection 163 is positioned at the both sides of the supporting part 111 of metal backing 11.U-shaped reflector plate 13 is positioned at metal backing 11, and the incidence surface 161 of relative light guide plate 16.Light sources 14 is positioned at U-shaped reflector plate 13, and light source holder 142 is fixed on light source 141 in this U-shaped reflector plate 13, and O shape ring 143 is enclosed within on the light source 141, with protection light source 141.Mould frame 12 and combine, form the space that holds U-shaped reflector plate 13, light sources 14, reflecting plate 15, light guide plate 16 and diffusion sheet 17 with metal backing 11.

The LCD MODULE of module backlight 1 that adopts the prior art in the shock-testing process, light guide plate 16 and metal backing 11 power that is hit, generation acting force and reacting force between metal backing 11 and the light guide plate 16.Because the projection 163 of light guide plate 16 is positioned at supporting part 111 both sides of metal backing 11, produce acting force and reacting force between the projection 163 of light guide plate 16 and the supporting part 111 of metal backing 11, supporting part 111 may ream the projection 163 of light guide plate 16, thereby, 16 light source holder 142 carryings of light guide plate this moment by light sources 14, deformation takes place in light source holder 142, and light guide plate 16 may hit light source 141, causes the fluorescent tube of light source 141 to break.

[utility model content]

In order to overcome the defective that prior art backlight liquid crystal display module causes fluorescent tube to break when the shock-testing, be necessary to provide the module backlight that can prevent that fluorescent tube from breaking.

Also be necessary to provide a kind of LCD of using above-mentioned module backlight.

A kind of module backlight, it comprises light source and light guide plate, and this light guide plate comprises an exiting surface and side at least one and that this exiting surface joins, and this side is provided with groove, and this light source is fixed in this groove.

A kind of LCD, it comprises a module backlight, and this module backlight comprises light source and light guide plate, and this light guide plate comprises an exiting surface and side at least one and that this exiting surface joins, and this side is provided with groove, and this light source is fixed in this groove.

Compared with prior art, the light guide plate side of above-mentioned module backlight and LCD is provided with groove, this light source is fixed in this groove, therefore this LCD is when shock-testing: when light guide plate moves, the light source that is fixed in the groove moves with light guide plate, thereby the phenomenon that light guide plate hits the light source fluorescent tube can not occur, thereby can prevent that fluorescent tube from breaking.

[description of drawings]

Fig. 1 is the exploded view of a kind of prior art module backlight.

Fig. 2 is the cut-open view of module backlight shown in Figure 1.

Fig. 3 is the utility model LCD synoptic diagram.

Fig. 4 is the exploded view of the utility model module first embodiment backlight.

Fig. 5 is the cut-open view of the utility model module first embodiment backlight.

Fig. 6 is the cut-open view of the utility model module second embodiment backlight.

Fig. 7 is the cut-open view of the utility model module the 3rd embodiment backlight.

Fig. 8 is the cut-open view of the utility model module the 4th embodiment backlight.

Fig. 9 is the light guide plate of the utility model module the 5th embodiment backlight and the synoptic diagram of light source.

Figure 10 is the light guide plate of the utility model module the 6th embodiment backlight and the synoptic diagram of light source.

Figure 11 is the light guide plate of the utility model module the 7th embodiment backlight and the synoptic diagram of light source.

Figure 12 is the synoptic diagram of the light guide plate of the utility model module the 8th embodiment backlight.

[embodiment]

The utility model LCD as shown in Figure 3, this LCD 200 comprises a display panels 210 and a module 220 backlight of stacked setting, this module 220 backlight is shown in following embodiment.

First embodiment of module backlight of the present utility model such as Fig. 4 and shown in Figure 5, this module 3 backlight comprise backboard 31, the light sources 33 with inner bottom surface 311, the light guide plate 34 with exiting surface 348, source reflection sheet 35, are positioned at the reflector plate 36 of these light guide plate 34 belows, are positioned at the scatter plate 37 of these light guide plate 34 tops and mould frame 32.Light guide plate 34 is positioned on the inner bottom surface 311 of backboard 31.This light sources 33 comprises two parallel linear light sources 331, is fixed in the light source holder 332 at linear light source 331 two ends, is placed in the O shape ring 333 of this linear light source 331 and the high-low pressure lead 334 that links to each other with this linear light source 331.This light sources 33 is positioned at first groove 342 of the side 341 of light guide plate 34.Be defined as the length direction of this first groove 342 with the direction of the xsect of vertical this first groove 342, this length direction is parallel to this exiting surface 348.This first groove 342 is provided with the hole 343 that is relatively fixed up and down, and the two ends of these fixed orifice 343 corresponding these line sources 331, and the light source holder 332 that is fixed on linear light source 331 two ends is fixed in this fixed orifice 343.This first groove 342 further is provided with the groove 344 that is relatively fixed up and down, and this O shape ring 333 is fixed on this pickup groove 344.This source reflection sheet 35 is attached to the outside of light sources 33.Mould frame 32 and combine, form the space that holds source reflection sheet 35, light sources 33, reflector plate 36, light guide plate 34 and scatter plate 37 with backboard 31.

Second embodiment of module backlight of the present utility model as shown in Figure 6, the difference of this embodiment and first embodiment is: the side 541 of this light guide plate 54 further is provided with second groove 546, and this second groove 546 is positioned at a side of this first groove 542; High-low pressure lead 534 is positioned at this second groove 546.Second groove 546 can adjacent reflector plate 56 also can adjacent scatter plate 57.

The 3rd embodiment of module backlight of the present utility model as shown in Figure 7, the difference of this embodiment and second embodiment is that the side of this light guide plate 64 further is provided with the 3rd groove 647, and second groove 646 and the 3rd groove 647 lay respectively at the both sides of first groove 642, promptly second groove 646 can be positioned at 67 of first groove 642 and scatter plates, and the 3rd groove 647 is positioned at the opposite side of first groove 642, and promptly this first groove 642 is between second groove 646 and the 3rd groove 647.High-low pressure lead 634 lays respectively in second groove 646 and the 3rd groove 647.High-low pressure lead 634 lays respectively in second groove 646 and the 3rd groove 647, is convenient to sunken cord and check circuit.

The 4th embodiment of module backlight of the present utility model as shown in Figure 8, the difference of this embodiment and the 3rd embodiment is: be arranged on second groove 746 of side 741 and the below that the 3rd groove 747 all is positioned at first groove 742.

The 5th embodiment of module backlight of the present utility model as shown in Figure 9, this embodiment is with the difference of first embodiment: light guide plate 84 comprises a pair of relative side 841, and in each side 841 first groove 842 is set respectively; Hold two linear light sources 831 respectively in each first groove 842.This embodiment can improve the briliancy of the LCD MODULE that adopts this module backlight than first embodiment.

The 6th embodiment of module backlight of the present utility model as shown in figure 10, the difference of this embodiment and the 5th embodiment is: light guide plate 94 comprises four sides 941, and each side 941 is respectively arranged with first groove 942, two L shaped light sources 931 lay respectively in first groove 942 of four sides 941, and two L shaped light sources 931 surround a rectangle.This embodiment reduces number of light sources than the 5th embodiment, thereby cost-saved.

The 7th embodiment of module backlight of the present utility model as shown in figure 11, the difference of this embodiment and the 6th embodiment is: a U-shaped light source 1031 and a linear light source 1032 lay respectively in first groove 1042 of side 1041.

The 8th embodiment of module backlight of the present utility model as shown in figure 12, the difference of this embodiment and first embodiment is: first groove 1142 of this light guide plate 114 is obliquely installed in the side 1141, the i.e. length direction of this first groove 1142 and exiting surface 1148 θ at angle, this angle θ is less than 90 degree.The light guide plate 8 of this embodiment can comprise two relative side or four sides.

The side of the light guide plate of module backlight of the present utility model is provided with the groove that is used to hold line source, line source is placed in this groove, and the two ends of light source holder static line light source, this light source holder is fixed on the fixed orifice of this groove, thereby the LCD MODULE that adopts this module backlight is when shock-testing, can avoid light guide plate to hit the phenomenon of line source, thus the phenomenon that the fluorescent tube that can avoid line source breaks because of the bump of light guide plate in the shock-testing process.

It is described that the utility model module backlight is not limited to above-mentioned embodiment, and for example: this first groove 342,442,542,642,742,842,942,1042 and 1,142 second grooves 546 and the 3rd groove 647,747 can millings or the mode of ejection formation forms; This backboard 311 can be metal backing, as the aluminium backboard; The light guide plate 84,94,104 of the 5th embodiment to the eight embodiments and 114 side 841,941,1041 and 1141 can further be provided for holding second groove and the 3rd groove of light source lead.

Claims

1. module backlight, it comprises light source and light guide plate, and this light guide plate comprises an exiting surface and side at least one and that this exiting surface joins, and it is characterized in that: this side is provided with groove, and this light source is fixed in this groove.

2. module backlight as claimed in claim 1, it is characterized in that: this module backlight further comprises at least two light source holders, this light source holder is fixed on the light source, this groove setting at least two respectively with the corresponding fixed orifice of this two light sources holder, this light source holder is fixed in this fixed orifice.

3. module backlight as claimed in claim 1 is characterized in that: the length direction of this groove is parallel to this exiting surface.

4. module backlight as claimed in claim 1 is characterized in that: this light guide plate comprises that further one is provided with the side of groove, and this two side faces is for being oppositely arranged.

5. module backlight as claimed in claim 1 is characterized in that: this light source is a line source.

6. module backlight as claimed in claim 5 is characterized in that: this line source is the linear light source.

7. module backlight as claimed in claim 5 is characterized in that: this light guide plate further comprises three sides that are provided with groove.

8. module backlight as claimed in claim 7 is characterized in that: this line source comprises L shaped light source, and this L shaped light source is positioned at the flute of two adjacent sides.

9. module backlight as claimed in claim 7 is characterized in that: this line source comprises U-shaped light source and linear light source, and this U-shaped light source is positioned at the groove of three sides, and this linear light source is positioned at the groove of remaining side.

10. LCD, it comprises a module backlight, it is characterized in that: this module backlight each described module backlight that is claim 1 to the claim 9.