CN203431600U - Face-shaped light source device, display unit and electronic device with face-shaped light source device - Google Patents
Face-shaped light source device, display unit and electronic device with face-shaped light source device Download PDFInfo
- Publication number
- CN203431600U CN203431600U CN201320374466.9U CN201320374466U CN203431600U CN 203431600 U CN203431600 U CN 203431600U CN 201320374466 U CN201320374466 U CN 201320374466U CN 203431600 U CN203431600 U CN 203431600U
- Authority
- CN
- China
- Prior art keywords
- lgp
- light
- light source
- point source
- inclined plane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The utility model provides a face-shaped light source device which comprises a plurality of point-shaped light sources and a light guiding plate. Light from the point-shaped light sources is emitted in from an incident plane and is emitted out from an emitting-out face of the light guiding plate, an irradiated objected is irradiated, the light guiding plate is in the shape that two corners of one side face of a rectangular plate are cut off, the side face is a side face in the length direction of the light guiding plate, and two end portions formed after the two corners are cut off are provided with oblique faces which are oblique relative to the appearance of the light guiding plate, perpendicular lines which pass through any points on the two end portions and are perpendicular to the oblique faces, and top points which penetrate through the light guiding plate and are placed on the opposite-angle positions opposite to the oblique faces respectively. According to the face-shaped light source device, the evenness of light from the point-shaped light sources in the whole light guiding plate can be improved, and the diffusion efficiency of the light in the whole light guiding plate can be improved.
Description
Technical field
The utility model relates to and a kind ofly utilizes the surface light source apparatus that point source of light irradiates and the display unit with this surface light source apparatus, and the electronic installation with this display unit.
Background technology
Conventionally, in the electronic installation as thermoregulator, television set etc., all there is liquid crystal indicator.For example, in thermoregulator, liquid crystal indicator is configured in to a side above of thermoregulator, this liquid crystal display can be used for displays temperature control object Current Temperatures and estimate to heat to reach by heater etc. the target temperature etc. of regulation.
The liquid crystal indicator that becomes known for thermoregulator etc. is not the luminous self-luminous display device of display part itself, in these non-self-luminous display devices, needs to install the surface light source apparatus of backlight etc. on the back side of display part.Surface light source apparatus has side light source mode or directly-below type mode, wherein, in the surface light source apparatus of side light source mode, conventionally use LGP by the photoconduction from light source to desired direction.By using the surface light source apparatus of LGP, make from linear light source or the light emitting diode of fluorescent tube etc. (following, referred to as LED) etc. the light that penetrates of point source of light in LGP internal reflection, and produce diffusion by being arranged on dot pattern in LGP etc., penetrate planar light.
In the past, in the surface light source apparatus at the point source of light that uses LED etc. as light-emitting component, in the mode shown in Fig. 5, configure opposite to each other a plurality of LED with the end face of a side of LGP, improved the brightness of display frame.The light penetrating from each LED, the inside incident from the end face of LGP to LGP respectively, while spread and be radial spread in the inside of LGP.Yet, as shown in Figure 5, in this case, can be in the side near the LED light source of LGP, between a plurality of LED and the position at LED two ends produce the Delta Region that light that LED penetrates can not arrive.Therefore, at the surface light source apparatus by utilizing this LGP when such as illuminated body irradiation light such as liquid crystal displays, at illuminated body, produce the dark part that is not irradiated to light, the directive property of the light projecting from the LED as light source is higher, and the part of above-mentioned dark is larger.Thereby in the part that alternately occurs becoming clear near a side of LED light source and dark part, the brightness of flat light source is larger, the difference between this light and shade is just more obvious, can not on liquid crystal indicator, realize by LED demonstration uniformly.
Conventionally, LGP to illuminated body irradiation light has and the corresponding shape of illuminated body, in the situation that illuminated body is rectangle, LGP also has rectangular shape, as shown in Figure 5, because the side with long limit at LGP disposes a plurality of LED, so it is very large to occur that on illuminated body the region of dark part accounts for the ratio of whole illuminated body, this ratio is larger, and the uniformity of the demonstration of display is poorer.And in this case, the light penetrating from LED is subject to the restriction of length of the minor face of LGP, only propagates very short distance in LGP, therefore, does not make full use of the diffusion function of the light of LED, the utilization ratio of the light that LED is penetrated is very low.A plurality of LED are being configured on the minor face of LGP, are having too the above-mentioned brightness irregularities of display integral body and the low problem of the diffuser efficiency of light.
Utility model content
The utility model is to propose in view of the above problems, and the purpose of this utility model is, provides a kind of and can improve the uniformity of propagating from the illumination light of light source and the surface light source apparatus that improves the diffuser efficiency of illumination light on whole of LGP.
The utility model provides a kind of surface light source apparatus, and it has: a plurality of point source of lights, and LGP, makes to inject from the plane of incidence from the light of a plurality of described point source of lights, and penetrates from the outgoing plane of described LGP, to illuminated body, irradiates; Described LGP forms the shape in two bights that cut out a side that is positioned at rectangular plate, described side is the side in the longitudinal direction of described LGP, after cutting out two described bights, formed both ends have respectively the inclined plane with respect to the profile inclination of described LGP, through any point on the inclined plane at described both ends and perpendicular to the vertical line on described inclined plane, through the summit of the diagonal position relative with described inclined plane of described LGP.Adopt this surface light source apparatus can improve light from the point source of light uniformity in whole LGP, and improve the diffuser efficiency of light in whole LGP.
In the utility model, preferably, a plurality of described point source of lights are configured in respectively and position in opposite directions, the inclined plane at described both ends, and the optical axis of the light penetrating from described point source of light is vertical with described inclined plane.
In the utility model, preferably, the more described corresponding position on the inclined plane with described both ends, disposes respectively described point source of light.
The utility model provides another kind of surface light source apparatus, and it has: a plurality of point source of lights, and LGP, makes to inject from the plane of incidence from the light of a plurality of described point source of lights, and penetrates from the outgoing plane of described LGP, to illuminated body, irradiates; Described LGP forms the shape in two bights that cut out a side that is positioned at rectangular plate, described side is the side in the longitudinal direction of described LGP, after cutting out two described bights, formed both ends have respectively the inclined plane with respect to the profile inclination of described LGP, a plurality of described point source of lights are configured in respectively and position in opposite directions, the inclined plane at described both ends, and are configured to respectively the optical axis of the light that penetrates from described point source of light through the summit of the diagonal position relative with described point source of light of described LGP.Adopt this surface light source apparatus also can improve light from the point source of light uniformity in whole LGP, and improve the diffuser efficiency of light in whole LGP.
In the utility model, preferably, there are two described point source of lights, in position in opposite directions, the inclined plane with described both ends, respectively dispose a described point source of light.
In the utility model, preferably, described point source of light is light emitting diode.
The utility model also provides a kind of display unit, it has: liquid crystal display, there is display part, optics control assembly, be configured in a side below of described liquid crystal display, reflection framework, be configured in a side below of described optics control assembly, described surface light source apparatus, be configured in described reflection framework after, described reflection framework is surrounded the part of peripheral part for the LGP of described surface light source apparatus, reflector plate, be configured in a side below of described surface light source apparatus, LCD Monitor Board; A plurality of described point source of light of described surface light source apparatus is installed on described LCD Monitor Board, and the illumination of penetrating from a plurality of described point source of lights is mapped to the described display part of described liquid crystal display.
In the utility model, preferably, at described liquid crystal display, control substrate the electrode adjacent with the minor face of described LGP is installed.
The utility model also provides a kind of electronic installation, and it comprises: the housing of described display unit and accommodating described display unit.
In the utility model, preferably, the side of described housing and described reflection framework are adjacent.
In the utility model, preferably, described electronic installation is thermoregulator.
Accompanying drawing explanation
Fig. 1 means the exploded perspective view of the structure of liquid crystal display of the present utility model.
Fig. 2 is the front view that schematically shows the surface light source apparatus of the first embodiment of the present utility model.
Fig. 3 means the inclined plane at both ends of the LGP in surface light source apparatus and the size of the angle between the minor face extended line of LGP and the figure of irradiation to the relation of the brightness of the light of display unit.
Fig. 4 is the front view that schematically shows the surface light source apparatus of the second embodiment of the present utility model.
Fig. 5 means the front view of the surface light source apparatus of prior art.
Wherein, description of reference numerals is as follows:
1 liquid crystal display
2,2a surface light source apparatus
21,22 light emitting diodes (LED)
23,23a LGP
24,24a both ends
5 liquid crystal displays
6 diffusion sheets
7 reflection frameworks
8 reflector plates
9 liquid crystal displays are controlled substrate
The specific embodiment
Below, with reference to accompanying drawing, for concrete embodiment of the present utility model, describe.
First, for the display unit with surface light source apparatus, describe, this display unit can be a kind of liquid crystal display, but is not limited to this.Fig. 1 means the exploded perspective view of the structure of liquid crystal display 1 of the present utility model.
Specifically, this liquid crystal display 1 has: the liquid crystal display 5 being rectangle, has rectangular display part; Optics control assembly, is configured in the side below of liquid crystal display 5; Reflection framework 7, be configured in the side below of optics control assembly; Surface light source apparatus 2, be configured in reflection framework 7 after, the part that reflection framework 7 is surrounded the peripheral part of the LGP 23 in surface light source apparatus 2; Reflector plate 8, is configured in the side below of surface light source apparatus 2.
Wherein, liquid crystal display 5 can use the display panels of the birefringence of having applied liquid crystal, and this liquid crystal display 5 is by controlling the orientation of liquid crystal, by or blocking irradiate the irradiation light to this liquid crystal display 5, come display text and figure.
In the present embodiment, optics control assembly is diffusion sheet 6, but be not limited to this, optics control assembly can select the multiple parts such as reflector plate to form by diffusion sheet, prismatic lens, polarisation, be used for from the light of light source ejaculation, giving orientation to irradiating to the light of liquid crystal display 5, uniform irradiation light is provided to liquid crystal display 5.According to different objects, this optics control assembly can only consist of a kind of member, also can adopt the combination of a plurality of or multiple member, for example, adopts two prismatic lenses and diffusion sheet by the square crossing of stack component prism to form.
Surface light source apparatus 2 has point source of light and rectangular LGP 23, in the present embodiment, adopt two light emitting diodes (following, referred to as LED) 21,22 to be used as point source of light, on the outer peripheral face of LGP 23, there is the jut for engaging with other member.Concrete content describes in detail in the back.
Reflection framework 7 forms the photo frame shape with peristome, and when assembling liquid crystal display 1, the mode of the surface light source apparatus of a side below that is disposed at reflection framework 7 to surround arranges.Point source of light LED21,22 is configured in the position of the peripheral part of this LGP 23, from point source of light LED21,22 light, in LGP 23, propagates.When a part of light in LGP 23 interior propagation will spill to outside from the peripheral part of LGP 23, by being reflected the inwall of the peristome of framework 7, this part of light is reflected, make this part of light again incide LGP 23, carry out diffuse reflection, to guarantee to irradiate the light quantity to liquid crystal display 5.
Similarly, the reflector plate 8 of a side below that is configured in the LGP 23 of surface light source apparatus is also led back to LGP 23 1 sides by a part of light going out to reflector plate 8 one side leakages from LGP 23, to guarantee to irradiate the light quantity to liquid crystal display 5.
This liquid crystal display 1 can also have liquid crystal display in a side below of reflector plate 8 and control substrate 9, at this liquid crystal display, control the electrode that substrate 9 is provided with the connecting fluid crystal display 5 adjacent with the minor face of LGP, and for operating the action button etc. of this display unit 1.Two LED21,22 as light source of surface light source apparatus 2 can be mounted on liquid crystal display and control substrate 9, when by respectively the forming structure and fit together of liquid crystal display 1, LED21,22 is arranged in and position in opposite directions, the incident side of the LGP 23 of surface light source apparatus 2 just.
Then, the surface light source apparatus 2 for present embodiment is described in detail.
[the first embodiment]
Fig. 2 is the front view that schematically shows the surface light source apparatus of the first embodiment of the present utility model.
The surface light source apparatus of present embodiment has two LED(light emitting diodes as point source of light) 21,22 and rectangular LGP 23, this LGP 23 makes to inject from the side of LGP 23 from two LED21 as point source of light, 22 light, and penetrate from the outgoing plane of LGP 23, to illuminated body, irradiate.Wherein, LED21,22 preferably adopts the LED of the high brightness that light quantity is many, and LGP 23 can consist of the synthetic resin of acrylic resin or Merlon etc., but is not limited to this.This LGP 23 forms the shape in two bights that cut out the side in the longitudinal direction that is positioned at plate, by cutting out two bights, forms 24，Gai both ends, both ends 24 and has respectively the inclined plane that tilts with respect to the profile of this LGP 23.
Between the extended line of the inclined plane at the both ends 24 of LGP 23 and the minor face of LGP 23, form angle theta, in the utility model, angle theta between the extended line of the inclined plane of mentioning and the minor face of LGP all refers to, with 90, spends the angle that deducts the acute angle between the normal on inclined plane and the extended line of the minor face of LGP and obtain.On the inclined plane at both ends 24, have respectively some X1, X2, process point X1, X2, perpendicular to vertical line L1, the L2 on this inclined plane, pass respectively summit B1, the B2 of the diagonal position relative with inclined plane of LGP 23.As two LED21,22 of light source be configured to the inclined plane at both ends 24 in opposite directions, and vertical with two inclined planes respectively from the optical axis of two LED21,22 light that penetrate.
When LED21,22 is when luminous, from LED21,22 light that penetrate, from both ends, the inside of LGP 23 is injected on 24 inclined plane respectively, and propagates in rectangular LGP 23.The light penetrating, in the interior abundant diffusion of LGP 23, diffuses to the scope of whole LGP 23.Thus, at LED21,22 when luminous, near LED21, a side of 22, the position in two LED1 of LGP 23 and the both sides of LED2, by very not little from the dark part A of LED21,22 irradiations that penetrate (light is not propagated in LGP 23).
Fig. 3 means the size and the graph of a relation of irradiation to the brightness of the light of the display part of liquid crystal display 5 of the angle theta between the inclined plane at both ends 24 of the LGP 23 in surface light source apparatus and the extended line of the minor face of LGP 23, in Fig. 3, transverse axis represents that the angle theta between the inclined plane at both ends 24 of LGP 23 and the extended line of the minor face of LGP 23 is (following, referred to as angle theta), the longitudinal axis represents from LED21, the mean flow rate of the light irradiating is afterwards propagated and spread to the light penetrating in 22 in LGP 23, irradiate the brightness to the light of the display part of liquid crystal display 5, the standard value of the brightness of light is made as to 1.
In the present embodiment, the long edge lengths of LGP 23 is 44.6mm, and the bond length of LGP 23 is 16.5mm, but the length of LGP 23 and width are not limited to this.Impact for the size of angle theta on the brightness of light, inventor has obtained result as shown in Figure 3 by experiment.At the LED21 from as light source, 22, irradiate identical to the light quantity of LGP 23, and the optical axis of the light that penetrate from LED21,22 is always the situation vertical with the inclined plane at the both ends 24 of LGP, as can be seen from Figure 3, when the angle of angle theta is about 20～40 while spending, the brightness of light all can reach more than 0.8.Hence one can see that, in the angle of angle theta, be in the scopes of about 20～40 degree time, the diffuser efficiency of the light irradiating from light source in LGP 23 is very high, light is irradiated to the brightness of the light of the display part of liquid crystal display 5 after the interior generation diffuse reflection of LGP 23 very high.From Fig. 3, it can also be seen that, when the angle of angle theta is about 25～38 while spending, from LED21, the light penetrating in 22 is propagated and is spread irradiation afterwards to the brightness of the light of the display part of liquid crystal display 5 in LGP 23, all can reach more than 0.9, especially, when the angle of angle theta is about 36 while spending, now, two LED21, the optical axis of 22 light that penetrate passes the summit B1 of the diagonal position relative with inclined plane of LGP 23 just, B2, two LED21 namely, 22 are configured in and an X1 just, the position that X2 is corresponding, from LED21, the irradiation penetrating in 22 reaches standard value to the brightness of the light of the display part of liquid crystal display 5 and is 1, now, the diffuser efficiency of light reaches the highest, make light almost break-even irradiation to liquid crystal display 5.
Therefore, adopt this surface light source apparatus 2 to carry out irradiating liquid crystal display 5, even at the dark part A of the interior generation of LGP 23, but because produced dark part A is very little, can whole illuminating effect be exerted an influence hardly, there will not be thus the phenomenon that becomes very dark in the position of LED21,22 both sides, thereby effectively improved the homogeneity of the light penetrating from the integral body of surface light source apparatus 2.And due in this surface light source apparatus 2, the diffuser efficiency of light is very high, so only utilize the LED21,22 of the more high brightness of two light quantities can make to irradiate the brightness that reaches standard to the mean flow rate of the light of the display part of liquid crystal display 5.In addition, adopt this surface light source apparatus 2 can make the more miniaturization of whole liquid crystal display 1, and provide cost savings.
[the second embodiment]
The structure of the surface light source apparatus 2a of the second embodiment and the surface light source apparatus 2 of the first embodiment is basic identical, difference is, angle between the extended line of the inclined plane of the both ends 24a of LGP 23a and the minor face of LGP 23a is θ a, the optical axis of the light that penetrate from LED21,22 is not vertical with the inclined plane of the both ends 24a of LGP 23a, as long as be configured to from the optical axis of LED21,22 light that penetrate through LGP 23a and summit B1, B2 LED21,22 relative diagonal positions.
As shown in Figure 4, when LED21,22 is when luminous, from LED21,22 light that penetrate, from the inclined plane of both ends 24a, inject respectively the inside of LGP 23a, and towards the direction of the summit of LGP 23a B1, B2, propagate respectively in rectangular LGP 23a.The light penetrating is diffusion fully in LGP 23a, diffuses to the scope of whole LGP 23a.At LED21,22 when luminous, near LED21, a side of 22, position in two LED21 of LGP 23 and the both sides of LED22, not by very little from LED21, the 22 light-struck dark part A that penetrate, can whole illuminating effect be exerted an influence hardly, thereby effectively improved the homogeneity of the light penetrating from the integral body of surface light source apparatus 2a.With the first embodiment similarly, due in this surface light source apparatus 2a, the diffuser efficiency of light is very high, so only utilize the LED21,22 of the more high brightness of two light quantities can make to irradiate the brightness that reaches standard to the mean flow rate of the light of the display part of liquid crystal display 5.In addition, adopt this surface light source apparatus 2a also can make the more miniaturization of whole liquid crystal display 1, and save cost.
Like this, when not irradiating to the display part of liquid crystal display 5 from point source of light LED21,22 light that penetrate with losing, by using surface light source apparatus 2, the 2a of first, second embodiment, make the brightness of liquid crystal display 5 on whole display part even, can not produce dark place, thereby can more clearly confirm the figure or the word that show on display part.
Because, above-mentioned liquid crystal display 1 has that the light quantity of irradiating to display part is even, brightness is high and volume is little, low-cost etc. feature, thus above-mentioned liquid crystal display be suitable for as thermoregulator such electronic installation in.
Claims (11)
1. a surface light source apparatus, has:
A plurality of point source of lights,
LGP, makes to inject from the plane of incidence from the light of a plurality of described point source of lights, and penetrates from the outgoing plane of described LGP, to illuminated body, irradiate,
It is characterized in that,
Described LGP forms the shape in two bights that cut out a side that is positioned at rectangular plate, described side is the side in the longitudinal direction of described LGP, after cutting out two described bights, formed both ends have respectively the inclined plane with respect to the profile inclination of described LGP
On the inclined plane at described both ends, exist respectively a bit, through this point and perpendicular to the vertical line on described inclined plane, through the summit of the diagonal position relative with described inclined plane of described LGP.
2. surface light source apparatus as claimed in claim 1, is characterized in that,
A plurality of described point source of lights are configured in respectively and position in opposite directions, the inclined plane at described both ends, and the optical axis of the light penetrating from described point source of light is vertical with described inclined plane.
3. surface light source apparatus as claimed in claim 2, is characterized in that,
More described corresponding position on the inclined plane with described both ends, disposes respectively described point source of light.
4. a surface light source apparatus, has:
A plurality of point source of lights,
LGP, makes to inject from the plane of incidence from the light of a plurality of described point source of lights, and penetrates from the outgoing plane of described LGP, to illuminated body, irradiate,
It is characterized in that,
Described LGP forms the shape in two bights that cut out a side that is positioned at rectangular plate, described side is the side in the longitudinal direction of described LGP, after cutting out two described bights, formed both ends have respectively the inclined plane with respect to the profile inclination of described LGP
A plurality of described point source of lights are configured in respectively and position in opposite directions, the inclined plane at described both ends, and are configured to respectively the optical axis of the light that penetrates from described point source of light through the summit of the diagonal position relative with described point source of light of described LGP.
5. the surface light source apparatus as described in claim 1～4, is characterized in that,
There are two described point source of lights, in position in opposite directions, the inclined plane with described both ends, respectively dispose a described point source of light.
6. the surface light source apparatus as described in any one in claim 1～4, is characterized in that,
Described point source of light is light emitting diode.
7. a display unit, is characterized in that,
Have:
Liquid crystal display, has display part,
Optics control assembly, is configured in the side below of described liquid crystal display,
Reflect framework, be configured in a side below of described optics control assembly,
Surface light source apparatus in claim 1～6 described in any one, be configured in described reflection framework after, described reflection framework is surrounded described surface light source apparatus,
Reflector plate, is configured in the side below of described surface light source apparatus,
LCD Monitor Board;
A plurality of described point source of light of described surface light source apparatus is installed on described LCD Monitor Board, and the illumination of penetrating from a plurality of described point source of lights is mapped to the described display part of described liquid crystal display.
8. display unit as claimed in claim 7, is characterized in that,
At described liquid crystal display, control substrate the electrode adjacent with the minor face of described LGP is installed.
9. an electronic installation, is characterized in that,
Comprise:
Display unit described in claim 7 or 8,
The housing of accommodating described display unit.
10. electronic installation as claimed in claim 9, is characterized in that,
The side of described housing and described reflection framework are adjacent.
11. electronic installations as described in claim 9 or 10, is characterized in that,
Described electronic installation is thermoregulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320374466.9U CN203431600U (en) | 2013-06-27 | 2013-06-27 | Face-shaped light source device, display unit and electronic device with face-shaped light source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320374466.9U CN203431600U (en) | 2013-06-27 | 2013-06-27 | Face-shaped light source device, display unit and electronic device with face-shaped light source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203431600U true CN203431600U (en) | 2014-02-12 |
Family
ID=50060636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320374466.9U Expired - Lifetime CN203431600U (en) | 2013-06-27 | 2013-06-27 | Face-shaped light source device, display unit and electronic device with face-shaped light source device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203431600U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717697A (en) * | 2014-12-04 | 2016-06-29 | 南京瀚宇彩欣科技有限责任公司 | Backlight module and display device |
| CN107678206A (en) * | 2016-08-02 | 2018-02-09 | 三星显示有限公司 | Light emission module and the display device including light emission module |
-
2013
- 2013-06-27 CN CN201320374466.9U patent/CN203431600U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717697A (en) * | 2014-12-04 | 2016-06-29 | 南京瀚宇彩欣科技有限责任公司 | Backlight module and display device |
| CN107678206A (en) * | 2016-08-02 | 2018-02-09 | 三星显示有限公司 | Light emission module and the display device including light emission module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8287172B2 (en) | Planar illumination device | |
| EP3204822A2 (en) | Direct view display device and light unit for direct view display device | |
| CN106019709A (en) | Liquid crystal module and liquid crystal display screen | |
| WO2013185395A1 (en) | Led light strip and side-type backlight module using same | |
| US8545048B2 (en) | LED illumination structure without light guide plate | |
| US9028128B2 (en) | Side-edge backlight module | |
| JP2006210140A (en) | Light guide plate diffusing light uniformly | |
| CN106896579A (en) | Backlight module and liquid crystal display device | |
| TWM466278U (en) | Thinning LED direct-type backlight module | |
| RU2010143900A (en) | LIGHTING DEVICE, DISPLAY DEVICE AND TELEVISION RECEIVER | |
| CN103048727B (en) | LGP (Light Guide Plate), backlight source and LCD (Liquid Crystal Display) device | |
| CN203431600U (en) | Face-shaped light source device, display unit and electronic device with face-shaped light source device | |
| CN204285310U (en) | Optical lens, lamp bar and down straight aphototropism mode set | |
| US9405149B2 (en) | Direct backlight module | |
| CN109976037B (en) | Lateral backlight source and display device thereof | |
| WO2014067172A1 (en) | Light guide plate and backlight module using same | |
| CN101206333A (en) | Back light module unit and LCD | |
| US20140119056A1 (en) | Light Guide Plate and Backlight Module Using the Light Guide Plate | |
| CN102182968A (en) | Novel LED (light-emitted diode) backlight module | |
| CN202057825U (en) | Light guide plate and backlight module | |
| US10012867B2 (en) | Liquid crystal devices (LCDS) and the backlight modules thereof | |
| US20130336000A1 (en) | Led light bar and side-edge backlight module using same | |
| CN203442607U (en) | Edge-in-type backlight structure and liquid crystal module | |
| CN104565995A (en) | Backlight module | |
| CN101694286B (en) | Light guide plate and backlight module using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |
|
| CX01 | Expiry of patent term |