CN202675079U - Edge-type light emitting diode (LED) backlight module - Google Patents
Edge-type light emitting diode (LED) backlight module Download PDFInfo
- Publication number
- CN202675079U CN202675079U CN2012203359775U CN201220335977U CN202675079U CN 202675079 U CN202675079 U CN 202675079U CN 2012203359775 U CN2012203359775 U CN 2012203359775U CN 201220335977 U CN201220335977 U CN 201220335977U CN 202675079 U CN202675079 U CN 202675079U
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- backlight module
- light
- lgp
- light source
- light guide
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Abstract
The utility model provides an edge-type light emitting diode (LED) backlight module. The edge-type LED backlight module comprises a light guide plate, a reflector arranged on the back of the light guide plate, a diffuser plate arranged in front of the light guide plate, at least one brightness enhancement film arranged in front of the diffuser plate, a plurality of LEDs which are opposite to the side face of the light guide plate and of which a light source directly enters the side face of the light guide plate, and a curtain tape which shields the LEDs, wherein a plurality of light guide structures which are linearly arranged along the reflector and can reflect light rays of the LEDs back to the light guide plate are arranged between the reflector and the light guide plate and on the reflector. By the edge-type LED backlight module, the light rays transmitted from the light guide plate can be effectively and positively guided to the light guide plate under the conditions that the LEDs are not increased and the brightness of the LEDs is not improved, so that the utilization rate of the light source is improved, the positive brightness of the edge-type LED backlight module is improved, and the energy-saving effect of reducing the energy consumption is achieved.
Description
Technical field
The utility model relates to a kind of backlight module, and particularly a kind of is the light source pendulum comes the lateral light source of incident LGP at single side backlight module with light emitting diode.
Background technology
In recent years, traditional cathode-ray tube display (CRT monitor that namely is commonly called as) is replaced by liquid crystal display gradually, and main cause is that the amount of radiation that liquid crystal display discharges is far smaller than CRT monitor; In addition, liquid crystal display is in the existing aobvious reduction that lands of this manufacturing cost in several years, and this also is that liquid crystal display becomes one of the main flow reason in electronic product market gradually.
Yet liquid crystal display can be divided into again two parts of liquid crystal panel and backlight module basically, and backlight module can use respectively according to the size dimension of screen the backlight module of direct type backlight module or lateral light source usually.And the backlight module of so-called lateral light source, namely be a kind of with the structural design of light source ornaments at the backlight module of single side incident LGP, the characteristic that has light weight, slim, narrow frame, low power consumption, the backlight module of this lateral light source are the light-source structure design that mobile phone, individual Number position assistant (PDA) or mobile computer more often use.
At first, see also Fig. 1 and Fig. 2, be analysing and observe and enlarged diagram of prior art.It is the backlight module 10 of a lateral light source shown in the figure, include a LGP 50 (Light Guide Plate), one is located at the reflector plate 40 (Reflector) at these LGP 50 back sides, one is located at the diffusion sheet 60 (Diffuser Plate) of these LGP 50 fronts, at least one brightness enhancement film 70 (Brightness Enhancement Film) of being located at these diffusion sheet 60 fronts, a plurality of with respect to this setting of LGP 50 sides and light emitting diode 30 (the Light Emitting Diode of its light source directly to inject these LGP 50 sides, and an anti-dazzling screen 20 (Curtain Tape) that covers these light emitting diode 30 marginal raies and lamp position light LED); Wherein, this reflector plate 40 as shown in Figure 2, in present prior art, the general reflecting layer 41 that all can be provided with at this reflector plate 40 plane, but because its reflectivity is on the low side, and most of light of appearing of this LGP 50 certainly all only can be advanced refraction and migration and caused loss between this reflecting layer 41 on this LGP 50 and plane, and can't positively enter in this LGP and effectively recycled.For this reason, the dealer has proposed following two methods: the quantity that one, increases this light emitting diode 30 in order to solve the problem of the prior art; Two, improve the brightness of this light emitting diode 30.But owing to when implementing with the quantity that increases this light emitting diode 30, will improve production cost, the power consumption that also can increase product simultaneously with reduce product service life, be not inconsistent in fact energy-conservation demand; And if satisfy the display brightness demand and when implementing with the brightness that improves this light emitting diode 30, can cause equally also that above-mentioned production cost improves, power consumption increases with reduce the product problem in service life, be not inconsistent current energy-conservation demand yet.
" LGP and the backlight module " that another prior art such as TW patent announcement are I360689 number; By the patent specification of the prior art and appended accompanying drawing thereof as can be known, the prior art still has following two large defectives on the implementation, that is exactly one, because the light of the prior art is from leaving light source to the incident LGP, nearly all light all can directly be derived the light forward by the reflecting surface (V-type micro-structural) of its Catching-rabbits that establishes immediately, therefore the terminal light of LGP that is positioned at this light source other end will be difficult to arrive and have the problem generation of brightness step-down, therefore must improve the overall brightness of this light source, the problem that this will cause product power consumption to increase, the problem that also will cause this light source to shorten service life; Two, in addition, we can know in can each the embodiment accompanying drawing by the prior art and find out, because the shape of the described LGP of the prior art design very complex, therefore work as it in the manufacturing process of reality, therefore the fraction defective of product will significantly improve, thereby the serious problems that cause production cost to increase occur.
The utility model content
Main purpose of the present utility model, be to solve the problem of above-mentioned prior art, the backlight module of lateral light source described in the utility model is not increasing light emitting diode quantity and is not improving under the prerequisite of this light-emitting diode luminance, the light that LGP can be appeared effectively forward imports this LGP to improve the utilization rate of light source, and then promote the front face brightness of the backlight module of this lateral light source, to reach the energy-saving effect that reduces energy resource consumption.
For reaching above-mentioned purpose, the utility model proposes a kind of backlight module of lateral light source, the backlight module of described lateral light source includes a LGP 50, one is located at the reflector plate 40 at these LGP 50 back sides, one is located at the diffusion sheet 60 of these LGP 50 fronts, at least one brightness enhancement film 70 of being located at these diffusion sheet 60 fronts, a plurality of with respect to this LGP 50 sides arrange and its light source directly to inject the light emitting diode 30 of these LGP 50 sides, an and anti-dazzling screen 20 that covers this light emitting diode 30, it is characterized in that
On this reflector plate 40 between this reflector plate 40 and this LGP 50, be provided with a plurality of arranged in a straight line and these light emitting diode 30 light reflections are returned the light correcting structure 400 of this LGP 50 along this reflector plate 40.
Further, the backlight module of lateral light source of the present utility model, wherein said light correcting structure 400 is for printing opacity and have a reflecting layer 41 between this reflector plate 40 and this light correcting structure 400.
Further, the backlight module of lateral light source of the present utility model, but wherein said reflecting layer 41 is film plating layer or the metal level of reflection ray.
Further, the backlight module of lateral light source of the present utility model, wherein said light correcting structure 400 surfaces have a reflecting layer 401.
Further, the backlight module of lateral light source of the present utility model, but wherein said reflecting layer 401 is film plating layer or the metal level of reflection ray.
Further, the backlight module of lateral light source of the present utility model, the cross section outline of wherein said light correcting structure 400 is geometry or irregularly shaped.
Further, the backlight module of lateral light source of the present utility model, the cross section outline of wherein said light correcting structure 400 are that polygon, half arc or polygon are combined with arc.
The technical scheme of the backlight module of the lateral light source that is proposed by above-mentioned the utility model, compared to prior art as can be known, because the backlight module of lateral light source described in the utility model is not increasing light emitting diode quantity and is not improving under the prerequisite of this light-emitting diode luminance, the light that appears behind this LGP of light incident of this light emitting diode, can the light forward be imported this LGP to improve the utilization rate of light source via the reflection of this light correcting structure, really can promote the front face brightness of the backlight module of this lateral light source, reach the energy-saving effect that reduces energy resource consumption.
Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to restriction of the present utility model.
Description of drawings
Fig. 1 is the cross-sectional schematic of prior art;
Fig. 2 is the local enlarged diagram of Fig. 1;
Fig. 3 is the cross-sectional schematic of the utility model the first preferred embodiment;
Fig. 4 is the cross-sectional schematic of the utility model the second preferred embodiment;
Fig. 5 is the cross-sectional schematic of the utility model the 3rd preferred embodiment.
The specific embodiment
Relevant detailed description of the present utility model and technology contents now just cooperate description of drawings as follows:
Please consult Fig. 3, be the cross-sectional schematic of the utility model the first preferred embodiment.Can be clear that as shown in the figure, the utility model proposes a kind of backlight module 10 of lateral light source, the backlight module 10 of described lateral light source (Edge-type LED Backlight Module) includes a LGP 50 (Light Guide Plate), one is located at the reflector plate 40 (Reflector) at these LGP 50 back sides, one is located at the diffusion sheet 60 (Diffuser Plate) of these LGP 50 fronts, at least one brightness enhancement film 70 (Brightness Enhancement Film) of being located at these diffusion sheet 60 fronts, a plurality of with respect to this setting of LGP 50 sides and light emitting diode 30 (the Light Emitting Diode of its light source directly to inject these LGP 50 sides, LED), an and anti-dazzling screen 20 (Curtain Tape) that covers this light emitting diode 30, it is characterized in that: on this reflector plate 40 between this reflector plate 40 and this LGP 50, be provided with a plurality of arranged in a straight line and these light emitting diode 30 light reflections can be returned the light correcting structure 400 of this LGP 50 along this reflector plate 40; It is characterized in that described light correcting structure 400 for printing opacity and between this reflector plate 40 and this light correcting structure 400, have a reflecting layer 41, but film plating layer or metal level that this reflecting layer 41 is reflection ray.In addition, the cross section outline of this light correcting structure 400 is leg-of-mutton geometry among the figure; Certainly the cross section outline of this light correcting structure 400 also can be irregularly shaped; Or the cross section outline of this light correcting structure 400 is that half arc or polygon are combined with arc.
See also again Fig. 4, be the cross-sectional schematic of the utility model the second preferred embodiment.Can be clear that as shown in the figure, the utility model proposes a kind of backlight module 10 of lateral light source, the backlight module 10 of described lateral light source (Edge-type LED Backlight Module) includes a LGP 50 (Light Guide Plate), one is located at the reflector plate 40 (Reflector) at these LGP 50 back sides, one is located at the diffusion sheet 60 (Diffuser Plate) of these LGP 50 fronts, at least one brightness enhancement film 70 (Brightness Enhancement Film) of being located at these diffusion sheet 60 fronts, a plurality of with respect to this setting of LGP 50 sides and light emitting diode 30 (the Light Emitting Diode of its light source directly to inject these LGP 50 sides, LED), an and anti-dazzling screen 20 (Curtain Tape) that covers this light emitting diode 30, it is characterized in that: on this reflector plate 40 between this reflector plate 40 and this LGP 50, be provided with a plurality of arranged in a straight line and these light emitting diode 30 light reflections can be returned the light correcting structure 400 of this LGP 50 along this reflector plate 40; It is characterized in that described light correcting structure 400 surfaces have a reflecting layer 401, but film plating layer or metal level that this reflecting layer 401 is reflection ray.In addition, the cross section outline of this light correcting structure 400 is leg-of-mutton geometry among the figure; Certainly the cross section outline of this light correcting structure 400 also can be irregularly shaped; Or the cross section outline of this light correcting structure 400 is that half arc or polygon are combined with arc.
At last, see also Fig. 5, be the cross-sectional schematic of the utility model the 3rd preferred embodiment.Can be clear that as shown in the figure, the utility model proposes a kind of backlight module 10 of lateral light source, the backlight module 10 of described lateral light source (Edge-type LED Backlight Module) includes a LGP 50 (Light Guide Plate), one is located at the reflector plate 40 (Reflector) at these LGP 50 back sides, one is located at the diffusion sheet 60 (Diffuser Plate) of these LGP 50 fronts, at least one brightness enhancement film 70 (Brightness Enhancement Film) of being located at these diffusion sheet 60 fronts, a plurality of with respect to this setting of LGP 50 sides and light emitting diode 30 (the Light Emitting Diode of its light source directly to inject these LGP 50 sides, LED), an and anti-dazzling screen 20 (Curtain Tape) that covers this light emitting diode 30, it is characterized in that: on this reflector plate 40 between this reflector plate 40 and this LGP 50, be provided with a plurality of arranged in a straight line and these light emitting diode 30 light reflections can be returned the light correcting structure 400 of this LGP 50 along this reflector plate 40; It is characterized in that described light correcting structure 400 for printing opacity and between this reflector plate 40 and this light correcting structure 400, have a reflecting layer 41, but film plating layer or metal level that this reflecting layer 41 is reflection ray.In addition, the cross section outline of this light correcting structure 400 is that polygon is combined with arc among the figure; Certainly the cross section outline of this light correcting structure 400 also can be geometry or irregularly shaped; Or the cross section outline of this light correcting structure 400 is polygon or half arc.
In sum as can be known, because the backlight module 10 of lateral light source described in the utility model is not increasing these light emitting diode 30 quantity and is not improving under the prerequisite of these light emitting diode 30 brightness, these LGP 50 rear light that appear of the light incident of this light emitting diode 30, can the light forward be imported this LGP 50 to improve the utilization rate of light source via the reflection of this light correcting structure 400, really can promote the front face brightness of the backlight module 10 of this lateral light source, reach the energy-saving effect that reduces energy resource consumption.
Certainly; the utility model also can have other various embodiments; in the situation that do not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (7)
1. the backlight module of a lateral light source, the backlight module of described lateral light source includes a LGP (50), one is located at the reflector plate (40) at this LGP (50) back side, one is located at the diffusion sheet (60) of this LGP (50) front, at least one brightness enhancement film (70) of being located at this diffusion sheet (60) front, a plurality of with respect to this LGP (50) side arrange and its light source directly to inject the light emitting diode (30) of this LGP (50) side, and one cover the anti-dazzling screen (20) of this light emitting diode (30), it is characterized in that
Be positioned on this reflector plate (40) between this reflector plate (40) and this LGP (50), be provided with a plurality of arranged in a straight line and this light emitting diode (30) light reflection is returned the light correcting structure (400) of this LGP (50) along this reflector plate (40).
2. the backlight module of lateral light source according to claim 1 is characterized in that, described light correcting structure (400) is for printing opacity and have a reflecting layer (41) between this reflector plate (40) and this light correcting structure (400).
3. the backlight module of lateral light source according to claim 2 is characterized in that, described reflecting layer (41) but be film plating layer or the metal level of reflection ray.
4. the backlight module of lateral light source according to claim 1 is characterized in that, described light correcting structure (400) surface has a reflecting layer (401).
5. the backlight module of lateral light source according to claim 4 is characterized in that, described reflecting layer (401) but be film plating layer or the metal level of reflection ray.
6. according to claim 1, the backlight module of 2,3,4 or 5 described lateral light sources, it is characterized in that, the cross section outline of described light correcting structure (400) is geometry or irregularly shaped.
7. according to claim 1, the backlight module of 2,3,4 or 5 described lateral light sources, it is characterized in that, the cross section outline of described light correcting structure (400) is that polygon, half arc or polygon are combined with arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203359775U CN202675079U (en) | 2012-07-10 | 2012-07-10 | Edge-type light emitting diode (LED) backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203359775U CN202675079U (en) | 2012-07-10 | 2012-07-10 | Edge-type light emitting diode (LED) backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202675079U true CN202675079U (en) | 2013-01-16 |
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ID=47495985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203359775U Expired - Fee Related CN202675079U (en) | 2012-07-10 | 2012-07-10 | Edge-type light emitting diode (LED) backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202675079U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867014A (en) * | 2015-02-11 | 2016-08-17 | Lg电子株式会社 | Backlight unit and display apparatus including the same |
| CN111435211A (en) * | 2019-01-11 | 2020-07-21 | 元太科技工业股份有限公司 | Reflective display device |
| CN111694087A (en) * | 2020-07-15 | 2020-09-22 | 惠科股份有限公司 | Backlight module and display device |
-
2012
- 2012-07-10 CN CN2012203359775U patent/CN202675079U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867014A (en) * | 2015-02-11 | 2016-08-17 | Lg电子株式会社 | Backlight unit and display apparatus including the same |
| CN105867014B (en) * | 2015-02-11 | 2020-05-01 | Lg电子株式会社 | Backlight unit and display device including the same |
| CN111435211A (en) * | 2019-01-11 | 2020-07-21 | 元太科技工业股份有限公司 | Reflective display device |
| CN111435211B (en) * | 2019-01-11 | 2023-05-02 | 元太科技工业股份有限公司 | Reflective display device |
| CN111694087A (en) * | 2020-07-15 | 2020-09-22 | 惠科股份有限公司 | Backlight module and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20140710 |
|
| EXPY | Termination of patent right or utility model |