CN104879685A - Backlight module and display screen thereof - Google Patents
Backlight module and display screen thereof Download PDFInfo
- Publication number
- CN104879685A CN104879685A CN201510259942.6A CN201510259942A CN104879685A CN 104879685 A CN104879685 A CN 104879685A CN 201510259942 A CN201510259942 A CN 201510259942A CN 104879685 A CN104879685 A CN 104879685A
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- CN
- China
- Prior art keywords
- backlight module
- light guide
- guide plate
- enhancement film
- plate
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/10—Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards
- F21V21/108—Arms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/02—Refractors for light sources of prismatic shape
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention is applicable to the technical field of display devices, and provides a backlight module and a display screen thereof. The backlight module comprises an iron frame, a light guide plate, a diffusion film and a bright enhancement film set, wherein the iron frame is combined by a bottom plate and four side plates which are enclosed on the bottom plate to form a cavity; the light guide plate, the diffusion film and the bright enhancement film set are laminated in sequence; the side plates are also provided with reinforcing plates in a bending manner; the inner side faces of the four side plates and the bottom plate are provided with reflecting layers; a light emitting circuit is arranged in a gap between the side face of the light guide plate and the side plates of the iron frame; the side face of the light guide plate is provided with prism stripes for reducing the brightness of the edge of the light guide plate. The display screen comprises the backlight module. According to the backlight module provided by the embodiment of the invention, the width of the frame of the backlight module is narrow and the strength is high, the integral strength of the product is guaranteed, and the requirements of the display screen on narrow-side and ultrathin development are met.
Description
Technical field
The invention belongs to display device technology field, particularly relate to a kind of backlight module and display screen thereof.
Background technology
Liquid crystal display product is the technical products of at present most main flow, and the development of mobile interchange technology, the portable ultra-thin mobile electronic device development trend that becomes gradually, this just requires the increasingly narrow limit of LCD MODULE (LCM) and ultrathin.Existing LCD backlight module, main member by: light source, support, reflectance coating, light guide plate, diffusion barrier and bright enhancement film etc. form.Light source mainly uses LED-FPC (Light-Emitting Diode soft arranging wire plate), and uses glue frame to fix each part of installation.And existing glue frame is by the impact of the injection moulding limit, limit the requirement that frame continues to narrow, and narrow plastic cement frame lacks intensity, is easily out of shape, have impact on the stability of Total Product.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of backlight module, its border width is narrow and intensity is high, ensure that the intensity of Total Product, meets the needs of the narrow limitization of display screen and ultrathin development.
The present invention is achieved in that a kind of backlight module, comprise chase, described chase is combined with four side plates forming cavity with enclosing to be arranged on described base plate by base plate, also comprise the light guide plate be cascading in described cavity, diffusion barrier and bright enhancement film group, described side plate has also been bent to form stiffener, the medial surface of four described side plates and described base plate are provided with reflector layer, in the gap between the side of described light guide plate and described side plate, are provided with illuminating circuit; The side of described light guide plate is provided with the prism pattern for reducing described light-guide edge bright line.
Further, described base plate is also provided with the reflectance coating for reflection ray.
Particularly, shading glue film is provided with between the end face of described side plate and described bright enhancement film group.
Particularly, described bright enhancement film group comprises lower bright enhancement film and upper bright enhancement film, and described shading glue film is arranged on described upper bright enhancement film.
Preferably, described shading glue film is black and white layers of two-sided or black layers of two-sided.
Particularly, wantonly three bendings 180 ° in four described side plates form described stiffener, and side plate 90-degree bent described in last is formed with the step for placing display floater.
Particularly, four sides of described light guide plate are provided with described prism pattern, and every side are provided with multiple; Described prism pattern wherein on wantonly three sides is along the length direction horizontally set of described light guide plate, and the described prism pattern on another side is longitudinally arranged along the thickness direction of described light guide plate.
Particularly, the one end described light guide plate being vertically arranged with described prism pattern is light inlet, and described chase is provided with the side of described step and described light inlet is positioned at the same side, and described illuminating circuit is arranged in both gaps.
Present invention also offers a kind of display screen, comprise above-mentioned backlight module.
A kind of backlight module provided by the invention, by being provided with chase, and is provided with stiffener, thus not only ensure that overall working strength, can also reduce overall dimensional thickness, meets the design of backlight module ultrathin and requirement to chase.And the medial surface of each side plate of chase and base plate are provided with reflector layer, thus can loss of light source be reduced, improve the brightness of backlight.On the side of light guide plate, be provided with prism pattern simultaneously, thus the light reflected from the gap between chase and light guide plate can be reduced, light can be injected into light guide plate to greatest extent, effectively reduce edge light leak, ensure that the backlight illumination of whole backlight module.
Adopt the display screen of above-mentioned backlight module, frame narrows by the design of directly wrapping up backlight module due to chase more, namely adds the anti-interference intensity that backlight intensity too increases display screen, meets the requirement to the increasingly narrow limit of display screen and ultrathin development.
Accompanying drawing explanation
Fig. 1 is the generalized section of the backlight module that the embodiment of the present invention provides;
Fig. 2 is the generalized section of another structure of backlight module that the embodiment of the present invention provides;
Fig. 3 is the overall schematic perspective view of chase in the backlight module that provides of the embodiment of the present invention;
Fig. 4 is the overall schematic perspective view of light guide plate in the backlight module that provides of the embodiment of the present invention;
Fig. 5 is the close-up schematic view at A place in Fig. 3;
Fig. 6 is the close-up schematic view at B place in Fig. 4.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Fig. 1, Fig. 3 and Fig. 5, a kind of backlight module 1 that the embodiment of the present invention provides, comprise chase 11, chase 11 is combined with four side plates 112 forming cavity 113 with enclosing to be arranged on base plate 111 by base plate 111, when actual production manufactures, for improving the efficiency of processing, super thin metal sheet material is adopted to make each side plate 112 one-body molded with base plate 111 by bending, thus become end face opening, be similar to square drawer structure.This backlight module 1 also comprises the light guide plate 12 be cascading in cavity 113, diffusion barrier 13 and bright enhancement film group 14, the light that light guide plate 12 conducts is after diffusion barrier 13 is evenly dispersed, thus the area of illumination can be added, last again through the 14 pairs of light collection enhancings of bright enhancement film group, thus ensure that the intensity of backlight.In order to improve the structural strength of chase 11, avoid distortion, be also bent to form stiffener 114 at side plate 112, the setting of stiffener 114 can increase the intensity of each side plate 112, improves overall stability.
Particularly, as shown in Fig. 1, Fig. 3 and Fig. 5, in the present embodiment, each backlight module is stored in the cavity 113 of chase 11, for ensureing backlight intensity, the medial surface and base plate 111 of four side plates 112 are all provided with reflector layer (not indicating in figure), and reflector layer adopts the mode of spraying or plating to process.And be provided with illuminating circuit (not indicating in figure) in gap between the side of light guide plate 12 and side plate 112; The side of light guide plate 12 is provided with the prism pattern 15 for reducing light guide plate 12 edge bright line, the cross section of prism pattern 15 is in " V " type.By such setting, illuminating circuit electrified light emitting, after light enters light guide plate 12, disperse everywhere in light guide plate 12, side due to light guide plate 12 is provided with prism pattern 15, and prism pattern 15 is for being equivalent to convex lens face in light guide plate 12 by interior light outward, the light portion that can reflect from light guide plate 12 side is reflected back light guide plate 12, the scattered beam that simultaneously will reflect from light guide plate 12 side more concentrates on the side plate 112 of chase 11, medial surface due to side plate 112 establishes reflector layer, just light reflection can be returned in light guide plate 12, thus the gap reduced between chase 11 and light guide plate 12 and the edge bright line produced, bottom line reduces loss of light source, thus improve backlight illumination.
The backlight module 1 that the embodiment of the present invention provides, by being provided with the chase 11 with cavity 113, each backlight module is arranged in cavity 113, and the medial surface of each side plate 112 is provided with reflector layer, store collecting by cavity 113, light source launched in cavity 113 and stores, decreasing loss of light source to greatest extent, thus improve the brightness of backlight, overcome traditional white plastic frame madial wall printing opacity and low the causing of reflectivity loses large defect at backlight illumination.And the side plate 112 of chase 11 is bent with stiffener 114, thus not only meets the demand of the narrow limitization development of frame, and the structural strength that the frame ensured uses.Meanwhile, by being provided with prism pattern 15 on the side of light guide plate 12, by the reflection of prism pattern 15, the light spilt being reflected back light guide plate 12 to greatest extent, decreasing the loss of light source, effectively reduce edge light leak, reduce the phenomenon of edge bright line.
Further, as shown in Figure 2, according to different instructions for uses, when enough high to brightness requirement and when not requiring backlight thickness, after the mode of simple oil spout or coating first can being adopted to form reflector layer to each side plate 112 of chase 11, on base plate 111, be also provided with the reflectance coating 16 for reflection ray, reflected by the enhancing of reflectance coating 16, improve the luminous intensity of backlight.And when the reflectivity of the reflector layer on chase 11 side plate 112 reaches enough high (95%-97%), save and use reflectance coating 16, thus reach and reduce backlight thickness and save material cost, and add antistatic and ability that is radiation interference.And concrete design, can select according to production requirement particularly, not limit at this.
Particularly, as depicted in figs. 1 and 2, after being placed in cavity 113 by each rear panel module, just between the end face and bright enhancement film group 14 of side plate 112, shading glue film 17 is provided with, so that edge light leak can be blocked.Shading glue film 17 is the black and white Double-face gummed paper or black Double-face gummed paper that cut with cutter film, when these shading glue films 17 cannot reach narrow frame requirement, robot point glue is used to replace traditional subsides photomask, point glue can by the Region control at black shading glue film 17 and backlight module edge in the width range of 0.2-0.3mm, traditional cutter can be broken through cut film material and effectively paste the restriction that width is 0.6mm, achieve narrower edge.
Particularly, as depicted in figs. 1 and 2 in the present embodiment, bright enhancement film group 14 comprises lower bright enhancement film 142 and upper bright enhancement film 141, and lower bright enhancement film 142 arranges on diffusion barrier 13, upper bright enhancement film 141 is arranged on lower bright enhancement film 142, and shading glue film 17 is arranged on bright enhancement film 141.Like this, by the common convergence effect of lower bright enhancement film 142 and upper bright enhancement film 141, enhance the intensity of light, and then improve the intensity of backlight.
Particularly, as shown in Figure 3 and Figure 5, the number of the stiffener 114 that each side plate 112 of chase 11 is bent to form can be arranged as requested, in this enforcement, for guaranteeing the structural strength of chase 11, wantonly three bendings 180 ° in four side plates 112 form stiffener 114, thus promote the structural strength of chase 11 entirety, not easily deform.And a remaining side plate 112 bends in 90 °, namely with the state of base plate 111 keeping parallelism, thus defining the step 115 for placing display floater, guaranteeing the stability that display floater is installed.
Particularly, as shown in Figure 4 and Figure 6, for ensureing backlight intensity and reducing the situation generation of edge bright border to the full extent, four sides of light guide plate 12 are provided with prism pattern 15, and every side is provided with multiple, and prism pattern 15 wherein on wantonly three sides is along the length direction horizontally set of light guide plate 12, thus can return from the light reflection of injection in light guide plate 12 in light guide plate 12.Prism pattern 15 on the another side that light guide plate 12 is remaining is longitudinally arranged along the thickness direction of light guide plate 12.And this one end is set to light inlet, then make chase 11 be provided with the side of step 115 and light inlet is positioned at the same side, and illuminating circuit is arranged in both gaps.Like this, another three side plates 112 of chase 11 are relative with the side that light guide plate 12 is provided with horizontal prism pattern 15, and the light that illuminating circuit sends enters light guide plate 12 from light inlet, further, owing to this side being provided with longitudinal prism pattern 15, the prism pattern 15 of this longitudinal direction is equivalent to concave mirror surface, by this prism pattern 15, by divergence of beam, can be injected in light guide plate 12 from different angles, guarantee the uniformity of light guide plate 12 light inlet brightness.
The embodiment of the present invention additionally provides a kind of display screen, comprises above-mentioned backlight module 1.By adopting above-mentioned backlight module 1, because frame narrows by design more that adopt chase 11 directly to wrap up backlight module, adding the anti-interference intensity that backlight intensity too increases display screen, breaching traditional plastic frame width large, the defect that intensity is low.This backlight module 1 backlight intensity is high, the narrow limit of frame, and thickness greatly reduces, and meets the requirement to the increasingly narrow limit of display screen and ultrathin development.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement or improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a backlight module, it is characterized in that, comprise chase, described chase is combined with four side plates forming cavity with enclosing to be arranged on described base plate by base plate, also comprise the light guide plate be cascading in described cavity, diffusion barrier and bright enhancement film group, described side plate has also been bent to form stiffener, and the medial surface of four described side plates and described base plate are provided with reflector layer, is provided with illuminating circuit in the gap between the side of described light guide plate and described side plate; The side of described light guide plate is provided with the prism pattern for reducing described light-guide edge bright line.
2. backlight module as claimed in claim 1, is characterized in that, described base plate is also provided with the reflectance coating for reflection ray.
3. backlight module as claimed in claim 1, is characterized in that, be provided with shading glue film between the end face of described side plate and described bright enhancement film group.
4. backlight module as claimed in claim 3, it is characterized in that, described bright enhancement film group comprises lower bright enhancement film and upper bright enhancement film, and described shading glue film is arranged on described upper bright enhancement film.
5. backlight module as claimed in claim 3, it is characterized in that, described shading glue film is black and white layers of two-sided or black layers of two-sided.
6. as the backlight module in claim 1 to 5 as described in any one, it is characterized in that, wantonly three bendings 180 ° in four described side plates form described stiffener, and side plate 90-degree bent described in last is formed with the step for placing display floater.
7. as the backlight module in claim 1 to 5 as described in any one, it is characterized in that, four sides of described light guide plate are provided with described prism pattern, and every side is provided with multiple; Described prism pattern wherein on wantonly three sides is along the length direction horizontally set of described light guide plate, and the described prism pattern on another side is longitudinally arranged along the thickness direction of described light guide plate.
8. backlight module as claimed in claim 6, it is characterized in that, the one end described light guide plate being vertically arranged with described prism pattern is light inlet, and described chase is provided with the side of described step and described light inlet is positioned at the same side, and described illuminating circuit is arranged in both gaps.
9. a display screen, is characterized in that, comprises backlight module as claimed in any of claims 1 to 8 in one of claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259942.6A CN104879685B (en) | 2015-05-20 | 2015-05-20 | Backlight module and its display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259942.6A CN104879685B (en) | 2015-05-20 | 2015-05-20 | Backlight module and its display screen |
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| Publication Number | Publication Date |
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| CN104879685A true CN104879685A (en) | 2015-09-02 |
| CN104879685B CN104879685B (en) | 2018-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510259942.6A Active CN104879685B (en) | 2015-05-20 | 2015-05-20 | Backlight module and its display screen |
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| CN (1) | CN104879685B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773244A (en) * | 2016-12-23 | 2017-05-31 | 武汉华星光电技术有限公司 | A kind of display module |
| CN106816089A (en) * | 2015-11-27 | 2017-06-09 | 扬升照明股份有限公司 | Penetration display module and its driving method |
| CN108777726A (en) * | 2018-06-29 | 2018-11-09 | 上海摩软通讯技术有限公司 | Complete machine integral type touch-control display module and its installation method, mobile terminal |
| CN108954053A (en) * | 2017-05-22 | 2018-12-07 | 南昌欧菲显示科技有限公司 | Backlight module, display device and terminal |
| CN112530278A (en) * | 2019-09-19 | 2021-03-19 | 乐金显示有限公司 | Display device |
| CN113741075A (en) * | 2020-05-30 | 2021-12-03 | 荣耀终端有限公司 | Display screen and electronic equipment |
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| CN203217208U (en) * | 2013-04-03 | 2013-09-25 | 合肥宝龙达光电技术有限公司 | Liquid crystal module |
| CN205037156U (en) * | 2015-05-20 | 2016-02-17 | 深圳市华锐博光电有限公司 | Backlight unit and display screen thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106816089A (en) * | 2015-11-27 | 2017-06-09 | 扬升照明股份有限公司 | Penetration display module and its driving method |
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| US10670904B2 (en) | 2016-12-23 | 2020-06-02 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display module |
| CN108954053A (en) * | 2017-05-22 | 2018-12-07 | 南昌欧菲显示科技有限公司 | Backlight module, display device and terminal |
| CN108777726A (en) * | 2018-06-29 | 2018-11-09 | 上海摩软通讯技术有限公司 | Complete machine integral type touch-control display module and its installation method, mobile terminal |
| CN112530278A (en) * | 2019-09-19 | 2021-03-19 | 乐金显示有限公司 | Display device |
| CN112530278B (en) * | 2019-09-19 | 2023-04-14 | 乐金显示有限公司 | Display device |
| US11651710B2 (en) | 2019-09-19 | 2023-05-16 | Lg Display Co., Ltd. | Display device |
| CN113741075A (en) * | 2020-05-30 | 2021-12-03 | 荣耀终端有限公司 | Display screen and electronic equipment |
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|---|---|
| CN104879685B (en) | 2018-08-07 |
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