CN203414707U - Side-light type backlight module - Google Patents
Side-light type backlight module Download PDFInfo
- Publication number
- CN203414707U CN203414707U CN201320466532.5U CN201320466532U CN203414707U CN 203414707 U CN203414707 U CN 203414707U CN 201320466532 U CN201320466532 U CN 201320466532U CN 203414707 U CN203414707 U CN 203414707U
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- light
- guide plate
- light guide
- lens
- backlight module
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Abstract
The utility model discloses a side-light type backlight module. The side-light type backlight module comprises a light source, a lens, a light guide plate and a reflecting mirror, wherein the light source, the lens as well as the reflecting mirror are arranged outside four corners of the light guide plate; the light source is arranged in the reflecting mirror; the lens is a plane-convex lens, wherein the plane part of the plane-convex lens is close to the light guide plate, and the convex part of the plane-convex lens is close to the light source; the plane part consists of a plurality of plane-convex surfaces; the light of the light source which passes through the plane-convex surfaces, has an angle of refraction being1 degrees-5 degrees deviating to the bottom surface of the light guide plate. According to the side-light type backlight module disclosed by the utility model, the distribution condition of light beams of the light source passing through the lens is changed by the plane part of the lens arranged outside the four corners of the light guide plate, so that light distribution in the light guide plate is adjusted, reflection times of the light on the upper surface of the light guide plate and the like are reduced, and light uniformity of the light guide plate and light utilization rate of the backlight module are improved.
Description
Technical field
The utility model relates to a kind of backlight module, especially relates to a kind of side-light backlight module.
Background technology
Along with the development of LED display technique, liquid crystal indicator is high-homogenized to high brightness, light, thickness ultrathin, effective energy-saving future development.The development of display technique and high request impel improving and constantly bringing forth new ideas of backlight module, that backlight is also pursued is thinner, gentlier, brighter, more energy-conservation.The advantages such as that side-light type back light has is light, thin, low energy consumption.Meanwhile, side-light type back light be take light emitting diode and as light source, is met the advantages such as its color reducibility is good, convenient management, life-span length, safety, environmental protection, in modern display technology, is used widely.
In the backlight module of available liquid crystal device, side-light backlight module is that pointolite or line source are converted into area source.But also there are many defects at aspects such as utilization factor backlight, backlight illumination, light uniformity coefficient, photoelectric transformation efficiencies in side-light backlight module.Therefore, how designing better backlight source module, is the main bugbear that prior art faces.
Utility model content
The utility model provides the side-light backlight module that a kind of utilization factor backlight is high, backlight illumination is high, light uniformity coefficient is high, photoelectric transformation efficiency is high.
The utility model is by the following technical solutions:
A module, comprises light source, lens, light guide plate, catoptron; Described light source, lens and catoptron are all positioned at outside, four bights of light guide plate; Described light source is disposed in catoptron; Described lens are plano-convex lens, and its planar portions is near light guide plate, and its protuberance is near light source; Described planar portions is comprised of some plan-convexs, and the light of the light source after plan-convex all exists the refraction angle of a deflection bottom surface of light guide plate, and this refraction angle is 1 °～5 °.
By setting the refraction angle of the light of the light source after planar portions, can reduce light at the order of reflection of light guide plate upper surface etc., contribute to the light distribution in dispersed light each region in light guide plate, can improve the light uniformity coefficient of light guide plate and the light utilization efficiency of backlight module.
For increasing the uniformity coefficient that enters the distribution of light in light guide plate after lens, described plan-convex is uniform diffuse transmission, and described planar portions and light guide plate fit.
For further submitting the utilization factor of luminous energy to, reduce the relative dark space on light guide plate four limits, the sidewall outside of described light guide plate is equipped with reflectance coating.
The utility model changes the distribution situation of light beam of light source after lens by being arranged on the plan-convex of the lens plane portion in outside, four bights of light guide plate, and then the light in adjustment light guide plate distributes, reduce light at the order of reflection of light guide plate upper surface etc., improve the light uniformity coefficient of light guide plate and the light utilization efficiency of backlight module.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in detail.
Fig. 1 is the structural representation of the utility model preferred embodiment.
Fig. 2 is corner structure schematic diagram of side-light backlight module in Fig. 1.
Fig. 3 is the partial structurtes schematic diagram of lens in Fig. 1.
In figure: 1-housing, 2-light source assembly, 3-reflectance coating, 4-catoptron, 5-light source, 6-lens, 7-reflectance coating, 8-protuberance, 9-planar portions, 10-plan-convex.
Embodiment
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing and embodiment, the utility model is described further.
Be the preferred embodiment of the utility model side-light backlight module as shown in Figure 1 to Figure 3.As shown in Figure 1, described side-light backlight module comprises housing 1, is fixed on light guide plate and light source assembly 2 in housing 1.The quantity of described light source assembly 2 is four, is separately fixed at the outside, four bights of light guide plate.Described light guide plate sidewall outside is also provided with reflectance coating 3, to submit the utilization factor of luminous energy to, reduces the relative dark space on light guide plate four limits.
As shown in Figure 2, described light source assembly 2 comprises half elliptic catoptron 4, is disposed at catoptron 4 inner light sources 5, and the lens 6 that are positioned at catoptron 4 leading flanks.Described light source assembly 2 is fixed on the outside, bight of light guide plate by fixed mount.Described side-light backlight module also comprises the reflectance coating 7 that is close to bottom surface of light guide plate.Described lens 6 are plano-convex lens, and its protuberance 8 is the plane of incidence, and its planar portions 9 is plane of refraction, and planar portions 9 is close in light guide plate.The light that light source 5 produces directive lens 6 directly or after catoptron 4 reflections, then enter light guide plate; Light, after the reflectance coating 7 of bottom surface of light guide plate, is derived from the upper surface of light guide plate.The light of deriving from the upper surface of light guide plate enters other optical film materials (as diffusion barrier, brightness enhancement film etc.) and display panel again.
As shown in Figure 3, described planar portions 9 is comprised of some plan-convexs 10, and the light of the light source 5 after plan-convex 10 all exists the refraction angle of a deflection bottom surface of light guide plate, and this refraction angle is 1 °～5 °.By setting the refraction angle of the light of the light source 5 after planar portions 9, can reduce light at the order of reflection of light guide plate upper surface etc., contribute to the light distribution in dispersed light each region in light guide plate, can improve the uniformity coefficient of light and the light utilization efficiency of backlight module in light guide plate.
By sunykatuib analysis, can obtain the light intensity distributions that rays pass through lens 6 enters bottom surface of light guide plate, thus the illuminance size in estimation each region of bottom surface of light guide plate.Change the curvature of described plan-convex 10, can access the variation tendency of each area light brightness value of light guide plate.Thereby, by setting the curvature of each plan-convex 10, can make to be positioned at the light that two light source assemblies 2 at light guide plate diagonal angle penetrate and penetrate stack mutually in the corresponding diagonal zones of light guide plate, thereby light guide plate glazing is evenly distributed.
The above embodiment has only expressed a kind of embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (3)
1. a side-light backlight module, comprises light source, lens, light guide plate, catoptron; It is characterized in that: described light source, lens and catoptron are all positioned at outside, four bights of light guide plate; Described light source is disposed in catoptron; Described lens are plano-convex lens, and its planar portions is near light guide plate, and its protuberance is near light source; Described planar portions is comprised of some plan-convexs, and the light of the light source after plan-convex all exists the refraction angle of a deflection bottom surface of light guide plate, and this refraction angle is 1 °～5 °.
2. side-light backlight module according to claim 1, is characterized in that: described plan-convex is uniform diffuse transmission, and described planar portions and light guide plate fit.
3. side-light backlight module according to claim 1, is characterized in that: the four edges outside of described light guide plate is equipped with reflectance coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320466532.5U CN203414707U (en) | 2013-08-01 | 2013-08-01 | Side-light type backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320466532.5U CN203414707U (en) | 2013-08-01 | 2013-08-01 | Side-light type backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203414707U true CN203414707U (en) | 2014-01-29 |
Family
ID=49977588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320466532.5U Expired - Fee Related CN203414707U (en) | 2013-08-01 | 2013-08-01 | Side-light type backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203414707U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549147A (en) * | 2016-02-22 | 2016-05-04 | 京东方科技集团股份有限公司 | Backlight module and preparing method and display device thereof |
| WO2024037476A1 (en) * | 2022-08-14 | 2024-02-22 | 湛玉文 | Reflective backlight module of liquid crystal display |
-
2013
- 2013-08-01 CN CN201320466532.5U patent/CN203414707U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549147A (en) * | 2016-02-22 | 2016-05-04 | 京东方科技集团股份有限公司 | Backlight module and preparing method and display device thereof |
| WO2024037476A1 (en) * | 2022-08-14 | 2024-02-22 | 湛玉文 | Reflective backlight module of liquid crystal display |
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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: 20140129 Termination date: 20190801 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |