CN111897163A - Backlight module device for realizing ultra-low OD by matching LED with lens - Google Patents

Backlight module device for realizing ultra-low OD by matching LED with lens Download PDF

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Publication number
CN111897163A
CN111897163A CN202010843017.9A CN202010843017A CN111897163A CN 111897163 A CN111897163 A CN 111897163A CN 202010843017 A CN202010843017 A CN 202010843017A CN 111897163 A CN111897163 A CN 111897163A
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CN
China
Prior art keywords
lens
light
emitting
concave surface
led
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Pending
Application number
CN202010843017.9A
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Chinese (zh)
Inventor
翟标
王科
吴疆
彭友
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Coreach Electronic Technology Co ltd
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Coreach Electronic Technology Co ltd
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Priority to CN202010843017.9A priority Critical patent/CN111897163A/en
Publication of CN111897163A publication Critical patent/CN111897163A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The invention discloses a backlight module device for realizing ultra-low OD by matching an LED with a lens, which comprises a lens body, an LED bracket, a fixing ring, a light-emitting seat, a first lens column foot and a second lens column foot, wherein the lens body comprises a lens concave surface and a lens convex surface, the lens convex surface is fixedly arranged at the position, close to the middle, of the upper end of the lens concave surface, the fixing ring is fixedly arranged at the position, close to the middle, of the inner part of the lens concave surface, the first lens column foot and the second lens column foot are fixedly arranged at the positions, close to four vertex angles, of the lower end of the lens concave surface, the light-emitting seat is fixedly arranged at the position, close to the middle, of the lower end of the lens concave surface, and; the scheme of the ultrathin OD3-OD5 direct type backlight module is realized, and the problems of heavy granular sensation of backlight picture light spots and uneven picture distribution in the ultrathin OD scheme are solved; and makes the light source smaller and the backlight picture more uniform and brighter at ultra-low OD.

Description

Backlight module device for realizing ultra-low OD by matching LED with lens
Technical Field
The invention relates to the technical field of television light source application, in particular to a backlight module device for realizing ultra-low OD by matching an LED with a lens.
Background
In the direct type backlight which is common in the market at present, the adopted scheme is that an EMC bracket LED is arranged on the upper surface of a lamp strip, the lens is matched above the LED to light as the light source of the liquid crystal screen, the design is influenced by the LED bracket and the optical lens, so that the height of the cavity of the television is higher, generally above OD10, moreover, the LED of the EMC bracket has limited bearable current, the brightness of the whole machine is improved to a limited extent, the pursuit of high-end televisions or television enthusiasts for vision can not be met, the POB packaged LED has smaller volume and lower height, the bearable current is limited, but the lamp arrangement scheme of a plurality of LEDs in different areas is adopted, can further improve the backlight brightness, meet the brightness requirement of the whole machine, have smaller light source volume and height, and match with smaller lenses of optical design, therefore, the ultra-thin television design with the height of OD3-OD5 is realized, and the television enthusiasts are more fascinated and have rich visual experience.
Publication No. CN101266354B discloses a backlight module and an application device thereof. The backlight module at least comprises a light source, a reflector and a light guide plate, wherein the light source reflector comprises: the first groove is used for accommodating the light guide plate, and the second groove is used for accommodating the light source. The first groove is provided with a bottom surface and a first opening. The second groove is provided with a second opening arranged on the bottom surface of the first groove, and the second opening is smaller than the bottom surface. The light guide plate is provided with a first plane, a light emergent surface and an end surface, wherein the light emergent surface is opposite to the first plane, the end surface is connected with the first plane and the light emergent surface respectively through a first angle guiding part and a second angle guiding part, the end surface has a size larger than or equal to the second opening, and the first angle guiding part and the second angle guiding part are positioned in the first groove, so that the end surface covers the second opening. Light leakage can be effectively and substantially prevented. The existing defects include: the scheme of the ultrathin OD3-OD5 direct type backlight module cannot be realized, and the problems of heavy granular sensation of backlight picture light spots and uneven picture distribution in the ultrathin OD scheme are solved; and makes the light source smaller and the backlight picture more uniform and brighter at ultra-low OD.
Disclosure of Invention
The invention aims to provide a backlight module device for realizing ultra-low OD by matching an LED with a lens, and solves the technical problems that: how to realize the scheme of the ultrathin OD3-OD5 direct type backlight module and solve the problems of heavy sense of light spot particles of a backlight picture and uneven distribution of the picture of the ultrathin OD scheme; and makes the light source smaller and the backlight picture more uniform and brighter at ultra-low OD.
The purpose of the invention can be realized by the following technical scheme:
a backlight module device for realizing ultra-low OD by matching an LED with a lens comprises a lens body, an LED support, a fixing ring, a light emitting seat, a first lens column base and a second lens column base, wherein the lens body comprises a lens concave surface and a lens convex surface, the lens convex surface is fixedly arranged at the upper end of the lens concave surface close to the middle position, the fixing ring is fixedly arranged at the position inside the lens concave surface close to the middle position, the first lens column base and the second lens column base are fixedly arranged at the lower end of the lens concave surface close to four vertex angles, the light emitting seat is fixedly arranged at the lower end of the lens concave surface close to the middle position, and the LED support is fixedly arranged at the lower end of the light emitting seat;
the light-emitting seat comprises a PPA bracket, a light-emitting cup opening and a light-emitting lamp, the light-emitting cup bracket is fixedly arranged on the inner surface of the PPA bracket, and the light-emitting lamp and the light-emitting cup opening are both arranged inside the light-emitting cup bracket.
As a further improvement of the invention: the luminescent lamp and the luminescent base are packaged through the POB, and the convex surface of the lens is fixedly connected with the concave surface of the lens through the fixing ring.
As a further improvement of the invention: the number of the first lens column bases and the number of the second lens column bases are two, and the first lens column bases and the second lens column bases are symmetrically arranged and distributed at the lower end of the concave surface of the lens.
As a further improvement of the invention: the convex surface of the lens is in a semi-elliptical shape, and the opening of the luminous cup is in a rectangular shape.
As a further improvement of the invention: and a light hole is formed in the position, close to the middle, of the upper end of the concave surface of the lens.
The invention has the beneficial effects that:
according to the invention, through the matched use of the lens concave surface, the lens convex surface, the LED bracket, the fixing ring and the light-emitting seat, the scheme of the ultrathin OD3-OD5 direct type backlight module can be realized, and the problems of heavy granular sensation of backlight picture spots and uneven picture distribution in the ultrathin OD scheme are solved; the POB packaging enables the light source of the light-emitting lamp to be smaller, and the light rays emitted by the light source can be enabled to be more uniform in backlight picture and higher in brightness under the ultra-low OD by matching with a special design development lens;
the backlight module device can also be applied to a multi-partition lamp panel, so that the light source is controlled in partitions, the backlight of the television is displayed, the picture is more bright in color, the picture is dynamic and vivid, and the visual impact of bright eyes is provided for a viewer;
the conventional direct type backlight scheme has limited brightness improvement and limited dynamic experience of pictures, and the invention can improve the overall backlight brightness, the backlight uniformity and the picture saturation of the overall picture;
the edge LED on the traditional reflective direct type light bar has a certain distance from the edge of a cavity of a back plate of a television, four corners of the television have dark areas, and lenses are difficult to adjust to solve the defect.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a backlight module device for realizing ultra-low OD by using an LED and a lens according to the present invention;
FIG. 2 is a schematic cross-sectional view of the connection between the PPA bracket and the light-emitting cup bracket of the present invention.
In the figure: 1. a lens concave surface; 2. a lens convex surface; 3. an LED support; 4. a fixing ring; 5. a light emitting base; 501. a PPA scaffold; 502. a light emitting cup holder; 503. a luminous cup mouth; 6. a first lens column base; 7. a second lens pedestal.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, a backlight module device with an ultra-low OD realized by an LED in combination with a lens includes a lens body, an LED support 3, a fixing ring 4, a light-emitting base 5, a first lens column base 6 and a second lens column base 7, wherein the lens body includes a lens concave surface 1 and a lens convex surface 2, the lens convex surface 2 is fixedly installed at a position near the middle of the upper end of the lens concave surface 1, the fixing ring 4 is fixedly installed at a position near the middle of the inside of the lens concave surface 1, the first lens column base 6 and the second lens column base 7 are fixedly installed at positions near four vertex angles of the lower end of the lens concave surface 1, the light-emitting base 5 is fixedly installed at a position near the middle of the lower end of the lens concave surface 1, and the LED support 3 is fixedly installed at the lower end of the;
the light-emitting base 5 comprises a PPA support 501, a light-emitting cup support 502, a light-emitting cup opening 503 and a light-emitting lamp, wherein the light-emitting cup support 502 is fixedly arranged on the inner surface of the PPA support 501, and the light-emitting lamp and the light-emitting cup opening 503 are both arranged inside the light-emitting cup support 502.
The luminescent lamp and the luminescent base 5 are packaged through POB, and the lens convex surface 2 is fixedly connected with the lens concave surface 1 through a fixing ring 4.
The number of the first lens column bases 6 and the number of the second lens column bases 7 are two, and the first lens column bases 6 and the second lens column bases 7 are symmetrically arranged and distributed at the lower end of the lens concave surface 1.
The convex surface 2 of the lens is semi-elliptical, and the opening 503 of the light-emitting cup is rectangular.
And a light hole is formed at the position, close to the middle, of the upper end of the lens concave surface 1.
The working principle of the invention is as follows: the light source of the luminescent lamp can be an LED light source, a PPA bracket packaged by POB and having a 1.8 cup mouth is selected, and the PPA material can resist the continuous high temperature of 200 ℃ and can also keep good dimensional stability; the POB packaging is a mainstream of a packaging boundary, and the POB packaging is a commonly used packaging means by small and medium-sized full-automatic dispensing machines and full-automatic glue-pouring machines manufacturers;
on the LED light source, light rays emitted by the LED light source penetrate through the lens body, so that the divergence angle of the light rays after penetrating through the lens body is larger, the light rays are more uniformly diffused on the panel, the picture is clearer and tidier, and the contrast and the uniformity are improved;
when the existing scheme does not use a newly developed lens body, the angle of light divergence is small, so that the brightness is low; when the lens body in the embodiment of the invention is used, light rays pass through the concave surface 1 and the convex surface 2 of the lens, so that the divergence angle of the light rays is larger, and the brightness is higher; the brightness of the module can be as high as 500nit as possible, and the uniformity can only reach about 65; the brightness of the module in the embodiment of the invention can be 1000nit, and the uniformity can be improved to more than 85%;
according to the embodiment of the invention, the profile of the lens body is reduced, so that the divergence range of the light source is more concentrated, and the overall brightness of the backlight module is improved;
compared with the prior art, according to the various aspects disclosed by the invention, the ultrathin OD3-OD5 direct type backlight module scheme can be realized by matching the lens body, the LED bracket 3, the fixing ring 4 and the light-emitting seat 5, and the problems of heavy granular sensation of backlight picture light spots and uneven picture distribution in the ultrathin OD scheme are solved; the POB packaging enables the light source of the light-emitting lamp to be smaller, and the light rays emitted by the light source can be enabled to be more uniform in backlight picture and higher in brightness under the ultra-low OD by matching with a special design development lens;
the backlight module device can also be applied to a multi-partition lamp panel, so that the light source is controlled in partitions, the backlight of the television is displayed, the picture is more bright in color, the picture is dynamic and vivid, and the visual impact of bright eyes is provided for a viewer;
the conventional direct type backlight scheme has limited brightness improvement and limited dynamic experience of pictures, and the invention can improve the overall backlight brightness, the backlight uniformity and the picture saturation of the overall picture;
the edge LED on the traditional reflective direct type light bar has a certain distance from the edge of a cavity of a back plate of a television, four corners of the television have dark areas, and lenses are difficult to adjust to solve the defect.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (5)

1. A backlight module device for realizing ultra-low OD by matching an LED with a lens is characterized by comprising a lens body, an LED bracket (3), a fixing ring (4), a light-emitting seat (5), a first lens column base (6) and a second lens column base (7), the lens body comprises a lens concave surface (1) and a lens convex surface (2), the lens convex surface (2) is fixedly arranged at the position, close to the middle, of the upper end of the lens concave surface (1), a fixing ring (4) is fixedly arranged at the position close to the middle inside the concave surface (1) of the lens, the first lens column foot (6) and the second lens column foot (7) are fixedly arranged at the lower end of the lens concave surface (1) close to the four vertex angles, the light-emitting seat (5) is fixedly arranged at the position of the lower end of the concave surface (1) of the lens close to the middle, the lower end of the light-emitting seat (5) is fixedly provided with an LED bracket (3);
the light-emitting base (5) comprises a PPA support (501), a light-emitting cup support (502), a light-emitting cup opening (503) and a light-emitting lamp, the light-emitting cup support (502) is fixedly installed on the inner surface of the PPA support (501), and the light-emitting lamp and the light-emitting cup opening (503) are both arranged inside the light-emitting cup support (502).
2. The backlight module device with ultra-low OD achieved by LED combined with lens as claimed in claim 1, wherein the light emitting lamps and the light emitting bases (5) are packaged by POB, and the convex lens surface (2) is fixedly connected with the concave lens surface (1) by the fixing ring (4).
3. The backlight module device with ultra-low OD achieved by matching LEDs with lenses as claimed in claim 1, wherein the number of the first lens column bases (6) and the second lens column bases (7) is two, and the first lens column bases (6) and the second lens column bases (7) are symmetrically arranged and distributed at the lower end of the concave surface (1) of the lens.
4. The backlight module device with ultra-low OD achieved by LED combined with lens as claimed in claim 1, wherein the convex surface (2) of the lens is semi-elliptical and the opening (503) of the light-emitting cup is rectangular.
5. The backlight module device with ultra-low OD achieved by matching of LED and lens as claimed in claim 1, wherein the upper end of the concave surface (1) of the lens is provided with a light hole near the middle.
CN202010843017.9A 2020-08-20 2020-08-20 Backlight module device for realizing ultra-low OD by matching LED with lens Pending CN111897163A (en)

Priority Applications (1)

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