CN112799253A - Structure for eliminating light intensity at top of mini-LED light source - Google Patents

Structure for eliminating light intensity at top of mini-LED light source Download PDF

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Publication number
CN112799253A
CN112799253A CN202110115488.2A CN202110115488A CN112799253A CN 112799253 A CN112799253 A CN 112799253A CN 202110115488 A CN202110115488 A CN 202110115488A CN 112799253 A CN112799253 A CN 112799253A
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CN
China
Prior art keywords
mini
led
light intensity
light source
mcf
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Pending
Application number
CN202110115488.2A
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Chinese (zh)
Inventor
朱道田
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Jiangsu Yunhonghui Electronic Technology Co ltd
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Jiangsu Yunhonghui Electronic Technology Co ltd
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Application filed by Jiangsu Yunhonghui Electronic Technology Co ltd filed Critical Jiangsu Yunhonghui Electronic Technology Co ltd
Priority to CN202110115488.2A priority Critical patent/CN112799253A/en
Publication of CN112799253A publication Critical patent/CN112799253A/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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • 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

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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)
  • Planar Illumination Modules (AREA)

Abstract

The invention discloses a structure for eliminating light intensity at the top of a mini-LED light source, which comprises a mini-LED basic circuit board, a reflector plate, UV glue, a PET (polyethylene terephthalate) film and an MCF (micro control Filter) film, wherein the reflector plate is adhered to the outer surface of the upper end of the mini-LED basic circuit board, the UV glue is coated on the outer surface of the upper end of the reflector plate, the PET film is adhered to the outer surface of the upper end of the UV glue, and the MCF film is adhered to the outer surface of the upper end of the PET film; and a plurality of groups of mini-LED chips are fixedly arranged on the outer surface of the upper end of the mini-LED basic circuit board through a die bonder. According to the structure for eliminating the top light intensity of the mini-LED light source, the excellent optical performance of the MCF membrane and white spots printed under the PET film in the MCF membrane are utilized to attenuate the top light intensity of the mini-LED light source and improve the uniformity of light effect, so that the thinning and illumination uniformity of liquid crystal backlight are facilitated, the top light intensity of a chip can be effectively inhibited and the uniformity of light effect is improved, and the thickness of the MCF membrane is favorably controlled, so that the application range is wide, and a better use prospect is brought.

Description

Structure for eliminating light intensity at top of mini-LED light source
Technical Field
The invention relates to the field of design of a mini-LED backlight plate, in particular to a structure for eliminating light intensity at the top of a mini-LED light source.
Background
The mini-LED technology can be regarded as an upgrade version of a traditional LCD screen, and mainly can effectively improve contrast and enhance picture expressive force. The traditional LCD screen can be provided with LED backlight, but the common LCD screen backlight usually only supports unified adjustment and cannot independently adjust the brightness of a certain area. Even for LCD screens that support backlight partition adjustment in small parts, the number of backlight partitions is very limited. Different from the traditional LCD screen backlight, the mini-LED technology can make LED backlight lamp beads very small, so that more backlight lamp beads can be integrated on the same screen, more fine backlight partitions can be divided, and more backlight partitions can realize more fine regional light emission adjustment.
Under the addition of the mini-LED technology, the screen is provided with a plurality of backlight partitions, the brightness of a small area of the screen can be independently controlled, the bright place is bright enough, the dark place is dark, and the limitation of picture expression is smaller. When a certain part of the picture needs to display black, the small backlight of the part can be dimmed in a subarea mode or even turned off, more pure black is obtained, and the contrast is greatly improved, which cannot be realized by a common LCD screen. With the addition of the mini-LED technology, the contrast close to that of an OLED screen can be possessed.
The screen adopting the mini-LED technology also has the advantages of long service life, difficulty in screen burning and the like, and the cost after the screen is manufactured in a large scale is lower than that of an OLED screen. Certainly, the mini-LED technology has the defect, and the design of eliminating the light intensity at the top of the mini-LED light source is particularly important because more backlight beads are integrated and the thickness is not easy to be thinned, so that a structure for eliminating the light intensity at the top of the mini-LED light source is provided.
Disclosure of Invention
The invention mainly aims to provide a structure for eliminating the light intensity at the top of a mini-LED light source, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an eliminate mini-LED light source top light intensity structure, includes mini-LED basic circuit board, reflector plate, UV glues, PET membrane and MCF diaphragm, the upper end surface at mini-LED basic circuit board is pasted to the reflector plate, the UV glues the upper end surface of coating at the reflector plate, the PET membrane is attached at the upper end surface that the UV glued, the MCF diaphragm is attached at the upper end surface of PET membrane.
Preferably, the outer surface of the upper end of the mini-LED basic circuit board is fixedly provided with a plurality of groups of mini-LED chips through a die bonder.
Preferably, the outer surface of the upper end of the reflector plate is provided with a plurality of groups of mounting holes, and the mini-LED chip is located inside the mounting holes.
Preferably, the size of the mounting hole is larger than that of the mini-LED chip, and the UV glue is further coated on the mini-LED chip.
Preferably, the MCF membrane includes a PE protection film, a colloid, and a PET film, the colloid covers the outer surface of the lower end of the PET film, and the PE protection film is adhered to the outer surface of the lower end of the colloid.
Preferably, the outer surface of the lower end of the PET film is printed with a plurality of groups of white dots.
Preferably, the white point is located directly above the mini-LED chip.
Compared with the prior art, the invention provides a structure for eliminating the light intensity at the top of a mini-LED light source, which has the following beneficial effects:
the invention utilizes the excellent optical properties of the MCF membrane, such as ultrahigh light transmittance, low haze, low chromatic aberration and antireflection, and prints white dots under the PET film in the MCF membrane to attenuate the top light intensity of the mini-LED light source and improve the uniformity of light effect, thereby being beneficial to the lightening and lightening of liquid crystal backlight and the illumination uniformity, and the structure for eliminating the top light intensity of the mini-LED light source is simple in structure, convenient to operate and practical.
The parts of the device not involved are the same as or can be implemented using prior art.
Drawings
FIG. 1 is a schematic structural diagram of a structure for eliminating the top light intensity of a mini-LED light source according to the present invention;
FIG. 2 is a cross-sectional view of an MCF diaphragm in a structure for eliminating the light intensity at the top of a mini-LED light source according to the present invention;
FIG. 3 is a top view structural diagram of an MCF film in a structure for eliminating the top light intensity of a mini-LED light source according to the present invention.
In the figure: 1. a mini-LED base circuit board; 2. a mini-LED chip; 3. a reflective sheet; 4. mounting holes; 5. UV glue; 6. a PET film; 7. an MCF membrane; 8. PE protective film; 9. a colloid; 10. white points; 11. a PET film.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
A structure for eliminating the light intensity at the top of a mini-LED light source is shown in figures 1-3 and comprises a mini-LED basic circuit board 1, a reflector plate 3, UV glue 5, a PET film 6 and an MCF membrane 7, wherein the reflector plate 3 is adhered to the outer surface of the upper end of the mini-LED basic circuit board 1, the UV glue 5 is coated on the outer surface of the upper end of the reflector plate 3, the PET film 6 is adhered to the outer surface of the upper end of the UV glue 5, and the MCF membrane 7 is adhered to the outer surface of the upper end of the PET film 6.
When the light guide plate is used, the light rays below the light guide plate are reflected by the reflector plate 3, the utilization rate of the light is increased, and the MCF membrane 7 is attached to the PET membrane 6 after the PE protective film 8 is removed.
The outer surface of the upper end of the mini-LED basic circuit board 1 is fixedly provided with a plurality of groups of mini-LED chips 2 through a die bonder.
The outer surface of the upper end of the reflector plate 3 is provided with a plurality of groups of mounting holes 4, and the mini-LED chip 2 is positioned in the mounting holes 4.
The size of the mounting hole 4 is larger than that of the mini-LED chip 2, and the UV glue 5 is further coated on the mini-LED chip 2.
The MCF membrane 7 comprises a PE protective film 8, a colloid 9 and a PET film 11, wherein the colloid 9 covers the outer surface of the lower end of the PET film 11, and the PE protective film 8 is adhered to the outer surface of the lower end of the colloid 9.
The outer surface of the lower end of the PET film 11 is printed with a plurality of groups of white dots 10.
The white point 10 is located directly above the mini-LED chip 2.
The invention is a structure for eliminating the top light intensity of a mini-LED light source, which utilizes the excellent optical properties of an MCF membrane 7, such as ultrahigh light transmittance, low haze, low chromatic aberration and antireflection, and prints white dots 10 under a PET film 11 in the MCF membrane 7 to attenuate the top light intensity of the mini-LED light source and improve the uniformity of light efficiency, thereby being beneficial to the lightness and thinness of liquid crystal backlight and the uniformity of illumination;
the structure for eliminating the light intensity at the top of the mini-LED light source can effectively inhibit the light intensity at the top of the chip and improve the light efficiency uniformity, the MCF membrane 7 is thin, so that the thickness of the liquid crystal display can be controlled, the application range is wide, and the structure for eliminating the light intensity at the top of the mini-LED light source is simple in structure, convenient to operate and practical.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides an eliminate mini-LED light source top light intensity structure, a serial communication port, including mini-LED basic circuit board (1), reflector plate (3), UV glue (5), PET membrane (6) and MCF diaphragm (7), the upper end surface at mini-LED basic circuit board (1) is pasted in reflector plate (3), UV glues (5) coating at the upper end surface of reflector plate (3), PET membrane (6) are attached at the upper end surface that UV glued (5), MCF diaphragm (7) are attached at the upper end surface of PET membrane (6).
2. The structure of claim 1, wherein the structure for eliminating top light intensity of a mini-LED light source comprises: the outer surface of the upper end of the mini-LED basic circuit board (1) is fixedly provided with a plurality of groups of mini-LED chips (2) through a die bonder.
3. The structure of claim 2, wherein the structure for eliminating the top light intensity of the mini-LED light source comprises: the outer surface of the upper end of the reflector plate (3) is provided with a plurality of groups of mounting holes (4), and the mini-LED chip (2) is located inside the mounting holes (4).
4. The structure of claim 3, wherein the top light intensity structure of the mini-LED light source is: the size of the mounting hole (4) is larger than that of the mini-LED chip (2), and the UV glue (5) is further coated on the mini-LED chip (2).
5. The structure of claim 4, wherein the structure for eliminating the top light intensity of the mini-LED light source comprises: MCF diaphragm (7) include PE protection film (8), colloid (9) and PET film (11), colloid (9) cover is at the lower extreme surface of PET film (11), PE protection film (8) are pasted at the lower extreme surface of colloid (9).
6. The structure of claim 5, wherein the top light intensity structure of the mini-LED light source is: the outer surface of the lower end of the PET film (11) is printed with a plurality of groups of white dots (10).
7. The structure of claim 6, wherein the structure for eliminating the top light intensity of the mini-LED light source comprises: the white point (10) is positioned right above the mini-LED chip (2).
CN202110115488.2A 2021-01-28 2021-01-28 Structure for eliminating light intensity at top of mini-LED light source Pending CN112799253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110115488.2A CN112799253A (en) 2021-01-28 2021-01-28 Structure for eliminating light intensity at top of mini-LED light source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110115488.2A CN112799253A (en) 2021-01-28 2021-01-28 Structure for eliminating light intensity at top of mini-LED light source

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CN112799253A true CN112799253A (en) 2021-05-14

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CN202110115488.2A Pending CN112799253A (en) 2021-01-28 2021-01-28 Structure for eliminating light intensity at top of mini-LED light source

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113811076A (en) * 2021-08-03 2021-12-17 江苏运鸿辉电子科技有限公司 Display drive packaging and protecting system based on flexible printed circuit board

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113811076A (en) * 2021-08-03 2021-12-17 江苏运鸿辉电子科技有限公司 Display drive packaging and protecting system based on flexible printed circuit board

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