CN109116624A - Direct LED backlight mould group and liquid crystal display device - Google Patents
Direct LED backlight mould group and liquid crystal display device Download PDFInfo
- Publication number
- CN109116624A CN109116624A CN201810907894.0A CN201810907894A CN109116624A CN 109116624 A CN109116624 A CN 109116624A CN 201810907894 A CN201810907894 A CN 201810907894A CN 109116624 A CN109116624 A CN 109116624A
- Authority
- CN
- China
- Prior art keywords
- led light
- backboard
- emitting section
- mould group
- diffuser 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.)
- Withdrawn
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Classifications
-
- 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
- G02F1/133606—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
- G02F1/133608—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
- G02F1/133628—Illuminating devices with cooling means
Landscapes
- 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 kind of direct LED backlight mould groups, including at least one LED light-emitting section, at least one the LED light emitting source being located on LED light-emitting section, reflection unit, diffuser plate, at least one supporting structure of diffuser plate, backboard, one frame and one group of optical diaphragm, the backboard and frame accommodate reflection unit, LED light-emitting section, LED light emitting source, supporting structure of diffuser plate, diffuser plate and one group of optical diaphragm, the reflection unit has the reflecting surface being oppositely arranged with the incidence surface of diffuser plate, incidence surface of the light-emitting surface of LED light emitting source towards diffuser plate, reflection unit is being equipped with the hole to match with the LED light emitting source with LED light emitting source corresponding section, the structure of fixed LED light-emitting section is equipped on backboard with LED light-emitting section corresponding position, the LED light-emitting section is equipped with and institute State structure corresponding with the fixed structure of LED light-emitting section.Simplified assembling process of the present invention, reduces cost.
Description
Technical field
The present invention relates to a kind of backlight source module, in particular to a kind of direct LED backlight mould group and liquid crystal display dress
It sets.
Background technique
Liquid crystal display device has the characteristics that light weight, thickness are thin, low in energy consumption and radiation is small, has been widely used for information skill
The fields such as art, multimedia technology become the mainstream of various display devices.Since liquid crystal display panel itself does not shine, backlight is needed
Mould group provides light source for it.In general, backlight source module light source has cathode fluorescent tube (CCFL) and light emitting diode
(LED).Cathode fluorescent tube contains hazardous substance mercury, is undoubtedly a kind of injury, and cathode fluorescent tube service life for environmental protection
It is short, directly affect the service life of liquid crystal display device.Light emitting diode have the pollution-free, long-life, vibration resistance, shock resistance and
Free of contamination feature.
Therefore, the light source source using LED as backlight is the inexorable trend of liquid crystal display device development.LED is small
It is generally used on the liquid crystal display of size, such as mobile phone, PDA, laptop.In recent years due to LED technology
It is constantly progressive, the brightness of LED is made to have big promotion, LED has become the main of middle large scale liquid crystal backlight of display device light source
Selecting object, LED are being continuously increased as the demand of LCD device backlight light source.
Light source source of the LED as backlight source of liquid crystal display apparatus, in middle large scale liquid crystal display device, arrangement
It is to arrange a certain number of LED in the one or both sides or more of LCD device backlight unit, or in large scale liquid crystal
Straight-down negative is arranged in display device.
Fig. 1 is a kind of structural schematic diagram of liquid crystal display device of the prior art comprising direct LED backlight mould group.It should
Device includes backboard 10, the first reflection unit 20, LED light-emitting section 30, LED light emitting source 40, the second reflection unit 50, diffuser plate branch
Support structure 60,70, one groups of optical diaphragms 80 of diffuser plate, frame 90, front frame 95 and liquid crystal display 100.Backboard 10, frame 90 and front frame
95 receiving the first reflection units 20, LED light-emitting section 30, LED light emitting source 40, the second reflection unit 50, supporting structure of diffuser plate 60,
70, one groups of optical diaphragms 80 of diffuser plate and liquid crystal display 100.LED light-emitting section 30 is set on the first reflection unit 20, the second reflection
Device 50 is set on light-emitting section 30.
First reflection unit 20 is usually to be made of the poor material of thermal conductivity, and heat is to influence LED light emitting source to use the longevity
One of the major factor of life and optical characteristics.In existing direct LED backlight mould group, LED light-emitting section and LED light emitting source dissipate
Thermal effect is poor, and in order to improve the utilization rate for the light that LED light emitting source issues, the second reflection unit, work are arranged on LED light-emitting section
Skill is complicated, higher cost.
Summary of the invention
Goal of the invention: being directed to the above-mentioned problems of the prior art and deficiency, the object of the present invention is to provide it is a kind of it is straight under
Formula LED backlight mould group and liquid crystal display device, simplified assembling process reduce cost.
Technical solution: for achieving the above object, the first technical solution that the present invention uses is a kind of straight-down negative LED
Backlight source module, including at least one LED light-emitting section, at least one LED light emitting source and backboard for being located on LED light-emitting section,
Backboard is being equipped with an at least bayonet unit with LED light-emitting section corresponding position, and the LED light-emitting section is equipped with and bayonet unit phase
The fixation device of cooperation.
The shape of the bayonet unit and fixed device can be one of rectangle, triangle, trapezoidal, round, oval
Or the combination of more than one shapes.
The groove for accommodating the LED light-emitting section can be also equipped on the backboard with LED light-emitting section corresponding position.Further
It is reloaded into the groove of backboard after ground, the bayonet unit and the fixed device assembling.
For LED light-emitting section is accurately positioned in backboard or its groove, on the backboard or in groove with LED light-emitting section pair
Location structure can be equipped with by answering at position, the LED light-emitting section is equipped with hatch frame corresponding with the location structure.It is described
The shape of location structure and hatch frame can for one of arc-shaped, semicircular arc, rectangle, triangle, trapezoidal or it is a kind of with
The combination of upper shape.
LED backlight mould group may also include that reflection unit, diffuser plate, at least one supporting structure of diffuser plate, a frame
With one group of optical diaphragm, the backboard and frame receiving reflection unit, LED light-emitting section, LED light emitting source, supporting structure of diffuser plate,
Diffuser plate and one group of optical diaphragm, the reflecting surface that the reflection unit is oppositely arranged with the incidence surface of one and diffuser plate, LED hair
The light-emitting surface of light source towards diffuser plate incidence surface, reflection unit with LED light emitting source corresponding section be equipped with and the LED light emitting source
The hole to match.
The shape in the hole can be polygons and the other shapes such as round or rectangle.
Second of technical solution that the present invention uses is a kind of liquid crystal display device, including the direct-light type LED backlight
Source mould group and liquid crystal display, the backboard and frame accommodate the liquid crystal display.
The utility model has the advantages that present invention improves LED light-emitting section and LED light emitting sources in existing direct LED backlight mould group
Heat dissipation performance, save in existing direct LED backlight mould group and to improve the reflection dress of light source light utilization efficiency on LED light-emitting section
It sets, saves the screw or adhesive tape of fixed LED light-emitting section, simplified assembling process reduces cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of liquid crystal display device of the prior art comprising direct LED backlight mould group.
Fig. 2 is the sectional schematic diagram of direct LED backlight mould group of the present invention.
Fig. 3 is the top view of direct LED backlight mould group of the present invention.
Fig. 4 is first structural schematic diagram of LED backlight module backboard of the present invention.
Fig. 5 is the enlarged drawing of the first embodiment in the portion A in Fig. 4.
Fig. 6 is the enlarged drawing of second of embodiment in the portion A in Fig. 4.
Fig. 7 is the partial enlarged view of LED light-emitting section embodiment.
Fig. 8 is the structural schematic diagram that LED light-emitting section is mounted on backboard.
Fig. 9 is the enlarged drawing in the portion B in Fig. 8.
Figure 10 is second structural schematic diagram of LED backlight module backboard of the present invention.
Figure 11 is the enlarged drawing in the portion C in Figure 10.
Figure 12 is the exploded view of Fig. 2.
Wherein: 110, backboard, 112, reflection unit, 115, LED light-emitting section, 122, groove, 123, bayonet unit, 124, cut
Mouthful, 125, optical diaphragm, 128, diffuser plate, 130, frame, 135, circular hole, 160A, location structure, 160B, semicircular arc opening
Structure.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
It the present invention rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention each
The modification of kind equivalent form falls within the application range as defined in the appended claims.
It is embodiments of the present invention such as Fig. 2, Fig. 3 and Figure 12, which includes at least one (the present embodiment
It is 4) it is LED light-emitting section 115, at least one (the present embodiment is 9) LED light emitting source 118 on each LED light-emitting section 115, anti-
Injection device 112, diffuser plate 128, at least one supporting structure of diffuser plate 120,110, frames 130 of backboard and one group of optical film
Piece 125, the reflection unit 112 have a reflecting surface, and 112 reflecting surface of reflection unit is set to the incidence surface side of diffuser plate 128, and with expansion
The incidence surface that falls apart is oppositely arranged, and LED light emitting source 118 is oppositely arranged with diffuser plate 128, and LED light emitting source light-emitting surface is towards diffuser plate
128 incidence surface, (shape in hole is unlimited equipped with the circular hole 135 to match for 118 corresponding section of reflection unit 112 and LED light emitting source
In circle, can also be the polygons such as rectangle or other shapes), it is equipped with 115 corresponding position of LED light-emitting section on backboard 110
The groove 122 (while refering to Fig. 4) and bayonet unit 123 (while refering to Fig. 4 and Fig. 5) of LED light-emitting section 115 are accommodated, LED shines
Notch 124 (while refering to Fig. 7) is provided on item 115, when assembling LED light-emitting section 115, notch 124 on LED light-emitting section with
Bayonet unit 123 is fitted into the groove 122 of backboard 110 after aligning on backboard 110, and LED light-emitting section 115 is packed into backboard groove
After 122, displacement of the LED light-emitting section 115 relative to the groove 122 on backboard in the mobile setting of length direction, the movement of LED light-emitting section
LED light-emitting section 115 is fixed on backboard 110 by the displacement of setting by bayonet unit 123.
It is a structural schematic diagram of LED backlight module backboard such as Fig. 4, there is receiving LED light-emitting section 115 on backboard
Groove 122.
Such as Fig. 5, it is the portion A enlarged drawing in Fig. 4, is accommodated on backboard 110 in the groove 122 of LED light-emitting section 115 and be equipped with semi arch
Shape location structure 160A, certainly, the shape of the location structure is not limited to semicircular arc, can also be arc-shaped, rectangle, triangle
Shape, trapezoidal and more than one shapes combination.Backboard 110 is equipped with the bayonet unit 123 of rectangle, certainly, fixation LED hair
The shape of light strip structure is not limited to rectangle, can also be arc-shaped, semicircular arc, triangle, trapezoidal and more than one shapes
Combination etc. so that LED light-emitting section can be fixed in backboard without screw or adhesive tape.
It is the portion A enlarged drawing in Fig. 4 such as Fig. 6, backboard 110 is equipped with the another embodiment figure of bayonet unit 123, phase
For backboard 110, bayonet unit 123 is to raise upward, it is of course also possible to be recessed.
It is 115 embodiment partial enlarged view of LED light-emitting section such as Fig. 7, LED light-emitting section 115 is equipped with and positions on backboard
Corresponding semicircular arc hatch frame 160B, the LED light-emitting section 115 of structure 160A is equipped with right with fixed LED luminous bar structure 123
The rectangular slits structure 124 answered.
As shown in Figure 8 and Figure 9, be LED light-emitting section be mounted on backboard structural schematic diagram (the 2 width figure be plane signal
Figure), it is seen that LED light-emitting section is fixed on backboard.
As shown in Figure 10 and Figure 11, it can also be not provided with the groove of receiving LED light-emitting section 115 on backboard, and fixation is only set
LED luminous bar structure and location structure, LED light-emitting section are directly installed on backboard.
Direct LED backlight mould group of the present invention can also install liquid crystal display as liquid separately as light source applications
Crystal device.
Claims (9)
1. a kind of direct LED backlight mould group, including at least one LED light-emitting section, be located on LED light-emitting section at least one
LED light emitting source and backboard, it is characterized by:, it is characterised in that: backboard is equipped at least with LED light-emitting section corresponding position
One bayonet unit, the LED light-emitting section are equipped with the fixation device matched with bayonet unit.
2. direct LED backlight mould group according to claim 1, it is characterised in that: the bayonet unit and fixed device
Shape be one of rectangle, triangle, trapezoidal, round, oval or more than one shapes combination.
3. direct LED backlight mould group according to claim 1, it is characterised in that: on the backboard with LED light-emitting section pair
Answer the groove for being additionally provided at position and accommodating the LED light-emitting section.
4. direct LED backlight mould group according to claim 3, it is characterised in that: the bayonet unit and the fixation
It is reloaded into the groove of backboard after device assembling.
5. direct LED backlight mould group according to claim 1 or 2 or 4, it is characterised in that: the bayonet unit is convex
Protrusion on backboard, the fixed device are the notch matched with the protrusion.
6. direct LED backlight mould group according to claim 1, it is characterised in that: on the backboard with LED light-emitting section pair
It answers and is equipped with location structure at position, the LED light-emitting section is equipped with hatch frame corresponding with the location structure.
7. direct LED backlight mould group according to claim 6, it is characterised in that: the location structure and hatch frame
Shape be one of arc-shaped, semicircular arc, rectangle, triangle, trapezoidal or more than one shapes combination.
8. direct LED backlight mould group according to claim 1, it is characterised in that: LED backlight mould group further include: anti-
Injection device, diffuser plate, at least one supporting structure of diffuser plate, a frame and one group of optical diaphragm, the backboard and frame are received
Hold reflection unit, LED light-emitting section, LED light emitting source, supporting structure of diffuser plate, diffuser plate and one group of optical diaphragm, the reflection dress
Set with the reflecting surface being oppositely arranged with the incidence surface of diffuser plate, the light-emitting surface of LED light emitting source towards diffuser plate incidence surface, instead
Injection device is being equipped with the hole to match with the LED light emitting source with LED light emitting source corresponding section.
9. a kind of liquid crystal display device, including direct LED backlight mould group as claimed in any one of claims 1 to 8 and liquid
Crystalline substance screen, the backboard and frame accommodate the liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810907894.0A CN109116624A (en) | 2018-08-10 | 2018-08-10 | Direct LED backlight mould group and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810907894.0A CN109116624A (en) | 2018-08-10 | 2018-08-10 | Direct LED backlight mould group and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109116624A true CN109116624A (en) | 2019-01-01 |
Family
ID=64853025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810907894.0A Withdrawn CN109116624A (en) | 2018-08-10 | 2018-08-10 | Direct LED backlight mould group and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109116624A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109712575A (en) * | 2019-02-20 | 2019-05-03 | 昆山弘锦威电子有限公司 | A kind of ELED dynamic backlight source control system and control method |
| CN109782484A (en) * | 2019-01-24 | 2019-05-21 | 重庆京东方显示照明有限公司 | Backlight position limiting structure and backlight source module |
-
2018
- 2018-08-10 CN CN201810907894.0A patent/CN109116624A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782484A (en) * | 2019-01-24 | 2019-05-21 | 重庆京东方显示照明有限公司 | Backlight position limiting structure and backlight source module |
| CN109782484B (en) * | 2019-01-24 | 2022-02-25 | 重庆京东方显示照明有限公司 | Backlight source limiting structure and backlight source module |
| CN109712575A (en) * | 2019-02-20 | 2019-05-03 | 昆山弘锦威电子有限公司 | A kind of ELED dynamic backlight source control system and control method |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190101 |
|
| WW01 | Invention patent application withdrawn after publication |