CN209265142U - A kind of backlight module and liquid crystal display panel - Google Patents
A kind of backlight module and liquid crystal display panel Download PDFInfo
- Publication number
- CN209265142U CN209265142U CN201821994777.4U CN201821994777U CN209265142U CN 209265142 U CN209265142 U CN 209265142U CN 201821994777 U CN201821994777 U CN 201821994777U CN 209265142 U CN209265142 U CN 209265142U
- Authority
- CN
- China
- Prior art keywords
- backlight module
- led
- base board
- flexible base
- light
- 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.)
- Active
Links
Landscapes
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The utility model discloses a kind of backlight module and liquid crystal display panels.Wherein, backlight module, comprising: flexible base board；Drive circuit layer is located at the flexible base board side；LED array is located at the drive circuit layer and deviates from the flexible base board side；Quantum film covers the LED array.Backlight module and liquid crystal display panel provided by the embodiment of the utility model, by using flexible base board, drive circuit layer and LED array are set on it, then the LED light beam issued is excited using quantum film and is mixed to form white light, direct-light type LED backlight mould group is realized, ensure that light extraction efficiency；It simultaneously because using flexible base board instead of the light guide plate in traditional backlight module reduces the thickness of backlight module, can use that flexible base board is frivolous and flexible advantage, frivolous and flexible LED backlight mould group be made.
Description
Technical field
The utility model embodiment is related to field of display technology more particularly to a kind of backlight module and liquid crystal display panel.
Background technique
In flat-faced screen, liquid crystal display (Liquid Crystal Display, LCD) have become technology most at
It is ripe, support producer most, most widely used product type, LCD is required due to its non-self characteristics of luminescence by backlight module
Show its brightness, at present LED backlight mould group is broadly divided into side-light type (Edge Lighting) and straight-down negative according to illumination mode
(Bottom Lighting)。
The critical component of side light type LED back light mould group is by light emitting diode (Light Emitting Diode, LED) line
Property light emitting array, light guide plate, reflecting plate and diffuser plate are constituted.Light guide plate is made using special optical material, then with pole
The material of high reflectance and not extinction is printed in the bottom surface of light guide plate with ultraviolet (Ultraviolet, UV) screen printing technology
Upper light guiding points.LED linear array is arranged in the two sides of light guide plate, when light, which enters light guide plate, is mapped to each light guiding points, reflection
Light can be spread toward all angles, and light guide plate front is projected.By various densitys, light guiding points not of uniform size, light guide plate can be made
Uniformly light-emitting.
The major defect of sidelight type backlight module is that the coupling efficiency of LED and light guide plate in side is relatively low, in addition can not
Make large size panel.Certainly it can solve greatly by using the light guide plate of Intermediate Gray V slot and in the additional LED of V slot arranged beneath
The problem of size is applied, but the problem of causing is that the thickness of entire backlight module increases, and can not be bent.
Direct-light type LED backlight mould group is suitable for large-sized liquid crystal display panel, its structure is that the light that LED area array column issue is straight
It connects and upwardly propagates, keep light uniform by diffuser plate.Down straight aphototropism mode set is hardly limited by area, but its thickness is very
It is thick.It has made some progress about the improvement of down straight aphototropism mode set, can reduce by increasing reflective structure array in recent years
The thickness of mould group, but thickness is still much larger than side-light type mould group on the whole.The complicated journey of these reflective structures also increased mould group
Degree and cost, and curved surface can not be fabricated to.
Utility model content
The utility model provides a kind of backlight module and liquid crystal display panel, more frivolous and can flexible bending to realize
Backlight module adapts to the backlight demand of different display panels.
In a first aspect, the utility model embodiment provides a kind of backlight module, comprising:
Flexible base board；
Drive circuit layer is located at the flexible base board side；
LED array is located at the drive circuit layer and deviates from the flexible base board side；
Quantum film covers the LED array.
Optionally, the flexible base board thickness is less than or equal to 1.5 μm.
Optionally, the material of the flexible base board includes polyimides or polyethylene.
Optionally, the drive circuit layer includes power supply line and data circuit, and the LED in the LED array includes electricity
Source pin and control pin, the power pins are electrically connected with the power supply line, the control pin and the data circuit
Electrical connection；
The drive circuit layer further includes bridge structure, and the bridge structure setting is in the power supply line and the data
The infall of route, the power supply line are intersected by the bridge structure and data circuit insulation.
Optionally, the material of the power supply line is conductive silver glue, and the material of the data circuit is metal oxide.
Optionally, the LED array includes multiple LED of array arrangement, and the size range of the LED is 80 × 80 μm2-
200×300μm2。
Optionally, the spacing range of the LED is 1mm-3mm.
Optionally, the thickness range of the quantum film is 30-300 μm.
Optionally, the backlight module further includes metal backing, and the flexible base board is pasted away from the side of the LED array
It invests on the metal backing.
Optionally, the LED is blue-ray LED, is provided in the quantum film and issues the first of feux rouges under blue light excitation
Described in quantum dot and the second quantum dot for issuing green light under blue light excitation, first quantum dot and second quantum dot pass through
The blue light that blue-ray LED issues excites issued feux rouges and green light, and the blue light issued with the blue-ray LED obtains white light.
Second aspect, the utility model embodiment additionally provide a kind of liquid crystal display panel, including as first aspect is any
The backlight module.
Backlight module and liquid crystal display panel provided by the embodiment of the utility model, by using flexibility in backlight module
Drive circuit layer and LED array is arranged in substrate on it, then by beam excitation that LED array issues and is mixed using quantum film
Conjunction forms white light, realizes direct-light type LED backlight mould group, ensure that light extraction efficiency；Simultaneously because flexible base board is used, instead of
Light guide plate in traditional backlight module, reduces the thickness of backlight module, it is frivolous and flexible to can use flexible base board
Frivolous and flexible LED backlight mould group is made in advantage.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of backlight module provided by the embodiment of the utility model；
Fig. 2 is the schematic diagram of the section structure of the backlight module shown in Fig. 1 along AA '；
Fig. 3 is the structural schematic diagram of the drive circuit layer in backlight module shown in Fig. 1 in dotted line frame region；
Fig. 4 is sectional structure chart of the drive circuit layer shown in Fig. 3 along BB '；
Fig. 5 is the schematic diagram of the section structure of another backlight module provided by the embodiment of the utility model；
Fig. 6 is a kind of structure of liquid crystal display panel schematic diagram provided by the embodiment of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It further needs exist for
It is bright, part relevant to the utility model is illustrated only for ease of description, in attached drawing rather than entire infrastructure.
Fig. 1 is a kind of structural schematic diagram of backlight module provided by the embodiment of the utility model, and Fig. 2 is backlight shown in Fig. 1
Mould group is along the schematic diagram of the section structure of AA ', and with reference to Fig. 1 and Fig. 2, which includes: flexible base board 11；Drive circuit layer
12, it is located at 11 side of flexible base board；LED array 13 is located at the drive circuit layer 12 and deviates from the flexible base board 11 1
Side；Quantum film 14 covers the LED array 13.
Wherein, by preparing conductor wire by the modes such as printing, printing on flexible base board 11, to form driving electricity
Road, and solder joint is set in the driving circuit, LED is welded in the driving circuit, LED array 13 is formed, LED is driving
It can shine under the driving of circuit.However LED is usually monochromatic LED, such as would generally select blue led, needs to pass through quantum
The monochromatic LED monochromatic light issued repeatedly excite by film obtains the stronger high colour gamut color of stability, final to can be achieved
Backlight.Flexible base board 11 usually can be used organic flexible material and be made, and thickness is far smaller than conventional LED circuit board, and
And backlight is substantially reduced instead of the light guide plate in conventional backlit mould group by the combination of flexible base board 11 and quantum film 14
The thickness of mould group, while instead of the light guide plate of rigidity, realize flexible backlight.
Backlight module provided by the embodiment of the utility model is set on it by using flexible base board in backlight module
Drive circuit layer and LED array are set, the LED light beam issued is then excited and be mixed to form white light using quantum film, it is real
Show direct-light type LED backlight mould group, ensure that light extraction efficiency；Simultaneously because flexible base board is used, instead of traditional backlight mould
Light guide plate in group reduces the thickness of backlight module, can use that flexible base board is frivolous and flexible advantage, is made frivolous
And flexible LED backlight mould group.The demand that not only can satisfy different backlight applications, can also reduce to a certain extent
Production cost.
The material selection of flexible base board 11 should meet certain production requirement, such as form drive due to needing on flexible base board 11
Dynamic circuit layer 12, and need to weld LED chip in drive circuit layer 12, LED array layer 13 is formed, therefore needs flexible base
The material of plate 11 has the definitely characteristics such as corrosion-and high-temp-resistant, and optionally, the material of the flexible base board includes polyimides
(Polyimide, PI) or polyethylene (polyethylene, PE) etc..In addition, in order to realize the frivolous of backlight module and can
It is attached on other stiff members, the thickness that flexible base board 11 can be set is less than or equal to 1.5 μm.
Similarly, for quantum film 14, thickness also affects the thickness of the backlight module to a certain degree, optionally, amount
The thickness of sub- film 14 can be selected in 30-300 μ m.
Pass through the more frivolous flexible base board 11 and quantum film 13 of setting, it is ensured that the backlight module has certain soft
Toughness is applied during display panel actual, in order to which backlight module to be fixed on display panel, needs backlight module
Have metal plate frame to adapt to the structure of display panel, and is installed on the back side of display panel, therefore optionally, the utility model
The also settable metal backing of the backlight module of embodiment, and the flexible base board is attached at metal away from the side of LED array
On backboard.Obviously, the backlight module thicker relative to the thickness of rigidity, backlight module provided by the embodiment of the utility model are being tied
When closing metal plate frame, it is easier to be bonded, also be more convenient installation.
The utility model embodiment additionally provides the structure of drive circuit layer, and Fig. 3 is dotted line frame in backlight module shown in Fig. 1
The structural schematic diagram of drive circuit layer in region, Fig. 4 are sectional structure chart of the drive circuit layer shown in Fig. 3 along BB ', ginseng
Fig. 3 and Fig. 4 are examined, which includes power supply line 121 and data circuit 122, accordingly, in the LED array
LED includes power pins and control pin (not shown), and the power pins are electrically connected with the power supply line 121, institute
Control pin is stated to be electrically connected with the data circuit 122；The drive circuit layer 12 further includes bridge structure 123, the bridge
Structure 123 is set to the infall of the power supply line 121 and the data circuit 122, and the power supply line 121 passes through institute
Bridge structure 123 is stated to intersect with the data circuit 122 insulation.
Specifically, one pad can be set for each LED chip in drive circuit layer 12, include 1 in the pad, 2,
3,4 four pads, wherein 1 and 3 pads are connect with data circuit 122,2 and 4 pads are connect with power supply line 121, should
Four pads correspond to four pins of LED chip, and two power pins of LED chip and power supply line 121 weld, by supplying
Electric line 121 is powered, and two control pins and data circuit 122 weld, and provides control driving signal by data circuit 122.It drives
Power supply line 121 and data circuit 122 in dynamic circuit layer would be normally located at same layer, thus may exist in wiring and hand over
Crunode can pass through bridge structure 123 and insulation in order to avoid the position insulation of power supply line 121 and the intersection of data circuit 122
Structure 124 carry out transposition insulator, specifically, power supply line 121 with 122 infall of data circuit be arranged blocking district, and
Insulation system 124 is set in blocking district, is then connected the power supply line 121 of truncation by bridge structure 123.
Wherein, the power supply line 121 in driving circuit 12 and data circuit 122 can be by being arranged in substrate non-light-emitting area
Driving chip electric energy and electric signal are provided, those skilled in the art are it is understood that be not repeated herein.LED chip is parallel to
In power supply line 121, power supply line 121 can be formed using the lesser conductive silver glue of resistance value, to alleviate power supply line 121
Upper electric current generates more heat transfer when larger, influences the normal work of backlight module, and for data circuit 122, LED chip uses
Concatenated mode is connected on data circuit 121, and electric current is smaller, and in order to guarantee backlight display effect, data circuit 122
Can be used tin indium oxide (Indium tin oxide, ITO), indium gallium zinc (indium gallium zinc oxide,
) etc. IGZO metal conductive oxides film forms conductor wire by patterning, specifically, can pass through on flexible base board 11
The modes such as magnetron sputtering, hot evaporation form the metal conductive oxide film of flood, then utilize the techniques such as photoetching by conductive thin
Film is patterned, and specifically preparation process those skilled in the art can select according to the actual situation, is not limited herein
System.
Optionally, in order to guarantee backlight module uniform in light emission, the arrangement density and LED chip of LED chip in LED array
Size rationally designed.The preferred mini LED of LED in backlight module provided by the utility model, and it is optional
Ground, optional 80 × 80 μm of LED size range2-200×300μm2.In addition, the spacing of LED chip also determines the row of LED chip
Cloth density, the utility model embodiment has equally carried out theoretical calculation to the arrangement density of LED chip, optionally, between LED
It should be in 1mm-3mm away from range.
Fig. 5 is the schematic diagram of the section structure of another backlight module provided by the embodiment of the utility model, with reference to Fig. 5,
In, for the LED chip in LED array, preferably blue-ray LED, the corresponding needs of quantum film 14 are provided in blue light 10 at this time
Lower the first quantum dot 141 for issuing feux rouges 20 of excitation and the second quantum dot 142 that green light 30 is issued under the excitation of blue light 10, institute
It states the blue light 10 that the first quantum dot 141 and second quantum dot 142 are issued through the blue-ray LED and excites issued feux rouges 20
With green light 30, the blue light 10 issued with the blue-ray LED is mixed to get white light.
The utility model embodiment additionally provides a kind of liquid crystal display panel, and Fig. 6 is provided by the embodiment of the utility model
A kind of structure of liquid crystal display panel schematic diagram, with reference to Fig. 6, which includes any one back in above-described embodiment
Optical mode group 100.Since the liquid crystal display panel uses the backlight module in above-described embodiment, the liquid crystal display panel is same
Sample has the beneficial effect of backlight module.The liquid crystal display panel can be applied as ultra-thin vehicle-carrying display screen etc., not do herein
Limitation.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments
The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from
It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended
Scope of the claims determine.
Claims (10)
1. a kind of backlight module characterized by comprising
Flexible base board；
Drive circuit layer is located at the flexible base board side；
LED array is located at the drive circuit layer and deviates from the flexible base board side；
Quantum film covers the LED array, wherein the drive circuit layer includes power supply line and data circuit, the LED
LED in array includes power pins and control pin, and the power pins are electrically connected with the power supply line, and the control is drawn
Foot is electrically connected with the data circuit；The drive circuit layer further includes bridge structure, and the bridge structure setting is in the confession
The infall of electric line and the data circuit, the power supply line are handed over by the bridge structure and data circuit insulation
Fork.
2. backlight module according to claim 1, which is characterized in that the flexible base board thickness is less than or equal to 1.5 μm.
3. backlight module according to claim 1, which is characterized in that the material of the flexible base board include polyimides or
Polyethylene.
4. backlight module according to claim 1, which is characterized in that the material of the power supply line is conductive silver glue, institute
The material for stating data circuit is metal oxide.
5. backlight module according to claim 1, which is characterized in that the LED array includes the multiple of array arrangement
The size range of LED, the LED are 80 × 80 μm2-200×300μm2。
6. backlight module according to claim 1, which is characterized in that the spacing range of the LED is 1mm-3mm.
7. backlight module according to claim 1, which is characterized in that the thickness range of the quantum film is 30-300 μm.
8. backlight module according to claim 1, which is characterized in that the backlight module further includes metal backing, described
Flexible base board is attached on the metal backing away from the side of the LED array.
9. backlight module according to claim 1, which is characterized in that the LED is blue-ray LED, is set in the quantum film
It is equipped with the first quantum dot for issuing feux rouges under blue light excitation and issues the second quantum dot of green light under blue light excitation, described the
Blue light that one quantum dot and second quantum dot are issued through the blue-ray LED excites issued feux rouges and green light, and described
The blue light that blue-ray LED issues obtains white light.
10. a kind of liquid crystal display panel, which is characterized in that including the backlight module as described in claim 1-9 is any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821994777.4U CN209265142U (en) | 2018-11-29 | 2018-11-29 | A kind of backlight module and liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821994777.4U CN209265142U (en) | 2018-11-29 | 2018-11-29 | A kind of backlight module and liquid crystal display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209265142U true CN209265142U (en) | 2019-08-16 |
Family
ID=67565397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821994777.4U Active CN209265142U (en) | 2018-11-29 | 2018-11-29 | A kind of backlight module and liquid crystal display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209265142U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111752045A (en) * | 2020-07-15 | 2020-10-09 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN114265233A (en) * | 2021-10-26 | 2022-04-01 | 深圳市中深光电股份有限公司 | Bendable high-color-gamut light-emitting module, backlight device and curing step |
-
2018
- 2018-11-29 CN CN201821994777.4U patent/CN209265142U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111752045A (en) * | 2020-07-15 | 2020-10-09 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN114265233A (en) * | 2021-10-26 | 2022-04-01 | 深圳市中深光电股份有限公司 | Bendable high-color-gamut light-emitting module, backlight device and curing step |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8393775B2 (en) | Backlight unit and display device | |
| JP4368874B2 (en) | Backlight unit and liquid crystal display device using the same | |
| KR101172253B1 (en) | Backlight unit for liquid crystal display device | |
| US8687142B2 (en) | Backlight unit comprising a bottom cover including an embossing portion that overlaps with a portion of an LED package and liquid crystal display using the same | |
| EP2068378B1 (en) | LED backlight for a liquid crystal display device | |
| WO2021000472A1 (en) | Mini led backlight panel and backlight module | |
| JP2008108734A (en) | Backlight assembly and display device provided with the same | |
| CN108445675A (en) | Backlight module and display device | |
| KR20120066322A (en) | Liquid crystal display device | |
| EP4063946A1 (en) | Display device | |
| CN209265142U (en) | A kind of backlight module and liquid crystal display panel | |
| CN108732817A (en) | Backlight module and display device | |
| KR102383645B1 (en) | Display device | |
| JP5866091B2 (en) | Display device | |
| CN106970485B (en) | Display device | |
| TW200832016A (en) | Light-emitting device and planar light-emitting device | |
| CN114488594B (en) | Display apparatus | |
| CN107290899A (en) | Side entrance back module and liquid crystal display | |
| CN107505771A (en) | Backlight module and the liquid crystal display with the backlight module | |
| WO2020177162A1 (en) | Led frame, led device, and side-emitting type backlight module | |
| KR102416031B1 (en) | Backlight unit and display device including the same | |
| CN103574401B (en) | Back lighting device and liquid crystal display device including the back lighting device | |
| CN108458280A (en) | Backlight assembly and its assemble method, display device | |
| CN213581410U (en) | Composite optical diaphragm, backlight module and display screen | |
| KR20080012511A (en) | Led unit, backlight unit using the same and display device having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |