CN103913889B - Liquid crystal display device with built-in light source - Google Patents
Liquid crystal display device with built-in light source Download PDFInfo
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- CN103913889B CN103913889B CN201210593822.6A CN201210593822A CN103913889B CN 103913889 B CN103913889 B CN 103913889B CN 201210593822 A CN201210593822 A CN 201210593822A CN 103913889 B CN103913889 B CN 103913889B
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Abstract
The invention discloses a liquid crystal display device. The liquid crystal display device comprises an upper substrate, a lower substrate and a liquid crystal layer, wherein the upper substrate is opposite to the lower substrate, and the liquid crystal layer is mounted between the upper substrate and the lower substrate; a first polarized layer is mounted at the outer side of the upper substrate, a second polarized layer is mounted at the outer side of the lower substrate, a light emitting layer is mounted at the inner side of the lower substrate, and a diffuse reflection layer is mounted at the lower side of the second polarized layer. By means of the liquid crystal display device, the display device is lighter and thinner, the problem that a light source and a polarizer should be simultaneously built in is solved, the polarizer is attached to the outer side of the substrate, and accordingly the technique is simplified, and the product yield is improved.
Description
Technical field
The present invention relates to field of liquid crystal display, more particularly to a kind of liquid crystal display device for being built-in with light source.
Background technology
Liquid crystal display device (LCD, Liquid Crystal Display) as a kind of important FPD mode, closely
There are development at full speed more than ten years, and it has many merits such as thin fuselage, power saving, radiationless, low energy consumption, is widely used in electricity
Depending on, the modernization information equipment such as computer, mobile phone, digital camera.Liquid crystal display device on existing market is most of for backlight
Type liquid crystal display device, it includes liquid crystal display panel and backlight module (backlight module).Liquid crystal display panel
Operation principle is to place liquid crystal molecule in the middle of the parallel glass substrate of two panels, whether is powered to controlling liquid crystal by glass substrate
Molecular changes direction, generation picture is reflected by the light of backlight module.
Usual liquid crystal display panel is by color filter film (CF, Color Filter) substrate, TFT (Thin Film
Transistor) substrate, the liquid crystal (LC, Liquid Crystal) that is sandwiched between colorized optical filtering ilm substrate and TFT substrate and close
Sealing frame (Sealant) is constituted, and its moulding process is generally comprised：Leading portion array (Array) processing procedure (film, gold-tinted, etching and stripping
Film), stage casing (drive IC with printing electricity into box (Cell) processing procedure (TFT substrate and CF baseplate-laminatings) and back segment module group assembling processing procedure
Road plate is pressed).Wherein, leading portion Array processing procedures are mainly to form TFT substrate, in order to control the motion of liquid crystal molecule；Stage casing
Cell processing procedures are mainly to group TFT substrate and CF substrates, and toward irrigating liquid crystal between the two；Back segment module group assembling processing procedure is mainly
The integration of IC pressings and printed circuit board (PCB) is driven, and then drives liquid crystal molecule to rotate, display image.
With the development of science and technology, people are also improving constantly to display demand, lighter and thinner display device is people institute
Pursue, and in traditional liquid crystal display device, backlight module occupies the thickness of the nearly half of display device, in order to reduce backlight mould
The shared space of group, such as OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) and QLED
(Quantum Dot Light Emitting Diode, light emitting diode with quantum dots) this kind of self-luminous Display Technique is people institute
Pay attention to.
OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) Display Technique has self luminous
Characteristic, using very thin coating of organic material, when there is electric current to pass through, these organic materials will be excited it is luminous, due to
The visibility of OLED display and brightness are all higher, and fast response time, lightweight, thickness of thin, simple structure, low cost,
It is also had an optimistic view of by professional always, but the process yields of OLED are also always the difficulty of the technology volume production.
QLED (Quantum Dot Light Emitting Diode, light emitting diode with quantum dots) is the hair that can be excited
The semiconductor crystal of the nano-scale rank of light, when under visible ray or ultraviolet light (luminescence generated by light,
Photoluminescence) or when being passed through electric current (electroluminescent, electroluminescence), it will send bright and have
The visible ray of color purity high.
Currently, a solution based on technology of quantum dots is to be, by quantum dot rail bar (Quantum Dot
Rail) it is arranged between light guide plate and backlight, visible ray is sent exposed to the light of backlight outgoing by quantum dot, with
Just it is mutually compatible with backlight module.But the structure will influence the coupling efficiency of light guide plate.Additionally, another solution be by
Quantum dot film (Quantum Dot Film) is arranged between the optical thin film below liquid crystal module and light guide plate, but the knot
Requirement of the structure to optical thin film is higher, and when it is applied to smart mobile phone occasion, simple quantum dot film thickness just reaches
0.2mm, and still need single backlight as photoexcitation light source, this for the slimming requirement of smart mobile phone, still
So having is worth improving and improved place.
Be the lighter and thinner liquid crystal display device of design, in the prior art, such as patent US11267972, using OLED as
Light source, is built in liquid crystal layer, so as to instead of backlight module part, reaches thinning purpose, but the liquid crystal display device
Due to needing to be polarised light in light incidence liquid crystal, therefore need that polarizer is also made in the inside of liquid crystal cell, specially liquid crystal point
Position between sublayer and light source, which results in the complexity and exploitativeness of technique.
In view of this, a kind of liquid crystal display how is designed, to efficiently solve the above-mentioned defect or deficiency for referring to, is
A person skilled problem urgently to be resolved hurrily in the industry.
The content of the invention
The present invention proposes that a kind of liquid crystal display structure can solve above technical problem, and realizes lighter and thinner slim
Change.
The liquid crystal display device that the present invention is provided, it is characterised in that the liquid crystal display device includes upper substrate and lower base
Plate, the upper substrate and infrabasal plate, the upper substrate and infrabasal plate are oppositely arranged, and are arranged between upper substrate and infrabasal plate
Liquid crystal layer；Wherein,
The first polarizing layer is provided with the outside of the upper substrate, the second polarizing layer is provided with the outside of the infrabasal plate；
Also, it is provided with luminescent layer on the inside of the infrabasal plate；The second polarizing layer downside is provided with diffusive reflective layer.
Preferably, the material of the luminescent layer is luminous organic material or phosphor.
Preferably, the luminescent layer is white light, or, the luminescent layer is RGB three-color light sources.
Preferably, the structure of the luminescent layer is bottom emitting structure.
Preferably, the luminescent layer is rearranged by multiple light emitting source array.
Preferably, the luminescent layer top is provided with an encapsulated layer.
Preferably, the encapsulation layer material is SiO2、Al2O3、TiO2、Ta2O5、Y2O3、HfO2、Nb2O5、MgO、SiNx、
AlN。
Preferably, the mode that the encapsulation is realized is the thin-film package carried out with technique for atomic layer deposition.
Preferably, the encapsulated layer is individual layer, the superposition of the different encapsulation layer materials of double-deck or multilayer.
Preferably, the alternating superposition for being superposed to inorganic material film and organic material film of the different materials.
Preferably, the encapsulated layer top is provided with diffusion layer.
Preferably, the thickness of diffusion layer is 2-10 μm.
Preferably, the material of the diffusion layer is PDLC.
Preferably, color film layer is provided with above the inner side of infrabasal plate, the luminescent layer, in the inner side of upper substrate, institute
State and tft array is provided with above liquid crystal layer；Or, TFT gusts is provided with below the inner side of infrabasal plate, the liquid crystal layer
Row；Color film layer is provided with above the inner side of upper substrate, the liquid crystal layer.
Preferably, the color film layer top is provided with flatness layer.
Preferably, the flatness layer thickness is 2-5 μm.
Preferably, the flatness layer is temperature-sensitive organic material, is made up of organic polymer, organic monomer and thermal cross-linking agent.
Preferably, the diffusive reflective layer is polyester film diaphragm.
Preferably, first polarizing layer, second polarizing layer are rotatory polarization piece.
The liquid crystal display device that the present invention is provided, the advantage is that：
1st, luminescent layer is made in liquid crystal layer, display device gentlier, is more thinned；
2nd, built-in light source is solved while needing to have accomplished polarizer sheet sticking the built-in barrier of polaroid in outside substrate
Side, so as to simplify technique, increased the production and yield of product；
3rd, display brightness is improved, manufacturing cost is reduced.
Brief description of the drawings
The schematic diagram of the liquid crystal display device that Fig. 1 is provided for first embodiment of the invention；
The schematic diagram of another liquid crystal display device that Fig. 2 is provided for first embodiment of the invention；
The schematic diagram of the liquid crystal display device that Fig. 3 is provided for second embodiment of the invention；
The schematic diagram of the liquid crystal display device that Fig. 4 is provided for third embodiment of the invention；
Fig. 5 is the top view of luminescent layer in third embodiment of the invention.
Specific embodiment
Although being described in more detail to the present invention below with reference to accompanying drawings, it is preferable to carry out which show of the invention
Example, it should be understood that those skilled in the art can modify on the basis of the description, and still can realize the present invention
Advantageous effects.Therefore, following description is appreciated that the extension to the thinking of those skilled in the art, and is not intended as
Limitation of the present invention.
For clarity, not describing whole features of practical embodiments.In the following description, it is not described in detail known function
And structure, because they can make the present invention chaotic due to unnecessary details.Opening in any practical embodiments should be thought
In hair, it is necessary to make a large amount of implementation details to realize the specific objective of developer, such as according to relevant system or relevant business
Limitation, another embodiment is changed into by one embodiment.Additionally, it should think that this development is probably complicated and expends
Time, but it is only for a person skilled in the art routine work.In the following passage referring to the drawings by way of example
The present invention is more specifically described.To be become apparent from according to following explanation and claims main points of the invention and feature.Need explanation
, accompanying drawing in the form of simplifying very much and uses non-accurately ratio, is only used to conveniently, clearly aid in illustrating originally
The purpose of inventive embodiments.
First embodiment：
Refer to Fig. 1, the schematic diagram of the liquid crystal display device that Fig. 1 is provided for first embodiment of the invention, the liquid crystal
Showing device includes：
Infrabasal plate 103, upper substrate 113, the upper substrate 103 and infrabasal plate 113 are oppositely arranged；Wherein,
The outside of the upper substrate 113 is provided with the first polarizing layer 114, and the outside of the infrabasal plate 103 is provided with second
Polarizing layer 102, and the polarizing layer 102 of first polarizing layer 114 and second is set to rotatory polarization piece；
Also, the inner side of the infrabasal plate 103 is provided with luminescent layer 104, in the first embodiment, luminescent layer 104 is
OLED luminescent devices, are used as light source and produce white light.The OLED is bottom emitting structure, and its luminescent material is organic hair
The basic structure of luminescent material, wherein OLED be by one it is thin, transparent and tool characteristic of semiconductor indium tin oxide (ITO,
Indium Tin Oxides), it is connected with the anode of signal source, along with another metallic cathode, the knot of the similar sandwich of composition
Structure.Included in total layer：Anode, hole injection layer (HIL), hole transmission layer (HTL), luminescent layer (EL), electronics are passed
Defeated layer (ETL), electron injecting layer (EIL) and negative electrode.When signal is supplied to appropriate electric current, anode hole will with negative electrode electric charge
It is combined in luminescent layer, is released energy in the form of emitting beam.
In the luminescent layer 104, possess multiple OLEDs, the multiple OLED is arranged in arrays.
The downside of second polarizing layer 102 is provided with diffusive reflective layer 101, and diffusive reflective layer 101 is PET film piece, is lighted
The light sources that send of layer 104 turn into after the second polarizing layer 102 through infrabasal plate 103 rotatory polarization again by diffusive reflective layer 101 by its
Reflect back, that is, observe position.
The top of above-mentioned luminescent layer 104 is provided with encapsulated layer 105, encapsulated layer 105 is deposited using technique for atomic layer deposition
Individual layer, bilateral or multilayered film material, be used to protect luminescent layer 104, its is intercepted aqueous vapor, oxygen and other elemental gas,
So as to improve the life-span.
The diffusion layer 106 of the top of encapsulated layer 105 is arranged at, the thickness of diffusion layer 106 is about 2 μm, its material is polymer
Dispersed LCD, plays a part of the finish side homogenization for reflecting diffusive reflective layer 101 to come.
Color film layer 107, flatness layer 108, the first orientation film layer are disposed with from bottom to top in the top of diffusion layer 106
109th, liquid crystal layer 110, the second orientation film layer 111, tft array layer 112, wherein, about 2 μm of the thickness of flatness layer 108, and put down
The material of smooth layer 108 is temperature-sensitive organic material, is made up of organic polymer, organic monomer and thermal cross-linking agent.Said structure and work
With identical with the effect of each layer in liquid crystal display device in the prior art, will not be described here.
The liquid crystal display structure that the present embodiment is provided can be used to show coloured image, the advantage is that：
The 1st, luminescent layer is built in the inner side of infrabasal plate, liquid crystal display device gentlier, is more thinned；
The 2nd, down polaroid is arranged at the outside of infrabasal plate, and a diffusive reflective layer is set in the downside of down polaroid, made
The light of built-in luminescent layer transmitting reenters liquid crystal layer after scattered reflection, solves built-in light source while needing polarisation
The built-in barrier of piece, so as to simplify technique, increased the yield of product.
It should be pointed out that the liquid crystal display device shown in first embodiment is only a kind of citing and non-limiting.Optionally,
In the present embodiment, the material of the luminescent layer 104 can be organic material OLED or inorganic material QLED；
Optionally, in the present embodiment, the material of the encapsulated layer 105 can SiO2、Al2O3、TiO2、Ta2O5、Y2O3、
HfO2、Nb2O5、MgO、SiNx, AlN etc. can play the non-porous dense material of encapsulation effect；Also, the encapsulated layer 105 can be with
It is the superposition of above different materials, wherein, the best results of the alternating superposition of inorganic material and organic material.
Optionally, in the present embodiment, the optional scope of the thickness of the diffusion layer 106 is 2-10 μm；
Optionally, in other embodiments, tft array layer can be exchanged with color film layer position, specifically, such as Fig. 2 institutes
Show, the another embodiment of the liquid crystal display device that Fig. 2 is provided for the present invention.As illustrated, it is different with first embodiment it
Place is that tft array layer 212 is located at the lower section of liquid crystal layer 210, and color film layer 207 is located at the top of liquid crystal layer 210, can also play
With first embodiment identical technique effect.
Second embodiment：
Fig. 3 is refer to, it illustrates the sectional view of the liquid crystal display device of second embodiment of the invention.Second embodiment
In, luminescent layer 304 is arranged at the inner side of infrabasal plate 303, down polaroid 302 is arranged at outside the outside of infrabasal plate 303, and will
Diffusive reflective layer 301 is arranged on the lower section of down polaroid 302, is liquid using the light of the Refl-Luminous of reflecting layer 301 layer 304
Crystal layer 310 provides light source.
Below it is all identical with the first implementation, it is not described in detail herein, and first embodiment difference is, second
In embodiment, luminescent layer 304 is the OLED of the three coloured light that multiple can launch R (red is red) G (green is green) B (blue is blue)
Or QLED devices, the OLED or QLED devices be arranged in arrays, each OLED or QLED devices correspondence
One pixel cell, shows different colors, can save color film layer, concrete structure as shown in figure 3, on diffusion layer 306 directly
Orientation film layer 309 is set.
Compared with first embodiment, due to eliminating color film layer manufacturing process, second embodiment can be produced gentlier, thinner
The liquid crystal display device of type, while can be cost-effective with Simplified flowsheet processing procedure, increase yield.
3rd embodiment：
Fig. 4 is refer to, it illustrates the sectional view of the liquid crystal display device of third embodiment of the invention.With first embodiment
Compare, the structure that the present embodiment is provided is applied to small size liquid crystal display device, the light source in luminescent layer 404 is arranged on liquid crystal
The side of display device, it is possible to reduce quantity of light source, reduces cost, and due in the middle of panel no light source blocking, can be with
Improve display brightness.
It should be pointed out that the liquid crystal display structure shown in 3rd embodiment is only a kind of citing and non-limiting.Optionally,
In the present embodiment, the side of the luminescent layer 404 is two sides in left and right, and other are may also be arranged in other embodiments
Side.
In sum, although the present invention is disclosed as above with preferred embodiment, and so it is not limited to the present invention, ability
The technical staff in domain can do various changes and retouching, therefore protection model under the premise without departing from the spirit and scope of the present invention
Enclose and be defined by claim of the invention.
Claims (19)
1. a kind of liquid crystal display device, it is characterised in that including：
Upper substrate and infrabasal plate, the upper substrate and infrabasal plate are oppositely arranged, and are arranged between upper substrate and infrabasal plate
Liquid crystal layer；Wherein,
The first polarizing layer is provided with the outside of the upper substrate, the second polarizing layer is provided with the outside of the infrabasal plate；
Also, it is provided with luminescent layer on the inside of the infrabasal plate；The second polarizing layer downside is provided with diffusive reflective layer.
2. liquid crystal display device as claimed in claim 1, it is characterised in that the material of the luminescent layer is luminous organic material
Or phosphor.
3. liquid crystal display device as claimed in claim 1, it is characterised in that the luminescent layer is white light, or, it is described luminous
Layer is RGB three-color light sources.
4. liquid crystal display device as claimed in claim 1, it is characterised in that the structure of the luminescent layer is bottom emitting structure.
5. liquid crystal display device as claimed in claim 1, it is characterised in that the luminescent layer is arranged by multiple light emitting source array
Composition.
6. liquid crystal display device as claimed in claim 1, it is characterised in that the luminescent layer top is provided with an encapsulated layer.
7. liquid crystal display device as claimed in claim 6, it is characterised in that the encapsulation layer material is SiO2、Al2O3、TiO2、
Ta2O5、Y2O3、HfO2、Nb2O5、MgO、SiNx、AlN。
8. liquid crystal display device as claimed in claim 6, it is characterised in that the mode that encapsulation is realized is to use ald skill
The thin-film package that art is carried out.
9. liquid crystal display device as claimed in claim 7, it is characterised in that encapsulated layer is individual layer, double-deck or multilayer is different
The superposition of the encapsulation layer material.
10. liquid crystal display device as claimed in claim 9, it is characterised in that the different materials are superposed to inorganic material
The alternating superposition of film and organic material film.
11. liquid crystal display devices as claimed in claim 6, it is characterised in that the encapsulated layer top is provided with diffusion layer.
12. liquid crystal display devices as claimed in claim 11, it is characterised in that the thickness of diffusion layer is 2-10 μm.
13. liquid crystal display devices as claimed in claim 11, it is characterised in that the material of the diffusion layer disperses for polymer
Liquid crystal.
14. liquid crystal display devices as claimed in claim 1, it is characterised in that in the inner side of infrabasal plate, the luminescent layer it is upper
Side is provided with color film layer, and tft array is provided with above the inner side of upper substrate, the liquid crystal layer；Or, in infrabasal plate
Side, tft array is provided with below the liquid crystal layer；Color film layer is provided with above the inner side of upper substrate, the liquid crystal layer.
15. liquid crystal display devices as claimed in claim 14, it is characterised in that the color film layer top is provided with flatness layer.
16. liquid crystal display devices as claimed in claim 15, it is characterised in that the flatness layer thickness is 2-5 μm.
17. liquid crystal display devices as claimed in claim 15, it is characterised in that the flatness layer is temperature-sensitive organic material, by
Organic polymer, organic monomer and thermal cross-linking agent composition.
18. liquid crystal display devices as claimed in claim 1, it is characterised in that the diffusive reflective layer is polyester film diaphragm.
19. liquid crystal display devices as claimed in claim 1, it is characterised in that first polarizing layer, second polarizing layer are
Rotatory polarization piece.
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| CN201210593822.6A CN103913889B (en) | 2012-12-31 | 2012-12-31 | Liquid crystal display device with built-in light source |
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| CN103913889B true CN103913889B (en) | 2017-05-24 |
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| CN104112408A (en) * | 2014-08-07 | 2014-10-22 | 上海和辉光电有限公司 | OLED (organic light-emitting diode) panel |
| TWI544620B (en) * | 2014-12-30 | 2016-08-01 | 業鑫科技顧問股份有限公司 | Display panel |
| KR102373200B1 (en) * | 2015-07-14 | 2022-03-17 | 삼성전자주식회사 | A display assembly and a displaying apparatus using the same |
| CN105334667A (en) * | 2015-12-04 | 2016-02-17 | 深圳市华星光电技术有限公司 | Liquid crystal display device and array substrate thereof and method for manufacturing array substrate |
| CN105278166A (en) * | 2015-12-04 | 2016-01-27 | 深圳市华星光电技术有限公司 | liquid crystal display device, array substrate thereof and manufacturing method of array substrate |
| CN205643763U (en) * | 2016-03-30 | 2016-10-12 | 乐视控股（北京）有限公司 | Self -luminous light guide plate, backlight unit and display device |
| CN106773321A (en) * | 2017-02-17 | 2017-05-31 | 深圳市华星光电技术有限公司 | A kind of light and thin type liquid crystal display device and its backlight module and preparation method |
| US20190033658A1 (en) * | 2017-07-27 | 2019-01-31 | Advanced Optoelectronic Technology, Inc. | Liquid crystal display module |
| CN108388049A (en) * | 2018-03-19 | 2018-08-10 | 维沃移动通信有限公司 | A kind of backlight module and mobile terminal |
| CN114779521A (en) * | 2021-12-13 | 2022-07-22 | 深圳市华鼎星科技有限公司 | Dot-matrix backlight module and display screen using same |
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