CN109164628A - display panel and display device - Google Patents

display panel and display device Download PDF

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Publication number
CN109164628A
CN109164628A CN201811133635.3A CN201811133635A CN109164628A CN 109164628 A CN109164628 A CN 109164628A CN 201811133635 A CN201811133635 A CN 201811133635A CN 109164628 A CN109164628 A CN 109164628A
Authority
CN
China
Prior art keywords
transparent
display panel
intermediate layer
substrate
layer
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.)
Granted
Application number
CN201811133635.3A
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Chinese (zh)
Other versions
CN109164628B (en
Inventor
查宝
李吉
陈孝贤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL Huaxing Photoelectric Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to CN201811133635.3A priority Critical patent/CN109164628B/en
Priority to PCT/CN2018/113283 priority patent/WO2020062418A1/en
Publication of CN109164628A publication Critical patent/CN109164628A/en
Application granted granted Critical
Publication of CN109164628B publication Critical patent/CN109164628B/en
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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509Filters, e.g. light shielding masks
    • G02F1/133512Light shielding layers, e.g. black matrix
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1343Electrodes
    • G02F1/134309Electrodes characterised by their geometrical arrangement

Abstract

The present invention provides a kind of display panel and display device, its COA upper substrate includes: transparent substrate, black-matrix layer, setting is on the transparent substrate, transparent intermediate layer is arranged on the exposed region of transparent substrate, transparent electrode layer, it is arranged in black-matrix layer and transparent intermediate layer, the optical index of transparent intermediate layer is between the optical index of the transparent substrate and the optical index of the transparent electrode layer;ITO is avoided based on transparent intermediate layer so directly to contact with glass substrate, be can be very good to reduce the reflectivity that light goes out in ITO, is alleviated the existing display panel technical problem reflective there are the contact position of ITO and glass substrate.

Description

Display panel and display device
Technical field
The present invention relates to technical field of liquid crystal display more particularly to a kind of display panel and display devices.
Background technique
Liquid crystal display is mainly divided into COA (Color Filter On Array) technology and Non-COA technology at present, COA is to be coated on chromatic photoresist on completed array (Array) to form chromatic filter layer, can improve conventional color optical filtering The low problem of piece aperture opening ratio.
As shown in Figure 1, the upper substrate (i.e. COA upper substrate) of the COA display panel based on light orientation includes: transparent substrate (such as glass substrate), black-matrix layer BM and transparent electrode layer ITO as public electrode, black-matrix layer BM are formed in On transparent substrate, transparent electrode layer ITO is formed in black-matrix layer BM and the exposed region of transparent substrate (is not provided with the area of BM Domain) on, in the contact position of ITO and glass substrate, due to the larger (refraction of glass substrate of refractive index of the two to light Rate n=1.50, the refractive index n=1.80 of ITO), ITO can be reflective, all can to the light transmission rate and contrast of liquid crystal display It has a certain impact.
There are the technical problems that the contact position of ITO and glass substrate can be reflective for i.e. existing display panel.
Summary of the invention
The present invention provides a kind of display panel and display device, to alleviate ITO existing for existing display panel and glass The reflective technical problem of the contact position of substrate.
To solve the above problems, technical solution provided by the invention is as follows:
The embodiment of the invention provides a kind of display panels comprising: TFT lower substrate and with the TFT lower substrate pair The COA upper substrate that should be arranged;The COA upper substrate includes:
Transparent substrate;
Black-matrix layer is arranged on the transparent substrate;
Transparent intermediate layer is arranged on the exposed region of the transparent substrate;
Transparent electrode layer is arranged in the black-matrix layer and the transparent intermediate layer;
Wherein, optical index and the transparent electrode of the optical index of the transparent intermediate layer between the transparent substrate Between the optical index of layer.
According to one preferred embodiment of the present invention, the thickness of the transparent intermediate layer is equal to the thickness of the black-matrix layer.
According to one preferred embodiment of the present invention, light nanoparticle is added in the transparent intermediate layer.
According to one preferred embodiment of the present invention, the smooth nanoparticle includes for absorbing the first of yellow orange light the smooth nanoparticle At least one of son and the second smooth nanoparticle for absorbing dark green light.
According to one preferred embodiment of the present invention, the smooth nanoparticle includes rhodamine derivative.
According to one preferred embodiment of the present invention, the smooth nanoparticle includes metal nanoparticle-rhodamine derivative The mixed system of dyestuff.
According to one preferred embodiment of the present invention, the transparent intermediate layer includes at least two layers of transparent material layer.
According to one preferred embodiment of the present invention, the material of the transparent intermediate layer is transparent resin.
According to one preferred embodiment of the present invention, the transparent resin includes poly- (1,2- butadiene), poly- (2- vinyl tetrahydro Furans), poly- (2- vinyl thiophene), polycarbonate, polyester resin, polyethylene, polystyrene, polystyrene-benzene alkene nitrile, poly- Asia Pacify at least one of ester, polyvinyl chloride.
The embodiment of the invention provides a kind of display devices comprising display panel provided in an embodiment of the present invention.
The invention has the benefit that the present invention is by providing a kind of new display panel and display device, inside COA upper substrate include: transparent substrate;Black-matrix layer is arranged on the transparent substrate;Transparent intermediate layer is arranged in institute It states on the exposed region of transparent substrate;Transparent electrode layer is arranged in the black-matrix layer and the transparent intermediate layer;Institute State the optical index of transparent intermediate layer between the transparent substrate optical index and the transparent electrode layer optical index it Between;ITO is avoided in this way and is directly contacted with glass substrate, be can be very good to reduce the reflectivity that light goes out in ITO, be alleviated The existing display panel technical problem reflective there are the contact position of ITO and glass substrate.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only some of invention Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these Figure obtains other attached drawings.
Fig. 1 is the structural schematic diagram of existing COA display panel
Fig. 2 is the first structural schematic diagram of COA display panel provided by the invention;
Fig. 3 is second of structural schematic diagram of COA display panel provided by the invention;
Fig. 4 is the third structural schematic diagram of COA display panel provided by the invention.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate the present invention Example.The direction term that the present invention is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side] Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the present invention, rather than to The limitation present invention.The similar unit of structure is with being given the same reference numerals in the figure.
The present invention can be reflective for the contact position of ITO existing for existing display panel and glass substrate technical problem; The embodiment of the present invention is able to solve the defect.
As shown in Fig. 2, display panel provided by the invention include: setting TFT lower substrate 21 and with base under the TFT The COA upper substrate 22 that plate 21 is correspondingly arranged;The COA upper substrate 22 includes:
Transparent substrate 221;
Black-matrix layer 222 is arranged on the transparent substrate 221;
Transparent intermediate layer 223 is arranged on the exposed region of the transparent substrate 221;
Transparent electrode layer 224 is arranged 223 in the black-matrix layer 222 and the transparent intermediate layer;
Wherein, the optical index of the transparent intermediate layer 223 is between the optical index of the transparent substrate 221 and described Between the optical index of prescribed electrode layer 224.
Optionally, transparent substrate, i.e. the refractive index n=1.50 of glass substrate, transparent electrode layer, i.e. tin indium oxide ITO's Refractive index n=1.80, in order to reduce cost, the material of transparent intermediate layer is transparent resin, and the refractive index of transparent resin is between glass Between glass and ITO.
Optionally, the transparent resin includes poly- (1,2- butadiene) (its refractive index n=1.51), poly- (2- vinyl four Hydrogen furans) (its refractive index n=1.55), poly- (2- vinyl thiophene) (its refractive index 1.6376 of n=), polycarbonate (its folding of n= Penetrate rate 1.60), polyester resin (its refractive index n=1.523~1.54), polyethylene (its refractive index n=1.50~1.54), polyphenyl Ethylene (its refractive index n=1.6), polystyrene-benzene alkene nitrile (its refractive index n=1.56~1.57), polyurethane (its refractive index N=1.50~1.60), one of polyvinyl chloride (its refractive index n=1.54) or a variety of mixtures.
The present embodiment provides a kind of new display panels, and internal COA upper substrate includes: transparent substrate;Black matrix" Layer is arranged on the transparent substrate;Transparent intermediate layer is arranged on the exposed region of the transparent substrate;Transparent electrode layer, It is arranged in the black-matrix layer and the transparent intermediate layer;The optical index of the transparent intermediate layer is between described transparent Between the optical index of substrate and the optical index of the transparent electrode layer;ITO is avoided so directly to be connect with glass substrate Touching can be very good to reduce the reflectivity that light goes out in ITO, alleviate existing display panel connecing there are ITO and glass substrate Touch the reflective technical problem in position.
In existing display device shown in Fig. 1, transparent electrode layer 224 is uneven, in order to enhance the flat of COA upper substrate Property, promote contrast;As shown in Fig. 2, the thickness of the transparent intermediate layer 223 is equal to or slightly less than the black-matrix layer 222 thickness can keep flatness in this way, promote contrast.Under normal circumstances, the film thickness of black-matrix layer 222 be lum extremely 3um, transparent intermediate layer 223 can be lum to 3um.
In display device work, light path system will generate various veiling glares, such as yellow orange light or dark green light, in order to inhale The yellow orange light or dark green light in light path system are received, and then promotes colour gamut, as shown in figure 3, being added with light in the transparent intermediate layer Nanoparticle 225.
Optionally, the smooth nanoparticle includes for absorbing the first of yellow orange light the smooth nanoparticle and for absorbing At least one of smooth nanoparticle of the second of dark green light.
Optionally, the smooth nanoparticle includes rhodamine derivative.
Optionally, the smooth nanoparticle includes metal nanoparticle-rhodamine derivative dye mixed system.
Optionally, in order to further decrease reflection, the transparent intermediate layer includes at least two layers of transparent material layer, transparent On substrate to the direction of transparent electrode layer, the optical index of each transparent material layer is incremented by.
As shown in figure 4, transparent intermediate layer 223 includes two layers of transparent material layer, i.e. the first transparent material layer 2231 and second Transparent material layer 2232, at this point, the first transparent material layer 2231 include polyethylene (its refractive index n=1.50~1.54), it is poly- (1, 2- butadiene) (its refractive index n=1.51), polyurethane (its refractive index n=1.50~1.60), polyester resin (its refractive index n =1.523~1.54), polyvinyl chloride (its refractive index n=1.54), poly- (2- vinyl tetrahydrofuran) (its refractive index n= 1.55) and one of polystyrene-benzene alkene nitrile (its refractive index n=1.56~1.57) or a variety of mixtures, second thoroughly Bright material layer 2232 includes polycarbonate (its refractive index 1.60 of n=), polystyrene (its refractive index n=1.6), poly- (2- ethylene Base thiophene) one of (its refractive index 1.6376 of n=) or a variety of mixtures.
Corresponding, present invention provides a kind of display devices comprising display panel provided in an embodiment of the present invention.
The embodiment of the present invention provides a kind of production method for COA upper substrate, including several steps below simultaneously:
Firstly, coating light screening material on the transparent substrate, and black-matrix layer 222 is formed through processing.
Specifically, as shown in figure 3, light screening material is coated on the transparent substrate 221 that glass substrate is formed, then through exposing Light, development and lift-off processing form the corresponding pattern of black-matrix layer 222.
Then, it deposits on the exposed region of black-matrix layer 222 and transparent substrate 221 doped with the saturating of light nanoparticle Ming tree rouge, and transparent intermediate layer 223 is formed through processing.
Specifically, as shown in figure 3, deposition is doped with light on the exposed region of black-matrix layer 222 and transparent substrate 221 Then the transparent resin of nanoparticle forms the corresponding pattern of transparent intermediate layer 223 with lift-off processing through exposure and development.
Then, transparent conductive material is applied in black-matrix layer 222 and transparent intermediate layer 223, and is formed through processing Prescribed electrode layer 224.
Specifically, as shown in figure 3, applying one layer of transparent conduction in black-matrix layer 222 and transparent intermediate layer 223 Material, and the corresponding pattern of transparent electrode layer 224 is formed with lift-off processing through exposure and development.
The embodiment of the invention also provides a kind of production methods for COA upper substrate, including several steps below:
Firstly, depositing the transparent resin doped with light nanoparticle on the transparent substrate, and transparent centre is formed through processing Layer 223.
Specifically, as shown in figure 3, deposition is doped with light nanoparticle on the transparent substrate 221 that glass substrate is formed Then transparent resin forms the corresponding pattern of transparent intermediate layer 223 with baking processing through exposure and development.
Then, light screening material is coated on the exposed region of transparent substrate 221, and forms black-matrix layer 222 through processing.
Specifically, as shown in figure 3, light screening material is coated on the transparent substrate 221 that glass substrate is formed, then through exposing Light, development and baking processing form the corresponding pattern of black-matrix layer 222.
Then, transparent conductive material is applied in black-matrix layer 222 and transparent intermediate layer 223, and is formed through processing Prescribed electrode layer 224.
Specifically, as shown in figure 3, applying one layer of transparent conduction in black-matrix layer 222 and transparent intermediate layer 223 Material, and the corresponding pattern of transparent electrode layer 224 is formed with baking processing through exposure and development.
Corresponding, the present invention also provides one kind to be based on COA upper substrate obtained by the above method, the knot of the COA upper substrate Structure is identical as the COA upper substrate of the display panel in above-described embodiment, repeats no more.
According to above-described embodiment:
For the present invention by providing a kind of new display panel and display device, internal COA upper substrate includes: transparent Substrate;Black-matrix layer is arranged on the transparent substrate;The exposed region of the transparent substrate is arranged in transparent intermediate layer On;Transparent electrode layer is arranged in the black-matrix layer and the transparent intermediate layer;The anaclasis of the transparent intermediate layer Rate is between the optical index of the transparent substrate and the optical index of the transparent electrode layer;Avoid in this way ITO with Glass substrate directly contacts, and can be very good to reduce the reflectivity that light goes out in ITO, alleviating existing display panel, there are ITO The reflective technical problem with the contact position of glass substrate.
In conclusion although the present invention has been disclosed above in the preferred embodiment, but above preferred embodiment is not to limit The system present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention Decorations, therefore protection scope of the present invention subjects to the scope of the claims.

Claims (10)

1. a kind of display panel characterized by comprising TFT lower substrate and the COA being correspondingly arranged with the TFT lower substrate Upper substrate;The COA upper substrate includes:
Transparent substrate;
Black-matrix layer is arranged on the transparent substrate;
Transparent intermediate layer is arranged on the exposed region of the transparent substrate;
Transparent electrode layer is arranged in the black-matrix layer and the transparent intermediate layer;
Wherein, optical index and the transparent electrode layer of the optical index of the transparent intermediate layer between the transparent substrate Between optical index.
2. display panel according to claim 1, which is characterized in that the thickness of the transparent intermediate layer is equal to the black The thickness of matrix layer.
3. display panel according to claim 1, which is characterized in that be added with light nanoparticle in the transparent intermediate layer Son.
4. display panel according to claim 3, which is characterized in that the smooth nanoparticle includes for absorbing yellow orange light The first smooth nanoparticle and at least one of the second smooth nanoparticle for absorbing dark green light.
5. display panel according to claim 3, which is characterized in that the smooth nanoparticle includes that rhodamine is derivative Object.
6. display panel according to claim 3, which is characterized in that the smooth nanoparticle includes metal nanoparticle- The mixed system of rhodamine derivative dye.
7. display panel according to claim 1, which is characterized in that the transparent intermediate layer includes at least two layers of transparent material The bed of material.
8. display panel according to any one of claims 1 to 7, which is characterized in that the material of the transparent intermediate layer is Transparent resin.
9. display panel according to claim 8, which is characterized in that the transparent resin include poly- (1,2- butadiene), Poly- (2- vinyl tetrahydrofuran), poly- (2- vinyl thiophene), polycarbonate, polyester resin, polyethylene, polystyrene, polyphenyl At least one of ethylene-benzene alkene nitrile, polyurethane, polyvinyl chloride.
10. a kind of display device, which is characterized in that including the described in any item display panels of claim 1 to 9.
CN201811133635.3A 2018-09-27 2018-09-27 Display panel and display device Active CN109164628B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201811133635.3A CN109164628B (en) 2018-09-27 2018-09-27 Display panel and display device
PCT/CN2018/113283 WO2020062418A1 (en) 2018-09-27 2018-11-01 Coa upper substrate, display panel and display apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811133635.3A CN109164628B (en) 2018-09-27 2018-09-27 Display panel and display device

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CN109164628A true CN109164628A (en) 2019-01-08
CN109164628B CN109164628B (en) 2020-04-28

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WO (1) WO2020062418A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109683370A (en) * 2019-01-28 2019-04-26 深圳市华星光电技术有限公司 A kind of liquid crystal display

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103631062A (en) * 2012-08-23 2014-03-12 株式会社日本显示器 Liquid crystal display device
CN104597657A (en) * 2015-02-28 2015-05-06 合肥京东方光电科技有限公司 Colored film substrate and manufacturing method thereof, as well as display device and manufacturing method thereof
CN104656325A (en) * 2015-03-18 2015-05-27 深圳市华星光电技术有限公司 COA (Color filter On Array) type liquid crystal panel and manufacturing method thereof
CN107728373A (en) * 2017-11-22 2018-02-23 深圳市华星光电技术有限公司 A kind of color membrane substrates and its manufacture method, liquid crystal panel
CN107797332A (en) * 2017-11-22 2018-03-13 深圳市华星光电技术有限公司 A kind of liquid crystal display panel and liquid crystal display device
CN108318950A (en) * 2018-03-01 2018-07-24 深圳市华星光电技术有限公司 Backlight module and its diffusion sheet
CN108508648A (en) * 2018-04-04 2018-09-07 深圳市华星光电技术有限公司 Liquid crystal display panel and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103631062A (en) * 2012-08-23 2014-03-12 株式会社日本显示器 Liquid crystal display device
CN104597657A (en) * 2015-02-28 2015-05-06 合肥京东方光电科技有限公司 Colored film substrate and manufacturing method thereof, as well as display device and manufacturing method thereof
CN104656325A (en) * 2015-03-18 2015-05-27 深圳市华星光电技术有限公司 COA (Color filter On Array) type liquid crystal panel and manufacturing method thereof
CN107728373A (en) * 2017-11-22 2018-02-23 深圳市华星光电技术有限公司 A kind of color membrane substrates and its manufacture method, liquid crystal panel
CN107797332A (en) * 2017-11-22 2018-03-13 深圳市华星光电技术有限公司 A kind of liquid crystal display panel and liquid crystal display device
CN108318950A (en) * 2018-03-01 2018-07-24 深圳市华星光电技术有限公司 Backlight module and its diffusion sheet
CN108508648A (en) * 2018-04-04 2018-09-07 深圳市华星光电技术有限公司 Liquid crystal display panel and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109683370A (en) * 2019-01-28 2019-04-26 深圳市华星光电技术有限公司 A kind of liquid crystal display

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WO2020062418A1 (en) 2020-04-02

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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province

Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd.

Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province

Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd.

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