WO2015078157A1 - Substrat de film coloré, son procédé de fabrication et dispositif d'affichage - Google Patents

Substrat de film coloré, son procédé de fabrication et dispositif d'affichage Download PDF

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Publication number
WO2015078157A1
WO2015078157A1 PCT/CN2014/078705 CN2014078705W WO2015078157A1 WO 2015078157 A1 WO2015078157 A1 WO 2015078157A1 CN 2014078705 W CN2014078705 W CN 2014078705W WO 2015078157 A1 WO2015078157 A1 WO 2015078157A1
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WO
WIPO (PCT)
Prior art keywords
color filter
light
layer
quantum dot
substrate
Prior art date
Application number
PCT/CN2014/078705
Other languages
English (en)
Chinese (zh)
Inventor
舒适
谷敬霞
徐传祥
姚琪
齐永莲
Original Assignee
京东方科技集团股份有限公司
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.)
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Publication of WO2015078157A1 publication Critical patent/WO2015078157A1/fr

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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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/36—Micro- or nanomaterials

Definitions

  • Color film substrate manufacturing method thereof, and display device
  • Embodiments of the present disclosure relate to a color filter substrate, a method of fabricating the same, and a display device. Background technique
  • TFT-LCD Thin Film Transistor-Liquid Crystal Display
  • the TFT-LCD converts the white light emitted by the light source into red, green, blue, etc. by the filtering effect of the color filter layer such as the red color filter layer, the green color filter layer, and the blue color filter layer.
  • Light, color filter layers of different colors respectively transmit light of a corresponding color band, thereby realizing color display of the TFT-LCD.
  • the inventors have found in the process of designing the present disclosure that if it is necessary to enlarge the color gamut of the LCD, the color purity of the color filter layer is increased, but this reduces the light transmittance of the color filter layer. In order to ensure the display brightness of the TFT-LCD, it is also necessary to increase the light output intensity of the light source, resulting in an increase in the power consumption of the TFT-LCD. Summary of the invention
  • At least one embodiment of the present disclosure provides a color filter substrate capable of improving a color gamut range and a light transmittance of a display device without increasing power consumption of the display device.
  • a color film substrate comprising a substrate substrate and a color filter layer on the substrate, further comprising:
  • the quantum dot layer located above the color filter layer, the quantum dot layer comprising at least three quantum dots, and any one of the quantum dot layers is illuminated to emit light of a corresponding wavelength band.
  • the color filter substrate further includes a black matrix between the color filter layer and the substrate.
  • the color filter substrate further includes: the quantum dot layer Flat layer and spacer above.
  • the quantum dot layer has a thickness of 0.01 to 2 ⁇ m.
  • the quantum dot layer is located on the light incident side of the color filter substrate, white light or other color light entering the substrate substrate first enters the quantum dot layer, and the quantum dots in the excited quantum dot layer are emitted including red.
  • a display device comprising the above-described color filter substrate.
  • a method of fabricating a color filter substrate comprising:
  • a quantum dot layer comprising at least three quantum dots is formed over the color filter layer, and any one of the quantum dot dots is illuminated by light to emit light of a corresponding wavelength band.
  • the method before the color filter layer is formed on the base substrate, the method further includes: forming a black matrix on the base substrate;
  • forming a color filter layer on the base substrate comprises: forming a color filter layer on the black matrix.
  • the method further comprises: forming a flat layer and a spacer over the quantum dot layer.
  • the quantum dot layer has a thickness of 0.01 to 2 ⁇ m.
  • FIG. 1 is a schematic structural view of a color filter substrate according to an embodiment of the present disclosure
  • FIG. 2 is a flow chart of a method of fabricating a color film substrate in accordance with an embodiment of the present disclosure. detailed description
  • the color filter substrate includes a substrate substrate 1 and a color filter layer 2 on the substrate substrate 1, and further includes:
  • the quantum dot layer 3 includes at least three kinds of quantum dots, and any one of the quantum dot layers 3 is illuminated to emit a corresponding wavelength band. Light.
  • Quantum dots are extremely tiny semiconductor nanocrystals that are invisible to the naked eye. They are composed of a combination of words, cadmium, selenium and gram atoms. The diameter of the particles in the crystal is usually less than 10 nm. It has a distinctive feature: it emits light when it is stimulated by electricity or light, producing a solid color of light. The color of the emitted light is determined by the material and size and shape of the quantum dots. The smaller the size of the quantum dot, the more the light excited by the light is biased toward blue light, the larger the size of the quantum dot, and the more the light is excited toward the red light after illumination. According to the actual situation, the size of the quantum dots can be adjusted to obtain different colors of light.
  • the quantum dot layer 3 includes red quantum dots that emit red light, green quantum dots that emit green light, and blue quantum dots that emit blue light.
  • the red quantum dot has a size of 8-1 Onm, and the red light emits a wavelength of 610 nm to 620 nm;
  • the green quantum dot has a size of 5 to 7 nm, and the emitted green light has a wavelength of 540 nm to 550 nm;
  • the color quantum dots have a size of 3 to 5 ⁇ , and emit blue light having a wavelength of 475 nm to 485 nm.
  • the wavelength of the light of each color excited by the quantum dots in this embodiment is narrow, that is, the color of the light of each color is relatively pure.
  • the quantum dot layer 3 is located on the light incident side of the color filter substrate, white light or other light entering the substrate first passes through the quantum dot layer 3. After the white light enters the quantum dot layer 3, the quantum dots are excited to emit light.
  • the red quantum dots emit pure red light
  • the green quantum dots emit pure green light
  • the blue quantum dots emit pure blue light, that is, the quantum dot layer 3 Under the excitation of white light or other light, a mixture of red, green and blue light is emitted.
  • the light emitted by the quantum dot layer 3 is mixed light, and cannot be used for display use immediately, so
  • the mixed light needs to enter the color filter layer 2 and pass through the color filter layer 2 for filtering.
  • the red color filter layer 2 absorbs the green light and the blue light in the mixed light to allow only the red light to pass; similarly, the green color filter layer 2 will be mixed in the light.
  • the red and blue light are absorbed and only the green light is allowed to pass; the blue color filter layer 2 absorbs the red and blue light in the mixed light and allows only the blue light in the mixed light to pass.
  • the saturation of the final light can be ensured without increasing the color purity of the color filter layer 2.
  • the color purity is high, so that the light transmittance of the color filter layer 2 can be ensured, thereby ensuring the display brightness of the display device.
  • the red color filter in the color filter layer 2 of the substrate in this embodiment emits pure red light
  • the green color filter in the color filter layer 2 emits pure green light
  • the color filter layer The blue color filter in 2 emits pure blue light. It is apparent that the color of the solid color light emitted from the substrate in this embodiment is high, and therefore, the display device including the substrate can provide many types of colors and a large color gamut range.
  • the quantum dot layer is located on the light incident side of the color filter substrate, white light or other light entering the substrate substrate first enters the quantum dot layer, and the quantum dot in the quantum dot layer is excited to be emitted.
  • the base substrate 1 can be made of a common transparent material such as glass or quartz, and the color filter layer 2 is usually formed by a patterning process using a pigment-doped transparent resin.
  • the thickness of the quantum dot layer 3 is preferably 0.01 to 2 ⁇ m.
  • the color filter substrate further includes: a black matrix 4 between the color filter layer 2 and the substrate substrate 1.
  • the black matrix 4 can cover structures such as gate lines, data lines, and thin film transistor cells on the array substrate, and improve contrast between the sub-pixel units.
  • the black matrix 4 can be made of a black or dark resin. Since a light-shielding material is first deposited on the formed passivation layer in the process of fabricating the black matrix 4, a plurality of black matrices 4 corresponding to the respective sub-pixel units are formed by a patterning process including etching.
  • a black photoresist is used for the production process, Using the photosensitive properties of the photoresist, the use of a photoresist can be omitted when the black matrix 4 is fabricated.
  • the monochromaticity of the light passing through the color filter layer 2 is reduced, thereby reducing the display effect of the display device, as shown in FIG.
  • the color filter layer is typically partially located above the black matrix 4.
  • the color filter substrate further includes a flat layer 5 and a spacer 6 over the quantum dot layer 3.
  • the flat layer 5 is usually formed of an insulating material such as silicon oxide, silicon nitride, hafnium oxide or resin to planarize the surface of the color filter substrate, thereby facilitating further processing of the color filter substrate.
  • an insulating material such as silicon oxide, silicon nitride, hafnium oxide or resin to planarize the surface of the color filter substrate, thereby facilitating further processing of the color filter substrate.
  • the spacer 6 is formed on the flat layer 5.
  • the spacer 6 can be classified into a spherical spacer, a rod spacer, a column spacer, and the like according to the shape.
  • the column spacer has the advantages of easy size control, high contrast, good uniformity, high durability, and less smearing effect than spherical spacers or rod spacers.
  • the spacer 6 is selected as a column spacer.
  • the spacer 6 can maintain the thickness of the cell between the color filter substrate and the array substrate behind the cartridge to ensure that the amount of liquid crystal at any place is equal between the two, thereby ensuring the display effect of the liquid crystal display device.
  • the spacers are disposed to correspond to the black matrix 4 as shown in FIG.
  • inventions of the present disclosure also provide a display device including the above color film substrate.
  • the display device can be any product or component having a display function, such as a liquid crystal panel, a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet, and the like.
  • This embodiment provides a method for fabricating a color filter substrate according to Embodiment 1 of the present invention. As shown in Figure 2, the method includes:
  • Step S101 forming a color filter layer on the base substrate
  • Step S102 forming a quantum dot layer including at least three kinds of quantum dots on the color filter layer, and any one of the quantum dot layers is illuminated to emit light of a corresponding wavelength band.
  • the quantum dot layer 3 has a thickness of 0.01 to 2 ⁇ m.
  • the method further includes forming a black matrix 4 on the base substrate 1, and then forming a color filter layer over the black matrix in step S101.
  • the manufacturing method further includes: A flat layer and a spacer are formed over the quantum dot layer.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Filters (AREA)
  • Liquid Crystal (AREA)

Abstract

La présente invention porte sur un substrat de film coloré qui comprend un substrat sous-jacent (1) et une couche de filtration de couleur (2), positionnée sur le substrat sous-jacent (1), et qui comprend également une couche de points quantiques (3) positionnée sur la couche de filtration de couleur (2). La couche de points quantiques (3) comprend au moins trois genres de points quantiques, et l'un quelconque genre de points quantiques sur la couche de points quantiques (3) est excité pour émettre une lumière ayant des bandes d'ondes correspondantes après avoir été rayonné. Le substrat de film coloré susmentionné peut accroître une gamme des couleurs et une transmittance de lumière d'un dispositif d'affichage sans accroître la consommation d'énergie du dispositif d'affichage. De plus, la présente invention porte également sur un procédé de fabrication du substrat de film coloré et sur un dispositif d'affichage comprenant le substrat de film coloré.
PCT/CN2014/078705 2013-11-27 2014-05-28 Substrat de film coloré, son procédé de fabrication et dispositif d'affichage WO2015078157A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310616389.8A CN103823317A (zh) 2013-11-27 2013-11-27 彩膜基板及其制作方法、显示装置
CN201310616389.8 2013-11-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108831317A (zh) * 2018-06-15 2018-11-16 青岛海信电器股份有限公司 显示装置及其制备方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107004699A (zh) * 2014-12-18 2017-08-01 Lg电子株式会社 有机发光二极管显示装置
JP2016212348A (ja) * 2015-05-13 2016-12-15 株式会社 オルタステクノロジー 液晶表示装置
CN106647002B (zh) * 2017-01-16 2020-06-02 京东方科技集团股份有限公司 一种彩膜基板及其制备方法、显示面板

Citations (6)

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US20060125990A1 (en) * 2004-12-14 2006-06-15 Lee Dong H LCD device and method for manufacturing the same
CN102681246A (zh) * 2012-04-12 2012-09-19 京东方科技集团股份有限公司 一种彩膜基板及其制造方法、以及液晶显示器
CN102736314A (zh) * 2012-06-29 2012-10-17 京东方科技集团股份有限公司 一种液晶面板及其制作方法以及液晶显示器
CN103207476A (zh) * 2013-04-07 2013-07-17 易美芯光（北京）科技有限公司 一种led背光液晶显示装置及其发光材料的涂覆方法
CN103472513A (zh) * 2013-08-21 2013-12-25 京东方科技集团股份有限公司 一种彩色滤光层、彩膜基板、显示装置
CN203587924U (zh) * 2013-11-27 2014-05-07 京东方科技集团股份有限公司 显示装置及其彩膜基板

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060125990A1 (en) * 2004-12-14 2006-06-15 Lee Dong H LCD device and method for manufacturing the same
CN102681246A (zh) * 2012-04-12 2012-09-19 京东方科技集团股份有限公司 一种彩膜基板及其制造方法、以及液晶显示器
CN102736314A (zh) * 2012-06-29 2012-10-17 京东方科技集团股份有限公司 一种液晶面板及其制作方法以及液晶显示器
CN103207476A (zh) * 2013-04-07 2013-07-17 易美芯光（北京）科技有限公司 一种led背光液晶显示装置及其发光材料的涂覆方法
CN103472513A (zh) * 2013-08-21 2013-12-25 京东方科技集团股份有限公司 一种彩色滤光层、彩膜基板、显示装置
CN203587924U (zh) * 2013-11-27 2014-05-07 京东方科技集团股份有限公司 显示装置及其彩膜基板

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108831317A (zh) * 2018-06-15 2018-11-16 青岛海信电器股份有限公司 显示装置及其制备方法

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