WO2020220530A1 - Substrat de filtre coloré, écran d'affichage à cristaux liquides et dispositif d'affichage à cristaux liquides - Google Patents

Substrat de filtre coloré, écran d'affichage à cristaux liquides et dispositif d'affichage à cristaux liquides Download PDF

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Publication number
WO2020220530A1
WO2020220530A1 PCT/CN2019/102433 CN2019102433W WO2020220530A1 WO 2020220530 A1 WO2020220530 A1 WO 2020220530A1 CN 2019102433 W CN2019102433 W CN 2019102433W WO 2020220530 A1 WO2020220530 A1 WO 2020220530A1
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WO
WIPO (PCT)
Prior art keywords
substrate
green
red
color filter
liquid crystal
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PCT/CN2019/102433
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English (en)
Chinese (zh)
Inventor
田新斌
徐向阳
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深圳市华星光电技术有限公司
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Publication of WO2020220530A1 publication Critical patent/WO2020220530A1/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
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell

Definitions

  • the present invention relates to the field of display technology, in particular to a color film substrate, a liquid crystal display panel and a liquid crystal display device.
  • LCD Liquid Crystal Display
  • liquid crystal display devices which include liquid crystal display panels and backlight modules (backlight module).
  • backlit liquid crystal displays which include liquid crystal display panels and backlight modules (backlight module).
  • the working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass substrates. There are many vertical and horizontal small wires between the two glass substrates. The liquid crystal molecules are controlled to change direction by powering on or not, and the light of the backlight module Refraction produces a picture.
  • the liquid crystal display panel consists of a color filter (CF, Color Filter) substrate, a thin film transistor array (Thin Film Transistor Array, TFT Array) substrate, and liquid crystal (LC) and sealant sandwiched between the color filter substrate and the thin film transistor substrate.
  • Sealant its molding process generally includes: front-end array process (film, yellow light, etching and peeling), middle-end cell process (TFT array substrate and CF substrate bonding) and back-end module assembly Manufacturing process (drive chip and printed circuit board pressing).
  • the front Array process is mainly to form a TFT array substrate to control the movement of liquid crystal molecules
  • the middle Cell process is mainly to add liquid crystal between the TFT array substrate and the CF substrate
  • the latter module assembly process is mainly to drive the chip pressing and bonding.
  • the integration of the printed circuit board drives the rotation of the liquid crystal molecules to display images.
  • the color filter layer in the color film substrate of the existing liquid crystal display device is made of color resist materials, and the color resist materials can only transmit light of the same color, resulting in low backlight utilization efficiency and high product power consumption.
  • Quantum dot dots, QDs) luminescent material is a new technology applied in the field of liquid crystal display technology. After the semiconductor material gradually decreases from the bulk phase to a certain critical size (1-20nm), its carrier waveability becomes significant, and the movement of the carrier will be limited, resulting in an increase in the kinetic energy of the semiconductor material, and the corresponding electronic structure From the continuous energy level structure of the bulk phase to the discontinuous state of quasi-splitting, this phenomenon is called the quantum size effect, and such semiconductor nanoparticles are quantum dots.
  • quantum dot materials are II-VI, III-V, and IV-VI group elements.
  • the quantum dots of these materials all obey the quantum size effect.
  • the energy level changes with the size of the quantum dot, and the properties also follow the quantum dot
  • the size changes such as the wavelength of absorption and emission changes with the size.
  • the emission wavelength can be controlled by changing its size. Therefore, semiconductor quantum dots can have a wide range of applications in the fields of lighting, displays, lasers, and bioluminescent labels.
  • the purpose of the present invention is to provide a color film substrate, which can improve backlight utilization efficiency and reduce product power consumption when applied to a liquid crystal display device.
  • Another object of the present invention is to provide a liquid crystal display panel, which can improve the utilization rate of the backlight and reduce the power consumption of the product.
  • Another object of the present invention is to provide a liquid crystal display device with high backlight utilization efficiency and low power consumption.
  • the present invention first provides a color filter substrate, including a substrate, a black matrix provided on the substrate, a color filter layer provided on the substrate, and a color filter layer provided on the black matrix and the color filter layer.
  • a planarization layer and a common electrode layer provided on the planarization layer;
  • the black matrix encloses a plurality of red pixel regions, a plurality of green pixel regions, and a plurality of blue pixel regions alternately arranged on a substrate;
  • the color filter layer includes a plurality of pixels corresponding to the plurality of red pixel regions.
  • the material of the planarization layer is a transparent organic material.
  • the material of the substrate is glass.
  • the material of the common electrode layer is ITO.
  • the red filter unit and the green filter unit are both manufactured by inkjet printing.
  • the present invention also provides a liquid crystal display panel, comprising a color filter substrate, a TFT array substrate and a liquid crystal layer arranged between the color filter substrate and the TFT array substrate that are arranged oppositely; the color filter substrate is the above-mentioned color filter substrate; The side of the color filter substrate with the common electrode layer is opposite to the TFT array substrate.
  • the liquid crystal display panel further includes an ultraviolet light absorption film arranged on the side of the color filter substrate away from the TFT array substrate.
  • the liquid crystal display panel further includes an upper polarizer arranged between the color filter substrate and the ultraviolet light absorption film and a lower polarizer arranged on the side of the TFT array substrate away from the color filter substrate.
  • the ultraviolet light absorption film is attached or coated on the side of the upper polarizer away from the color filter substrate.
  • the present invention also provides a liquid crystal display device, which is characterized by comprising the above-mentioned liquid crystal display panel and a blue backlight provided on the side of the liquid crystal display panel where the TFT array substrate is arranged.
  • the color filter substrate of the present invention includes a substrate, a black matrix provided on the substrate, a color filter layer provided on the substrate, a planarization layer provided on the black matrix and the color filter layer And a common electrode layer arranged on the planarization layer, the black matrix encloses a plurality of red pixel regions, a plurality of green pixel regions and a plurality of blue pixel regions alternately arranged on the substrate, and the color filter layer includes Multiple red filter units corresponding to the multiple red pixel regions and multiple green filter units respectively corresponding to the multiple green pixel regions.
  • the red filter unit includes a red color resist and red light quantum dots doped in the red color resist
  • the green filter unit includes a green color resist and green light quantum dots doped in the green color resist.
  • Figure 1 is a schematic diagram of the structure of the color filter substrate of the present invention.
  • FIG. 2 is a schematic diagram of the structure of the liquid crystal display panel of the present invention.
  • FIG. 3 is a schematic diagram of the structure of the liquid crystal display device of the present invention.
  • the present invention provides a color filter substrate, including a substrate 100, a black matrix 200 provided on the substrate 100, a color filter layer 300 provided on the substrate 100, a black matrix 200 and a color
  • the black matrix 200 encloses a plurality of red pixel regions 111, a plurality of green pixel regions 112, and a plurality of blue pixel regions 113 alternately arranged in sequence on the substrate 100.
  • the color filter layer 300 includes a plurality of red filter units 310 respectively corresponding to a plurality of red pixel regions 111 and a plurality of green filter units 320 respectively corresponding to a plurality of green pixel regions 112, and corresponding to a plurality of blue
  • the pixel area 113 is not provided with a filter unit.
  • the red filter unit 310 includes a red color resist 311 and a red light quantum dot 312 doped in the red color resist 311, and the red light quantum dot 312 can absorb light to emit red light.
  • the green filter unit 320 includes a green color resist 321 and a green light quantum dot 322 doped in the green color resist 321, and the light filter quantum dot 322 can absorb light to emit green light.
  • the red filter unit 310 and the green filter unit 320 are both manufactured by inkjet printing.
  • the red light quantum dots 312 and the green light quantum dots 322 have a particle size of 2 nm-10 nm.
  • the material of the planarization layer 400 is a transparent organic material.
  • the material of the planarization layer 400 is fusible polytetrafluoroethylene (PFA).
  • PFA fusible polytetrafluoroethylene
  • planarization layer 400 is fabricated on the color filter layer 300 and the black matrix 200 by coating.
  • the material of the common electrode layer 500 is ITO.
  • the common electrode layer 500 is fabricated on the planarization layer 400 by sputtering.
  • the color filter layer 300 of the color filter substrate of the present invention is provided with a red filter unit 310 corresponding to the red pixel area 111 and a green filter unit 320 corresponding to the green pixel area 112, corresponding to the blue pixel area 113 No filter unit is provided.
  • the red filter unit 310 includes a red color resist 311 and red light quantum dots 312 doped in the red color resist 311, and the green filter unit 320 includes a green color resist 321 and doped in the green color resist 321
  • the green light quantum dots 322 of the present invention are used to group the color film substrate and the TFT array substrate of the present invention, and a liquid crystal layer is arranged between the two to form a liquid crystal display panel, and then blue light is arranged on the side of the liquid crystal display panel with the TFT array substrate.
  • the blue light emitted by the blue backlight source penetrates the TFT array substrate and the liquid crystal layer, and then emits blue light through the blue pixel area 113, and at the same time enters the red filter unit 310 to excite the red light quantum dots 312 to emit red light Into the green filter unit 320 to excite the green light quantum dots 322 to emit green light to achieve color display.
  • the red filter unit 310 to excite the red light quantum dots 312 to emit red light
  • the green filter unit 320 to excite the green light quantum dots 322 to emit green light to achieve color display.
  • the invention first arranges a planarization layer 400 on the color filter layer 300 and the black matrix 200, and then forms on the planarization layer 400
  • the common electrode layer 500 can use the flattening layer 400 to flatten the surface of the color filter layer 300 and the black matrix 200 to ensure that the color film substrate and the TFT array substrate of the present invention have a uniform cell thickness.
  • it can prevent the process of sputtering the common electrode layer 500 from damaging the red light quantum dots 312 and the green light quantum dots 322 in the color filter layer 300 with smaller particle diameters, ensuring the reliability of the color filter layer 300, and further improving The quality of the product.
  • the present invention also provides a liquid crystal display panel, including a color filter substrate 10 and a TFT array substrate 20 arranged oppositely, and a liquid crystal layer disposed between the color filter substrate 10 and the TFT array substrate 20 30.
  • the color filter substrate 10 is the above-mentioned color filter substrate, and the structure of the color filter substrate 10 will not be described repeatedly here.
  • the side of the color filter substrate 10 with the common electrode layer 500 is opposite to the TFT array substrate 20.
  • the red filter unit 310 and the green filter unit 320 in the color filter layer 300 cannot be matched.
  • the light emitted by the blue backlight source is completely and effectively absorbed, and blue pixel area 113 also has blue light leakage.
  • the liquid crystal display panel of the present invention also includes the color film substrate 10 away from the TFT array
  • the ultraviolet light absorption film 40 on the side of the substrate 20 can absorb ultraviolet light and eliminate the damage caused by the ultraviolet light to human eyes.
  • the liquid crystal display panel further includes an upper polarizer 50 arranged between the color filter substrate 10 and the ultraviolet light absorption film 40 and a lower polarizer 60 arranged on the side of the TFT array substrate 20 away from the color filter substrate 10.
  • the ultraviolet light absorbing film 40 is attached or coated on the side of the upper polarizer 50 away from the color filter substrate 10.
  • the color filter layer 300 of the color filter substrate 10 is provided with a red filter unit 310 corresponding to the red pixel area 111 and a green filter unit 320 corresponding to the green pixel area 112. Corresponding to the blue pixel region 113, no filter unit is provided.
  • the red filter unit 310 includes a red color resist 311 and red light quantum dots 312 doped in the red color resist 311, and the green filter unit 320 includes a green color resist 321 and doped
  • the green light quantum dots 322 in the green color resister 321 enable the blue backlight source to be provided on the side of the liquid crystal display panel provided with the TFT array substrate 20 of the present invention to form a liquid crystal display device, and the blue light emitted by the blue backlight source penetrates the TFT array substrate After 20 and the liquid crystal layer 30, blue light is emitted through the blue pixel area 113, and at the same time, it is injected into the red filter unit 310 to excite the red light quantum dots 312 to emit red light, and into the green filter unit 320 to excite the green light quantum dots 322 to emit green light.
  • a planarization layer 400 is first provided on the color filter layer 300 and the black matrix 200, and then a common electrode layer 500 is formed on the planarization layer 400.
  • the planarization layer 400 can be used for the color filter layer 300
  • the surface of the black matrix 200 and the black matrix 200 are flattened to ensure that the cell thickness of the liquid crystal display panel of the present invention is uniform.
  • the common electrode layer 500 can prevent the process of sputtering the common electrode layer 500 from affecting the red light quantum dots 312 with smaller particle diameters in the color filter layer 300. And the green light quantum dots 322 are damaged, which ensures the reliability of the color filter layer 300 and further improves the quality of the product.
  • the present invention also provides a liquid crystal display device, including the above-mentioned liquid crystal display panel and a blue backlight 9 arranged on the side of the liquid crystal display panel where the TFT array substrate 20 is arranged.
  • a liquid crystal display device including the above-mentioned liquid crystal display panel and a blue backlight 9 arranged on the side of the liquid crystal display panel where the TFT array substrate 20 is arranged.
  • the structure of the liquid crystal display panel will not be described repeatedly here.
  • the blue backlight source 9 may be a blue LED backlight source, and of course, other commonly used blue backlight sources in the prior art may also be used.
  • the color filter layer 300 of the color filter substrate 10 is provided with a red filter unit 310 corresponding to the red pixel area 111 and a green filter unit 320 corresponding to the green pixel area 112. Corresponding to the blue pixel region 113, no filter unit is provided.
  • the red filter unit 310 includes a red color resist 311 and red light quantum dots 312 doped in the red color resist 311, and the green filter unit 320 includes a green color resist 321 and doped
  • the green light quantum dots 322 in the green color resistor 321 enable the liquid crystal display device of the present invention to display blue light emitted by the blue backlight 9 after penetrating the TFT array substrate 20 and the liquid crystal layer 30, and then exiting through the blue pixel area 113 Blue light enters the red filter unit 310 to excite the red light quantum dots 312 to emit red light, and enters the green filter unit 320 to excite the green light quantum dots 322 to emit green light to achieve color display.
  • the present invention can effectively improve the utilization efficiency of the backlight, thereby reducing the power consumption of the product and improving the product quality.
  • the present invention starts with the color filter layer 300 and A flattening layer 400 is provided on the black matrix 200, and then a common electrode layer 500 is formed on the flattening layer 400.
  • the flattening layer 400 can be used to flatten the surface of the color filter layer 300 and the black matrix 200 to ensure the liquid crystal display panel.
  • the cell thickness is uniform, and at the same time, it can prevent the process of sputtering the common electrode layer 500 from damaging the red light quantum dots 312 and the green light quantum dots 322 in the color filter layer 300 with smaller particle sizes, ensuring the reliability of the color filter layer 300, Further enhance the quality of the product.
  • the color filter substrate of the present invention includes a substrate, a black matrix provided on the substrate, a color filter layer provided on the substrate, a planarization layer provided on the black matrix and the color filter layer, and
  • the common electrode layer arranged on the planarization layer, the black matrix encloses a plurality of red pixel regions, a plurality of green pixel regions, and a plurality of blue pixel regions alternately arranged on the substrate.
  • the color filter layer includes separate and multiple A plurality of red filter units corresponding to each red pixel area and a plurality of green filter units respectively corresponding to the plurality of green pixel areas, the red filter unit includes a red color resist and red light quantum dots doped in the red color resist, The green filter unit includes a green color resist and green light quantum dots doped in the green color resist.
  • the application of the color film substrate of the present invention in a liquid crystal display device can improve the utilization efficiency of the liquid crystal display device on the backlight and reduce the power of the liquid crystal display device. Consumption.
  • the liquid crystal display panel of the present invention can improve the utilization rate of the backlight and reduce the power consumption of the product.
  • the backlight utilization efficiency of the liquid crystal display device of the present invention is high and the power consumption is low.

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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)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

La présente invention concerne un substrat de filtre coloré (10), un écran d'affichage à cristaux liquides et un dispositif d'affichage à cristaux liquides Le substrat de filtre coloré (10) comprend un substrat (100), une matrice noire (200) disposée sur le substrat (100), une couche de filtre coloré (300) disposée sur le substrat (100), une couche de planarisation (400) disposée sur la matrice noire (200) et la couche de filtre coloré (300), et une couche d'électrode commune (500) disposée sur la couche de planarisation (400). La matrice noire (200) renferme une pluralité de régions de pixels rouges (111), une pluralité de régions de pixels verts (112), et une pluralité de régions de pixels bleus (113) disposées en alternance de manière alternée sur le substrat (100). La couche de filtre de couleur (300) comprend une pluralité d'unités de filtre rouge (310) correspondant respectivement à la pluralité de régions de pixel rouge (111), et une pluralité d'unités de filtre vert (320) correspondant respectivement à la pluralité de régions de pixel vert (112). L'unité de filtre rouge (310) comprend une réserve de couleur rouge (311) et un point quantique de lumière rouge (312) dopé à l'intérieur de celle-ci. L'unité de filtre vert (320) comprend une réserve de couleur verte (321) et un point quantique de lumière verte (322) dopé à l'intérieur de celle-ci. L'application du substrat de filtre coloré (10) dans le dispositif d'affichage à cristaux liquides peut améliorer l'efficacité d'utilisation du dispositif d'affichage à cristaux liquides pour le rétroéclairage, et réduire la consommation d'énergie du dispositif d'affichage à cristaux liquides.
PCT/CN2019/102433 2019-04-30 2019-08-26 Substrat de filtre coloré, écran d'affichage à cristaux liquides et dispositif d'affichage à cristaux liquides WO2020220530A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910364396.0 2019-04-30
CN201910364396.0A CN110007508A (zh) 2019-04-30 2019-04-30 彩膜基板、液晶显示面板及液晶显示装置

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WO2020220530A1 true WO2020220530A1 (fr) 2020-11-05

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CN110007508A (zh) * 2019-04-30 2019-07-12 深圳市华星光电技术有限公司 彩膜基板、液晶显示面板及液晶显示装置
CN110673386A (zh) * 2019-10-15 2020-01-10 深圳市华星光电技术有限公司 一种阵列基板及液晶显示面板
CN110993663A (zh) * 2019-12-04 2020-04-10 深圳市华星光电半导体显示技术有限公司 阵列基板及显示面板
CN114545674B (zh) * 2020-11-25 2023-11-10 京东方科技集团股份有限公司 反射式显示面板、显示装置和彩膜基板及其制备方法
CN112652649B (zh) * 2020-12-21 2023-06-16 深圳扑浪量子半导体有限公司 一种量子点显示装置及其制备方法与应用
CN112684632A (zh) * 2020-12-25 2021-04-20 舟山扑浪实业有限公司 一种像素级量子点显示面板及其制备方法
CN113867041A (zh) * 2021-09-30 2021-12-31 闽都创新实验室 液晶与量子点结合的彩色滤光片显示装置
CN114171572B (zh) * 2021-12-08 2023-05-02 武汉华星光电半导体显示技术有限公司 显示模组

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CN110007508A (zh) * 2019-04-30 2019-07-12 深圳市华星光电技术有限公司 彩膜基板、液晶显示面板及液晶显示装置

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