WO2020224094A1 - Écran d'affichage à cristaux liquides transflectif et appareil d'affichage à cristaux liquides transflectif - Google Patents

Écran d'affichage à cristaux liquides transflectif et appareil d'affichage à cristaux liquides transflectif Download PDF

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Publication number
WO2020224094A1
WO2020224094A1 PCT/CN2019/102152 CN2019102152W WO2020224094A1 WO 2020224094 A1 WO2020224094 A1 WO 2020224094A1 CN 2019102152 W CN2019102152 W CN 2019102152W WO 2020224094 A1 WO2020224094 A1 WO 2020224094A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
transflective liquid
pixels
display panel
Prior art date
Application number
PCT/CN2019/102152
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English (en)
Chinese (zh)
Inventor
田新斌
徐向阳
Original Assignee
深圳市华星光电技术有限公司
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Publication of WO2020224094A1 publication Critical patent/WO2020224094A1/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
    • 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
    • G02F1/133553—Reflecting elements
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
    • 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
    • G02F1/1343—Electrodes
    • 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
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making

Definitions

  • the present invention relates to the field of display technology, and in particular to a transflective liquid crystal display panel and a transflective liquid crystal display device.
  • Liquid Crystal Display has many advantages such as thin body, power saving, no radiation, etc., and has been widely used, such as: mobile phones, personal digital assistants (PDA), digital cameras, computer screens and notebook computers Screen etc.
  • PDA personal digital assistants
  • LCD Liquid Crystal Display
  • liquid crystal display panels which are composed of a color filter substrate and a thin film transistor array substrate (Thin Film Transistor Array). Substrate, TFT Array Substrate) and a liquid crystal layer (Liquid Crystal Layer) arranged between the two substrates. Its working principle is to control the rotation of the liquid crystal molecules of the liquid crystal layer by applying a driving voltage on the two glass substrates. Refraction produces a picture.
  • Liquid crystal display devices are divided into transmissive liquid crystal display devices and reflective liquid crystal display devices according to different light sources.
  • the transmissive liquid crystal display device is equipped with a backlight source to provide light to the liquid crystal display panel, and the electrode driving the rotation of the liquid crystal molecules in the liquid crystal display panel is a transparent electrode, so that the light emitted by the backlight passes through the transparent electrode and the liquid crystal layer to display an image.
  • the advantage of the liquid crystal display device is that it has excellent display ability in low-light or no-light environment, but its disadvantage is that there is insufficient backlight brightness under strong light environment (such as outdoor sunlight), which seriously affects the display effect.
  • the reflective liquid crystal display device is provided with light from the front light source or the external environment, and the liquid crystal display panel is provided with a reflective layer. After the front light source or light from the outside passes through the liquid crystal layer, after reflection, it passes through the liquid crystal layer again to display an image.
  • the advantage of this type of liquid crystal display device is its excellent display ability in a strong light environment, but its disadvantage is that the display is blurred in a low light or no light environment, which seriously affects the display quality of the liquid crystal display device.
  • the purpose of the present invention is to provide a transflective liquid crystal display panel, which can reduce power consumption while ensuring display quality, and has a higher product quality.
  • Another object of the present invention is to provide a transflective liquid crystal display device, which can reduce power consumption while ensuring display quality, and the product quality is high.
  • the present invention first provides a transflective liquid crystal display panel, which includes a TFT array substrate and a color filter substrate arranged oppositely, and a transparent material film provided on the side of the TFT array substrate close to the color filter substrate;
  • the TFT array substrate includes a plurality of pixels arranged in an array, and each pixel includes a transmission area and a reflection area adjacent to the transmission area; the thickness of the portion of the transparent material film corresponding to the reflection area of the plurality of pixels is smaller than that of the corresponding plurality of pixels.
  • the thickness of the part of the transmission area of the pixel is such that the distance between the part of the transparent material film corresponding to the reflection area of the plurality of pixels and the color filter substrate is greater than the distance between the part of the transmission area corresponding to the plurality of pixels and the color filter substrate.
  • the material of the transparent material film is an organic material.
  • the material of the transparent material film is fusible polytetrafluoroethylene.
  • the transmissive area includes a transparent first pixel electrode; the reflective area includes a reflective second pixel electrode.
  • the material of the first pixel electrode is indium tin oxide.
  • the first pixel electrode includes two backbones and a plurality of branches.
  • the two backbones cross vertically to form four alignment regions.
  • the multiple branches are located in the four alignment regions.
  • One end of each branch is connected to at least one of the two trunks.
  • One is connected, and the other end extends away from the intersection of the two trunks, and the branches in the same alignment area are parallel.
  • the material of the second pixel electrode is metal.
  • the material of the second pixel electrode is aluminum or copper.
  • the transflective liquid crystal display panel further includes a liquid crystal layer disposed between the transparent material film and the color filter substrate, and the thickness of the portion of the liquid crystal layer corresponding to the reflection area of the plurality of pixels is greater than the thickness of the transmission area corresponding to the plurality of pixels The thickness of the part.
  • the present invention also provides a transflective liquid crystal display device, comprising the transflective liquid crystal display panel described above and a TFT array substrate disposed on the transflective liquid crystal display panel away from the color filter substrate. Backlight.
  • the transflective liquid crystal display panel of the present invention includes a TFT array substrate and a color filter substrate arranged oppositely, and a transparent material film provided on the side of the TFT array substrate close to the color filter substrate.
  • the TFT array substrate includes an array A plurality of pixels are arranged, each pixel includes a transmission area and a reflection area adjacent to the transmission area, the thickness of the part of the transparent material film corresponding to the reflection area of the plurality of pixels is smaller than the thickness of the part corresponding to the transmission area of the plurality of pixels, The thickness of the portion of the liquid crystal layer corresponding to the reflective area of the multiple pixels is greater than the thickness of the portion corresponding to the transmissive area of the multiple pixels, thereby reducing the backlight brightness of the liquid crystal display device and using the reflective area to reflect ambient light for normal display. Power consumption and high product quality.
  • the transflective liquid crystal display device of the present invention can reduce power consumption while ensuring display quality, and the product quality is high.
  • FIG. 1 is a schematic cross-sectional view of a transflective liquid crystal display panel of the present invention
  • FIG. 2 is a schematic top view of pixels of the transflective liquid crystal display panel of the present invention.
  • FIG. 3 is a schematic cross-sectional view of the transflective liquid crystal display device of the present invention.
  • the present invention provides a transflective liquid crystal display panel, including a TFT array substrate 1 and a color filter substrate 2 which are arranged oppositely, and a transparent material film arranged on the side of the TFT array substrate 1 close to the color filter substrate 2 3.
  • the TFT array substrate 1 includes a plurality of pixels 10 arranged in an array, and each pixel 10 includes a transmission area 11 and a reflection area 12 adjacent to the transmission area 11.
  • the thickness of the portion of the transparent material film 3 corresponding to the reflection area 12 of the plurality of pixels 10 is smaller than the thickness of the portion corresponding to the transmission area 11 of the plurality of pixels 10, so that the transparent material film 3 corresponds to the portion of the reflection area 12 of the plurality of pixels 10
  • the distance between the transparent material film 3 and the color filter substrate 2 is greater than the distance between the transparent material film 3 and the color filter substrate 2 corresponding to the transmissive regions 11 of the pixels 10.
  • the transflective liquid crystal display panel further includes a liquid crystal layer 4 disposed between the transparent material film 3 and the color filter substrate 2, because the transparent material film 3 corresponds to the portion of the reflective area 12 of the plurality of pixels 10 and The distance between the color filter substrates 2 is greater than the distance between the portion of the transparent material film 3 corresponding to the transmission area 11 of the plurality of pixels 10 and the color filter substrate 2, and the liquid crystal layer 4 corresponds to the portion of the reflection area 12 of the plurality of pixels 10 The thickness of is greater than the thickness of the portion corresponding to the transmissive region 111 of the plurality of pixels 10.
  • the material of the transparent material film 3 is an organic material.
  • the material of the transparent material film 3 is fusible polytetrafluoroethylene (PFA).
  • the transmission area 11 includes a transparent first pixel electrode 111.
  • the reflective area 12 includes a second pixel electrode 121 that reflects light.
  • the material of the first pixel electrode 111 is transparent metal oxide, preferably indium tin oxide (ITO).
  • ITO indium tin oxide
  • the first pixel electrode 111 has a "meter"-shaped structure, and includes two trunks 1111 and a plurality of branches 1112.
  • the two trunks 1111 cross vertically to form four alignments.
  • Area, multiple branches 1112 are located in four alignment areas, one end of each branch 1112 is connected to at least one of the two trunks 1111, and the other end extends away from the intersection of the two trunks 1111, in the same alignment area
  • the branches 1112 are parallel.
  • the first pixel electrode 111 may also have other structures, such as an entire surface structure.
  • the material of the second pixel electrode 121 may be metal.
  • the material of the second pixel electrode 121 is aluminum, copper and other common reflective metal electrode materials.
  • a layer of flat transparent material formed on the side of the TFT array substrate 1 close to the color filter substrate 2 can be patterned by a half-tone mask to form a transparent material film 3 with different thicknesses.
  • a transparent material film 3 is provided on the side of the TFT array substrate 1 close to the color filter substrate 2 to adjust the cell thickness of the transflective liquid crystal display panel.
  • the thickness of the portion of the transparent material film 3 corresponding to the reflection area 12 of the plurality of pixels 10 is smaller than the thickness of the portion corresponding to the transmission area 11 of the plurality of pixels 10, so that the portion of the transparent material film 3 corresponding to the reflection area 12 of the plurality of pixels 10 is
  • the distance between the color filter substrates 2 is greater than the distance between the transparent material film 3 corresponding to the transmission area 11 of the plurality of pixels 10 and the color filter substrate 2, that is, in the transflective liquid crystal display panel of the present invention, the reflective
  • the cell gap corresponding to zone 12 is larger than the cell gap corresponding to transmission zone 11, so that after the liquid crystal material is injected between the transparent material film 3 and the color filter substrate 2 to form the liquid crystal layer 4, the liquid crystal layer 4 corresponds to multiple pixels
  • the greater the cell thickness, the higher the light transmission efficiency of the liquid crystal layer, and the present invention provides that the cell thickness corresponding to the reflective zone 12 is larger than the cell thickness corresponding to the transmissive zone 11, so that the liquid crystal layer 4 corresponds to the reflective zone 12 Part of the light transmission efficiency is higher than the light transmission efficiency of the part of the liquid crystal layer 4 corresponding to the transmission area 11. Therefore, after the transflective liquid crystal display panel and the backlight are combined to form a transflective liquid crystal display device, if the When the battery in the transflective liquid crystal display device is low, the brightness of the backlight can be reduced, and the brightness of the ambient light reflected by the reflective area 12 can be used to achieve normal display use, reduce power consumption, and extend the battery life. Has high product quality.
  • the present invention also provides a transflective liquid crystal display device.
  • the transflective liquid crystal display device includes the above-mentioned transflective liquid crystal display panel and The TFT array substrate 1 of the transflective liquid crystal display panel is away from the backlight 9 on the side of the color filter substrate 2.
  • the structure of the transflective liquid crystal display panel will not be described repeatedly here.
  • a transparent material film 3 is provided on the side of the TFT array substrate 1 close to the color filter substrate 2 to reflect the transflective
  • the thickness of the transparent material film 3 corresponding to the reflective area 12 of the multiple pixels 10 is smaller than the thickness of the portion corresponding to the transmissive area 11 of the multiple pixels 10, so that the transparent material film 3 corresponds to the multiple
  • the distance between the portion of the reflective area 12 of the pixel 10 and the color filter substrate 2 is greater than the distance between the portion of the transparent material film 3 corresponding to the transmission area 11 of the plurality of pixels 10 and the color filter substrate 2, that is, the semi-transparent of the present invention
  • the cell gap corresponding to the reflective area 12 is larger than the cell gap corresponding to the transmissive area 11, so that a liquid crystal material is injected between the transparent material film 3 and the color film substrate 2 to form a liquid crystal layer 4 Later, the thickness of the portion of the
  • the greater the cell thickness, the higher the light transmission efficiency of the liquid crystal layer, and the present invention provides that the cell thickness corresponding to the reflective zone 12 is larger than the cell thickness corresponding to the transmissive zone 11, so that the liquid crystal layer 4 corresponds to the reflective zone 12 Part of the light transmission efficiency is higher than the light transmission efficiency of the part of the liquid crystal layer 4 corresponding to the transmission area 11. Therefore, when the transflective liquid crystal display device of the present invention is in use, if the battery power in it is low, the backlight can be reduced
  • the brightness of the source 9 utilizes the brightness of the ambient light reflected by the reflective area 12 to achieve normal display use, reduce power consumption, extend the battery life, and have higher product quality.
  • the transflective liquid crystal display panel of the present invention includes a TFT array substrate, a color filter substrate and a transparent material film disposed on the side of the TFT array substrate close to the color filter substrate.
  • the TFT array substrate includes an array array.
  • Each pixel includes a transmission area and a reflection area adjacent to the transmission area.
  • the thickness of the part of the transparent material film corresponding to the reflection area of the plurality of pixels is smaller than the thickness of the part corresponding to the transmission area of the plurality of pixels, so that The thickness of the portion of the liquid crystal layer corresponding to the reflective area of the multiple pixels is greater than the thickness of the portion corresponding to the transmissive area of the multiple pixels, thereby reducing the backlight brightness of the liquid crystal display device and using the reflective area to reflect ambient light for normal display, reducing power
  • the product quality is high.
  • the transflective liquid crystal display device of the present invention can reduce power consumption while ensuring display quality, and the product quality is high.

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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)
  • Spectroscopy & Molecular Physics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un écran d'affichage à cristaux liquides transflectif et un appareil d'affichage à cristaux liquides transflectif. L'écran d'affichage à cristaux liquides transflectif de la présente invention comprend un substrat de réseau TFT et un substrat de filtre coloré disposés en regard l'un de l'autre, et un film de matériau transparent disposé sur un côté, proche du substrat de filtre coloré, du substrat de réseau TFT, le substrat de réseau TFT comprenant une pluralité de pixels agencés dans un réseau ; chacun des pixels comprenant une région de transmission et une région de réflexion adjacente à la région de transmission ; et l'épaisseur de parties, correspondant aux régions de réflexion de la pluralité de pixels, du film de matériau transparent est inférieure à l'épaisseur de parties de celui-ci correspondant aux régions de transmission de la pluralité de pixels, de telle sorte que l'épaisseur de parties, correspondant aux régions de réflexion de la pluralité de pixels, d'une couche de cristaux liquides est supérieure à l'épaisseur de parties de celle-ci correspondant aux régions de transmission de la pluralité de pixels, et par conséquent, la luminosité d'une source de rétroéclairage de l'appareil d'affichage à cristaux liquides peut être réduite, les régions de réflexion peuvent être utilisées pour réfléchir la lumière ambiante pour un affichage normal, la consommation d'énergie peut être réduite, et la qualité du produit est relativement élevée.
PCT/CN2019/102152 2019-05-06 2019-08-23 Écran d'affichage à cristaux liquides transflectif et appareil d'affichage à cristaux liquides transflectif WO2020224094A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910372880.8 2019-05-06
CN201910372880.8A CN110109289A (zh) 2019-05-06 2019-05-06 半透半反式液晶显示面板及半透半反式液晶显示装置

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WO2020224094A1 true WO2020224094A1 (fr) 2020-11-12

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CN102169254A (zh) * 2011-02-24 2011-08-31 华映视讯（吴江）有限公司 显示面板
CN102998849A (zh) * 2012-11-16 2013-03-27 北京京东方光电科技有限公司 基于ads显示模式的半透半反式液晶面板及显示装置
CN110109289A (zh) * 2019-05-06 2019-08-09 深圳市华星光电技术有限公司 半透半反式液晶显示面板及半透半反式液晶显示装置

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