WO2018086275A1 - 一种液晶显示屏及其制作方法 - Google Patents

一种液晶显示屏及其制作方法 Download PDF

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Publication number
WO2018086275A1
WO2018086275A1 PCT/CN2017/074906 CN2017074906W WO2018086275A1 WO 2018086275 A1 WO2018086275 A1 WO 2018086275A1 CN 2017074906 W CN2017074906 W CN 2017074906W WO 2018086275 A1 WO2018086275 A1 WO 2018086275A1
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Prior art keywords
substrate
alignment film
liquid crystal
sealant
color resist
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PCT/CN2017/074906
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English (en)
French (fr)
Inventor
陈猷仁
Original Assignee
惠科股份有限公司
重庆惠科金渝光电科技有限公司
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Priority to US15/553,984 priority Critical patent/US20190212593A1/en
Publication of WO2018086275A1 publication Critical patent/WO2018086275A1/zh

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    • 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
    • G02F1/1341—Filling or closing of cells
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • G02F1/133723—Polyimide, polyamide-imide
    • 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
    • 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
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136209—Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
    • 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
    • G02F1/1341—Filling or closing of cells
    • G02F1/13415—Drop filling process
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136222—Colour filters incorporated in the active matrix substrate
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device

Definitions

  • the invention relates to the technical field of liquid crystal display screens, in particular to a liquid crystal display product and a manufacturing process thereof.
  • a common Thin Film Transistor-Liquid Crystal Display (TFT-LCD) is constructed by placing a liquid crystal cell in two parallel substrates and a Thin Film Transistor (TFT) on the second substrate.
  • TFT-LCD Thin Film Transistor
  • a color filter (CF) is disposed on the first substrate, and the direction of rotation of the liquid crystal molecules is controlled by signal and voltage changes on the transistor array, thereby controlling the emission of polarized light of each pixel to achieve display. purpose.
  • Black matrix (BM) is formed on the first substrate of the liquid crystal display.
  • a film Polyimide Film, PI
  • a second substrate of the liquid crystal display panel is formed with a color filter and an alignment film.
  • a column spacer Photo Spacer, PS
  • Adhesion and closure were performed between the sealants (Sealant).
  • the display area is very narrow from the edge, so the edge design margin of the glued area is very small, and the problem that the alignment film and the frame glue interfere with each other is always encountered, and when the color filter is matched with the transistor
  • the structure is designed for the liquid crystal display, it is very convenient to use the cushion layer and the color resistance to make the retaining wall, and block the diffusion of the oriented film to the outside. Since the adhesion property of the alignment film is poor, the corresponding tensile force of the sealant cannot be withstood, so that the sealant attached thereto is very likely to be peeled off.
  • the alignment film on the first substrate has no blocking structure to restrict the flow and diffusion thereof, the alignment film may intervene in the interface between the sealant and the black matrix, resulting in peeling of the sealant.
  • the existing One Drop Filling (ODF) method is to apply an alignment film and then apply a frame glue to the liquid crystal, and finally to the composition box. Therefore, the problem of the flow and diffusion of the alignment film cannot be overcome in accordance with the existing process technology.
  • the technical problem to be solved by the present invention is to prevent the liquid crystal display panel from encountering the diffusion of the alignment film into the frame glue and the black matrix region during the narrow bezel design, thereby causing the frame glue to peel off.
  • Another technical problem to be solved by the present invention is to improve the existing liquid crystal dropping process and overcome the liquid crystal peeling of the sealant.
  • the liquid crystal display panel includes a first substrate and a second substrate, and the second substrate is a transistor array substrate, and the color resistance of the liquid crystal display is located at the same level as the pad layer. On the two substrate sides, the distance between the alignment film of the first substrate and the sealant is zero.
  • the color resist may be divided into a first color resist and a second color resist, wherein the first color resist is located in a display area of the second substrate, and a slit design exists between the first color resists;
  • the second color resist is located at an edge of the second substrate adjacent to the sealant, and includes a combination of at least one of a red resistance, a blue resistance or a green resistance, and the second color resistance does not have a slit design.
  • the alignment film of the first substrate is deposited before the sealant, and the thickness of the end of the alignment film is greater than the thickness of the display region end of the alignment film.
  • the liquid crystal dropping process includes: first coating a sealant on the first substrate, and then coating the alignment film on the first substrate, so that the frame The glue forms a barrier structure around the first substrate to block the diffused diffusion of the alignment film; first coating the frame glue on the second substrate, and then coating the alignment film on the second substrate, adjacent to the second substrate, adjacent The second color resist structure of the sealant region is a barrier structure to block the diffuse diffusion of the alignment film.
  • the liquid crystal display panel includes a first substrate and a second substrate, and the second substrate is a transistor array substrate, and the color resistance of the liquid crystal display is located at the same level as the pad layer.
  • a substrate, the distance between the alignment film of the second substrate and the sealant is zero.
  • the alignment film of the second substrate is deposited before the sealant, and the thickness of the end of the alignment film is greater than the thickness of the display region end of the alignment film.
  • the liquid crystal dropping process includes: first applying a sealant to the second substrate, and then coating the alignment film on the second substrate, so that the frame The glue forms a barrier structure around the second substrate to block the diffused diffusion of the alignment film; first coating the frame glue on the first substrate, and then coating the alignment film on the first substrate, adjacent to the first substrate, adjacent The color resist structure of the sealant region is a barrier structure to block the diffuse diffusion of the alignment film.
  • the sealant is used for adhering the first substrate and the second substrate, the material of which is non-thermosetting, or the curing temperature of the sealant is higher than that of the oriented film.
  • the curing temperature is higher.
  • the alignment film is coated on the first substrate and the second substrate to form a uniform alignment layer, so that liquid crystal molecules located between the two substrates are oriented in a certain direction. Pretilt angle.
  • the black matrix is configured to block scan lines and data lines on the first substrate and the second substrate and to divide adjacent first color resists.
  • the underlayer is adapted to resist pressure applied to the liquid crystal panel to support and maintain a distance between the first substrate and the second substrate.
  • the invention has the beneficial effects that the existing liquid crystal dropping process is improved, and the first substrate and the second substrate can be avoided when the color filter process on the transistor and the upper pad layer of the transistor are applied to the narrow frame design of the liquid crystal display.
  • the problem of peeling off the frame rubber, improving the yield of the finished product, and the process is simple, efficient, and does not increase the cost.
  • FIG. 1 is a structural diagram of a liquid crystal display screen applied to a color filter process on a transistor and a pad on a transistor.
  • FIG. 2 is a schematic view showing a liquid crystal dropping process of a first substrate according to an embodiment of the present invention.
  • FIG. 3 is a flow chart of a liquid crystal dropping process of the first substrate.
  • Fig. 4 is a structural diagram of a liquid crystal display screen applied to a non-transistor color filter process plus a non-transistor upper pad layer.
  • FIG. 5 is a schematic diagram of a second substrate liquid crystal dropping process according to an embodiment of the invention.
  • Figure 6 is a flow chart showing the structure of the liquid crystal dropping of the second substrate.
  • the word “comprising” is to be understood to include the component, but does not exclude any other component.
  • “on” means located above or below the target component, and does not mean that it must be on the top based on the direction of gravity.
  • the sealant is used to adhere the first substrate and the second substrate, the material of which is non-thermosetting, or the curing temperature of the sealant is higher than that of the oriented film.
  • the curing temperature is higher.
  • the color resist includes a main body portion and an extension portion, and may be divided into a first color resist and a second color resist, wherein the first color resist is located in a display area of the second substrate, There is a slit design between the first color resist, including a red resistance, a blue resistance, and a green resistance for presenting a plurality of colors; a slit design exists between the first color resistance; the second color resistance Located on the second substrate The edge is adjacent to the sealant, and includes a combination of at least one of a red resist, a blue resist, or a green resist.
  • the second resist has no slit design and can serve as a barrier structure.
  • the alignment film is coated on the first substrate and the second substrate to form a uniform alignment layer, so that liquid crystal molecules located between the two substrates are oriented in a certain direction. Pretilt angle.
  • the alignment film can be divided into a first alignment film and a second alignment film, the first alignment film is disposed on the first substrate, and the second alignment film is disposed on the second substrate.
  • the second alignment film is surrounded by the second color resist and is located on the first color resist, covering the first color resist, wherein the slit between the first color resist and the first A slit between the color resist and the second color resist is filled by the second alignment film.
  • the underlayer includes an upper portion and a lower portion disposed on the second substrate, and a lower portion of the underlayer is located on the blue resist of the first color resist and is Surrounded by a second alignment film, an upper portion of the underlayer is in contact with a solid portion of the black matrix of the first substrate, and is surrounded by the first alignment film for resisting application to a liquid crystal panel Pressure, supporting and maintaining a distance between the first substrate and the second substrate.
  • the black matrix is disposed between the first substrate and the first alignment film, the first alignment film and the sealant cover the black matrix, the black
  • the matrix includes a solid portion, and a hollow portion adjacent to the solid portion, the solid portion of the black matrix covering scan lines and data lines on the first substrate and the second substrate, the black matrix dividing adjacent
  • the first color resist has a hollow portion filled by the first alignment film.
  • FIG. 1 is a structural diagram of a liquid crystal panel applied to a color filter process on a transistor and a pad on a transistor.
  • the pad layer 103 of the liquid crystal display and the first color resist 104 are located on the second substrate side. .
  • the sealant 101 and the alignment film 102 of the first substrate 100 are coated, the sealant 101 is applied first, and then the alignment film 102 is coated, and the layout structure of the sealant 101 is used as a retaining wall to block the first The diffuse diffusion of an oriented film 102.
  • the distance between the first alignment film 102 of the first substrate 100 and the sealant 101 is 0, and the first alignment film 102 is deposited before the sealant 101, the first alignment film.
  • the thickness (t1) of the end of 102 is greater than the thickness (t2) at the end of the display region, and the relationship between t1 and t2 is t1>t2.
  • the sealant 101 and the second alignment film 102 of the second substrate 200 are coated, the sealant 101 is first coated, and then the second alignment film 102 is coated, and the second substrate 200 is adjacent to the sealant.
  • the region of 101 has a first color resist 104, and the first color resist 104 can be utilized as a retaining wall to block diffuse diffusion of the second alignment film 102.
  • the distance between the second alignment film 102 of the second substrate 200 and the first color resist 104 is 0, the first color resist 104 and the sealant 101 and the second color
  • the distance between the resistors is not equal to 0, and the black matrix 105 covers the first color resist 104 and the sealant 101 and the slit between the first color resist 104 and the second color resist.
  • FIG. 2 it is a schematic diagram of a liquid crystal dropping process of the first substrate, please refer to the liquid crystals of the first and second substrates of FIG. 3 at the same time. Drop the process flow chart.
  • the liquid crystal dropping process of the present application only needs to change the original process sequence to avoid the problem of peeling off the frame glue.
  • the improved liquid crystal dropping process is as follows:
  • step S101 the sealant 202 is applied to the first substrate 201, and the sealant 202 itself may form a barrier structure around the first substrate 201.
  • step S102 the alignment film 203 is coated on the first substrate, and the alignment film 203 is diffused to the periphery of the first substrate until the alignment film 203 is in contact with the sealant 202.
  • the barrier structure of the sealant 202 can block the diffusion of the alignment film 203.
  • the alignment film 203 is deposited before the sealant 202.
  • Step S103 is applied to the second substrate.
  • step S104 the alignment film is coated on the second substrate, and a color resistance exists in a region close to the second substrate sealant. With the color resistance as a retaining wall, the diffused diffusion of the alignment film can be blocked.
  • the sealant 202 can be used to block the diffusion of the alignment film 203, thereby avoiding the narrow border of the liquid crystal display. At the time of design, the peeling of the sealant 202 occurred.
  • the sealant material also needs to be adjusted accordingly.
  • the sealant material must be matched with a non-thermosetting type or a material having a curing temperature higher than that of the oriented film, so that when the oriented film is thermally cured At the same time, the sealant can be prevented from being affected by the curing temperature of the alignment film, and after the first substrate and the second substrate are processed to form the cartridge, the sealant curing reaction is performed without affecting the structural performance of the display panel.
  • the method further includes a liquid crystal layer disposed on the sealant, the first alignment film, the second alignment film, the second alignment film, and the second color resistance
  • the liquid crystal space is commonly accommodated and filled in the liquid crystal space.
  • FIG. 4 is a non-transistor color filter process plus a non-transistor.
  • the color resist 104 and the pad layer 103 are located on the first substrate side, and can be reversed at this time, when the sealant 101 of the first substrate 100 and the alignment film 102 are applied. First, the sealant 101 is applied, and then the alignment film 102 is coated.
  • the first substrate 100 has a color resist 104 in a region close to the sealant 101, and the color resist 104 can be used as a retaining wall to block the diffused diffusion of the alignment film 102. .
  • the distance between the alignment film 102 of the first substrate and the color resist 104 is zero.
  • the sealant 101 and the alignment film 102 are applied to the second substrate 200, the sealant 101 is applied first, and then the alignment film 102 is coated, and the layout structure of the sealant 101 is used as a retaining wall to block the alignment film.
  • the spread of 102 spread is used as a retaining wall to block the alignment film.
  • the distance between the alignment film 102 of the second substrate 200 and the sealant 101 is 0, and the alignment film 102 is deposited before the sealant 101, and the thickness (t1) of the end of the alignment film 102 is greater than The thickness of the display area end (t2), and the relationship between t1 and t2 is t1>t2.
  • FIG. 5 it is a schematic diagram of a liquid crystal dropping process of the second substrate. Please refer to the liquid crystal dropping process flow chart of the first and second substrates of FIG. 6 simultaneously, and the liquid crystal dropping process is as follows:
  • step S201 the sealant 302 is applied to the second substrate 301, and the sealant 302 itself may form a barrier structure around the second substrate 301.
  • step S202 the alignment film 303 is coated on the second substrate, and the alignment film diffuses into the periphery of the second substrate until the alignment film 303 is in contact with the sealant 302.
  • the barrier structure of the sealant 302 can block the alignment film 303 from continuing to diffuse and then diffuse.
  • the alignment film 303 is deposited before the sealant 302.
  • Step S203 is applied to the first substrate.
  • step S204 the alignment film is coated on the first substrate, and a color resistance exists in a region close to the first substrate sealant. With the color resistance as a retaining wall, the diffused diffusion of the alignment film can be blocked.
  • the sealant 302 can be used to block the diffusion of the alignment film 303, so as to avoid the appearance of the sealant 302 when the narrow frame design of the liquid crystal display is performed. Peeling phenomenon.

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Abstract

一种液晶显示屏，其包括第一基板（100，201）和第二基板（200，301），第二基板（200，301）为晶体管阵列基板，液晶显示屏的色阻（104）与垫层（103）同位于第二基板（200，301）侧。一种液晶显示屏的制程方法，其液晶滴下的步骤包括：先涂布框胶（101，202，302）于第一基板（100，201），再涂布取向膜（102，203，303）于第一基板（100，201），使得框胶（101，202，302）能阻挡取向膜（102，203，303）的漫流扩散。

Description

一种液晶显示屏及其制作方法 技术领域
本发明涉及液晶显示屏技术领域，尤其涉及液晶显示屏产品及其制作工艺。
背景技术
液晶显示屏(Liquid Crystal Display,LCD)。常见的晶体管阵列-液晶显示屏(Thin Film Transistor-Liquid Crystal Display，TFT-LCD)的构造是在两片平行的基板当中放置液晶盒，第二基板上设置晶体管阵列(Thin Film Transistor,TFT)，第一基板上设置彩色滤光片(Color Filter，CF)，通过晶体管阵列上的信号与电压改变来控制液晶分子的转动方向，从而达到控制每个像素点偏振光的出射与否，进而达到显示目的。
液晶显示屏发展至今，已经成熟的推出晶体管上滤色器(Color Filter On TFT,COT)技术来实现更高要求的应用，液晶显示屏的第一基板上形成有黑矩阵(Black Matrix,BM)、取向膜(Polyimide Film,PI)，液晶显示屏的第二基板形成有彩色滤光片、取向膜。在液晶显示屏的第一基板和第二基板之间形成用于保持液晶单元的单元间隙的柱状衬垫料——垫层(Photo Spacer,PS)；液晶显示屏的第一基板和第二基板之间通过框胶(Sealant)进行粘连和封闭。
液晶显示屏进行窄边框设计时，显示区离边缘非常窄，所以框胶区域的边缘设计裕度非常小，总会遇到取向膜与框胶互相干涉的问题，而当搭配晶体管上滤色器结构进行液晶显示屏设计时，则可以非常方便的利用垫层与色阻制作挡墙，阻挡取向膜往外漫流扩散。由于取向膜的附着性能较差，无法承受框胶相应的拉力，使得附着于其上的框胶非常容易出现剥离的问题。
但是，随着制程的变更推新，晶体管上滤色器制程加晶体管上垫层(PS on TFT,POT)应用时，第一基板上原来的垫层挡墙不复存在，如此设计窄边框产品时，第一基板上的取向膜则没有阻挡结构去限制其漫流与扩散，最终会发生取向膜介入框胶与黑矩阵之间的介面，导致框胶剥离。
现有的液晶滴下制程(One Drop Filling，ODF)，都是先涂布取向膜再涂框胶而后滴入液晶，最后对组成盒。因此，依照现有的制程技术无法克服取向膜漫流与扩散的问题。
发明内容
本发明要解决的技术问题是：避免液晶显示屏在进行窄边框设计时遭遇取向膜漫流扩散至框胶和黑矩阵区域而导致框胶剥离。
本发明要解决的另一个技术问题是：改进现有的液晶滴下制程工艺，并克服框胶剥离的液晶 显示屏工艺缺陷，提高成品良率，且所述工艺具有简单、高效、不提高成本的特点。
在本发明的一实施例中，所述的一种液晶显示屏，其包括第一基板和第二基板，第二基板为晶体管阵列基板，所述液晶显示屏的色阻与垫层同位于第二基板侧，第一基板的取向膜与框胶之间距离为0。所述色阻可分为第一色阻和第二色阻，其中所述第一色阻位于所述第二基板的显示区，所述第一色阻之间存在狭缝设计；所述第二色阻，位于所述第二基板的边缘，临近所述框胶，包括红色阻，蓝色阻或绿色阻中至少一种的组合，所述第二色阻不存在狭缝设计。
在本发明的一实施例中，所述第一基板的取向膜堆积于框胶之前，且取向膜末端厚度大于取向膜显示区域端厚度。
在本发明的一实施例中，所述的一种液晶显示屏的制程，其液晶滴下制程包括：先涂布框胶于第一基板，再涂布取向膜于第一基板，使得所述框胶在第一基板的四周形成一层阻挡结构，以阻挡所述取向膜的漫流扩散；先涂布框胶于第二基板，再涂布取向膜于第二基板，在第二基板四周，临近框胶区域的第二色阻结构为一层阻挡结构，以阻挡所述取向膜的漫流扩散。
在本发明的一实施例中，所述的一种液晶显示屏，其包括第一基板和第二基板，第二基板为晶体管阵列基板，所述液晶显示屏的色阻与垫层同位于第一基板，第二基板的取向膜与框胶之间距离为0。
在本发明的一实施例中，所述第二基板的取向膜堆积于框胶之前，且所述取向膜末端厚度大于取向膜显示区域端厚度。
在本发明的一实施例中，所述的一种液晶显示屏的制程，其液晶滴下制程包括：先涂布框胶于第二基板，再涂布取向膜于第二基板，使得所述框胶在第二基板的四周形成一层阻挡结构，以阻挡所述取向膜的漫流扩散；先涂布框胶于第一基板，再涂布取向膜于第一基板，在第一基板四周，临近框胶区域的色阻结构为一层阻挡结构，以阻挡所述取向膜的漫流扩散。
在本发明的一实施例中，所述框胶用于粘连所述第一基板和所述第二基板，其材料为非热固化型，或者所述框胶的固化温度比所述取向膜的固化温度更高。
在本发明的一实施例中，所述取向膜涂布于所述第一基板和所述第二基板上，形成一层均匀的取向层，使位于两基板之间的液晶分子取向为一定方向的预倾角。
在本发明的一实施例中，所述黑矩阵用于阻挡所述第一基板和所述第二基板上的扫描线和数据线以及分割相邻所述第一色阻。
在本发明的一实施例中，所述垫层用于抵御施加于液晶面板上的压力，支撑和维持所述第一基板和所述第二基板间的距离。
有益效果
本发明的有益效果在于：改进了现有的液晶滴下制程，能实现在晶体管上滤色器制程加晶体管上垫层应用于液晶显示屏的窄边框设计时，避免第一基板和第二基板出现框胶剥离的问题，提高成品良率，且所述工艺具有简单、高效、不提高成本的特点。
附图说明
图1晶体管上滤色器制程加晶体管上垫层应用的液晶显示屏结构图。
图2本发明一实施例的第一基板液晶滴下制程示意图。
图3第一基板的液晶滴下工艺流程图。
图4非晶体管上滤色器制程加非晶体管上垫层应用的液晶显示屏结构图。
图5本发明一实施例的第二基板液晶滴下制程示意图。
图6第二基板的液晶滴下结构流程图。
本发明的实施方式
以下各实施例的说明是参考附加的图式，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。
附图和说明被认为在本质上是示出性的，而不是限制性的。在图中，结构相似的单元是以相同标号表示。另外，为了理解和便于描述，附图中示出的每个组件的尺寸和厚度是任意示出的，但是本申请不限于此。
在附图中，为了清晰起见，夸大了层、膜、面板、区域等的厚度。在附图中，为了理解和便于描述，夸大了一些层和区域的厚度。将理解的是，当例如层、膜、区域或基底的组件被称作“在”另一组件“上”时，所述组件可以直接在所述另一组件上，或者也可以存在中间组件。
另外，在说明书中，除非明确地描述为相反的，否则词语“包括”将被理解为意指包括所述组件，但是不排除任何其它组件。此外，在说明书中，“在......上”意指位于目标组件上方或者下方，而不意指必须位于基于重力方向的顶部上。
为更进一步阐述本申请为达成预定发明目的所采取的技术手段及功效，以下结合附图及较佳实施例，对本申请提出的一种液晶显示屏结构其具体实施方式、结构、特征以及功效，详细说明如后。
在本申请的一实施例中，所述框胶用于粘连所述第一基板和所述第二基板，其材料为非热固化型，或者所述框胶的固化温度比所述取向膜的固化温度更高。
在本申请的一实施例中，所述色阻包括主体部和延长部，可分为第一色阻和第二色阻，其中所述第一色阻位于所述第二基板的显示区，所述第一色阻之间存在狭缝设计，包括红色阻，蓝色阻，绿色阻，用于呈现多种颜色；所述第一色阻之间存在狭缝设计；所述第二色阻，位于所述第二基板 的边缘，临近所述框胶，包括红色阻，蓝色阻或绿色阻中至少一种的组合，所述第二色阻不存在狭缝设计，可作为一层阻挡结构。
在本申请的一实施例中，所述取向膜涂布于所述第一基板和所述第二基板上，形成一层均匀的取向层，使位于两基板之间的液晶分子取向为一定方向的预倾角。所述取向膜可分为第一取向膜和第二取向膜，所述第一取向膜，设置于所述第一基板上；所述第二取向膜，设置于所述第二基板上，所述第二取向膜被所述第二色阻所包围，并位于所述第一色阻上，覆盖所述第一色阻，其中所述第一色阻之间的狭缝以及所述第一色阻和所述第二色阻之间的狭缝由所述第二取向膜所填充。
在本申请的一实施例中，所述垫层包括上部和下部，设置于所述第二基板上，所述垫层的下部位于所述第一色阻的蓝色阻上，并被所述第二取向膜所包围，所述垫层的上部与所述第一基板的所述黑矩阵的实体部分相接触，并被所述第一取向膜所包围，用于抵御施加于液晶面板上的压力，支撑和维持所述第一基板和所述第二基板间的距离。
在本申请的一实施例中，所述黑矩阵设置于所述第一基板和所述第一取向膜之间，所述第一取向膜和所述框胶覆盖所述黑矩阵，所述黑矩阵包括实体部分，以及与实体部分相邻的镂空部分，所述黑矩阵的实体部分覆盖所述第一基板和所述第二基板上的扫描线和数据线，所述黑矩阵分割相邻的所述第一色阻，其镂空部分由所述第一取向膜所填充。
本申请一种液晶显示屏的一实施例，所述液晶显示屏包括第一基板和第二基板，第二基板为晶体管阵列基板。如图1所示，图1为晶体管上滤色器制程加晶体管上垫层应用的液晶面板结构图，所述液晶显示屏的垫层103与第一色阻104同位于所述第二基板侧。
在进行所述第一基板100的框胶101和取向膜102涂布时，先涂布框胶101，再涂布取向膜102，利用框胶101的布局结构作为挡墙，以阻挡所述第一取向膜102的漫流扩散。
其中，所述第一基板100的第一取向膜102与所述框胶101之间的距离为0，且所述第一取向膜102堆积于所述框胶101之前，所述第一取向膜102末端厚度(t1)大于其在显示区域端的厚度(t2)，t1与t2之间的关系为t1>t2。
在进行所述第二基板200的框胶101和所述第二取向膜102涂布时，先涂布框胶101，再涂布所述第二取向膜102，第二基板200在靠近框胶101的区域有第一色阻104存在，可利用所述第一色阻104作为挡墙，以阻挡所述第二取向膜102的漫流扩散。
其中，所述第二基板200的所述第二取向膜102和所述第一色阻104之间的距离为0，所述第一色阻104与所述框胶101以及所述第二色阻之间的距离不等于0，黑矩阵105涵盖所述第一色阻104和所述框胶101以及所述第一色阻104和所述第二色阻之间的狭缝。
如图2所示，其为第一基板的液晶滴下制程示意图，请同时参考图3的第一、第二基板的液晶 滴下工艺流程图。本申请的液晶滴下制程只需改变原有的工艺流程顺序，就可以避免出现框胶剥离的问题，改良后的液晶滴下制程如下所示：
步骤S101框胶202涂布于第一基板201，框胶202自身可以在第一基板201的四周形成一层阻挡结构。
步骤S102在第一基板上涂布取向膜203，取向膜203向第一基板的四周漫流扩散，直至取向膜203与框胶202接触，利用框胶202的阻挡结构可阻挡取向膜203继续漫流扩散，而后取向膜203堆积于框胶202之前。
步骤S103框胶涂布于第二基板。
步骤S104取向膜涂布于第二基板，在靠近第二基板框胶的区域有色阻存在，利用所述色阻作为挡墙，可以阻挡所述取向膜的漫流扩散。
根据这种工艺技术，即使在第一基板201上没有相应的垫层或色阻作为挡墙，依然能够改而利用框胶202来阻挡取向膜203漫流扩散，避免在进行液晶显示屏的窄边框设计时，出现框胶202剥离的现象。
在改变制程顺序的同时，框胶材料也需要做相应的调整，框胶材料必须搭配为非热固化型或是固化温度比取向膜的固化温度更高的材料，如此，当取向膜进行热固化时，才能使框胶不受取向膜固化温度影响，并在第一基板和第二基板对组成盒的工艺流程后，在不影响显示屏结构性能的基础上进行框胶固化反应。
在本申请的一实施例中，还包括一液晶层，设置于由所述框胶，所述第一取向膜，所述第二取向膜，所述第二取向膜以及所述第二色阻共同容置出的液晶空间内，并填充所述液晶空间。
本申请一种液晶显示屏的又一实施例，当非晶体管上滤色器制程加非晶体管上垫层应用时，如图4所示，图4为非晶体管上滤色器制程加非晶体管上垫层应用的液晶面板结构图，色阻104与垫层103同样是位于所述第一基板侧，此时可反过来实施，在进行第一基板100的框胶101和取向膜102涂布时，先涂布框胶101，再涂布取向膜102，第一基板100在靠近框胶101的区域有色阻104存在，可利用色阻104作为挡墙，以阻挡所述取向膜102的漫流扩散。
其中，所述第一基板的取向膜102和色阻104之间的距离为0。
在进行第二基板200涂布框胶101和取向膜102时，先涂布框胶101，再涂布取向膜102，利用所述框胶101的布局结构作为挡墙，以阻挡所述取向膜102的漫流扩散。
其中，所述第二基板200的取向膜102与所述框胶101之间距离为0，且所述取向膜102堆积于框胶101之前，所述取向膜102末端厚度(t1)大于其在显示区域端的厚度(t2)，t1与t2之间的关系为t1>t2。
如图5所示，其为第二基板的液晶滴下制程示意图，请同时参考图6的第一、第二基板的液晶滴下工艺流程图，其液晶滴下制程如下所示：
步骤S201框胶302涂布于第二基板301，框胶302自身可以在第二基板301的四周形成一层阻挡结构。
步骤S202在第二基板涂布取向膜303，取向膜向第二基板的四周漫流扩散，直至取向膜303与框胶302接触，利用框胶302的阻挡结构可阻挡取向膜303继续漫流扩散，而后取向膜303堆积于框胶302之前。
步骤S203框胶涂布于第一基板。
步骤S204取向膜涂布于第一基板，在靠近第一基板框胶的区域有色阻存在，利用所述色阻作为挡墙，可以阻挡所述取向膜的漫流扩散。
在第二基板301上没有相应的垫层或色阻作为挡墙，依然能够改而利用框胶302来阻挡取向膜303漫流扩散，避免在进行液晶显示屏的窄边框设计时，出现框胶302剥离的现象。
以上所述实施例仅是为充分说明本申请而举的较佳实施例，并非对本申请作任何形式上的限制，虽然本申请已以较佳实施例揭露如上，但本申请的保护范围不限于此。本技术领域的技术人员在本申请基础上所做的等同替代或变换，均在本申请的保护范围之内。本申请的保护范围以权利要求书为准。

Claims (16)

  1. 一种液晶显示屏，包括：
    一第一基板；
    一第二基板；
    一框胶，设置于所述第一基板和所述第二基板之间；
    其中，色阻与垫层同位于所述第一基板或所述第二基板侧。
  2. 如权利要求1所述的液晶显示屏，其中所述第二基板为晶体管阵列阵列基板。
  3. 如权利要求1所述的液晶显示屏，当所述色阻与所述垫层同位于所述第二基板，更包括一取向膜，设置于所述第一基板。
  4. 如权利要求3所述的液晶显示屏，其中所述取向膜与所述框胶之间的距离为0，所述取向膜堆积于所述框胶之前。
  5. 如权利要求3所述的液晶显示屏，其中所述取向膜末端厚度大于所述取向膜显示区域端厚度。
  6. 如权利要求1所述的液晶显示屏，当所述色阻与所述垫层同位于所述第一基板，更包括一取向膜，设置于所述第二基板。
  7. 如权利要求6所述的液晶显示屏，其中所述取向膜与所述框胶之间的距离为0，所述取向膜堆积于所述框胶之前。
  8. 如权利要求6所述的液晶显示屏，其中所述取向膜堆积于框胶之前，取向膜末端厚度大于所述取向膜显示区域端厚度。
  9. 一种液晶显示屏的制程，其第一基板液晶滴下的步骤包括：
    涂布框胶于第一基板；
    涂布取向膜于第一基板；
    一层阻挡结构，由设置于所述第一基板四周的框胶所构成，或是由设置于所述第一基板四周且临近框胶区域的色阻所构成。
  10. 如权利要求9所述的液晶显示屏的制程，当所述阻挡结构由设置于所述第一基板四周的框胶所构成，其第二基板的液晶滴下的步骤，包括：
    涂布框胶于第二基板；
    涂布取向膜于第二基板；
    其中所述在第二基板四周，临近框胶区域的色阻为一层阻挡结构。
  11. 如权利要求10所述的液晶显示屏的制程，其中所述框胶的材料为非热固化型。
  12. 如权利要求10所述的液晶显示屏的制程，其中所述框胶的固化温度比所述取向膜的固化温度 高。
  13. 如权利要求9所述的液晶显示屏的制程，当所述阻挡结构由设置于所述第一基板四周且临近框胶区域的色阻所构成，其第二基板的液晶滴下的步骤，包括：
    涂框胶于第二基板；
    涂布取向膜于第二基板；
    其中所述框胶在第二基板的四周形成一层阻挡结构。
  14. 如权利要求13所述的液晶显示屏的制程，其中所述框胶的材料为非热固化型。
  15. 如权利要求13所述的液晶显示屏的制程，其中所述框胶的固化温度比所述取向膜的固化温度高。
  16. 一种液晶显示屏，包括：
    一第一基板；
    一第二基板；
    一框胶，设置于所述第一基板和所述第二基板之间；
    一第一取向膜，设置于所述第一基板上；
    一黑矩阵，所述黑矩阵设置于所述第一基板和所述第一取向膜之间，所述第一取向膜和所述框胶覆盖所述黑矩阵，所述黑矩阵包括实体部分，以及与实体部分相邻的镂空部分，所述黑矩阵的实体部分覆盖所述第一基板和所述第二基板上的扫描线和数据线；镂空部分由所述第一取向膜所填充；
    一色阻层，设置于所述第二基板上，所述色阻层可分成第一色阻和第二色阻两部分，包括：
    一第一色阻，位于所述第二基板的显示区，所述第一色阻之间存在狭缝设计，所述黑矩阵分割相邻的第一色阻；
    一第二色阻，位于所述第二基板的边缘，临近所述框胶，包括红色阻，蓝色阻或绿色阻中至少一种的组合，所述第二色阻不存在狭缝设计，在临近所述框胶的区域，所述第二色阻环绕形成一层阻挡结构，所述第二色阻与所述框胶以及所述第一色阻之间的距离不等于0，所述黑矩阵涵盖所述第二色阻和所述框胶以及所述第二色阻和所述第一色阻之间的狭缝；
    一第二取向膜，设置于所述第二基板上，所述第二取向膜被所述第二色阻所包围，并位于所述第一色阻上，覆盖所述第一色阻，其中所述第一色阻之间的狭缝以及所述第一色阻和所述第二色阻之间的狭缝由所述第二取向膜所填充；
    一垫层，包括上部和下部，设置于所述第二基板上，所述垫层的下部位于所述第一色阻的蓝色阻上，并被所述第二取向膜所包围，所述垫层的上部与所述第一基板的所述黑矩阵的实体部分相接 触，并被所述第一取向膜所包围；
    一液晶层，设置于由所述框胶，所述第一取向膜，所述第二取向膜以及所述第二色阻共同容置出的液晶空间内，并填充所述液晶空间。
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