WO2019007107A1 - 修复显示面板的方法、显示面板 - Google Patents

修复显示面板的方法、显示面板 Download PDF

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Publication number
WO2019007107A1
WO2019007107A1 PCT/CN2018/080181 CN2018080181W WO2019007107A1 WO 2019007107 A1 WO2019007107 A1 WO 2019007107A1 CN 2018080181 W CN2018080181 W CN 2018080181W WO 2019007107 A1 WO2019007107 A1 WO 2019007107A1
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WIPO (PCT)
Prior art keywords
black matrix
display panel
color filter
laser
repair
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Application number
PCT/CN2018/080181
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English (en)
French (fr)
Inventor
王海平
闫旭
贾平平
席莹
郭栋
Original Assignee
京东方科技集团股份有限公司
合肥鑫晟光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 合肥鑫晟光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to JP2018562334A priority Critical patent/JP7256012B2/ja
Priority to US16/303,735 priority patent/US11237415B2/en
Priority to EP18800821.3A priority patent/EP3650926B1/en
Publication of WO2019007107A1 publication Critical patent/WO2019007107A1/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
    • G02F1/1306—Details
    • G02F1/1309—Repairing; Testing
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography

Definitions

  • the present disclosure belongs to the technical field of display panel repair, and in particular, to a method and a display panel for repairing a display panel.
  • the data input of the corresponding pixel is usually cut off, so that the entire pixel becomes a dark spot that is not displayed.
  • the human eye is less sensitive to dark spots, it is usually not easy to notice the presence of dark spots.
  • Embodiments of the present disclosure provide a method for repairing a display panel.
  • the display panel includes a plurality of pixels for display, each of the pixels includes a color filter film disposed on the substrate, and at least some of the pixels have a bright spot defect.
  • the bright spot is a constant bright spot located in a single pixel area, and the method includes: determining a pixel where the bright spot is bad and a position of the bright spot in the pixel; and setting a repaired area, where the repaired area is a region including a bad spot in the pixel And the area of the repaired area is smaller than the area of the single pixel area; a black material layer is formed in the repaired area, the black material layer is for preventing light emitted from directly below from the display surface of the display panel.
  • the plurality of pixels are spaced apart from each other, and a black matrix is disposed between the color filter films of adjacent pixels, and at least one side of the repaired region is adjacent to the black matrix, wherein a black material is formed in the repaired region.
  • the layer includes: creating a gap between the color filter film in the repaired area and the substrate by laser, and granulating a portion of the black matrix adjacent to the repaired area by laser to form black matrix particles; causing the black matrix particles to enter the gap .
  • the step of granulating the black matrix portion adjacent to the repair region by laser to form the black matrix particles is performed before the gap between the color filter film in the repair region and the substrate is generated by the laser carried out.
  • the energy of the laser used to create a gap between the color filter film in the repair zone and the substrate is higher than the energy of the laser used to granulate the black matrix portion adjacent to the repair zone.
  • the parameters of the laser that cause a gap between the color filter film in the repair zone and the substrate include: a pair of red filter films, wavelength: 349 nm; energy: 1035 to 1125 nJ; and operating rate: 60-80 ⁇ m /s; frequency: 40 ⁇ 60Hz; for green filter film, wavelength: 349nm; energy: 765 ⁇ 855nJ; operating rate: 60 ⁇ 80 ⁇ m / s; frequency: 40 ⁇ 70Hz; for blue filter film, wavelength: 349nm Energy: 540 ⁇ 810nJ; operating rate: 70 ⁇ 90 ⁇ m / s; frequency: 50 ⁇ 70Hz.
  • the parameters of the laser that partially granulates the black matrix connected to the repair zone include: wavelength: 349 nm; energy: 200-400 nJ; operating rate: 150-300 ⁇ m/s; frequency: 40-60 Hz.
  • the method further comprises: creating a gap between the color filter film in the repair zone by the laser and the substrate, and granulating the black matrix portion adjacent to the repair zone by laser to form the black matrix particle
  • the color filter film in the repair area and the black matrix adjacent to the repair area are subjected to aging treatment by laser.
  • the parameters of the laser used for the aging treatment include: wavelength: 349 nm; energy: 200-400 nJ; operating rate: 150-300 ⁇ m/s; frequency: 40-60 Hz.
  • the method further comprises uniformly diffusing the black matrix particles in the gap by laser after the black matrix particles are brought into the gap between the color filter film and the substrate.
  • the parameters of the laser that uniformly diffuse the black matrix particles in the gap include: wavelength: 349 nm; energy: 650-675 nJ; operating rate: 100-150 ⁇ m/s; frequency: 40-60 Hz.
  • forming the black material layer in the repair zone comprises: carbonizing the color filter film in the repair zone by laser.
  • the parameters of the laser used for the carbonization treatment include: a pair of red and green filter films, a wavelength: 446 nm; an energy: 1050 to 1350 nJ; an operation rate: 60 to 80 ⁇ m/s; and a blue filter film, Wavelength: 446 nm; energy: 1350 to 1590 nJ; operating rate: 60 to 80 ⁇ m/s.
  • the method further comprises: modifying the color filter film in the repair zone by laser prior to carbonizing the color filter film in the repair zone.
  • the parameters of the laser used for the modification treatment include: wavelength: 349 nm; energy: 200 to 400 nJ; operating rate: 150 to 300 ⁇ m/s; frequency: 40 to 60 Hz.
  • the display panel in the foregoing embodiment includes, but is not limited to, a liquid crystal display panel.
  • a display panel including a plurality of pixels for display, each pixel including a color filter film disposed on a substrate.
  • the color filter film of at least a portion of the pixels has an opaque region that is smaller than a single pixel region.
  • the opaque region includes a layer of black material for preventing light emerging from directly below from exiting the display surface of the display panel.
  • the plurality of pixels are spaced apart from each other, and a black matrix is disposed between the color filter films of adjacent pixels, and the opaque region is adjacent to the black matrix at least on one side, wherein the black material layer includes A black matrix particle obtained by granulating a portion of a black matrix adjacent to the opaque region by laser light.
  • the black material layer comprises a carbonized color filter film obtained by carbonizing a color filter film.
  • FIG. 1 is a schematic plan view showing a display panel before a repair method of a display panel to which an embodiment of the present disclosure is applied;
  • Figure 2 is a schematic cross-sectional view along line AA' of Figure 1;
  • FIG. 3 is a schematic structural view of the black matrix of FIG. 2 after granulation
  • FIG. 4 is a schematic structural view showing a gap formed between the color filter film and the substrate in FIG. 3;
  • FIG. 5 is a schematic structural view of the black matrix particles in FIG. 4 after uniform diffusion
  • FIG. 6 is a schematic structural view of a portion of the color filter film of FIG. 2 after carbonization
  • the reference numerals are: 1, pixel; 11, repair area; 2, color filter film; 21, gap; 22, carbonized color filter film; 3, black matrix; 31, black matrix particles; ; 9, the base.
  • an embodiment of the present disclosure provides a method for repairing a display panel bright spot defect 8 , wherein the display panel includes a plurality of pixels 1 for performing display, and each pixel 1 has a substrate 9 disposed on the substrate 9 .
  • the color filter film 2 has a bright spot defect 8 in at least part of the pixels 1, and a bright spot defect 8 is a constant bright spot located in the pixel 1.
  • the method of the embodiment is used for repairing the bright spot defect 8 in the display panel, and the applicable display panel has a plurality of pixels 1 for display, and each of the pixels 1 is provided with a color filter film 2 of a corresponding color.
  • the bright spot 8 refers to a partial area in the pixel 1 that remains illuminated while the display panel is operating. This partial area of the pixel 1 can emit light, but cannot emit light according to the brightness or the required brightness to be displayed. For example, the partial area of the pixel 1 may always maintain a certain brightness, or the brightness may be deviated from the brightness that should be displayed, so that the bright spot defect 8 is a constant bright point.
  • the above bright spot defect 8 is only located in a partial area of the pixel 1, that is, the size of the single bright spot defect 8 should be smaller than the pixel 1, and the balls other than the bright spot defect 8 in the pixel 1 can still be normally displayed.
  • the bright spot defect 8 in each drawing is merely a schematic representation of its position, and does not represent the shape of the bright spot defect 8, nor does it mean that the bright spot defect 8 is between the two substrates.
  • the above display panel includes a liquid crystal display panel.
  • the bad spot 8 is usually caused by particles in the display panel, and the liquid crystal display panel is displayed by liquid crystal deflection.
  • the presence of particles affects the liquid crystal deflection, so the liquid crystal display surface is most likely to cause bright spots.
  • the method proposed by the embodiments of the present disclosure can also be applied to repair the bright spot defect 8 existing in other types of display panels.
  • a repair method for a display panel includes the following steps.
  • the pixel 1 having the bright spot defect 8 can be found by a detecting means such as microscopic observation, and the position of the bright spot defect 8 in the pixel 1 can be determined.
  • the repair area 11 is set.
  • the repair area 11 is an area including the bright spot defect 8 in the pixel 1, but the repair area 11 does not include the entire area of the pixel 1, that is, the partial area of the pixel 1 does not belong to the repair area 11.
  • the repair area 11 is determined in the pixel 1 having the bright spot defect 8, and the repair area 11 is to include the bright spot defect 8 therein, but does not occupy the entire pixel 1, that is, a part of the pixel 1 is Does not belong to the repair area 11.
  • the repairing area 11 may be slightly larger than the bright spot defect 8, and has a regular shape such as a rectangle.
  • the color filter film 2 in the above repair region 11 is converted into black by a certain means, so that the light cannot be emitted from the repairing region 11, that is, the light at the poor spot 8 cannot be emitted. Thereby completing the repair.
  • the color filter film 2 corresponding to the position where the bright spot defect 8 is located is converted into black, so that the light at the bright spot 8 is not emitted, and thus the area corresponding to the bright spot defect 8 in the pixel will be No light, that is, a black filter film will prevent light emitted from directly below it from leaving the display surface of the display panel. Since the human eye is insensitive to dark objects, the position to be repaired (i.e., the pixel area corresponding to the poor highlight 8) is usually not noticed.
  • the repairing method proposed by the embodiment of the present disclosure has no limitation on the number of maintenance points, has a wide application range, and has high repair efficiency.
  • the plurality of pixels 1 in the display panel are spaced apart from each other, and the black matrix 3 is disposed between the color filter films 2 corresponding to the adjacent pixels 1.
  • the repairing area 11 is set such that at least one side thereof and the black matrix 3 connected.
  • a plurality of pixels 1 in a display panel are spaced apart from each other, and the interval is not displayed for arranging a driving structure such as a lead, so that a black matrix 3 for blocking light needs to be disposed at intervals, the black matrix 3 Located between the color filter films 2 corresponding to the adjacent pixels 1, the side surface of the color filter film 2 is adjacent to the black matrix 3.
  • the black matrix 3 and the adjacent color filter film 2 may also have overlapping portions, but at this time, the black matrix 3 is still located corresponding to the adjacent pixel 1. Between the color filter films 2.
  • the repairing area 11 is connected to the black matrix 3, that is, the repairing area 11 extends to the edge of the pixel 1, instead of being isolated in the middle of the pixel 1.
  • step S013 may include the following steps.
  • the color filter film 2 in the repair zone 11 and the black matrix 3 connected to the repair zone 11 may be irradiated with laser light to preheat the aging, making them more suitable for the subsequent steps.
  • the parameters of the laser light for illuminating the color filter film 2 in the repair zone 11 and the black matrix 3 connected to the repair zone 11 are: wavelength: 349 nm; energy: 200 to 400 nJ; operation rate: 150 to 300 ⁇ m /s; Frequency: 40 to 60 Hz.
  • the parameters for illuminating the color filter film in the repair zone and the black matrix connected to the repair zone are: wavelength: 349 nm; energy: 350 nJ; operating rate: 200 ⁇ m/s; frequency: 50 Hz.
  • exemplary values of the wavelength of the laser are mentioned herein, for example, 349 nm, light having other wavelength parameters is also possible, and the present invention does not limit the wavelength parameters of the laser.
  • different energies can be obtained for laser sources having the same wavelength parameters.
  • the laser parameters in the embodiments of the present disclosure are particularly suitable for processing a partial region of the pixel 1. If the pixel 1 is to be processed as a whole, the laser parameters used therein are necessarily different.
  • the black matrix 3 connected to the repairing region 11 is partially granulated by a laser to form black matrix particles 31.
  • the black matrix 3 connected to the repairing zone 11 is irradiated with a laser to break the action of molecular bonds therein, so that part of the black matrix 3 (such as the black matrix 3 near the substrate 9) is converted into black particles (black matrix particles). 31).
  • the parameters of the laser light for granulating the black matrix 3 are: wavelength: 349 nm; energy: 200 to 400 nJ; operation rate: 150 to 300 ⁇ m/s; frequency: 40 to 60 Hz.
  • the parameters of the laser light for granulating the black matrix 3 are: wavelength: 349 nm; energy: 350 nJ; operating rate: 200 ⁇ m/s; frequency: 50 Hz.
  • a gap 21 is created between the color filter film 2 in the repair area 11 and the substrate 9 by laser light.
  • the color filter film 2 in the repairing zone 11 is irradiated with laser light to cause minute shrinkage, thereby creating a gap 21 between the color filter film 2 and the substrate 9.
  • the parameters of the laser for creating a gap between the color filter film and the substrate are: a pair of red filter films, wavelength: 349 nm; energy: 1035 to 1125 nJ; operating rate: 60 to 80 ⁇ m/s; frequency : 40 ⁇ 60Hz; for green filter film, wavelength: 349nm; energy: 765 ⁇ 855nJ; operating rate: 60 ⁇ 80 ⁇ m / s; frequency: 40 ⁇ 70Hz; for blue filter film, wavelength: 349nm; energy: 540 ⁇ 810nJ; operating rate: 70 ⁇ 90 ⁇ m / s; frequency: 50 ⁇ 70Hz.
  • the laser parameters described above are: pair of red filter films, wavelength: 349 nm; energy: 1080 nJ; operating rate: 70 ⁇ m/s; frequency: 53 Hz; green filter film, wavelength: 349 nm; energy: 810 nJ Operating rate: 70 ⁇ m/s; frequency: 45 Hz; blue filter, wavelength: 349 nm; energy: 770 nJ; operating rate: 80 ⁇ m/s; frequency: 60 Hz.
  • the color filter films 2 of different colors may have different laser parameter ranges.
  • step S103-3 of causing the gap between the color filter film 2 and the substrate 9 (step S103-3) and the step of partially granulating the black matrix 3 (step S103-2) are not necessarily in a sequential relationship, but In order to avoid the occurrence of bubbles, a step of granulating the black matrix may be performed first, followed by a step of generating a gap 21.
  • the black matrix particles 31 are moved into the gap 21 between the color filter film 2 and the substrate 9.
  • the black matrix particles 31 are separated from the other portions of the black matrix 3, so that they can move freely into the gap 21 between the color filter film 2 and the substrate 9, thereby making the color filter film of the repair region 11. 2 turns black.
  • the ungrained black matrix 3 remains between the pixels 1.
  • the amount of black matrix particles 31 can be determined according to the size of the repair zone 11, and if the black matrix particles 31 are insufficient to fill the gap 21 of the entire repair zone 11, more black matrix can continue to be pelletized.
  • the black matrix particles 31 in the gap 21 are uniformly diffused by laser light.
  • the black matrix particles 31 may fall into the above gap 21 by themselves, but the distribution thereof is not necessarily uniform, and the entire repairing region 11 may not be well covered. Therefore, the black in the gap 21 can be guided by laser irradiation.
  • the matrix particles 31 move (the black matrix particles can follow the movement as the laser moves), allowing it to spread evenly throughout the gap 21.
  • the parameters of the laser for uniformly diffusing the black matrix particles in the gap include: wavelength: 349 nm; energy: 650 to 675 nJ; operating rate: 100 to 150 ⁇ m/s; frequency: 40 to 60 Hz.
  • the laser parameters for uniformly diffusing the black matrix particles in the gap are: wavelength: 349 nm; energy: 660 nJ; operating rate: 120 ⁇ m/s; frequency: 50 Hz.
  • another embodiment of the present disclosure also provides a repair method for the display panel bright spot defect 8 , which is similar to the repair method of the display panel bright spot defect 8 described in the foregoing embodiment.
  • the difference is that the specific embodiment of converting the color filter film 2 in the repair region 11 into black in this embodiment is different from the previous embodiment, in which the color filter film 2 in the repair region 11 is converted into Black can include the following steps. S203-1, the color filter film 2 in the repairing area 11 is modified by a laser.
  • the color filter film 2 in the repairing zone 11 is irradiated with laser light to change its molecular structure and improve its heat resistance, making it suitable for subsequent carbonization treatment.
  • the parameters of the laser for modifying the color filter film 2 in the repairing zone 11 are: wavelength: 349 nm; energy: 200-400 nJ; operating rate: 150-300 ⁇ m/s; frequency: 40-60 Hz .
  • the laser parameters for modifying the color filter film in the repair zone are: wavelength: 349 nm; energy: 350 nJ; operating rate: 200 ⁇ m/s; frequency: 50 Hz.
  • the color filter film 2 in the repair area 11 is carbonized by laser processing.
  • the color filter film 2 in the repair area 11 is irradiated with a laser, and is directly carbonized to form a carbonized color filter film 22. Since the carbon is black, the carbonized color filter film 22 is directly black. This is equivalent to converting the color filter film 2 in the repair area 11 to black.
  • the above laser parameters are: for red and green filter films, wavelength: 446 nm; energy: 1050 to 1350 nJ; operating rate: 60 to 80 ⁇ m/s; for blue filter film, wavelength: 446 nm; energy : 1350 ⁇ 1590nJ; operating rate: 60 ⁇ 80 ⁇ m / s.
  • the laser parameters for directly carbonizing the color filter film to form the carbonized color filter film 22 are: red and green filter films, wavelength: 446 nm; energy: 1200 nJ; operating rate: 70 ⁇ m/s; blue filter film , wavelength: 446 nm; energy: 1500 nJ; operating rate: 70 ⁇ m/s.
  • the color filter film 2 is directly carbonized and blackened, thereby achieving the purpose of converting the color filter film 2 in the repair region 11 into black. Therefore, in the present embodiment, only the color filter film 2 in the repair area 11 can be processed without having to process the black matrix 3.
  • the color filter film 2 in the repair zone 11 may be carbonized first, and then the black matrix particles 31 may be colored into carbonized color. In the gap 21 between the filter film 22 and the substrate 9.
  • Another embodiment of the present disclosure provides a display panel that is repaired by the above-described repair method of a display panel with poor highlights.
  • the display panel should be defective in the past, and the color filter film in the peripheral portion of the bright spot has been converted into black by the method of black matrix granulation, carbonization, etc., and the repair is completed.
  • This embodiment provides a display device including the above display panel.
  • the display device can be any product or component having a display function such as an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • a display function such as an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.

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  • Optics & Photonics (AREA)
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Abstract

一种显示面板、显示面板的修复方法，属于显示面板修复技术领域，其可至少部分缓解或解决显示面板中修复亮点不良（8）后会产生暗点的问题；该显示面板亮点不良（8）的修复方法适用的显示面板包括多个用于显示的像素（1），每个像素（1）包括设于基底（9）上的彩色滤光膜（2），至少部分像素（1）中有亮点不良（8），所述亮点不良（8）为位于单个像素（1）区域内的常亮点；所述显示面板的修复方法包括：确定亮点不良（8）所在的像素（1）以及亮点不良（8）在像素（1）中的位置；设定修复区（11），所述修复区（11）为像素（1）中包括亮点不良（8）的区域，且所述修复区（11）的面积小于单个像素（1）区域的面积；在所述修复区（11）形成黑色材料层，所述黑色材料层用于阻止从其正下方射出的光离开显示面板的显示面。

Description

修复显示面板的方法、显示面板
相关申请的交叉引用
本申请要求于2017年7月7日向中国专利局提交的专利申请201710549833.7的优先权利益，并且在此通过引用的方式将该在先申请的内容并入本文。
技术领域
本公开属于显示面板修复技术领域，具体涉及一种修复显示面板的方法和显示面板。
背景技术
在液晶显示面板的制备过程中不可避免的有微粒(Particle)产生，若这些颗粒落在像素(即实际进行显示的区域)中，则会对液晶偏转造成影响，其所在位置可能变成常亮的点，导致亮点不良。
为解决亮点不良，通常切断相应像素的数据输入，使像素整体成为不进行显示的暗点。这样，由于人眼对暗点敏感度较低，故通常不容易注意到暗点的存在。
但是，暗点毕竟对显示效果有影响，故各种液晶显示面板产品都对暗点数量进行了限制，甚至部分高端产品完全不允许暗点的存在。
发明内容
本公开的实施例提出一种用于修复显示面板的方法，显示面板包括多个用于显示的像素，每个像素包括设于基底上的彩色滤光膜，至少部分像素中有亮点不良，所述亮点不良为位于单个像素区域内的常亮点，所述方法包括：确定亮点不良所在的像素以及亮点不良在像素中的位置；设定修复区，所述修复区为像素中包括亮点不良的区域，且所述修复区的面积小于单个像素区域的面积；在所述修复区形成黑色材料层，所述黑色材料层用于阻止从其正下方射出的光离开显示面板的显示面。
在一些实施例中，所述多个像素彼此间隔，相邻像素的彩色滤光膜间设有黑矩阵，所述修复区至少一侧与黑矩阵相邻，其中在所述修 复区形成黑色材料层包括：通过激光使修复区中的彩色滤光膜与基底间产生间隙，以及通过激光使与修复区相邻的黑矩阵部分颗粒化，形成黑矩阵颗粒；使得黑矩阵颗粒进入所述间隙中。
进一步地，在一些实施例中，所述通过激光使与修复区相邻的黑矩阵部分颗粒化形成黑矩阵颗粒的步骤在通过激光使修复区中的彩色滤光膜与基底间产生间隙之前被执行。
在一些实施例中，用于使修复区中的彩色滤光膜与基底间产生间隙的激光的能量高于用于使与修复区相邻的黑矩阵部分颗粒化的激光的能量。
在一些实施例中，所述使修复区中的彩色滤光膜与基底间产生间隙的激光的参数包括：对红色滤光膜，波长：349nm；能量：1035～1125nJ；运行速率：60～80μm/s；频率：40～60Hz；对绿色滤光膜，波长：349nm；能量：765～855nJ；运行速率：60～80μm/s；频率：40～70Hz；对蓝色滤光膜，波长：349nm；能量：540～810nJ；运行速率：70～90μm/s；频率：50～70Hz。所述使与修复区相连的黑矩阵部分颗粒化的激光的参数包括：波长：349nm；能量：200～400nJ；运行速率：150～300μm/s；频率：40～60Hz。
在一些实施例中，所述方法还包括：在通过激光使修复区中的彩色滤光膜与基底间产生间隙，以及通过激光使与修复区相邻的黑矩阵部分颗粒化形成黑矩阵颗粒之前，通过激光对所述修复区中的彩色滤光膜以及与修复区相邻的黑矩阵进行老化处理。
在一些实施例中，用于老化处理的激光的参数包括：波长：349nm；能量：200～400nJ；运行速率：150～300μm/s；频率：40～60Hz。
在一些实施例中，所述方法还包括：在使得黑矩阵颗粒进入所述彩色滤光膜与基底间的间隙中后，通过激光使所述间隙中的黑矩阵颗粒均匀扩散。
在一些实施例中，所述使所述间隙中的黑矩阵颗粒均匀扩散的激光的参数包括：波长：349nm；能量：650～675nJ；运行速率：100～150μm/s；频率：40～60Hz。
在一些实施例中，在所述修复区形成黑色材料层包括：通过激光对修复区中的彩色滤光膜进行碳化处理。
在一些实施例中，用于碳化处理的激光的参数包括：对红色和绿 色滤光膜，波长：446nm；能量：1050～1350nJ；运行速率：60～80μm/s；对蓝色滤光膜，波长：446nm；能量：1350～1590nJ；运行速率：60～80μm/s。
在一些实施例中，所述方法还包括：在对修复区中的彩色滤光膜进行碳化处理之前，通过激光对修复区中的彩色滤光膜进行改性处理。
在一些实施例中，用于改性处理的激光的参数包括：波长：349nm；能量：200～400nJ；运行速率：150～300μm/s；频率：40～60Hz。
进一步地，前述实施例中的显示面板包括但不限于液晶显示面板。
本公开的另一实施例提供了一种显示面板，其包括多个用于显示的像素，每个像素包括设于基底上的彩色滤光膜。至少一部分像素的彩色滤光膜具有不透光区域，所述不透光区域小于单个像素区域。所述不透光区域包括黑色材料层，所述黑色材料层用于阻止从其正下方射出的光离开所述显示面板的显示面。
在一些实施例中，所述多个像素彼此间隔，相邻像素的彩色滤光膜间设有黑矩阵，所述不透光区域至少一侧与黑矩阵相邻，其中所述黑色材料层包括通过激光使与所述不透光区域相邻的黑矩阵部分颗粒化而得到的黑矩阵颗粒。
在一些实施例中，所述黑色材料层包括通过对彩色滤光膜进行碳化处理而得到的碳化的彩色滤光膜。
附图说明
图1示意性地示出应用本公开的实施例的一种显示面板的修复方法之前的显示面板的俯视结构图；
图2为图1中沿AA’的剖面结构示意图；
图3为图2中黑矩阵颗粒化后的结构示意图；
图4为图3中彩色滤光膜和基底之间形成间隙后的结构示意图；
图5为图4中黑矩阵颗粒均匀扩散后的结构示意图；
图6为图2中部分彩色滤光膜碳化后的结构示意图；
其中，附图标记为：1、像素；11、修复区；2、彩色滤光膜；21、间隙；22、碳化彩色滤光膜；3、黑矩阵；31、黑矩阵颗粒；8、亮点不良；9、基底。
具体实施方式
为使本领域技术人员更好地理解本公开的技术方案，下面结合附图和示例对本公开的实施例作进一步详细描述。
如图1至图5所示，本公开的实施例提供一种显示面板亮点不良8的修复方法，其中显示面板包括多个用于进行显示的像素1，每个像素1具有设于基底9上的彩色滤光膜2，其至少部分像素1中有亮点不良8，亮点不良8为位于像素1中的常亮点。
本实施例的方法用于修复显示面板中的亮点不良8，其适用的显示面板具有多个用于显示的像素1，每个像素1处设有相应颜色的彩色滤光膜2。亮点不良8指的是在显示面板工作时像素1中一直保持发光的部分区域。像素1的该部分区域能发光，但不能按所应显示的亮度或要求的亮度发光。例如像素1的该部分区域可能是一直保持一定的亮度，也可能其亮度与应当显示的亮度存在一定偏差，故亮点不良8即为常亮点。而且，以上亮点不良8仅位于像素1的部分区域，即单个亮点不良8的尺寸应小于像素1，像素1中除亮点不良8之外的其它球仍可正常显示。
应当理解，各附图中的亮点不良8仅仅是示意性的表示其所在位置，而并不代表亮点不良8的形状，也不代表亮点不良8处于两个基板之间。
在本公开的实施例中，以上显示面板包括液晶显示面板。
亮点不良8通常是由显示面板中的微粒(Particle)造成，而液晶显示面板靠液晶偏转实现显示，颗粒的存在会对液晶偏转造成影响，故液晶显示面最容易产生亮点不良8。本公开实施例所提出的方法也可应用于修复其它类型的显示面板中存在的亮点不良8。
下面，通过具体示例对本公开实施例提出的用于显示面板的修复方法作出具体描述。
在一个示例中，用于显示面板的修复方法包括以下步骤。
S101、确定亮点不良8所在的像素1以及亮点不良8在像素1中的位置。
例如，可通过显微镜观察等检测手段，找到有亮点不良8的像素1，并且确定亮点不良8在像素1中的位置。
S102、设定修复区11，修复区11为像素1中包括亮点不良8的区域，但修复区11不包括像素1的全部区域，即像素1的部分区域不属 于修复区11。
也就是说，在该步骤中，在具有亮点不良8的像素1中确定出修复区11，该修复区11要将亮点不良8包括在其中，但不占据整个像素1，即像素1有一部分是不属于修复区11。
在一个示例中，如图1、图2所示，为保证更好的修复效果，该修复区11可稍大于亮点不良8，且为矩形等规则的形状。
应当理解，以上步骤只是检测和确定像素1中的亮点不良8并根据亮点不良8设定针对像素1的修复区11，并不涉及对显示面板进行实际操作。
S103、将修复区11中的彩色滤光膜2转变为黑色。
也就是说，在该步骤中，通过一定的手段将以上修复区11中的彩色滤光膜2转变为黑色，使光无法从修复区11射出，也就是使亮点不良8处的光无法射出，从而完成修复。
利用本实施例的显示面板的修复方法，将亮点不良8所在位置对应的彩色滤光膜2转变为黑色，使亮点不良8处的光无法射出，这样，像素中与亮点不良8对应的区域将不发光，即，黑色的滤光膜将阻止从其正下方射出的光离开显示面板的显示面。由于人眼对暗的物体不敏感，故通常不会注意到被修复的位置(即，与亮点不良8对应的像素区域)。同时，在修复时，只使得像素1中存在亮点不良8的部分区域变暗，像素1的其它部分仍可正常显示，故修复不会在显示面板中造成完全的暗点，对显示效果的影响较小。本公开实施例提出的修复方法对维修点的数量无限制，适用范围广，且修复效率高。
在一些实施例中，显示面板中多个像素1彼此间隔，相邻像素1所对应的彩色滤光膜2间设有黑矩阵3，修复区11被设定成使得其至少一侧与黑矩阵3相连。
如图1所示，显示面板中的多个像素1相互彼此间隔，该间隔处不进行显示而用于布置引线等驱动结构，故在间隔处需要设置挡光的黑矩阵3，该黑矩阵3位于相邻像素1对应的彩色滤光膜2之间，故彩色滤光膜2的侧面与黑矩阵3相邻。当然，如图2至图5所示，由于实际工艺等原因，黑矩阵3与相邻的彩色滤光膜2也可能存在重叠部分，但此时黑矩阵3仍然是位于相邻像素1对应的彩色滤光膜2之间的。
如图1、图2所示，在此情况下，修复区11与黑矩阵3相连，即修复区11延伸到像素1的边缘，而不是孤立的处在像素1中部。
在此情况下，上述步骤S013可包括如下步骤。
S103-1、通过激光对修复区11中的彩色滤光膜2以及与修复区11相连的黑矩阵3进行老化处理。
在示例中，可以用激光照射修复区11中的彩色滤光膜2以及与修复区11相连的黑矩阵3，使它们预热老化，让它们更适于进行后续的步骤。
在实施例中，用于照射修复区11中的彩色滤光膜2以及与修复区11相连的黑矩阵3的激光的参数为：波长：349nm；能量：200～400nJ；运行速率：150～300μm/s；频率：40～60Hz。例如，在一个示例中，用于照射修复区中的彩色滤光膜以及与修复区相连的黑矩阵的参数为：波长：349nm；能量：350nJ；运行速率：200μm/s；频率：50Hz。虽然本文提到了激光的波长的示例性数值，例如，349nm，但是具有其它波长参数的光也是可行的，本发明并不对激光的波长参数作出限制。另外，借助于能量衰减器，对于具有相同波长参数的激光源，也可以获得不同的能量。
本公开实施例中的激光参数特别适用于对像素1的部分区域进行处理，若是要对像素1整体进行处理，则其采用的激光参数必然与此不同。
S103-2、通过激光使与修复区11相连的黑矩阵3部分颗粒化，形成黑矩阵颗粒31。
如图3所示，用激光照射与修复区11相连的黑矩阵3，破坏其中分子键的作用，使部分黑矩阵3(如靠近基底9的黑矩阵3)转变为黑色的颗粒(黑矩阵颗粒31)。
在实施例中，用于使得黑矩阵3颗粒化的激光的参数为：波长：349nm；能量：200～400nJ；运行速率：150～300μm/s；频率：40～60Hz。例如，用于使得黑矩阵3颗粒化的激光的参数为：波长：349nm；能量：350nJ；运行速率：200μm/s；频率：50Hz。
S103-3、通过激光使修复区11中的彩色滤光膜2与基底9间产生间隙21。
如图4所示，用激光照射修复区11中的彩色滤光膜2，使其发生 微小的收缩，从而在彩色滤光膜2与基底9之间产生间隙21。
在实施例中，用于在彩色滤光膜与基底之间产生间隙的激光的参数为：对红色滤光膜，波长：349nm；能量：1035～1125nJ；运行速率：60～80μm/s；频率：40～60Hz；对绿色滤光膜，波长：349nm；能量：765～855nJ；运行速率：60～80μm/s；频率：40～70Hz；对蓝色滤光膜，波长：349nm；能量：540～810nJ；运行速率：70～90μm/s；频率：50～70Hz。在其他实施例中，上述的激光参数为：对红色滤光膜，波长：349nm；能量：1080nJ；运行速率：70μm/s；频率：53Hz；对绿色滤光膜，波长：349nm；能量：810nJ；运行速率：70μm/s；频率：45Hz；对蓝色滤光膜，波长：349nm；能量770nJ；运行速率：80μm/s；频率：60Hz。
由于不同颜色的彩色滤光膜2对激光的透过率不同，故不同颜色的彩色滤光膜2可具有不同的激光参数范围。
应当理解，以上使彩色滤光膜2与基底9间产生间隙21的步骤(步骤S103-3)，以及使黑矩阵3部分颗粒化的步骤(步骤S103-2)并无必然的顺序关系，但为了避免产生气泡(Bubble)，可先进行使得黑矩阵颗粒化的步骤，再进行产生间隙21的步骤。
S103-4、使得黑矩阵颗粒31移动至彩色滤光膜2与基底9间的间隙21中。
如图4所示，黑矩阵颗粒31与黑矩阵3的其它部分相脱离，故可自由移动而进入彩色滤光膜2与基底9间的间隙21中，从而使得修复区11的彩色滤光膜2转变为黑色。当然，此时像素1之间仍然保留有未颗粒化的黑矩阵3。
当然，黑矩阵颗粒31的量可根据修复区11的尺寸决定，如果黑矩阵颗粒31不足以填满整个修复区11的间隙21，则可继续使更多的黑矩阵颗粒化。
S103-5、在另外的实施例中，通过激光使间隙21中的黑矩阵颗粒31均匀扩散。
如图5所示，黑矩阵颗粒31可自行落入以上间隙21中，但其分布不一定均匀，可能不能很好的覆盖整个修复区11，因此，可通过激光照射而引导间隙21中的黑矩阵颗粒31移动(当激光移动时，黑矩阵颗粒可跟随移动)，使其均匀扩散到间隙21各处。
使间隙中的黑矩阵颗粒均匀扩散的激光的参数包括：波长：349nm； 能量：650～675nJ；运行速率：100～150μm/s；频率：40～60Hz。例如，用于使间隙中的黑矩阵颗粒均匀扩散的激光参数为：波长：349nm；能量：660nJ；运行速率：120μm/s；频率：50Hz。
如图1、图2、图6所示，本公开的另一实施例也提供了显示面板亮点不良8的修复方法，其与前述实施例所述的显示面板亮点不良8的修复方法类似。区别在于，本实施例中将修复区11中的彩色滤光膜2转变为黑色的具体实施与之前的实施例不同，在该实施例中，将修复区11中的彩色滤光膜2转变为黑色可包括如下步骤。S203-1、通过激光对修复区11中的彩色滤光膜2进行改性处理。
也就是说，通过激光照射修复区11中的彩色滤光膜2，改变其分子结构，提高其耐热性，使其适于后续的碳化处理。
在实施例中，对修复区11中的彩色滤光膜2进行改性处理的激光的参数为：波长：349nm；能量：200～400nJ；运行速率：150～300μm/s；频率：40～60Hz。例如，对修复区中的彩色滤光膜进行改性处理的激光参数为：波长：349nm；能量：350nJ；运行速率：200μm/s；频率：50Hz。
S203-2、通过激光处理对修复区11中的彩色滤光膜2进行碳化处理。
如图6所示，用激光照射修复区11中的彩色滤光膜2，将其直接碳化形成碳化彩色滤光膜22，由于碳是黑色的，故该碳化彩色滤光膜22直接就是黑色，也就相当于将修复区11中的彩色滤光膜2转变为了黑色。
在一个实施例中，以上激光参数为：对红色和绿色滤光膜，波长：446nm；能量：1050～1350nJ；运行速率：60～80μm/s；对蓝色滤光膜，波长：446nm；能量：1350～1590nJ；运行速率：60～80μm/s。例如，将彩色滤光膜直接碳化形成碳化彩色滤光膜22的激光参数为：对红色和绿色滤光膜，波长：446nm；能量：1200nJ；运行速率：70μm/s；对蓝色滤光膜，波长：446nm；能量：1500nJ；运行速率：70μm/s。
也就是说，本实施例直接将彩色滤光膜2碳化变黑，从而达到将修复区11中的彩色滤光膜2转变为黑色的目的。因此，本实施例中仅对修复区11中的彩色滤光膜2进行处理即可，而不必对黑矩阵3进行处理。
当然，应当理解，前述的不同实施例所描述的方法是并不矛盾的，例如，如果需要，也可先将修复区11中的彩色滤光膜2碳化，再使黑矩阵颗粒31进入碳化彩色滤光膜22与基底9间的间隙21中。
当然，如果通过其它方法将修复区11中的彩色滤光膜2转变为黑色，也是可行的。
本公开的另一实施例提供一种显示面板，该显示面板经过上述的显示面板亮点不良的修复方法的修复。
由此，该显示面板中应当是曾经亮点不良的，且其亮点不良周围部分区域的彩色滤光膜已经过通过黑矩阵颗粒化、碳化等方法被转变为了黑色，完成了修复。
本实施例提供一种显示装置，其包括上述的显示面板。
具体的，该显示装置可为电子纸、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (17)

  1. 一种修复显示面板的方法，所述显示面板包括多个用于显示的像素，每个像素包括设于基底上的彩色滤光膜，至少部分像素中有亮点不良，所述亮点不良为位于单个像素区域内的常亮点，其中所述方法包括：
    确定亮点不良所在的像素以及亮点不良在像素中的位置；
    设定修复区，所述修复区为像素中包括亮点不良的区域，且所述修复区的面积小于单个像素区域的面积；
    在所述修复区形成黑色材料层，所述黑色材料层用于阻止从其正下方射出的光离开所述显示面板的显示面。
  2. 根据权利要求1所述的方法，其中所述多个像素彼此间隔，相邻像素的彩色滤光膜间设有黑矩阵，所述修复区至少一侧与黑矩阵相连其中在所述修复区形成黑色材料层包括：
    通过激光使修复区中的彩色滤光膜与基底间产生间隙，以及通过激光使与修复区相连的黑矩阵部分颗粒化，形成黑矩阵颗粒；
    使得黑矩阵颗粒进入所述间隙中。
  3. 根据权利要求2所述的方法，其中所述通过激光使与修复区相邻的黑矩阵部分颗粒化形成黑矩阵颗粒的步骤在通过激光使修复区中的彩色滤光膜与基底间产生间隙之前被执行。
  4. 根据权利要求2所述的方法，其中用于使修复区中的彩色滤光膜与基底间产生间隙的激光的能量高于用于使与修复区相邻的黑矩阵部分颗粒化的激光的能量。
  5. 根据权利要求4所述的方法，其中
    所述使修复区中的彩色滤光膜与基底间产生间隙的激光的参数包括：对红色滤光膜，波长：349nm；能量：1035～1125nJ；运行速率：60～80μm/s；频率：40～60Hz；对绿色滤光膜，波长：349nm；能量：765～855nJ；运行速率：60～80μm/s；频率：40～70Hz；对蓝色滤光膜，波长：349nm；能量：540～810nJ；运行速率：70～90μm/s；频率：50～70Hz；
    所述使与修复区相连的黑矩阵部分颗粒化的激光的参数包括：波长：349nm；能量：200～400nJ；运行速率：150～300μm/s；频率：40～60Hz。
  6. 根据权利要求2所述的方法，其中所述方法还包括：
    在通过激光使修复区中的彩色滤光膜与基底间产生间隙，以及通过激光使与修复区相邻的黑矩阵部分颗粒化形成黑矩阵颗粒之前，通过激光对所述修复区中的彩色滤光膜以及与修复区相连的黑矩阵进行老化处理。
  7. 根据权利要求6所述的方法，其中用于老化处理的激光的参数包括：
    波长：349nm；能量：200～400nJ；运行速率：150～300μm/s；频率：40～60Hz。
  8. 根据权利要求2所述的方法，其中所述方法还包括：
    在使得黑矩阵颗粒进入所述彩色滤光膜与基底间的间隙中后，通过激光使所述间隙中的黑矩阵颗粒均匀扩散。
  9. 根据权利要求8所述的方法，其中所述使所述间隙中的黑矩阵颗粒均匀扩散的激光的参数包括：
    波长：349nm；能量：650～675nJ；运行速率：100～150μm/s；频率：40～60Hz。
  10. 根据权利要求1所述的方法，其中在所述修复区形成黑色材料层包括：
    通过激光对修复区中的彩色滤光膜进行碳化处理。
  11. 根据权利要求10所述的方法，其中用于碳化处理的激光的参数包括：
    对红色和绿色滤光膜，波长：446nm；能量：1050～1350nJ；运行速率：60～80μm/s；对蓝色滤光膜，波长：446nm；能量：1350～1590nJ；运行速率：60～80μm/s。
  12. 根据权利要求10所述的方法，其中所述方法还包括：
    在对修复区中的彩色滤光膜进行碳化处理之前，通过激光对修复区中的彩色滤光膜进行改性处理。
  13. 根据权利要求12所述的显示面板亮点不良的修复方法，其中用于改性处理的激光的参数包括：
    波长：349nm；能量：200～400nJ；运行速率：150～300μm/s；频率：40～60Hz，其中运行速率是激光设备的行进速度。
  14. 根据权利要求1所述的方法，其中所述显示面板为液晶显示面板。
  15. 一种显示面板，包括多个用于显示的像素，每个像素包括设于基底上的彩色滤光膜，其中至少一部分像素的彩色滤光膜具有不透光区域，所述不透光区域小于单个像素区域，
    其中，所述不透光区域包括黑色材料层，所述黑色材料层用于阻止从其正下方射出的光离开所述显示面板的显示面。
  16. 根据权利要求15所述的显示面板，其中所述多个像素彼此间隔，相邻像素的彩色滤光膜间设有黑矩阵，所述不透光区域至少一侧与黑矩阵相邻，其中所述黑色材料层包括通过激光使与所述不透光区域相邻的黑矩阵部分颗粒化而得到的黑矩阵颗粒。
  17. 根据权利要求15所述的显示面板，其中所述黑色材料层包括通过对彩色滤光膜进行碳化处理而得到的碳化的彩色滤光膜。
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