WO2021168683A1 - 液晶显示面板及液晶显示装置 - Google Patents

液晶显示面板及液晶显示装置 Download PDF

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Publication number
WO2021168683A1
WO2021168683A1 PCT/CN2020/076751 CN2020076751W WO2021168683A1 WO 2021168683 A1 WO2021168683 A1 WO 2021168683A1 CN 2020076751 W CN2020076751 W CN 2020076751W WO 2021168683 A1 WO2021168683 A1 WO 2021168683A1
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WO
WIPO (PCT)
Prior art keywords
substrate
orthographic projection
spacer
liquid crystal
crystal display
Prior art date
Application number
PCT/CN2020/076751
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English (en)
French (fr)
Inventor
江亮亮
李恒
郭磊
戴珂
廖燕平
李承珉
Original Assignee
京东方科技集团股份有限公司
合肥京东方显示技术有限公司
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Application filed by 京东方科技集团股份有限公司, 合肥京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to PCT/CN2020/076751 priority Critical patent/WO2021168683A1/zh
Priority to US17/422,461 priority patent/US11899321B2/en
Priority to EP24275035.4A priority patent/EP4375742A2/en
Priority to EP20922449.2A priority patent/EP4012491B1/en
Priority to CN202080000186.4A priority patent/CN113574448A/zh
Publication of WO2021168683A1 publication Critical patent/WO2021168683A1/zh

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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1339Gaskets; Spacers; Sealing of cells
    • G02F1/13394Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/136209Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/136286Wiring, e.g. gate line, drain line
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F2201/00Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50Protective arrangements

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a liquid crystal display panel and a liquid crystal display device.
  • liquid crystal display devices occupy a dominant position in the product market due to their small size, low power consumption, relatively low manufacturing cost, and no radiation. How to improve the display quality of the liquid crystal display device and bring a better viewing experience to users has always been the main research direction of those skilled in the art.
  • a liquid crystal display panel including a plurality of sub-pixels arranged in an array defined by a light-shielding matrix, the liquid crystal display panel including an array substrate and an opposite substrate arranged at intervals, wherein:
  • the counter substrate includes a first substrate and a plurality of spacers, and the plurality of spacers are located on a side of the first substrate close to the array substrate and located in a light-shielding area of the light-shielding matrix Inside;
  • the array substrate includes a second substrate and a plurality of raised structures, and the plurality of raised structures are located on a side of the second substrate close to the counter substrate and located on the side of the light shielding matrix. In the shading area;
  • the plurality of protruding structures includes a first protruding structure and a second protruding structure, and the orthographic projection of the first protruding structure and the second protruding structure on the second substrate is located on the spacer. Between the orthographic projection of the spacer on the second substrate and the adjacent sub-pixels, the orthographic projection of the first protrusion structure on the second substrate and the spacer on the The minimum pitch of the orthographic projection on the second substrate is smaller than the orthographic projection of the second protruding structure on the second substrate and the orthographic projection of the spacer on the second substrate Minimum spacing.
  • the orthographic projections of the spacer, the first protrusion structure, and the second protrusion structure on the second substrate are arranged in a first direction; the first protrusion The minimum distance between the orthographic projection of the structure on the second substrate and the orthographic projection of the spacer on the second substrate, and the second raised structure on the second substrate The minimum distance between the orthographic projection of the first protrusion structure and the orthographic projection of the first protruding structure on the second substrate is not less than the orthographic projection of the top surface of the spacer on the second substrate in parallel The largest dimension in the first direction.
  • the spacer has a frustum shape; the orthographic projection of the first protruding structure on the second substrate and the orthographic projection of the spacer on the second substrate.
  • the minimum distance between projections, and the minimum distance between the orthographic projection of the second raised structure on the second substrate and the orthographic projection of the first raised structure on the second substrate are different. It is less than one-half of the sum of the diameter of the top surface and the diameter of the bottom surface of the spacer.
  • the protrusion height of the second protrusion structure is greater than the protrusion height of the first protrusion structure.
  • the protruding structure is a bar-shaped protrusion extending along the second direction; or, the protruding structure includes at least two sub-protrusions arranged at intervals along the second direction; wherein, the second The direction is parallel to the second substrate and orthogonal to the first direction.
  • the largest dimension of the orthographic projection of the spacer on the second substrate parallel to the second direction is smaller than that of the protruding structure on the second substrate. The distance between the two distal ends of the orthographic projection.
  • the plurality of spacers includes a first spacer and a second spacer; the first protruding structure and the second protruding structure are on the second substrate
  • the orthographic projection is located between the orthographic projection of the first spacer on the second substrate and the adjacent sub-pixels; the plurality of raised structures further includes a third raised structure, and the first The orthographic projection of the three-protrusion structure on the second substrate is located between the orthographic projection of the second spacer on the second substrate and the adjacent sub-pixels, and the third The minimum distance between the orthographic projection of the raised structure on the second substrate and the orthographic projection of the second spacer on the second substrate is equal to that of the first raised structure on the second substrate. The minimum distance between the orthographic projection on the substrate and the orthographic projection of the first spacer on the second substrate.
  • the array substrate includes a first metal layer, a semiconductor layer, a second metal layer, a common electrode layer, and a pixel electrode layer on a side of the second substrate close to the counter substrate,
  • the first metal layer, the semiconductor layer, and the second metal layer are located in the light-shielding region of the light-shielding matrix;
  • the raised structure includes a plurality of pattern layers, and the pattern of the second raised structure
  • the number of layers is greater than the number of pattern layers of the first convex structure; the plurality of pattern layers include patterns of at least two layers among the first metal layer, the semiconductor layer, and the second metal layer Floor.
  • the plurality of pattern layers further include a pattern layer on the common electrode layer, and/or a pattern layer on the pixel electrode layer.
  • the first metal layer includes gate lines extending in a row direction
  • the second metal layer includes data lines extending in a column direction
  • the spacers are formed on the second substrate.
  • the orthographic projection falls within the orthographic projection of the grid line on the second substrate.
  • the first metal layer further includes a common electrode line extending in a row direction and connected to the common electrode layer, and the orthographic projection of at least one of the protruding structures on the second substrate falls into The common electrode line is in an orthographic projection on the second substrate.
  • the orthographic projection of the protruding structure on the second substrate is symmetrically distributed on both sides of the gate line.
  • the plurality of spacers are arranged in an array, and the spacers in the same row are all the first spacers or the second spacers.
  • the first spacers and the second spacers are alternately arranged.
  • the plurality of spacers includes a main spacer and an auxiliary spacer, the height of the main spacer is greater than the height of the auxiliary spacer, the first spacer and the The second spacers are all the auxiliary spacers.
  • a liquid crystal display device including a driving circuit and the liquid crystal display panel according to any one of the foregoing technical solutions.
  • FIG. 1a is a schematic diagram of a cross-sectional structure of a related art liquid crystal display panel
  • FIG. 1b is a schematic diagram of the displacement of the spacer when the liquid crystal display panel of the related art is subjected to a severe external force
  • FIG. 1c is a schematic diagram of bright spots on the screen of the related art liquid crystal display panel after the alignment layer is scratched;
  • FIG. 2a is a front view of a partial structure of a liquid crystal display panel according to an embodiment of the present disclosure
  • FIG. 2b is a schematic cross-sectional structure diagram of a liquid crystal display panel of an embodiment of the present disclosure at F-F in FIG. 2a;
  • FIG. 3a is an enlarged schematic diagram of the array substrate of the liquid crystal display panel of an embodiment of the present disclosure at A in FIG. 2a;
  • 3b is a schematic cross-sectional view of a liquid crystal display panel of an embodiment of the present disclosure at C-C of FIG. 3a;
  • FIG. 4a is an enlarged schematic diagram of the array substrate of the liquid crystal display panel of an embodiment of the present disclosure at B in FIG. 2a;
  • FIG. 4b is a schematic cross-sectional view of a liquid crystal display panel of an embodiment of the present disclosure at D-D of FIG. 4a;
  • FIG. 5a is a front view of a partial structure of a liquid crystal display panel according to another embodiment of the present disclosure.
  • FIG. 5b is a schematic cross-sectional structure diagram of a liquid crystal display panel at G-G in FIG. 5a according to another embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of a cross-sectional structure of a liquid crystal display device according to an embodiment of the present disclosure.
  • a specific component when it is described that a specific component is located between the first component and the second component, there may or may not be an intermediate component between the specific component and the first component or the second component.
  • the specific component When it is described that a specific component is connected to another component, the specific component may be directly connected to the other component without an intervening component, or may not be directly connected to the other component but with an intervening component.
  • the liquid crystal display device includes a liquid crystal display panel and a backlight module located on the light incident side of the liquid crystal display panel and providing backlight for the liquid crystal display panel.
  • the liquid crystal display panel includes a plurality of sub-pixels defined by a light-shielding matrix, and each sub-pixel corresponds to an opening area of the light-shielding matrix.
  • a plurality of adjacent sub-pixels with different colors constitute a pixel unit, such as green sub-pixels and red sub-pixels adjacent to each other in the row direction.
  • the pixel and the blue sub-pixel constitute a pixel unit. By mixing the sub-pixels of the same pixel unit according to a certain ratio, the pixel unit can display colors visible to the human eye.
  • the structure of the liquid crystal display panel 1' includes: an array substrate 11' and an opposite substrate 12' that are arranged at intervals and are aligned by a frame sealant 19' to form a liquid crystal cell, and are filled on the array substrate 11' and opposite To the liquid crystal 13' between the substrates 12'.
  • the array substrate 11' has an alignment layer 117a' on the surface close to the liquid crystal 13'
  • the counter substrate 12' has an alignment layer 117b' on the surface close to the liquid crystal 13'.
  • the alignment layers 117a', 117b' are used for The liquid crystal molecules are induced to be arranged at a predetermined tilt angle in the initial state.
  • the counter substrate 12' is provided with a plurality of spacers 121' on the side close to the array substrate 11'.
  • the spacers 121' are usually arranged in the light-shielding area of the light-shielding matrix 120', so as to avoid affecting the liquid crystal display panel 1'as much as possible.
  • the light-shielding area of the light-shielding matrix refers to the projection area of the light-shielding matrix in the direction perpendicular to the liquid crystal display panel.
  • the aperture ratio of the liquid crystal display panel can be understood as the ratio of the effective light-emitting area of the liquid crystal display panel to the total area of the liquid crystal display panel.
  • FIG. A parallel shift may occur between the ′′s, which may cause the spacer 121 ′ to shift and enter the opening area where the sub-pixel 10 ′ is located.
  • the spacer 121' When the spacer 121' enters the opening area, it will scratch the alignment layer 117a' (as shown at P) in this area, which will result in a bright spot 100' as shown in Fig. 1c on the display screen.
  • embodiments of the present disclosure provide a liquid crystal display panel and a liquid crystal display device.
  • the row direction refers to the horizontal arrangement direction of the array
  • the column direction refers to the longitudinal arrangement direction of the array. Horizontal and vertical.
  • the liquid crystal display panel 1 provided by an embodiment of the present disclosure includes a plurality of sub-pixels 10 arranged in an array defined by a light-shielding matrix 120.
  • the liquid crystal display panel 1 includes an array substrate 11 and an opposite substrate 12 arranged at intervals.
  • the opposite substrate 12 includes a first substrate 110 a and a plurality of spacers 121, and the plurality of spacers 121 are located on a side of the first substrate 110 a close to the array substrate 11 and located in the light-shielding area of the light-shielding matrix 120.
  • the array substrate 11 includes a second substrate 110 b and a plurality of raised structures 111, and the plurality of raised structures 111 are located on a side of the second substrate 110 b close to the counter substrate 12 and located in the light shielding area of the light shielding matrix 120.
  • the plurality of raised structures 111 include a first raised structure 111a and a second raised structure 111b.
  • the first raised structure 111a and the second raised structure 111b are on the second substrate 110b.
  • the orthographic projection on the second substrate 110b is located between the orthographic projection of the spacer 121 on the second substrate 110b and the adjacent sub-pixel 10, and the orthographic projection of the first protrusion structure 111a on the second substrate 110b and the spacer 121
  • the minimum distance S1 of the orthographic projection on the second substrate 110b (that is, the minimum distance between the contour lines of the two orthographic projection patterns) is smaller than the orthographic projection and spacing of the second convex structure 111b on the second substrate 110b.
  • the minimum distance S2 of the orthographic projection of the pad 121 on the second substrate 110b is smaller than the orthographic projection and spacing of the second convex structure 111b on the second substrate 110b.
  • the array substrate 11 and the counter substrate 12 of the liquid crystal display panel 1 are assembled with a frame sealant (not shown in the figure) to form a liquid crystal cell, and the liquid crystal 13 is filled therein.
  • the sub-pixel 10 is the smallest display unit of the liquid crystal display panel.
  • the structure of the array substrate 11 includes a second substrate 110b, which is located near the counter substrate 12 of the second substrate 110b.
  • the first metal layer 112 includes a gate line 112a extending in the row direction and a gate electrode 112b connected to the gate line 112a.
  • the semiconductor layer 113 includes an active layer 113a, and the orthographic projection of the active layer 113a on the second substrate 110b overlaps the orthographic projection of the gate 112b on the second substrate 110b.
  • the second metal layer 114 includes a data line 114a extending in the column direction, a source electrode 114b connected to the data line 114a, and a drain electrode 114c spaced apart from the source electrode 114b.
  • the source electrode 114b and the drain electrode 114c are formed on the second substrate 110b.
  • the orthographic projections overlap with the orthographic projections of the active layer 113a on the second substrate 110b.
  • the gate 112b, the active layer 113a, the source 114b, and the drain 114c constitute the basic structure of the thin film transistor 8.
  • the common electrode layer 115 includes a plurality of common electrode units 1150 arranged in an array and connected.
  • the common electrode units 1150 are planar, and each common electrode unit 1150 is of equal potential due to direct or indirect connection.
  • the pixel electrode layer 116 includes a plurality of pixel electrodes 160 having a slit structure arranged in an array, and the pixel electrodes 160 are connected to the drain 114c of the thin film transistor 8 through a via hole opened in the second insulating layer 118b.
  • the thin film transistor 8 as a switching device is turned on, the data signal is transmitted to the pixel electrode 160 through the data line 114a, so that an electric field is generated at the edge of the slit structure of the pixel electrode 160, and an electric field is also generated between the pixel electrode 160 and the common electrode 1150, thereby forming
  • the multi-dimensional electric field can drive most of the liquid crystal molecules of the sub-pixels to deflect.
  • the structure of the array substrate 11 is not limited to the above-mentioned specific embodiment.
  • the common electrode layer may also be directly formed on the substrate, and the first insulating layer, semiconductor layer, second metal layer, second insulating layer, etc. are arranged between the common electrode layer and the pixel electrode layer. between.
  • the common electrode layer may also be located on the side of the pixel electrode layer away from the substrate, the pixel electrode has a planar shape, and the common electrode unit has a slit structure.
  • the specific number of the pixel electrodes 160 that are insulated from the common electrode unit 1150 and generate an electric field is not limited.
  • it can be the orthographic projection of a pixel electrode on the substrate and fall into the orthographic projection of a common electrode unit on the substrate; it can be the orthographic projection of two pixel electrodes on the substrate and fall into a common electrode unit In the orthographic projection on the substrate; it can also be the orthographic projection of four pixel electrodes on the substrate, falling into the orthographic projection of a common electrode unit on the substrate, and so on.
  • the structure of the counter substrate 12 includes a first substrate 110a, which is located on a side of the first substrate 110a close to the array substrate 11 and along the distance away from the first substrate 110a.
  • a color resist layer, a light shielding matrix 120 and a transparent optical layer 122 are sequentially arranged in the direction of a substrate 110a.
  • the color resistance layer includes a plurality of color resistance units 1210 arranged in an array, and each color resistance unit 1210 is arranged corresponding to a sub-pixel.
  • the light shielding matrix 120 is used to shield the light leakage that may occur between the sub-pixels, and shield the light reflections that may be generated by metal lines such as the gate line 112a and the data line 114a (only part of the boundary of the light shielding matrix 120 is shown in FIG. 3a and FIG. 4a).
  • the light shielding matrix 120 is disposed on the opposite substrate 12. In some other embodiments of the present disclosure, the light shielding matrix may also be provided on the array substrate 11.
  • the array substrate 11 and the counter substrate 12 respectively have alignment layers 117a and 117b on the side surfaces close to the liquid crystal 13, which are used to induce the liquid crystal molecules to be arranged at a predetermined tilt angle in the initial state.
  • the function of the spacer 121 is to support the array substrate 11 so as to maintain the cell thickness uniformity of the liquid crystal display panel to support the normal display of the liquid crystal display panel.
  • the density of the spacers 121 is not limited.
  • the number ratio of the spacers 121 to the sub-pixels 10 can be designed to be 1/1, 1/2, 1/3, or 1/4, and so on.
  • the spacer 121 is made of an organic material with elasticity, such as transparent optical glue, optically transparent resin or polyacrylate glue, etc.
  • the spacer 121 is formed on the counter substrate 12 through a patterning process, and is arranged on the light shielding matrix 120 In the shaded area.
  • the specific shape of the spacer 121 is not limited, for example, a cylindrical shape, a prismatic shape, or a truncated cone shape.
  • the plurality of spacers 121 disposed on the counter substrate 12 includes a main spacer 121a and an auxiliary spacer 121b, and the main spacer 121a
  • the height of is greater than the height of the auxiliary spacer 121b.
  • the higher main spacer 121a plays a major supporting role.
  • the cell thickness of the liquid crystal display panel is reduced, and the main spacer 121a is compressed.
  • the lower auxiliary spacer 121b plays a supplementary supporting role, thereby continuing to maintain The cell thickness uniformity of the liquid crystal display panel.
  • the auxiliary spacers account for about 98% of the total number of spacers
  • the aforementioned protruding structure is arranged between the auxiliary spacers and the adjacent sub-pixels, and the main spacers and The aforementioned protruding structure is not provided between adjacent sub-pixels.
  • the above-mentioned protruding structure 111 may also be provided between the main spacer 121a and the adjacent sub-pixel 10.
  • the first raised structures 111a and the second raised structures 111b are provided between some spacers 121 and the adjacent sub-pixels 10. As shown in FIGS.
  • the minimum distance S1 between the orthographic projection of the first protrusion structure 111a on the second substrate 110b and the orthographic projection of the spacer 121 on the second substrate 110b is smaller than that of the second protrusion
  • the orthographic projection of the spacer 121, the first raised structure 111a, and the second raised structure 111b on the second substrate 110b is along the first direction (For example, along the column direction); the minimum distance S1 between the orthographic projection of the first protrusion structure 111a on the second substrate 110b and the orthographic projection of the spacer 121 on the second substrate 110b, and the second protrusion
  • the minimum distance S3 between the orthographic projection of the structure 111b on the second substrate 110b and the orthographic projection of the first protruding structure 111a on the second substrate 110b is not less than the top surface of the spacer 121 on the second substrate 110b
  • the orthographic projection on is parallel to the largest dimension d in the first direction.
  • the spacing can accommodate the top surface of the spacer 121.
  • the top surface of the spacer 121 refers to the side surface of the spacer 121 close to the array substrate 11, and the bottom surface of the spacer 121 refers to the side surface of the spacer 121 away from the array substrate 11.
  • the protruding structure 111 can not only block the displacement of the spacer 121 but also serve as a buffer, so that the spacer 121 can more effectively prevent the spacer 121 from invading the opening area where the sub-pixel is located.
  • the spacer 121 has a frustum shape, and the orthographic projection of the first protruding structure 111a on the second substrate 110b is the same as the orthographic projection of the spacer 121 on the second substrate 110b.
  • the minimum distance S1 and the minimum distance S3 between the orthographic projection of the second protrusion structure 111b on the second substrate 110b and the orthographic projection of the first protrusion structure 111a on the second substrate 110b are not less than the spacer 121 is one-half of the sum of the diameter d of the top surface and the diameter D of the bottom surface.
  • the protrusion height of the second protrusion structure 111b is greater than the protrusion height of the first protrusion structure 111a. In this way, it is more difficult for the septum to invade the opening area, and the possibility of the septum to invade the opening area is further reduced.
  • the plurality of spacers 121 includes a first spacer 1211 and a second spacer 1212.
  • the orthographic projection of the first protruding structure 111a and the second protruding structure 111b on the second substrate 110b is located on the first spacer 1211 on the second substrate 110b Between the orthographic projection and the adjacent sub-pixel 10. Please refer to FIG. 2a, FIG. 4a and FIG.
  • the plurality of raised structures 111 also include a third raised structure 111c
  • the orthographic projection of the third raised structure 111c on the second substrate 110b is located on the second spacer 1212 is between the orthographic projection of the second substrate 110b and the adjacent sub-pixel 10
  • the orthographic projection of the third raised structure 111c on the second substrate 110b is the same as the second spacer 1212 on the second substrate.
  • the minimum distance S4 of the orthographic projection on 110b is approximately equal to the minimum distance S1 of the orthographic projection of the first protruding structure 111a on the second substrate 110b and the orthographic projection of the first spacer 1211 on the second substrate 110b.
  • the minimum distance S4 is not less than the maximum dimension d of the orthographic projection of the top surface of the spacer 121 on the second substrate 110b parallel to the first direction.
  • two protruding structures are provided between the first spacer 1211 and the adjacent sub-pixel 10, and one protruding structure is provided between the second spacer 1212 and the adjacent sub-pixel 10 .
  • the design of this embodiment also takes into account the aperture ratio of the liquid crystal display panel.
  • the specific shape of the aforementioned protrusion structure 111 is not limited, for example, it may be a strip-shaped protrusion extending in the second direction (such as the second protrusion structure 111b in FIG. 3a), or the protrusion structure 111 includes at least two sub-protrusions arranged at intervals along the second direction (such as the first protruding structure 111a in FIG. 3a), wherein the second direction is parallel to the second substrate 110b and orthogonal to the first direction, for example, the first The two directions are row directions.
  • the specific shape of the sub-protrusions is not limited.
  • the sub-protrusions may be columnar, or may also have a bar shape extending in the second direction.
  • the largest dimension of the orthographic projection of the spacer 121 on the second substrate 110b parallel to the second direction is smaller than two distances of the orthographic projection of the protrusion structure 111 on the second substrate 110b. The distance between the ends.
  • the orthographic projection of the spacer 121 on the second substrate 110b may be approximately located on the mid-vertical line of the second protrusion structure 111b extending in the second direction.
  • the aforementioned first metal layer 112, semiconductor layer 113, and second metal layer 114 are located in the light-shielding area of the light-shielding matrix 120 so as to be shielded by the light-shielding matrix 120.
  • the convex structure 111 includes a plurality of pattern layers, and the plurality of pattern layers includes at least two pattern layers among the first metal layer 112, the semiconductor layer 113 and the second metal layer 114.
  • the pattern layer of the protrusion structure 111 refers to a structure layer that contributes to the protrusion height of the protrusion structure 111. Adjacent pattern layers may be stacked, or may be separated by other layers, such as an insulating layer covering the entire substrate.
  • the raised structure may include a pattern layer on the first metal layer and a pattern layer on the semiconductor layer.
  • the raised structure 111 may include a pattern layer located on the first metal layer 112 and a pattern layer located on the second metal layer 114.
  • the raised structure 111 may include a pattern layer on the semiconductor layer 113 and a pattern layer on the second metal layer 114.
  • the raised structure 111 includes a pattern layer on the first metal layer 112, a pattern layer on the semiconductor layer 113, and a pattern layer on the second metal layer 114.
  • the protrusion structure 111 may further include a pattern layer located on the common electrode layer 115 or the pixel electrode layer 116. Since the thickness of the common electrode layer 115 and the pixel electrode layer 116 is much smaller than the thickness of the first metal layer 112, the semiconductor layer 113, and the second metal layer 114, the contribution to the protrusion height is negligible.
  • the array substrate 11 is being manufactured For the common electrode layer and the pixel electrode layer, conventional patterning processes can be used.
  • the pattern layer on the array substrate is generally formed by dry etching or wet etching, and a certain angle is formed between the etched section and the base surface.
  • a certain angle is formed between the etched section and the base surface.
  • the orthographic projection of the pattern layer further away from the second substrate 110b on the substrate falls closer to the substrate.
  • the multiple pattern layers are stepped after the production is completed.
  • one of the pattern layers of the raised structure 111 and the gate line 112a are located on the same first metal layer 112, and therefore can be formed in the same patterning process; one of the pattern layers of the raised structure 111 is the active layer 113a is located on the semiconductor layer 113 and can be formed in the same patterning process; one of the pattern layers of the raised structure 111 and the data line 114a are located on the second metal layer 114 at the same time, so it can be formed in the same patterning process.
  • the pattern layer of the raised structure 111 may also be a part of the common electrode layer 115 or the pixel electrode layer 116. The design of this embodiment is beneficial to simplify the manufacturing process and reduce the manufacturing cost.
  • the first insulating layer 118a, the second insulating layer 118b, and the third insulating layer 118c cover some or all of the pattern layers of the raised structure 111, there is no increase in the height of the raised structure 111. contribute.
  • each pattern layer of the raised structure can be flexibly designed.
  • the protrusion height of the second protrusion structure 111b is greater than the protrusion height of the first protrusion structure 111a.
  • the pattern layer of the second protrusion structure 111b can be The number of is greater than the number of pattern layers of the first convex structure 111a.
  • the first protrusion structure 111a includes two pattern layers, which are respectively located on the semiconductor layer 113 and the second metal layer 114, or respectively located on the first metal layer. 112 and the second metal layer 114; the second raised structure 111b includes three pattern layers, which are located on the first metal layer 112, the semiconductor layer 113, and the second metal layer 114, respectively.
  • the orthographic projection of the spacer 121 on the second substrate 110b falls into the gate line 112a on the second substrate 110b.
  • the orthographic projection of there is a distance between the orthographic projection of each raised structure 111 on the second substrate 110b and the orthographic projection of the gate line 112a on the second substrate 110b. Disposing the spacer 121 directly above the gate line 112a can effectively utilize the light shielding area where the gate line 112a is located, so as to avoid affecting the aperture ratio of the liquid crystal display panel as much as possible.
  • the orthographic projection of the raised structure 111 on the second substrate 110b is symmetrically distributed on both sides of the orthographic projection of the gate line 112a on the second substrate 110b, that is, the raised structure 111 is on the
  • the two sides of the gate line 112a are symmetrically distributed, which can effectively block and buffer the displacement of the spacer 121 to both sides of the gate line 112a.
  • the spacer 121 and the protruding structure 111 may be disposed at the intersection of the gate line 112a and the data line 114a, close to one corner of the substantially rectangular sub-pixel 10, so as to minimize the impact on the area of the opening area.
  • the first metal layer 112 further includes a common electrode line 112c extending in the row direction and connected to the common electrode layer 115 through via holes.
  • the common electrode line 112c is arranged between two adjacent rows of sub-pixels and on one side of the gate line 112a, and connects the common electrodes 1150 arranged in the row direction through via holes.
  • the orthographic projection of some first raised structures 111a and some third raised structures 111c on the second substrate 110b falls within the orthographic projection of the common electrode line 112c on the substrate 110c, that is, the common electrode A part of the line 112c serves as one of the pattern layers of these raised structures at the same time.
  • a series of adjacent common electrode units 1150 of the common electrode layer 115 may be connected by vias and jumpers 114d.
  • the jumper 114d may be located in the second metal layer 114 and formed in the same patterning process as the data line 114a.
  • Each common electrode 1150 of the common electrode layer 115 is connected through the common electrode line 112c and the jumper 114d, and the common voltage signal can be more evenly transmitted to the common electrode layer 115 through the common electrode line 112c and the jumper 114d, which is beneficial to reduce the common electrode layer.
  • 115 in-plane pressure drop By adopting the design of this embodiment, the common electrode line 112c is fabricated and one of the pattern layers of some convex structures is formed at the same time, which simplifies the fabrication process of the array substrate, thereby further reducing the fabrication cost.
  • the orthographic projections of a plurality of spacers 121 on the second substrate 110b are arranged in an array, and the spacers 121 in the same column are all the aforementioned first
  • the spacers 1211 may be the aforementioned second spacers 1212.
  • the first spacers 1211 and the second spacers 1212 are alternately arranged.
  • a third protruding structure is provided between the sub-pixels of odd-numbered columns and the adjacent spacers, and a first protruding structure and a second protruding structure are provided between the sub-pixels of even-numbered columns and the adjacent spacers. Protruding structure.
  • a third protruding structure is provided between the 1, 5, 9, 13... columns of sub-pixels and the adjacent spacers, and the 3rd, 7th, 11th, 15th...
  • a first convex structure and a second convex structure are arranged between adjacent spacers. Since the arrangement density and arrangement manner of the spacer 121 can have various designs, more arrangements of the protrusion structure will not be listed here.
  • the design of this embodiment takes into account both the aperture ratio of the liquid crystal display panel and the blocking effect on the displacement of the spacers.
  • the arrangement of the protruding structures presents regularity, making the manufacturing process easier to control.
  • an embodiment of the present disclosure also provides a liquid crystal display device, which includes a driving circuit and the liquid crystal display panel 1 of any of the foregoing embodiments, and the driving circuit is omitted from the figure. Since the image bright spot defect of the liquid crystal display panel 1 is improved, the display quality of the liquid crystal display device is better.
  • the product type of the liquid crystal display device is not limited, for example, it can be a display, a tablet computer, a television, a mobile phone, or an electronic paper, etc.
  • the liquid crystal display device further includes a backlight module 2, and the backlight module 2 is located on the side of the array substrate 11 away from the counter substrate 12.
  • the specific type of the backlight module 2 is not limited. For example, it may be a direct type backlight module or an edge type backlight module.
  • the backlight module 2 is a direct type backlight module, and a plurality of LED light sources 24 are uniformly distributed on the surface of the reflective sheet 21.
  • the reflective sheet 21 and the diffuser plate 22 of the direct-lit backlight module are generally maintained at a certain interval by a plurality of supporting pillars 23.
  • the supporting column will press the liquid crystal display panel, which is more likely to cause the displacement and deformation of the spacer, thereby causing defective bright spots.
  • the first raised structure and the second raised structure provided between the spacer and the adjacent sub-pixels can play a multi-level blocking effect on the spacer, thereby effectively reducing or even avoiding Poor bright spots caused by the spacers invading the opening area to scratch the alignment layer, and the product quality is better.

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Abstract

一种液晶显示面板(1)及液晶显示装置。液晶显示面板(1)包括由遮光矩阵(120)界定的多个子像素(10)且包括间隔的阵列基板(11)和对向基板(12),对向基板(12)包括第一衬底(110a)和多个隔垫物(121),隔垫物(121)位于第一衬底(110a)靠近阵列基板(11)的一侧且位于遮光矩阵(120)的遮光区域内;阵列基板(11)包括第二衬底(110b)和多个凸起结构(111),凸起结构(111)位于第二衬底(110b)靠近对向基板(12)的一侧且位于遮光矩阵(120)的遮光区域内;多个凸起结构(111)包括第一凸起结构(111a)和第二凸起结构(111b),第一凸起结构(111a)和第二凸起结构(111b)在第二衬底(110b)上的正投影位于隔垫物(121)在第二衬底(110b)上的正投影与相邻子像素(10)之间,第一凸起结构(111a)在第二衬底(110b)上正投影与隔垫物(121)在第二衬底(110b)上正投影的最小间距,小于第二凸起结构(111b)在第二衬底(110b)上正投影与隔垫物(121)在第二衬底(110b)上正投影的最小间距。

Description

液晶显示面板及液晶显示装置 技术领域
本公开涉及显示技术领域,特别涉及一种液晶显示面板及液晶显示装置。
背景技术
在平板显示装置中,液晶显示装置由于具有体积小、功耗低、制造成本相对较低和无辐射等特点,在产品市场占据了主导地位。如何提升液晶显示装置的显示品质,为用户带来更佳的观看体验,一直是本领域技术人员的主要研究方向。
发明内容
根据本公开实施例的一方面,提供一种液晶显示面板,包括由遮光矩阵界定的呈阵列排布的多个子像素,所述液晶显示面板包括间隔设置的阵列基板和对向基板,其中:
所述对向基板包括第一衬底和多个隔垫物,所述多个隔垫物位于所述第一衬底的靠近所述阵列基板的一侧,且位于所述遮光矩阵的遮光区域内;
所述阵列基板包括第二衬底和多个凸起结构,所述多个凸起结构位于所述第二衬底的靠近所述对向基板的一侧,且位于所述遮光矩阵的所述遮光区域内;
所述多个凸起结构包括第一凸起结构和第二凸起结构,所述第一凸起结构和所述第二凸起结构在所述第二衬底上的正投影位于所述隔垫物在所述第二衬底上的正投影与相邻的所述子像素之间,所述第一凸起结构在所述第二衬底上的正投影与所述隔垫物在所述第二衬底上的正投影的最小间距,小于所述第二凸起结构在所述第二衬底上的正投影与所述隔垫物在所述第二衬底上的正投影的最小间距。
在一些实施例中,所述隔垫物、所述第一凸起结构和所述第二凸起结构在所述第二衬底上的正投影沿第一方向排列;所述第一凸起结构在所述第二衬底上的正投影与所述隔垫物在所述第二衬底上的正投影的最小间距,以及,所述第二凸起结构在所述第二衬底上的正投影与所述第一凸起结构在所述第二衬底上的正投影的最小间距,均不小于所述隔垫物的顶面在所述第二衬底上的正投影在平行于所述第一方向上的最大尺寸。
在一些实施例中,所述隔垫物呈锥台状;所述第一凸起结构在所述第二衬底上的 正投影与所述隔垫物在所述第二衬底上的正投影的最小间距,以及,所述第二凸起结构在所述第二衬底上的正投影与所述第一凸起结构在所述第二衬底上的正投影的最小间距,均不小于所述隔垫物的顶面直径和底面直径之和的二分之一。
在一些实施例中,所述第二凸起结构的凸出高度大于所述第一凸起结构的凸出高度。
在一些实施例中,所述凸起结构为沿第二方向延伸的条形凸起;或者,所述凸起结构包括沿第二方向间隔排列的至少两个子凸起;其中,所述第二方向平行于所述第二衬底且与所述第一方向正交。
在一些实施例中,所述隔垫物在所述第二衬底上的正投影在平行于所述第二方向上的最大尺寸,小于所述凸起结构在所述第二衬底上的正投影的两个远端之间的距离。
在一些实施例中,所述多个隔垫物包括第一隔垫物和第二隔垫物;所述第一凸起结构和所述第二凸起结构在所述第二衬底上的正投影位于所述第一隔垫物在所述第二衬底上的正投影与相邻的所述子像素之间;所述多个凸起结构还包括第三凸起结构,所述第三凸起结构在所述第二衬底上的正投影位于所述第二隔垫物在所述第二衬底上的正投影与相邻的所述子像素之间,且所述第三凸起结构在所述第二衬底上的正投影与所述第二隔垫物在所述第二衬底上的正投影的最小间距,等于所述第一凸起结构在所述第二衬底上的正投影与所述第一隔垫物在所述第二衬底上的正投影的最小间距。
在一些实施例中,所述阵列基板包括位于所述第二衬底的靠近所述对向基板的一侧的第一金属层、半导体层、第二金属层,公共电极层和像素电极层,所述第一金属层、所述半导体层和所述第二金属层位于所述遮光矩阵的所述遮光区域内;所述凸起结构包括多个图案层,所述第二凸起结构的图案层的数量大于所述第一凸起结构的图案层的数量;所述多个图案层包括位于所述第一金属层、所述半导体层和所述第二金属层中的至少两层的图案层。
在一些实施例中,所述多个图案层还包括位于所述公共电极层的图案层,和/或,位于所述像素电极层的图案层。
在一些实施例中,所述第一金属层包括沿行向延伸的栅线,所述第二金属层包括沿列向延伸的数据线,所述隔垫物在所述第二衬底上的正投影落入所述栅线在所述第二衬底上的正投影内。
在一些实施例中,所述第一金属层还包括沿行向延伸且连接所述公共电极层的公 共电极线,至少一个所述凸起结构在所述第二衬底上的正投影落入所述公共电极线在所述第二衬底上的正投影内。
在一些实施例中,所述凸起结构在所述第二衬底上的正投影在所述栅线的两侧呈对称分布。
在一些实施例中,所述多个隔垫物呈阵列排布,且位于同一列的所述隔垫物均为所述第一隔垫物或均为所述第二隔垫物。
在一些实施例中,沿行向方向,所述第一隔垫物和所述第二隔垫物交替排列。
在一些实施例中,所述多个隔垫物包括主隔垫物和辅隔垫物,所述主隔垫物的高度大于所述辅隔垫物的高度,所述第一隔垫物和所述第二隔垫物均为所述辅隔垫物。
根据本公开实施例的另一方面,提供一种液晶显示装置,包括驱动电路和根据前述任一技术方案所述的液晶显示面板。
附图说明
构成说明书的一部分的附图描述了本公开的实施例,并且连同说明书一起用于解释本公开的原理。
参照附图,根据下面的详细描述,可以更加清楚地理解本公开,其中:
图1a是一种相关技术的液晶显示面板的截面结构示意图;
图1b是相关技术的液晶显示面板在受到剧烈外力时隔垫物发生移位示意图;
图1c是相关技术的液晶显示面板在配向层被划伤后画面产生亮斑示意图;
图2a是本公开一实施例的液晶显示面板的局部结构主视图;
图2b是本公开一实施例的液晶显示面板在图2a的F-F处的截面结构示意图;
图3a是本公开一实施例的液晶显示面板的阵列基板在图2a的A处放大示意图;
图3b是本公开一实施例的液晶显示面板在图3a的C-C处的截面示意图;
图4a是本公开一实施例的液晶显示面板的阵列基板在图2a的B处放大示意图;
图4b是本公开一实施例的液晶显示面板在图4a的D-D处的截面示意图;
图5a是本公开另一实施例的液晶显示面板的局部结构主视图;
图5b是本公开另一实施例的液晶显示面板在图5a的G-G处的截面结构示意图;
图6是本公开一实施例的液晶显示装置的截面结构示意图。
应当明白,附图中所示出的各个部分的尺寸并不必然是按照实际的比例关系绘制的。此外,相同或类似的参考标号表示相同或类似的构件。
具体实施方式
现在将参照附图来详细描述本公开的各种示例性实施例。对示例性实施例的描述仅仅是说明性的,决不作为对本公开及其应用或使用的任何限制。本公开可以以许多不同的形式实现,不限于这里所述的实施例。提供这些实施例是为了使本公开透彻且完整,并且向本领域技术人员充分表达本公开的范围。应注意到:除非另外具体说明,否则在这些实施例中阐述的部件和步骤的相对布置、材料的组分、数字表达式和数值应被解释为仅仅是示例性的,而不是作为限制。
本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性,而只是用来区分不同的部分。“包括”或者“包含”等类似的词语意指在该词前的要素涵盖在该词后列举的要素,并不排除也涵盖其他要素的可能。“上”、“下”等仅用于表示相对位置关系,当被描述对象的绝对位置改变后,则该相对位置关系也可能相应地改变。
在本公开中,当描述到特定部件位于第一部件和第二部件之间时,在该特定部件与第一部件或第二部件之间可以存在居间部件,也可以不存在居间部件。当描述到特定部件连接其它部件时,该特定部件可以与所述其它部件直接连接而不具有居间部件,也可以不与所述其它部件直接连接而具有居间部件。
本公开使用的所有术语(包括技术术语或者科学术语)与本公开所属领域的普通技术人员理解的含义相同,除非另外特别定义。还应当理解,在诸如通用字典中定义的术语应当被解释为具有与它们在相关技术的上下文中的含义相一致的含义,而不应用理想化或极度形式化的意义来解释,除非这里明确地这样定义。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论,但在适当情况下,所述技术、方法和设备应当被视为说明书的一部分。
液晶显示装置包括液晶显示面板,以及位于液晶显示面板的入光侧并为液晶显示面板提供背光的背光模组。液晶显示面板包括由遮光矩阵界定的多个子像素,每个子像素对应遮光矩阵的一个开口区,相邻且颜色不同的多个子像素构成一个像素单元,例如行向上相邻的绿色子像素、红色子像素和蓝色子像素构成一个像素单元。将同一个像素单元的子像素按照一定比例混光,便可以使像素单元显示出人眼可见的彩色。
如图1a所示,液晶显示面板1’的结构包括:间隔设置并通过封框胶19’对盒 形成液晶盒的阵列基板11’和对向基板12’,以及填充于阵列基板11’和对向基板12’之间的液晶13’。其中,阵列基板11’在靠近液晶13’的一侧表面具有配向层117a’,对向基板12’在靠近液晶13’的一侧表面具有配向层117b’,配向层117a’、117b’用于诱导液晶分子在初始状态按照预定的倾角排布。对向基板12’在靠近阵列基板11’的一侧设置有多个隔垫物121’,隔垫物121’通常设置在遮光矩阵120’遮光区域内,从而尽量避免影响到液晶显示面板1’的开口率。遮光矩阵的遮光区域是指遮光矩阵在垂直于液晶显示面板方向上的投影区域。液晶显示面板的开口率可以理解为液晶显示面板的有效发光面积占液晶显示面板总面积的比例。
本公开的发明人在实现本公开实施例的过程中发现,如图1b所示,上述液晶显示面板1’在受到较为剧烈的外力时,例如发生跌落时,阵列基板11’和对向基板12’之间可能产生平行移位,从而可能导致隔垫物121’移位并进入子像素10’所在的开口区。隔垫物121’进入开口区会划伤该区域的配向层117a’(如P处所示),从而导致显示画面产生如图1c所示的亮斑100’。
为解决上述技术问题,本公开实施例提供了一种液晶显示面板及液晶显示装置。
在本公开实施例中,行向指阵列的横向排列方向,列向指阵列的纵向排列方向,行向和列向是相对液晶显示装置的其中一种使用状态而言的,不应理解为绝对的横向和纵向。
如图2a和图2b所示,本公开一实施例提供的液晶显示面板1,包括由遮光矩阵120界定的呈阵列排布的多个子像素10。该液晶显示面板1包括间隔设置的阵列基板11和对向基板12。对向基板12包括第一衬底110a和多个隔垫物121,多个隔垫物121位于第一衬底110a的靠近阵列基板11的一侧,且位于遮光矩阵120的遮光区域内。阵列基板11包括第二衬底110b和多个凸起结构111,多个凸起结构111位于第二衬底110b的靠近对向基板12的一侧,且位于遮光矩阵120的遮光区域内。
请结合图3a和图3b所示,多个凸起结构111包括第一凸起结构111a和第二凸起结构111b,第一凸起结构111a和第二凸起结构111b在第二衬底110b上的正投影位于隔垫物121在第二衬底110b上的正投影与相邻的子像素10之间,第一凸起结构111a在第二衬底110b上的正投影与隔垫物121在第二衬底110b上的正投影的最小间距S1(即两个正投影图形的轮廓线之间的最小间距),小于第二凸起结构111b在第二衬底110b上的正投影与隔垫物121在第二衬底110b上的正投影的最小间距S2。
如图2b所示,液晶显示面板1的阵列基板11和对向基板12通过封框胶(图中未示出)对盒形成液晶盒,液晶13填充于其中。子像素10是液晶显示面板的最小显示单元。如图3a和图3b、图4a和图4b所示,在本公开的一个实施例中,阵列基板11的结构包括:第二衬底110b,位于第二衬底110b的靠近对向基板12的一侧且沿远离第二衬底110b的方向依次设置的第一金属层112、第一绝缘层118a、半导体层113、第二金属层114、第二绝缘层118b、公共电极层115、第三绝缘层118c和像素电极层116。第一金属层112包括沿行向延伸的栅线112a和连接栅线112a的栅极112b。半导体层113包括有源层113a,有源层113a在第二衬底110b上的正投影与栅极112b在第二衬底110b上的正投影相交叠。第二金属层114包括沿列向延伸的数据线114a、连接数据线114a的源极114b以及与源极114b相间隔的漏极114c,源极114b和漏极114c在第二衬底110b上的正投影均与有源层113a在第二衬底110b上的正投影相交叠。栅极112b、有源层113a、源极114b和漏极114c构成了薄膜晶体管8的基本结构。公共电极层115包括多个呈阵列排布且相连接的公共电极单元1150,公共电极单元1150呈面状,且各个公共电极单元1150由于直接或间接连接而等电势。像素电极层116包括呈阵列排布的多个具有狭缝结构的像素电极160,像素电极160通过第二绝缘层118b上开设的过孔与薄膜晶体管8的漏极114c连接。当作为开关器件的薄膜晶体管8打开时,数据信号通过数据线114a传输给像素电极160,使得像素电极160的狭缝结构边缘产生电场,像素电极160与公共电极1150之间也产生电场,从而形成多维电场,可以驱动子像素的大部分液晶分子产生偏转。
值得一提的是,阵列基板11的结构不限于上述具体实施例。在本公开的另一些实施例中,公共电极层也可以直接形成在衬底上,第一绝缘层、半导体层、第二金属层、第二绝缘层等设置在公共电极层与像素电极层之间。此外,公共电极层也可以位于像素电极层远离衬底的一侧,像素电极呈面状,公共电极单元具有狭缝结构。
与公共电极单元1150绝缘间隔并产生电场的像素电极160的具体数量不限。例如:可以是一个像素电极在衬底上的正投影,落入一个公共电极单元在衬底上的正投影内;可以是两个像素电极在衬底上的正投影,落入一个公共电极单元在衬底上的正投影内;还可以是四个像素电极在衬底上的正投影,落入一个公共电极单元在衬底上的正投影内,等等。
如图3b和图4b所示,在本公开的一些实施例中,对向基板12的结构包括:第一衬底110a,位于第一衬底110a的靠近阵列基板11的一侧且沿远离第一衬底110a 的方向依次设置的色阻层、遮光矩阵120和透明光学层122。色阻层包括呈阵列排布的多个色阻单元1210,每个色阻单元1210与一个子像素对应设置。遮光矩阵120用于遮挡子像素之间可能产生的漏光,以及遮挡栅线112a、数据线114a等金属线可能产生的反光(在图3a和图4a中仅示意了遮光矩阵120的部分边界)。该实施例中,遮光矩阵120设置在对向基板12上。在本公开的一些其它实施例中,遮光矩阵也可以设置在阵列基板11上。
如图2b所示,阵列基板11和对向基板12在靠近液晶13的一侧表面分别具有配向层117a、117b,用于诱导液晶分子在初始状态按照预定倾角排布。隔垫物121的作用是支撑阵列基板11,从而维持液晶显示面板的盒厚均一性,以支持液晶显示面板的正常显示。隔垫物121的密度大小不限,例如,隔垫物121与子像素10的数量比可以设计为1/1,1/2,1/3或者1/4等等。隔垫物121采用具有弹性的有机材料,例如可以采用透明光学胶、光学透明树脂或聚丙烯酸酯类胶等,隔垫物121通过构图工艺形成在对向基板12上,并且设置在遮光矩阵120所在的遮光区域内。隔垫物121的具体形状不限,例如呈圆柱状、棱柱状或锥台状等。
在本公开的一些实施例中,如图5a和图5b所示,设置在对向基板12上的多个隔垫物121包括主隔垫物121a和辅隔垫物121b,主隔垫物121a的高度大于辅隔垫物121b的高度。液晶显示面板在正常使用情况下,较高的主隔垫物121a起主要支撑作用。当液晶显示面板受外力压迫或者处于较低温度时,液晶显示面板的盒厚减小,主隔垫物121a被压缩,此时较低的辅隔垫物121b起到补充支撑作用,从而继续维持液晶显示面板的盒厚均一性。在本公开的一些实施方式中,辅隔垫物约占隔垫物总数量的98%,前述的凸起结构设置在了辅隔垫物与相邻的子像素之间,主隔垫物与相邻的子像素之间未设置前述的凸起结构。在本公开的另一些实施方式中,如图5a所示,主隔垫物121a与相邻的子像素10之间也可以设置上述凸起结构111。
相关技术中,液晶显示面板在受到较为剧烈的外力时,隔垫物进入子像素所在的开口区会划伤该区域的配向层,从而导致显示画面产生亮斑不良。而在本公开上述实施例的技术方案中,在一些隔垫物121与相邻的子像素10之间设置了第一凸起结构111a和第二凸起结构111b。如图3a和图3b所示,第一凸起结构111a在第二衬底110b上的正投影与隔垫物121在第二衬底110b上的正投影的最小间距S1,小于第二凸起结构111b在第二衬底110b上的正投影与隔垫物121在第二衬底110b上的正投影的最小间距S2。即,第一凸起结构111a和第二凸起结构111b沿靠近子像素10的方向 依次排列,也就是设置在了隔垫物121侵入开口区的路径上,这样,可以有效减少甚至避免因隔垫物121侵入开口区、进而划伤配向层而导致的亮斑不良。
在本公开的一些实施例中,如图3a和图3b所示,隔垫物121、第一凸起结构111a和第二凸起结构111b在第二衬底110b上的正投影沿第一方向(例如沿列向)排列;第一凸起结构111a在第二衬底110b上的正投影与隔垫物121在第二衬底110b上的正投影的最小间距S1,以及,第二凸起结构111b在第二衬底110b上的正投影与第一凸起结构111a在第二衬底110b上的正投影的最小间距S3,均不小于隔垫物121的顶面在第二衬底110b上的正投影在平行于第一方向上的最大尺寸d。即:当隔垫物121沿第一方向发生移位时,隔垫物121与第一凸起结构111a之间的设置间距,以及第一凸起结构111a和第二凸起结构111b之间的设置间距能够容纳隔垫物121的顶面。
其中,隔垫物121的顶面是指隔垫物121靠近阵列基板11的一侧表面,隔垫物121的底面是指隔垫物121远离阵列基板11的一侧表面。这样,凸起结构111对隔垫物121的移位不但能起到阻挡作用还能起到缓冲作用,因此能更有效的防止隔垫物121侵入子像素所在的开口区。在本公开的一些实施例中,隔垫物121呈锥台状,第一凸起结构111a在第二衬底110b上的正投影与隔垫物121在第二衬底110b上的正投影的最小间距S1,以及,第二凸起结构111b在第二衬底110b上的正投影与第一凸起结构111a在第二衬底110b上的正投影的最小间距S3,均不小于隔垫物121的顶面直径d和底面直径D之和的二分之一。
如图3b所示,在本公开的一些实施例中,第二凸起结构111b的凸出高度大于第一凸起结构111a的凸出高度。这样,更增加了隔垫物侵入开口区的难度,进一步减小了隔垫物侵入开口区的可能。
如图2a所示,在本公开的一些实施例中,多个隔垫物121包括第一隔垫物1211和第二隔垫物1212。请结合图2a、图3a和图3b所示,第一凸起结构111a和第二凸起结构111b在第二衬底110b上的正投影位于第一隔垫物1211在第二衬底110b上的正投影与相邻的子像素10之间。请结合图2a、图4a和图4b所示,多个凸起结构111还包括第三凸起结构111c,第三凸起结构111c在第二衬底110b上的正投影位于第二隔垫物1212在第二衬底110b上的正投影与相邻的子像素10之间,且第三凸起结构111c在第二衬底110b上的正投影与第二隔垫物1212在第二衬底110b上的正投影的最小间距S4,大致等于第一凸起结构111a在第二衬底110b上的正投影与第一隔垫物1211在第二衬底110b上的正投影的最小间距S1。该最小间距S4也不小于隔垫物121 的顶面在第二衬底110b上的正投影在平行于第一方向上的最大尺寸d。在该实施例中,第一隔垫物1211与相邻的子像素10之间设置有两个凸起结构,第二隔垫物1212与相邻的子像素10之间设置有一个凸起结构。在对隔垫物移位起到有效阻挡效果的前提下,该实施例设计还兼顾了液晶显示面板的开口率。
在本公开实施例中,前述凸起结构111的具体形状不限,例如可以为沿第二方向延伸的条形凸起(如图3a中的第二凸起结构111b),或者,凸起结构111包括沿第二方向间隔排列的至少两个子凸起(如图3a中的第一凸起结构111a),其中,第二方向平行于第二衬底110b且与第一方向正交,例如第二方向为行向。子凸起的具体形状不限,例如子凸起可以为柱形,或者也呈沿第二方向延伸的条形。
在一个实施例中,隔垫物121在第二衬底110b上的正投影在平行于第二方向上的最大尺寸,小于凸起结构111在第二衬底110b上的正投影的两个远端之间的距离。另外,隔垫物121在第二衬底110b上的正投影可以大致位于沿第二方向延伸的第二凸起结构111b的中垂线上。这些设计,都进一步保障了凸起结构111对隔垫物121的有效阻挡作用。
在本公开的一些实施例中,前述的第一金属层112、半导体层113和第二金属层114位于遮光矩阵120的遮光区域内,从而能够被遮光矩阵120遮挡。凸起结构111包括多个图案层,多个图案层包括位于第一金属层112、半导体层113和第二金属层114中的至少两层的图案层。
凸起结构111的图案层是指对凸起结构111的凸出高度有贡献的结构层,相邻的图案层之间可以层叠设置,也可以间隔有其它层,如覆盖整个基板的绝缘层。在一些实施例中,例如,凸起结构可以包括位于第一金属层的图案层和位于半导体层的图案层。又例如,如图3b所示,凸起结构111可以包括位于第一金属层112的图案层和位于第二金属层114的图案层。再例如,如图3b所示,凸起结构111可以包括位于半导体层113的图案层和位于第二金属层114的图案层。再例如,如图3b所示,凸起结构111包括位于第一金属层112的图案层,位于半导体层113的图案层和位于第二金属层114的图案层。此外,凸起结构111还可以包括位于公共电极层115或像素电极层116的图案层。由于公共电极层115和像素电极层116的厚度比第一金属层112、半导体层113和第二金属层114的厚度小很多,因此,对凸出高度的贡献可以忽略不计,阵列基板11在制作公共电极层和像素电极层时,采用常规构图工艺即可。
阵列基板上的图案层一般通过干法刻蚀或湿法刻蚀形成,刻蚀断面与制作基面之 间会呈一定夹角。为使得刻蚀工艺更易管控,如图3b和图4b所示,凸起结构的各个图案层中,更加远离第二衬底110b的图案层在衬底上的正投影,落入更加靠近衬底的图案层在衬底上的正投影内,多个图案层在制作完成后呈阶梯状。
在一些实施例中,凸起结构111的其中一个图案层与栅线112a同位于第一金属层112,因此可以在同一次构图工艺中形成;凸起结构111的其中一个图案层与有源层113a同位于半导体层113,因此可以在同一次构图工艺中形成;凸起结构111的其中一个图案层与数据线114a同位于第二金属层114,因此可以在同一次构图工艺中形成。此外,凸起结构111的图案层也可以是公共电极层115或是像素电极层116的一部分。采用该实施例设计,有利于简化制作工艺,降低制作成本。该实施例中,第一绝缘层118a、第二绝缘层118b和第三绝缘层118c等虽然覆盖了凸起结构111的一些或全部图案层,但对凸起结构111的凸出高度增加并无贡献。
根据凸起结构的高度需求,可以灵活设计凸起结构的各图案层。如图3b所示,在一些实施例中,第二凸起结构111b的凸出高度大于第一凸起结构111a的凸出高度,在结构设计上,可以使第二凸起结构111b的图案层的数量大于第一凸起结构111a的图案层的数量。在忽略公共电极层115和像素电极层116对凸出高度的影响后,第一凸起结构111a包括两个图案层,分别位于半导体层113和第二金属层114,或者分别位于第一金属层112和第二金属层114;第二凸起结构111b包括三个图案层,分别位于第一金属层112、半导体层113、和第二金属层114。
在本公开的一些实施例中,如图3a、图3b、图4a和图4b所示,隔垫物121在第二衬底110b上的正投影落入栅线112a在第二衬底110b上的正投影内,各凸起结构111在第二衬底110b上的正投影与栅线112a在第二衬底110b上的正投影之间具有间距。将隔垫物121设置在栅线112a的正上方,可以有效利用栅线112a所在的遮光区域,从而尽量避免影响到液晶显示面板的开口率。在本公开的一些实施例中,凸起结构111在第二衬底110b上的正投影在栅线112a在第二衬底110b上的正投影的两侧呈对称分布,即凸起结构111在栅线112a的两侧呈对称分布,对于隔垫物121向栅线112a两侧的移位均能起到良好的阻挡和缓冲作用。隔垫物121和凸起结构111可以设置在栅线112a和数据线114a的交叉处,靠近大致呈矩形的子像素10的其中一角,这样可以尽量减小对开口区面积的影响。
在本公开的一些实施例中,如图3a、图3b、图4a和图4b所示,第一金属层112还包括沿行向延伸且通过过孔连接公共电极层115的公共电极线112c。公共电极线 112c设置在相邻两行子像素之间、栅线112a的其中一侧,并且通过过孔将沿行向排列的公共电极1150连接。该实施例中,一些第一凸起结构111a和一些第三凸起结构111c在第二衬底110b上的正投影落入该公共电极线112c在衬底110c上的正投影内,即公共电极线112c的一部分同时作为这些凸起结构的其中一个图案层,第二凸起结构111b在第二衬底110b上的正投影与公共电极线112c在第二衬底110b上的正投影之间具有间距。公共电极层115的一些列向相邻的公共电极单元1150之间可以通过过孔和跨线114d连接。跨线114d可以位于第二金属层114,与数据线114a在同一次构图工艺中形成。公共电极层115的各个公共电极1150通过公共电极线112c和跨线114d连接,公共电压信号可以通过公共电极线112c和跨线114d较为均匀的传输给公共电极层115,有利于减小公共电极层115的面内压降。采用该实施例设计,公共电极线112c制作完成便同时形成了一些凸起结构的其中一个图案层,使得阵列基板的制作工艺更为简化,从而进一步降低了制作成本。
如图2a所示,在本公开的该实施例中,多个隔垫物121在第二衬底110b上的正投影呈阵列排布,位于同一列的隔垫物121均为前述的第一隔垫物1211或均为前述的第二隔垫物1212。并且,沿行向方向,第一隔垫物1211和第二隔垫物1212交替排列。在一些实施例中,奇数列子像素与所相邻的隔垫物之间设置有第三凸起结构,偶数列子像素与所相邻的隔垫物之间设置有第一凸起结构和第二凸起结构。在另一些实施例中,第1,5,9,13…列子像素与所相邻的隔垫物之间设置有第三凸起结构,第3,7,11,15…列子像素与所相邻的隔垫物之间设置有第一凸起结构和第二凸起结构。由于隔垫物121的排布密度和排布方式可以有多种设计,因此,关于凸起结构的更多排布方式这里也不再一一列举。该实施例设计兼顾了液晶显示面板的开口率和对隔垫物移位的阻挡效果,此外,凸起结构的排布呈现规律性,使得制作工艺更易管控。
如图6所示,本公开实施例还提供了一种液晶显示装置,包括驱动电路和前述任一实施例的液晶显示面板1,驱动电路在图中省略未示出。由于液晶显示面板1的画面亮斑不良现象得以改善,因此,液晶显示装置的显示品质较佳。液晶显示装置的产品类型不限,例如可以为显示器、平板电脑、电视机、手机或者电子纸等等。
如图6所示,液晶显示装置还包括背光模组2,背光模组2位于阵列基板11远离对向基板12的一侧。背光模组2的具体类型不限,例如可以为直下式背光模组或侧入式背光模组。在本公开图6所示的实施例中,背光模组2为直下式背光模组,多个LED光源24在反射片21的表面均匀分布。
直下式背光模组的反射片21与扩散板22之间一般通过多个支撑柱23来维持一定间隔。相关技术中,当包含直下式背光模组的液晶显示装置受到较为剧烈的外力时,支撑柱会压迫液晶显示面板,更易导致隔垫物的移位和变形,进而产生亮斑不良。而在本公开实施例中,隔垫物与相邻的子像素之间设置的第一凸起结构和第二凸起结构可以对隔垫物起到多级阻挡作用,从而有效减少甚至避免了因隔垫物侵入开口区划伤配向层而导致的亮斑不良,产品品质较佳。
至此,已经详细描述了本公开的各实施例。为了避免遮蔽本公开的构思,没有描述本领域所公知的一些细节。本领域技术人员根据上面的描述,完全可以明白如何实施这里公开的技术方案。
虽然已经通过示例对本公开的一些特定实施例进行了详细说明,但是本领域的技术人员应该理解,以上示例仅是为了进行说明,而不是为了限制本公开的范围。本领域的技术人员应该理解,可在不脱离本公开的范围和精神的情况下,对以上实施例进行修改或者对部分技术特征进行等同替换。本公开的范围由所附权利要求来限定。

Claims (16)

  1. 一种液晶显示面板,包括由遮光矩阵界定的呈阵列排布的多个子像素,所述液晶显示面板包括间隔设置的阵列基板和对向基板,其中:
    所述对向基板包括第一衬底和多个隔垫物,所述多个隔垫物位于所述第一衬底的靠近所述阵列基板的一侧,且位于所述遮光矩阵的遮光区域内;
    所述阵列基板包括第二衬底和多个凸起结构,所述多个凸起结构位于所述第二衬底的靠近所述对向基板的一侧,且位于所述遮光矩阵的所述遮光区域内;
    所述多个凸起结构包括第一凸起结构和第二凸起结构,所述第一凸起结构和所述第二凸起结构在所述第二衬底上的正投影位于所述隔垫物在所述第二衬底上的正投影与相邻的所述子像素之间,所述第一凸起结构在所述第二衬底上的正投影与所述隔垫物在所述第二衬底上的正投影的最小间距,小于所述第二凸起结构在所述第二衬底上的正投影与所述隔垫物在所述第二衬底上的正投影的最小间距。
  2. 根据权利要求1所述的液晶显示面板,其中:
    所述隔垫物、所述第一凸起结构和所述第二凸起结构在所述第二衬底上的正投影沿第一方向排列;
    所述第一凸起结构在所述第二衬底上的正投影与所述隔垫物在所述第二衬底上的正投影的最小间距,以及,所述第二凸起结构在所述第二衬底上的正投影与所述第一凸起结构在所述第二衬底上的正投影的最小间距,均不小于所述隔垫物的顶面在所述第二衬底上的正投影在平行于所述第一方向上的最大尺寸。
  3. 根据权利要求2所述的液晶显示面板,其中:
    所述隔垫物呈锥台状;
    所述第一凸起结构在所述第二衬底上的正投影与所述隔垫物在所述第二衬底上的正投影的最小间距,以及,所述第二凸起结构在所述第二衬底上的正投影与所述第一凸起结构在所述第二衬底上的正投影的最小间距,均不小于所述隔垫物的顶面直径和底面直径之和的二分之一。
  4. 根据权利要求2所述的液晶显示面板,其中:所述第二凸起结构的凸出高度 大于所述第一凸起结构的凸出高度。
  5. 根据权利要求2所述的液晶显示面板,其中:所述凸起结构为沿第二方向延伸的条形凸起;或者,所述凸起结构包括沿第二方向间隔排列的至少两个子凸起;
    其中,所述第二方向平行于所述第二衬底且与所述第一方向正交。
  6. 根据权利要求5所述的液晶显示面板,其中:所述隔垫物在所述第二衬底上的正投影在平行于所述第二方向上的最大尺寸,小于所述凸起结构在所述第二衬底上的正投影的两个远端之间的距离。
  7. 根据权利要求1-6任一项所述的液晶显示面板,其中:
    所述多个隔垫物包括第一隔垫物和第二隔垫物;
    所述第一凸起结构和所述第二凸起结构在所述第二衬底上的正投影位于所述第一隔垫物在所述第二衬底上的正投影与相邻的所述子像素之间;
    所述多个凸起结构还包括第三凸起结构,所述第三凸起结构在所述第二衬底上的正投影位于所述第二隔垫物在所述第二衬底上的正投影与相邻的所述子像素之间,且所述第三凸起结构在所述第二衬底上的正投影与所述第二隔垫物在所述第二衬底上的正投影的最小间距,等于所述第一凸起结构在所述第二衬底上的正投影与所述第一隔垫物在所述第二衬底上的正投影的最小间距。
  8. 根据权利要求7所述的液晶显示面板,其中:所述阵列基板包括位于所述第二衬底的靠近所述对向基板的一侧的第一金属层、半导体层、第二金属层,公共电极层和像素电极层,所述第一金属层、所述半导体层和所述第二金属层位于所述遮光矩阵的所述遮光区域内;
    所述凸起结构包括多个图案层,所述第二凸起结构的图案层的数量大于所述第一凸起结构的图案层的数量;
    所述多个图案层包括位于所述第一金属层、所述半导体层和所述第二金属层中的至少两层的图案层。
  9. 根据权利要求8所述的液晶显示面板,其中:所述多个图案层还包括位于所 述公共电极层的图案层,和/或,位于所述像素电极层的图案层。
  10. 根据权利要求8所述的液晶显示面板,其中:所述第一金属层包括沿行向延伸的栅线,所述第二金属层包括沿列向延伸的数据线,所述隔垫物在所述第二衬底上的正投影落入所述栅线在所述第二衬底上的正投影内。
  11. 根据权利要求10所述的液晶显示面板,其中:所述第一金属层还包括沿行向延伸且连接所述公共电极层的公共电极线,至少一个所述凸起结构在所述第二衬底上的正投影落入所述公共电极线在所述第二衬底上的正投影内。
  12. 根据权利要求10所述的液晶显示面板,其中:所述凸起结构在所述第二衬底上的正投影在所述栅线的两侧呈对称分布。
  13. 根据权利要求7所述的液晶显示面板,其中:所述多个隔垫物呈阵列排布,且位于同一列的所述隔垫物均为所述第一隔垫物或均为所述第二隔垫物。
  14. 根据权利要求13所述的液晶显示面板,其中:沿行向方向,所述第一隔垫物和所述第二隔垫物交替排列。
  15. 根据权利要求7所述的液晶显示面板,其中:所述多个隔垫物包括主隔垫物和辅隔垫物,所述主隔垫物的高度大于所述辅隔垫物的高度,所述第一隔垫物和所述第二隔垫物均为所述辅隔垫物。
  16. 一种液晶显示装置,包括驱动电路和根据权利要求1-15任一项所述的液晶显示面板。
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