WO2018188301A1 - 显示基板及其制作方法、显示装置 - Google Patents

显示基板及其制作方法、显示装置 Download PDF

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Publication number
WO2018188301A1
WO2018188301A1 PCT/CN2017/107057 CN2017107057W WO2018188301A1 WO 2018188301 A1 WO2018188301 A1 WO 2018188301A1 CN 2017107057 W CN2017107057 W CN 2017107057W WO 2018188301 A1 WO2018188301 A1 WO 2018188301A1
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Prior art keywords
common electrode
shielding portion
light shielding
base substrate
substrate
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PCT/CN2017/107057
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English (en)
French (fr)
Inventor
许志财
王武
王小元
张逵
Original Assignee
京东方科技集团股份有限公司
重庆京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 重庆京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/777,031 priority Critical patent/US11042068B2/en
Publication of WO2018188301A1 publication Critical patent/WO2018188301A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • G—PHYSICS
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    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/33—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving directional light or back-light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
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    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/30—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers
    • G02B30/31—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers involving active parallax barriers
    • G—PHYSICS
    • G02—OPTICS
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    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
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    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/30—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers
    • G02B30/32—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers characterised by the geometry of the parallax barriers, e.g. staggered barriers, slanted parallax arrays or parallax arrays of varying shape or size
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—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
    • G02F1/133553—Reflecting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/201—Filters in the form of arrays
    • 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
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/121—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode common or background
    • G—PHYSICS
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    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel

Definitions

  • At least one embodiment of the present disclosure is directed to a display substrate, a method of fabricating the same, and a display device.
  • the naked eye three-dimensional (3D) display means that the images of the left and right eyes enter the left and right eyes of the user through different optical paths without special glasses, and the two images are slightly different, and finally the user A 3D image is formed in the brain.
  • the naked-eye 3D display has the stereoscopic reality and can give the audience an immersive advantage, which makes the research of the naked-eye 3D display important.
  • the current naked-eye 3D technology mainly includes: light barrier type 3D display technology, lenticular lens type 3D display technology and pointing light source type 3D display technology.
  • the light barrier type 3D display technology mainly uses a barrier to control the optical path to realize 3D display; the lenticular lens type 3D display technology utilizes a columnar lens to control the optical path by refraction to realize 3D display; the pointing light source type 3D display technology is adopted
  • the backlight controls the light path to achieve 3D display.
  • At least one embodiment of the present disclosure provides a display substrate, a method of fabricating the same, and a display device.
  • the display substrate cooperates with the first light shielding portion through the first common electrode strip to transmit the light for the left eye image displayed by the pixel group to the left eye of the user, and the light for the right eye image displayed by the pixel group It is transmitted to the user's right eye, thereby achieving a naked-eye 3D display effect.
  • At least one embodiment of the present disclosure provides a display substrate including a substrate substrate, a plurality of pixel groups on the substrate substrate, and a first light blocking portion between the pixel group and the substrate.
  • Each pixel group includes two pixel units, each of which includes a common electrode including two opaque first common electrode strips extending in a first direction and between two opaque first common electrode strips a second common electrode strip; the first light shielding portion extends in the first direction, and the two opaque portions
  • the orthographic projection of the spacing between the first common electrode strips on the substrate substrate falls within the orthographic projection of the first masking portion on the substrate substrate.
  • the vertical distance of the first common electrode strip from the substrate substrate is gradually decreased, and the side of the first common electrode strip facing the substrate substrate is reflected. surface.
  • the pixel group includes: an interlayer dielectric layer on the first light shielding portion, the interlayer dielectric layer has a trapezoidal cross section, and the two opaque first common electrode strips are respectively located on the two waists of the trapezoid.
  • the interlayer dielectric layer includes a color film layer.
  • the ratio of the size of the two opaque first common electrode strips in the second direction perpendicular to the first direction to the size of the pixel group in the second direction ranges from 40% to 60%, and the second direction is parallel to the lining Base substrate.
  • the display substrate further includes: a data line extending in the first direction and spaced apart from the first light blocking portion in a second direction perpendicular to the first direction, wherein the direction is perpendicular to the substrate
  • the edge of the data line adjacent to the first light shielding portion is aligned with the edge of the first common electrode strip away from the second common electrode strip or the data line and the first common electrode strip overlap, and the second direction is parallel to the base substrate.
  • the first light shielding portion is located on the same layer as the data line.
  • the display substrate further includes: a gate line extending in the second direction, the first light shielding portion and the gate line being in the same layer.
  • the display substrate further includes: a second light shielding portion disposed in the same layer as the data line, and an orthographic projection of the second light shielding portion on the base substrate falls within an orthographic projection of the first light shielding portion on the base substrate.
  • the material of the first light shielding portion and the material of the second light shielding portion include a conductive material, and the first light shielding portion is electrically connected to the second light shielding portion, and the first light shielding portion is electrically connected to the common electrode.
  • the pixel group further includes a pixel electrode disposed in the same layer as the common electrode, and the pixel electrode is located between the first common electrode strip and the second common electrode strip.
  • two pixel units in each pixel group are axially symmetrically distributed with respect to a center line of the second common electrode in the first direction.
  • At least one embodiment of the present disclosure provides a method of fabricating a display substrate, the method of fabricating the display substrate includes: forming a first light shielding portion extending in a first direction on the substrate; and moving away from the substrate in the first light shielding portion One side forms a pixel group, each pixel group includes two pixel units, each pixel group includes a common electrode, and the common electrode includes two opaque first common electrode strips extending in a first direction and two opaque sections a second common electrode strip between the common electrode strips, wherein the two first The orthographic projection of the spacing between the common electrode strips on the substrate substrate falls within the orthographic projection of the first masking portion on the substrate substrate.
  • forming the pixel group includes: forming an interlayer dielectric layer on the first light shielding portion, the interlayer dielectric layer has a trapezoidal cross section, wherein the two opaque first common electrode strips are respectively formed on the two waists of the trapezoid .
  • the manufacturing method of the display substrate further includes: forming a second light shielding portion on the first light shielding portion, and the orthographic projection of the second light shielding portion on the base substrate falls within the orthographic projection of the first light shielding portion on the base substrate.
  • At least one embodiment of the present disclosure provides a display device including any of the display substrates provided by the embodiments of the present disclosure.
  • 1a is a cross-sectional view of a display substrate according to an embodiment of the present disclosure
  • FIG. 1b is a partial structural diagram of the display substrate shown in FIG. 1a;
  • FIG. 1b is a partial structural diagram of the display substrate shown in FIG. 1a;
  • 1c is a cross-sectional view of a display substrate according to an embodiment of the present disclosure.
  • 1d is a cross-sectional view of a display substrate according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of steps of a method for fabricating a display substrate according to an embodiment of the present disclosure
  • 3a-6b are schematic diagrams showing a manufacturing process of a display substrate according to an embodiment of the present disclosure.
  • TFT-LCD thin film transistor-liquid crystal display
  • Embodiments of the present disclosure provide a display substrate, a method of fabricating the same, and a display device.
  • the display substrate includes a substrate substrate, a plurality of pixel groups on the substrate substrate, and a first light blocking portion between the pixel group and the substrate.
  • Each pixel group includes two pixel units, each of which includes a common electrode including two opaque first common electrode strips extending in a first direction and between two opaque first common electrode strips a second common electrode strip; the first light shielding portion extends in the first direction, and an orthographic projection of the interval between the two opaque first common electrode strips on the substrate substrate falls into the first light shielding portion on the base substrate Inside the orthographic projection.
  • the display substrate cooperates with the first light shielding portion through the first common electrode strip to transmit the light for the left eye image displayed by the pixel group to the left eye of the user, and the light for the right eye image displayed by the pixel group It is transmitted to the user's right eye, thereby achieving a naked-eye 3D display effect.
  • the present embodiment provides a display substrate.
  • the display substrate includes a substrate substrate 100, a plurality of pixel groups 2120 on the substrate substrate 100, and a portion between the pixel group 2120 and the substrate substrate 100.
  • a light blocking portion 300 The arrangement of one pixel group 2120 on the base substrate 100 in FIG. 1a is merely illustrative, and a plurality of pixel groups 2120 may be disposed on the base substrate 100. This embodiment is described by taking the display substrate as an array substrate as an example, and the embodiment is not limited thereto.
  • the pixel group 2120 includes two pixel units 210 and 220, which are respectively configured to display images of left and right eyes.
  • the pixel group 2120 composed of the pixel units 210 and 220 includes a common electrode 2110 including two opaque first common electrode strips 211 extending in the first direction and between the two opaque first common electrode strips 211 The second common electrode strip 212.
  • the two pixel units 210 and 220 herein have a first common electrode strip 211 and share a second common electrode strip 212.
  • the opaque first common electrode strip 211 functions as a light blocking.
  • the first direction is a direction perpendicular to the paper surface, and the Y direction shown in FIG. 1a is a second direction, and the embodiment is not limited thereto.
  • the first light blocking portion 300 extends in the first direction, and the dimension Ls of the first light blocking portion 300 in the Y direction is not less than the interval Li between the two first common electrode strips 211.
  • the orthographic projection of the interval Li between the two first common electrode strips 211 on the base substrate 100 falls within the orthographic projection of the first light blocking portion 300 on the base substrate 100, that is, perpendicular to the substrate.
  • the edge of the first common electrode strip 211 near the second common electrode strip 212 may be aligned with the edge of the first light shielding portion 300 near the first common electrode strip 211, or the first common electrode strip 211 and the first light shielding layer
  • the portions 300 have overlaps, and the size of the overlapping portions in the Y direction does not exceed 2 ⁇ m.
  • This embodiment includes but is not limited thereto. It should be noted that the size of the overlapping portion cannot be too large to affect the normal display.
  • the relationship between the first common electrode strip 211 and the first light blocking portion 300 indicates that light incident from the side of the base substrate 100 facing away from the first light blocking portion 300 cannot be from the display substrate in a direction perpendicular to the base substrate 100.
  • the first common electrode strip 211 provided in this embodiment has a wide width, and can cooperate with the first light shielding portion 300 to form a barrier, so that the light can only be emitted in a fixed direction under the action of the barrier. In order to achieve the purpose of controlling the light path.
  • the first common electrode strip 211 cooperates with the first light blocking portion 300 to cause the image for the left eye displayed by the pixel group 2120 to be transmitted to the left eye of the user, and to display the pixel group 2120.
  • the image in the right eye is transmitted to the right eye of the user.
  • the first light blocking portion 300 For example, as shown in FIG. 1a, light incident from the side of the base substrate 100 facing away from the first light blocking portion 300 is divided into two portions by the first light blocking portion 300, that is, incident from a backlight (not shown).
  • the light of the base substrate 100 can be incident into the display substrate only through the left and right sides of the first light blocking portion 300 in the Y direction, and then the light path is changed by the opaque first common electrode strip 211 of the pixel group 2120 on both sides in the Y direction. Shoot the left and right eyes of the user separately.
  • the light ray incident from the right side in the Y direction by the first light blocking portion 300 passes through the first pixel unit 210 and is emitted toward the left (right) eye of the user, and is incident on the left side of the first light blocking portion 300 in the Y direction.
  • the emitted light B after the light passes through the second pixel unit 220 is directed to the right (left) eye of the user. Since the first pixel unit 210 and the second pixel unit 220 respectively display images of the left and right eyes, and the image displayed by each pixel unit is only It can enter one eye corresponding to the user and cannot enter the other eye, thus preventing image interference and achieving naked-eye 3D display.
  • the pixel group 2120 further includes a pixel electrode 213 disposed in the same layer as the common electrode 2110.
  • the pixel electrode 213 is located between the first common electrode strip 211 and the second common electrode strip 212.
  • the display substrate provided in this embodiment is an In-Plane Switching (IPS) display mode, and may be, for example, an advanced super-dimensional field switch (Advanced-Super Dimensional). Switching, ADS) mode, Fringe Field Switching (FFS) mode, etc.
  • IPS In-Plane Switching
  • ADS advanced super-dimensional field switch
  • FFS Fringe Field Switching
  • the material of the pixel electrode may be a transparent conductive material, and may include, for example, indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In 2 O 3 ), indium gallium oxide (IGO).
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • ZnO zinc oxide
  • IGO indium gallium oxide
  • the combination or at least one of the embodiments is not limited in this embodiment.
  • the material of the pixel electrode can also be selected from the same material as the common electrode, thereby completing the fabrication of the pixel electrode and the common electrode in the one-step patterning process, which can save the process.
  • the first common electrode strip 211 is gradually decreased from the second common electrode strip 212 toward the second common electrode strip 212, and the vertical distance of the first common electrode strip 211 from the base substrate 100 is gradually decreased. That is, the plane where the first common electrode strip 211 is located has an oblique angle with the plane of the base substrate 100.
  • the plane of the first common electrode strip 211 in the first pixel unit 210 and the plane of the substrate substrate 100 are inclined (an acute angle) and the first common electrode strip 211 in the second pixel unit 220.
  • the inclination angle (an acute angle) of the plane in which the plane and the substrate substrate 100 are located is the same, and the embodiment includes but is not limited thereto.
  • the side of the first common electrode strip 211 facing the base substrate 100 is a reflective surface, and the light incident by the first light blocking portion 300 in the right direction of the Y direction passes through the first of the first pixel units 210.
  • the reflected outgoing light A' of the common electrode strip 211 is incident on the left (right) eye of the user, and the light incident from the left side of the first light blocking portion 300 in the Y direction passes through the first common electrode strip 211 in the second pixel unit 220.
  • the reflected outgoing light B' is directed toward the right (left) eye of the user.
  • the first common electrode strip 211 Since the first common electrode strip 211 also functions as a reflection, more light can be reflected by the first common electrode strip 211 and emitted through the pixel group 2120 to increase the transmittance of the display substrate. On the other hand, since the outgoing light A'(B') and the outgoing light A(B) are not in one direction, the inclined design of the first common electrode strip 211 can also increase the viewing angle of the display substrate.
  • the design structure of the display substrate provided by the embodiment can be compatible with the fabrication equipment of the general TFT-LCD to achieve the naked-eye 3D display on the basis of the TFT-LCD, and the TFT-LCD production line transformation cost is reduced.
  • the first common electrode strip 211 is not limited to the oblique design as long as light incident from the side of the base substrate 100 facing away from the first light blocking portion 300 cannot be emitted from the display substrate in a direction perpendicular to the base substrate 100.
  • the material of the first common electrode strip 211 may be one or more selected from the group consisting of titanium (Ti), platinum (Pt), gold (Au), and chromium (Cr), which is not limited in this embodiment.
  • the second common electrode strip 212 may be the same opaque as the first common electrode strip 211.
  • the conductive material is made to limit the outgoing light A' (B') and the outgoing light A (B), and the embodiment includes but is not limited thereto.
  • the pixel group 2120 further includes an interlayer dielectric layer 2340, and the interlayer dielectric layer 2340 is located on the first light shielding portion 300.
  • the interlayer dielectric layer 2340 has a trapezoidal cross section, and the two opaque first common electrode strips 211 are respectively located on the two waists of the trapezoid to realize a tilt design. This embodiment includes but is not limited thereto.
  • the cross-section of the interlayer dielectric layer 2340 is an isosceles trapezoid to achieve the same inclination angle of the two first common electrode strips 211, and the embodiment includes but is not limited thereto.
  • the interlayer dielectric layer 2340 includes a color film layer 230 (non-resin material) and a resin layer 240. At least one of the color film layer 230 and the resin layer 240 has a trapezoidal cross section. In this embodiment, the color film layer 230 and the resin layer are used. The cross section of the 240 is a trapezoid as an example. The embodiment includes but is not limited thereto.
  • the interlayer dielectric layer may further include other film layers.
  • the ratio of the size of the two opaque first common electrode strips 211 in the second direction perpendicular to the first direction, that is, the Y direction, to the size of the pixel group 2120 in the Y direction ranges from 40% to 60%.
  • the ratio of the sizes of the two first common electrode strips 211 in the Y direction to the size of the pixel group 2120 in the Y direction is 50%, and the interval between the two first common electrodes 211 is on the base substrate 100.
  • the dimension of the first light blocking portion 300 in the Y direction corresponds to a ratio of the size of the pixel group 2120 in the Y direction is 50%.
  • Embodiments include but are not limited to.
  • FIG. 1b is a partial layer structure diagram of the display substrate shown in FIG. 1a.
  • the display substrate provided in this embodiment further includes a gate line 500 extending along the Y direction, and the first light shielding portion. 300 is on the same layer as the gate line 500.
  • the first light blocking portion 300 may be a common electrode line of the same layer of the gate line 500.
  • the common electrode line (the first light blocking portion 300) provided in this embodiment has a wide width, and a light blocking effect can be achieved.
  • the first light shielding portion formed by the common electrode line may be electrically connected to the common electrode in the pixel group through the via hole, and the embodiment includes but is not limited thereto.
  • FIG. 1c shows a cross-sectional view of a display substrate provided by another example of the embodiment.
  • the display substrate further includes a data line 400 extending in the first direction and in the Y direction.
  • the first light blocking portions 300 are spaced apart such that light incident from the side of the base substrate 100 facing away from the first light blocking portion 300 can enter the pixel group from between the data line 400 and the first light blocking portion 300.
  • the edge of the data line 400 near the first light blocking portion 300 and the An edge of a common electrode strip 211 away from the second common electrode strip 212 is aligned or the data line 400 and the first common electrode strip 211 overlap to be incident from a side of the base substrate 100 facing away from the first light blocking portion 300. Light cannot exit from the display substrate in a direction perpendicular to the base substrate 100.
  • the first light blocking portion 300 and the data line 400 may be located in the same layer.
  • FIG. 1d shows a cross-sectional view of a display substrate provided by another example of the present embodiment.
  • the first light blocking portion 300 is located in the same layer as the gate.
  • the display substrate further includes a second light blocking portion 600.
  • the second light blocking portion 600 is disposed in the same layer as the data line 400, and the orthographic projection of the second light blocking portion 600 on the base substrate 100 falls into the first light blocking portion 300 on the base substrate 100.
  • the second light blocking portion 600 extends in the first direction, and the dimension of the second light blocking portion 600 in the Y direction is not greater than the dimension Ls of the first light blocking portion 300 in the Y direction.
  • the second light shielding portion provided in this embodiment is used to implement a further light shielding function to prevent the light incident on the color film layer corresponding to the first (two) pixel unit from being emitted from the second (one) pixel unit to cause a crosstalk phenomenon.
  • the second light blocking portion 600 may also be a common electrode line disposed in the same layer as the source and drain electrodes.
  • the common electrode line (the second light blocking portion 600) provided in this embodiment has a wide width, and a light blocking effect can be achieved.
  • the second light shielding portion formed by the common electrode line may be electrically connected to the first light shielding portion through the via hole to reduce the resistance of the entire common electrode line.
  • two pixel cells 210 and 220 in each pixel group 2120 are axially symmetrically distributed with respect to a center line of the second common electrode 212 in the first direction.
  • the pixel electrodes of two pixel units in each pixel group may be independently controlled, so that different voltages may be applied to different pixel units such that the two pixel units respectively display the left eye And right eye images.
  • the embodiment provides a method for fabricating a display substrate.
  • the specific steps of the method for fabricating the display substrate are as shown in FIG. 2, and include:
  • 3a-6b are schematic diagrams showing a manufacturing process of the display substrate according to the embodiment, and the manufacturing process of the display substrate provided in this embodiment is described by taking a display substrate as shown in FIG. 1d as an example.
  • FIG. 3a a top view of the substrate is shown.
  • a gate line 500 and a gate are formed on the substrate substrate 100 by a process of film formation, exposure, etching, etc., and then formed on the layer where the gate is located.
  • the first light blocking portion 300 extending in the first direction, where the first direction refers to the X direction.
  • FIG. 3b is a cross-sectional view taken along line CC' of FIG. 3a, and after the first light blocking portion 300 is formed, a gate insulating layer 110 is formed on the first light blocking portion 300.
  • the gate insulating layer 110 is not shown in FIG. 3a.
  • 3a and 3b show that the formation of a first light-shielding portion 300 on the base substrate 100 is merely illustrative, and a plurality of first light-shielding portions 300 that are parallel to each other may be formed on the base substrate 100.
  • the first light blocking portion 300 may be a common electrode line of the same layer of the gate line.
  • the common electrode line (the first light blocking portion 300) formed in this embodiment has a wide width, and a light blocking effect can be achieved.
  • a source substrate leakage in the thin film transistor 130 is formed on the gate insulating layer 110 by a film forming, exposure, and etching process after the first light blocking portion 300 is formed, as shown in FIG. 4a.
  • the data line 400 formed on the base substrate 100 extends in the X direction, and the data line 400 is spaced apart from the first light blocking portion 300 in a second direction perpendicular to the X direction, that is, in the Y direction.
  • the orthographic projection of the second light blocking portion 600 on the base substrate 100 falls within the orthographic projection of the first light blocking portion 300 on the base substrate 100, that is, the second light blocking portion 600 extends in the X direction, and the second light blocking portion
  • the dimension of the 600 in the Y direction is not larger than the dimension of the first light blocking portion 300 in the Y direction.
  • the second light shielding portion 600 provided in this embodiment is used to achieve a further light shielding effect.
  • the second light blocking portion 600 may be a common electrode line formed in the same layer as the source and drain electrodes, and the common electrode line (the second light blocking portion 600) formed in the present embodiment has a wide width, and a further light shielding effect can be achieved.
  • the second light shielding portion formed by the common electrode line may be electrically connected to the first light shielding portion through the via hole to reduce the resistance of the entire common electrode line.
  • FIG. 4b is a cross-sectional view in the CC' direction of FIG. 4a, and after the second light shielding portion 600 is formed, a passivation layer 120 is formed on the second light shielding portion 600. In order to clearly show a top view of the display substrate, the passivation layer 120 is not shown in FIG. 4a.
  • each pixel group including two pixel units, each pixel group including a common electrode, and the common electrode includes two opaque first sections extending in the first direction A common electrode strip and a second common electrode strip between the two opaque first common electrode strips.
  • forming a pixel group in the present embodiment includes forming an interlayer dielectric layer 2340, a metal connection hole, and the like on the passivation layer 120.
  • the interlayer dielectric layer 2340 may include a color film layer 230 (non-resin material) and a resin layer 240.
  • the cross-section of the interlayer dielectric layer 2340 is trapezoidal.
  • the patterned layers of the color film layer 230 and the resin layer 240 are formed.
  • the shape of the trapezoid is described as an example, and the embodiment includes but is not limited thereto.
  • the cross section of the color film layer 230 and the resin layer 240 are both isosceles trapezoids, and the embodiment includes but is not limited thereto.
  • FIG. 5b is a cross-sectional view taken along line CC' of FIG. 5a, and after the color film layer 230 is formed, a resin layer 240 is formed on the color film layer 230.
  • an interlayer dielectric layer 2340 is schematically illustrated in Figure 5a.
  • forming a pixel group in the present embodiment includes forming two pixel units 210 and 220.
  • the pixel group consisting of the pixel units 210 and 220 includes a common electrode, and the common electrode includes extending along the X direction and arranged along the Y.
  • the two opaque first common electrode strips 211 and the second common electrode strip 212 between the two opaque first common electrode strips 211, the first common electrode strip 211 and the second common electrode strip 212 pass through the connecting portion 214 Electrical connection.
  • the two pixel units 210 and 220 herein have a first common electrode strip 211 and share a second common electrode strip 212.
  • the opaque first common electrode strip 211 functions as a light blocking.
  • FIG. 6b is a cross-sectional view in the CC' direction of FIG. 6a, and forming a pixel group on the base substrate 100 in FIGS. 6a and 6b is merely illustrative, and a plurality of pixel groups may be formed on the base substrate 100.
  • first common electrode strips 211 are respectively formed on the two waists of the trapezoidal cross section of the interlayer dielectric layer 2340 to achieve a tilted design, that is, the first common electrode strip 211 is approached from the second common electrode strip 212.
  • This embodiment includes but is not limited to.
  • the cross-section of the interlayer dielectric layer 2340 is an isosceles trapezoid, and the angle between the plane where the first common electrode strip 211 in the first pixel unit 210 and the plane of the substrate substrate 100 are located (an acute angle) and the second pixel unit
  • the plane of the first common electrode strip 211 in 220 is the same as the plane of inclination (an acute angle) of the plane in which the substrate substrate 100 is located, and the embodiment includes but is not limited thereto.
  • a side of the first common electrode strip 211 facing the base substrate 100 is a reflective surface, and light rays incident by the first light blocking portion 300 in the Y direction on the right side pass through the first common electrode strip 211 in the first pixel unit 210.
  • the emitted light is emitted to the left (right) eye of the user, and the light incident by the first light blocking portion 300 along the left side in the Y direction is reflected by the first common electrode strip 211 in the second pixel unit 220, and the emitted light is emitted to the user.
  • Right (left) eye is a side of the first common electrode strip 211 facing the base substrate 100.
  • the first common electrode strip 211 acts as a reflection, more light can be reflected by the first common electrode strip 211 and emitted through the pixel group to increase the transmittance of the display substrate.
  • the tilt design of the first common electrode strip 211 can also increase the viewing angle of the display substrate.
  • the design structure of the display substrate provided by this embodiment can be compared with a general TFT-LCD.
  • the production equipment is compatible to achieve naked-eye 3D display on the basis of TFT-LCD, and the purpose of reducing the cost of TFT-LCD production line transformation.
  • the patterned cross section of the interlayer dielectric layer 2340 may not be trapezoidal, that is, the first common electrode strip 211 is not limited to the oblique design, as long as the light incident from the side of the base substrate 100 facing away from the first light blocking portion 300 cannot be It is sufficient to exit the display substrate in a direction perpendicular to the base substrate 100.
  • the second common electrode strip 212 may be made of the same opaque conductive material as the first common electrode strip 211, thereby limiting the exiting optical path.
  • This embodiment includes but is not limited thereto.
  • the orthographic projection of the interval between the two opaque first common electrode strips 211 on the base substrate 100 falls into the orthographic projection of the first light blocking portion 300 on the base substrate 100.
  • the edge of the first common electrode strip 211 near the second common electrode strip 212 may be aligned with the edge of the first light shielding portion 300 near the first common electrode strip 211, or in a direction perpendicular to the base substrate 100, or
  • the first common electrode strip 211 overlaps with the first light blocking portion 300, and the size of the overlapping portion in the Y direction does not exceed 2 ⁇ m.
  • This embodiment includes but is not limited thereto.
  • the light incident from the side of the base substrate 100 facing away from the first light-shielding portion 300 cannot be emitted from the display substrate in a direction perpendicular to the substrate 100, that is, the first common electrode strip 211 provided in the embodiment has a wider width.
  • the interaction with the first light shielding portion 300 can be realized to form a barrier, so that the light can be emitted only in a fixed direction under the action of the barrier, thereby achieving the purpose of controlling the light path.
  • the first common electrode strip 211 cooperates with the first light blocking portion 300 to cause the light for the left eye image displayed by the pixel group to be transmitted to the left eye of the user, and the light transmission for the right eye image displayed by the pixel group To the user's right eye.
  • the data line 400 is spaced apart from the first light blocking portion 300 in the Y direction, so that light incident from the side of the base substrate 100 facing away from the first light blocking portion 300 can be transmitted from the data line 400 and the first light blocking portion.
  • the pixel group is injected between 300.
  • the edge of the data line 400 near the first light blocking portion 300 is aligned with the edge of the first common electrode strip 211 away from the second common electrode strip 212 or the data line 400 and the first common in a direction perpendicular to the base substrate 100.
  • the electrode strips 211 are overlapped so that light incident from the side of the base substrate 100 facing away from the first light blocking portion 300 cannot be emitted from the display substrate in a direction perpendicular to the base substrate 100.
  • forming the pixel group further includes forming the pixel electrode 213 in the same layer as the common electrode, and the pixel electrode 213 is formed between the first common electrode strip 211 and the second common electrode strip 212.
  • the display substrate provided in this embodiment is an In-Plane Switching (IPS) display mode, and may be, for example, an Advanced-Super Dimensional Switching (ADS). Mode, Fringe Field Switching (FFS) mode, etc.
  • IPS In-Plane Switching
  • ADS Advanced-Super Dimensional Switching
  • FFS Fringe Field Switching
  • the material of the pixel electrode can be selected from the same material as the common electrode, thereby completing the fabrication of the pixel electrode and the common electrode in the one-step patterning process, which can save the process.
  • the embodiment provides a display device, which includes any display substrate provided in Embodiment 1, wherein the first common electrode strip cooperates with the first light shielding portion to display the pixel group for the left.
  • the light of the eye image is transmitted to the left eye of the user, and the light for the right eye image displayed by the pixel group is transmitted to the right eye of the user, thereby achieving a naked eye 3D display effect.
  • the display device may be a liquid crystal display device and any product or component having a display function such as a television, a digital camera, a mobile phone, a watch, a tablet, a notebook computer, a navigator, and the like including the display device, and the embodiment is not limited thereto.
  • the liquid crystal display device further includes an opposite substrate disposed opposite to the display substrate, and the display substrate and the counter substrate are disposed to form a liquid crystal cell, and the liquid crystal layer is located between the display substrate and the opposite substrate.

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Abstract

一种显示基板及其制作方法、显示装置，显示基板包括：衬底基板(100)、位于衬底基板(100)上的多个像素组(2120)以及位于像素组(2120)与衬底基板(100)之间的第一遮光部(300)。每个像素组(2120)包括两个像素单元(210，220)，每个像素组(2120)包括两个不透明的第一公共电极条(211)以及位于两个不透明的第一公共电极条(211)之间的第二公共电极条(212)，两个不透明的第一公共电极条(211)之间的间隔在衬底基板(100)上的正投影落入第一遮光部(300)在衬底基板(100)上的正投影内。显示基板中通过第一公共电极条(211)与第一遮光部(300)共同作用以使像素组(2120)显示的用于左眼图像的光传送向用户的左眼，且使像素组(2120)显示的用于右眼图像的光传送向用户的右眼，从而实现裸眼3D显示效果。

Description

显示基板及其制作方法、显示装置
本申请要求于2017年4月11日递交的中国专利申请第201710233459.X号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开至少一个实施例涉及一种显示基板及其制作方法、显示装置。
背景技术
裸眼三维(3D)显示是指在不借助特殊眼镜的情况下，左眼和右眼的图像通过不同的光路分别进入用户的左眼和右眼，两幅画面略微有一定的区别，最后在用户的大脑中形成3D图像。相比普通的2D显示，裸眼3D显示具有立体逼真，能够让观众身临其境的优势，这使得裸眼3D显示的研究具有重要的意义。
目前的裸眼3D技术主要包括：光屏障式3D显示技术，柱状透镜式3D显示技术以及指向光源式3D显示技术。光屏障式3D显示技术主要是利用屏障来控制光路，从而实现3D显示；柱状透镜式3D显示技术是利用柱状的透镜，通过折射来控制光路，从而实现3D显示；指向光源式3D显示技术是通过背光源来控制光路，进而实现3D显示。
发明内容
本公开的至少一实施例提供一种显示基板及其制作方法、显示装置。该显示基板中通过第一公共电极条与第一遮光部共同作用以使像素组显示的用于左眼图像的光传送向用户的左眼，且使像素组显示的用于右眼图像的光传送向用户的右眼，从而实现裸眼3D显示效果。
本公开的至少一实施例提供一种显示基板，该显示基板包括衬底基板、位于衬底基板上的多个像素组以及位于像素组与衬底基板之间的第一遮光部。每个像素组包括两个像素单元，每个像素组包括公共电极，公共电极包括沿第一方向延伸的两个不透明的第一公共电极条以及位于两个不透明的第一公共电极条之间的第二公共电极条；第一遮光部沿第一方向延伸，并且，两个不透明 的第一公共电极条之间的间隔在衬底基板上的正投影落入第一遮光部在衬底基板上的正投影内。
例如，从靠近第二公共电极条向远离第二公共电极条的方向，第一公共电极条距衬底基板的垂直距离逐渐减小，且第一公共电极条面向衬底基板的一侧为反射面。
例如，像素组包括：层间介电层，位于第一遮光部上，层间介电层的截面为梯形，两个不透明的第一公共电极条分别位于梯形的两个腰上。
例如，层间介电层包括彩膜层。
例如，两个不透明的第一公共电极条沿与第一方向垂直的第二方向的尺寸之和占像素组沿第二方向的尺寸的比例范围为40％-60％，第二方向平行于衬底基板。
例如，显示基板还包括：数据线，沿第一方向延伸，且在沿与第一方向垂直的第二方向上与第一遮光部之间有间隔，其中在沿垂直于衬底基板的方向上，数据线的靠近第一遮光部的边缘与第一公共电极条的远离第二公共电极条的边缘对齐或者数据线和第一公共电极条有交叠，第二方向平行于衬底基板。
例如，第一遮光部与数据线位于同一层。
例如，显示基板还包括：栅线，沿第二方向延伸，第一遮光部与栅线位于同一层。
例如，显示基板还包括：第二遮光部，与数据线同层设置，且第二遮光部在衬底基板上的正投影落入第一遮光部在衬底基板上的正投影内。
例如，第一遮光部的材料与第二遮光部的材料包括导电材料，且第一遮光部与第二遮光部电连接，第一遮光部与公共电极电连接。
例如，像素组还包括与公共电极同层设置的像素电极，像素电极位于第一公共电极条与第二公共电极条之间。
例如，每个像素组中的两个像素单元相对于第二公共电极沿第一方向的中心线呈轴对称分布。
本公开的至少一实施例提供一种显示基板的制作方法，该显示基板的制作方法包括：在衬底基板上形成沿第一方向延伸的第一遮光部；在第一遮光部远离衬底基板的一侧形成像素组，每个像素组包括两个像素单元，每个像素组包括公共电极，公共电极包括沿第一方向延伸的两个不透明的第一公共电极条以及位于两个不透明的第一公共电极条之间的第二公共电极条，其中，两个第一 公共电极条之间的间隔在衬底基板上的正投影落入第一遮光部在衬底基板上的正投影内。
例如，形成像素组包括：在第一遮光部上形成层间介电层，层间介电层的截面为梯形，其中，两个不透明的第一公共电极条分别形成在梯形的两个腰上。
例如，显示基板的制作方法还包括：在第一遮光部上形成第二遮光部，第二遮光部在衬底基板上的正投影落入第一遮光部在衬底基板上的正投影内。
本公开的至少一实施例提供一种显示装置，包括本公开实施例提供的任一种显示基板。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1a为本公开一实施例提供的显示基板的剖视图；
图1b为图1a所示的显示基板的部分层结构示意图；
图1c为本公开一实施例提供的显示基板的剖视图；
图1d为本公开一实施例提供的显示基板的剖视图；
图2为本公开一实施例提供的显示基板的制作方法步骤示意图；
图3a-图6b为本公开一实施例提供的显示基板的制作工艺流程示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。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组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或 者物件。“上”、“下”、“左”、“右”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。
在研究中，本申请的发明人发现：在薄膜晶体管-液晶显示器(TFT-LCD)的基础上实现裸眼3D显示可以减少TFT-LCD产线的改造成本，并且可以降低裸眼3D显示器的价格。
本公开的实施例提供一种显示基板及其制作方法、显示装置。该显示基板包括衬底基板、位于衬底基板上的多个像素组以及位于像素组与衬底基板之间的第一遮光部。每个像素组包括两个像素单元，每个像素组包括公共电极，公共电极包括沿第一方向延伸的两个不透明的第一公共电极条以及位于两个不透明的第一公共电极条之间的第二公共电极条；第一遮光部沿第一方向延伸，并且，两个不透明的第一公共电极条之间的间隔在衬底基板上的正投影落入第一遮光部在衬底基板上的正投影内。该显示基板中通过第一公共电极条与第一遮光部共同作用以使像素组显示的用于左眼图像的光传送向用户的左眼，且使像素组显示的用于右眼图像的光传送向用户的右眼，从而实现裸眼3D显示效果。
下面结合附图对本公开实施例提供的显示基板及其制作方法、显示装置进行说明。
实施例一
本实施例提供一种显示基板，如图1a所示，该显示基板包括衬底基板100、位于衬底基板100上的多个像素组2120以及位于像素组2120与衬底基板100之间的第一遮光部300。图1a中在衬底基板100上设置一个像素组2120仅仅是示意性的，衬底基板100上可以设置多个像素组2120。本实施例以显示基板为阵列基板为例进行描述，本实施例不限于此。
如图1a所示，该像素组2120包括两个像素单元210和220，两个像素单元210和220分别被配置为显示左右眼的图像。像素单元210和220组成的像素组2120包括公共电极2110，公共电极2110包括沿第一方向延伸的两个不透明的第一公共电极条211以及位于两个不透明的第一公共电极条211之间的第二公共电极条212。需要说明的是，这里的两个像素单元210和220分别具有一个第一公共电极条211，并且共用一个第二公共电极条212。不透明的第一公共电极条211起到遮光作用。第一方向为垂直于纸面的方向，图1a中所示的Y方向为第二方向，本实施例不限于此。
如图1a所示，第一遮光部300沿第一方向延伸，并且，第一遮光部300沿Y方向上的尺寸Ls不小于两个第一公共电极条211之间的间隔Li。
例如，两个第一公共电极条211之间的间隔Li在衬底基板100上的正投影落入第一遮光部300在衬底基板100上的正投影内，即在沿垂直于衬底基板100的方向上，第一公共电极条211靠近第二公共电极条212的边缘可以与第一遮光部300靠近该第一公共电极条211的边缘对齐，或者第一公共电极条211与第一遮光部300有交叠，交叠部分沿Y方向的尺寸不超过2μm，本实施例包括但不限于此。需要说明的是，交叠部分的尺寸不能太大而影响正常显示。
例如，由第一公共电极条211与第一遮光部300的关系可知，从衬底基板100背向第一遮光部300的一侧入射的光线不能沿垂直于衬底基板100的方向从显示基板出射，即本实施例提供的第一公共电极条211具有较宽的宽度，可以实现与第一遮光部300的共同作用以形成屏障，使光线在屏障的作用下只能沿着固定的方向射出，从而达到控制光路的目的。
例如，如图1a所示，第一公共电极条211与第一遮光部300共同作用以使像素组2120显示的用于左眼的图像传送向用户的左眼，且使像素组2120显示的用于右眼的图像传送向用户的右眼。
例如，如图1a所示，从衬底基板100背向第一遮光部300的一侧入射的光被第一遮光部300分为两部分，即从背光源(图中未示出)入射到衬底基板100的光只能经由第一遮光部300沿Y方向的左右两侧入射到显示基板内，然后被像素组2120沿Y方向两侧的不透明的第一公共电极条211改变光路，以分别射向用户的左右眼。
例如，由第一遮光部300沿Y方向右侧入射的光线经过第一像素单元210后的出射光线A射向用户的左(右)眼，由第一遮光部300沿Y方向左侧入射的光线经过第二像素单元220后的出射光线B射向用户的右(左)眼，由于第一像素单元210与第二像素单元220分别显示左右眼的图像，并且每个像素单元显示的图像只能进入用户对应的一只眼睛，不能进入另外一只眼睛，因此可以防止图像干扰并实现裸眼3D显示。
例如，如图1a所示，像素组2120还包括与公共电极2110同层设置的像素电极213，像素电极213位于第一公共电极条211与第二公共电极条212之间。需要说明的是，本实施例提供的显示基板为面内转换(In-Plane Switching，IPS)显示模式，例如，可以是高级超维场开关(Advanced-Super Dimensional  Switching，ADS)模式、边缘电场开关(Fringe Field Switching，FFS)模式等。
例如，像素电极的材料可以为透明导电材料，例如可以包括氧化铟锡(ITO)、氧化铟锌(IZO)、氧化锌(ZnO)、氧化铟(In2O3)、氧化铟镓(IGO)中的组合或至少一种，本实施例对此不作限制。
例如，像素电极的材料也可以选用与公共电极相同的材料，从而在一步图案化工艺中完成像素电极与公共电极的制作，可以节省工艺。
例如，如图1a所示，第一公共电极条211从靠近第二公共电极条212向远离第二公共电极条212的方向，第一公共电极条211距衬底基板100的垂直距离逐渐减小，即第一公共电极条211所在平面与衬底基板100所在平面具有倾斜角度。
例如，如图1a所示，第一像素单元210中的第一公共电极条211所在平面和衬底基板100所在平面的倾斜角度(锐角)与第二像素单元220中的第一公共电极条211所在平面和衬底基板100所在平面的倾斜角度(锐角)相同，本实施例包括但不限于此。
例如，如图1a所示，第一公共电极条211面向衬底基板100的一侧为反射面，由第一遮光部300沿Y方向右侧入射的光线经过第一像素单元210中的第一公共电极条211的反射后的出射光线A'射向用户的左(右)眼，由第一遮光部300沿Y方向左侧入射的光线经过第二像素单元220中的第一公共电极条211反射后的出射光线B'射向用户的右(左)眼。由于第一公共电极条211还起到了反射作用，因此可以使得更多的光线经第一公共电极条211进行反射，并通过像素组2120出射以增加显示基板的透过率。另一方面，由于出射光线A'(B')与出射光线A(B)并不在一个方向上，因此，第一公共电极条211的倾斜设计还可以增加显示基板的视角。本实施例提供的显示基板的设计结构可以与一般的TFT-LCD的制作设备兼容以达到在TFT-LCD的基础上实现裸眼3D显示，减少TFT-LCD产线改造成本的目的。
例如，第一公共电极条211不限于倾斜设计，只要从衬底基板100背向第一遮光部300的一侧入射的光线不能沿垂直于衬底基板100的方向从显示基板出射即可。
例如，第一公共电极条211的材料可以选用钛(Ti)、铂(Pt)、金(Au)、铬(Cr)等材料中的一种或几种，本实施例对此不作限制。
例如，第二公共电极条212可以选用与第一公共电极条211相同的不透明 导电材料制成，从而对出射光线A'(B')与出射光线A(B)进行限制，本实施例包括但不限于此。
例如，如图1a所示，像素组2120还包括层间介电层2340，层间介电层2340位于第一遮光部300上。例如，层间介电层2340的截面为梯形，两个不透明的第一公共电极条211分别位于梯形的两个腰上，以实现倾斜设计，本实施例包括但不限于此。
例如，层间介电层2340的截面为等腰梯形，以实现两个第一公共电极条211具有相同的倾斜角度，本实施例包括但不限于此。
例如，层间介电层2340包括彩膜层230(非树脂材料)以及树脂层240，彩膜层230以及树脂层240至少之一的截面为梯形，本实施例以彩膜层230和树脂层240的截面均为梯形为例进行描述，本实施例包括但不限于此，例如，层间介电层还可以包括其他膜层。
例如，两个不透明的第一公共电极条211沿与第一方向垂直的第二方向，即Y方向的尺寸之和占像素组2120沿Y方向的尺寸的比例范围为40％-60％。
例如，两个第一公共电极条211沿Y方向的尺寸之和占像素组2120沿Y方向的尺寸的比例为50％，当两个第一公共电极211之间的间隔在衬底基板100上的正投影与第一遮光部300在衬底基板100上的正投影完全重合时，第一遮光部300沿Y方向的尺寸相当于占像素组2120沿Y方向的尺寸的比例为50％，本实施例包括但不限于此。
例如，图1b为图1a所示的显示基板的部分层结构示意图，如图1b所示，本实施例提供的显示基板还包括栅线500，栅线500沿Y方向延伸，并且第一遮光部300与栅线500位于同一层。
例如，第一遮光部300可以为栅线500同层的公共电极线，本实施例提供的公共电极线(第一遮光部300)具有较宽的宽度，可以实现遮光效果。由该公共电极线形成的第一遮光部可以通过过孔与像素组中的公共电极电连接，本实施例包括但不限于此。
例如，图1c示出了本实施例另一示例提供的显示基板的剖视图，如图1c所示，显示基板还包括数据线400，数据线400沿第一方向延伸，且在沿Y方向上与第一遮光部300之间有间隔，从而使由衬底基板100背向第一遮光部300的一侧入射的光线能够从数据线400与第一遮光部300之间射入像素组。在沿垂直于衬底基板100的方向上，数据线400的靠近第一遮光部300的边缘与第 一公共电极条211的远离第二公共电极条212的边缘对齐或者数据线400和第一公共电极条211有交叠，以使从衬底基板100背向第一遮光部300的一侧入射的光线不能沿垂直于衬底基板100的方向从显示基板出射。
例如，如图1c所示，第一遮光部300与数据线400可以位于同一层。
例如，图1d示出了本实施例另一示例提供的显示基板的剖视图，如图1d所示，第一遮光部300与栅极位于同一层。显示基板还包括第二遮光部600，第二遮光部600与数据线400同层设置，且第二遮光部600在衬底基板100上的正投影落入第一遮光部300在衬底基板100上的正投影内，即第二遮光部600沿第一方向延伸，且第二遮光部600沿Y方向的尺寸不大于第一遮光部300沿Y方向的尺寸Ls。本实施例提供的第二遮光部用于实现进一步的遮光作用，防止入射到第一(二)像素单元对应的彩膜层的光线从第二(一)像素单元射出而发生串扰现象。
例如，第二遮光部600还可以为与源漏极同层设置的公共电极线，本实施例提供的公共电极线(第二遮光部600)具有较宽的宽度，可以实现遮光效果。由该公共电极线形成的第二遮光部可以通过过孔与第一遮光部进行电连接以减小整体公共电极线的电阻。
例如，如图1a-1d所示，每个像素组2120中的两个像素单元210和220相对于第二公共电极212沿第一方向的中心线呈轴对称分布。
在根据本公开实施例的显示基板中，每个像素组中的两个像素单元的像素电极可以独立控制，从而可以为不同的像素单元施加不同的电压，以使两个像素单元分别显示左眼和右眼图像。
实施例二
本实施例提供一种显示基板的制作方法，该显示基板的制作方法的具体步骤如图2所示，包括：
S201：在衬底基板上形成沿第一方向延伸的第一遮光部。
图3a-图6b为本实施例提供的显示基板的制作工艺流程示意图，且本实施例提供的显示基板的制作流程以最终形成如图1d所示的显示基板为例进行描述。
例如，如图3a为显示基板的俯视图，如图3a所示，在衬底基板100上通过成膜、曝光、刻蚀等工艺形成栅线500以及栅极，然后在栅极所在的层上形成沿第一方向延伸的第一遮光部300，这里的第一方向指X方向。
例如，图3b为图3a中沿CC'方向的剖视图，在形成第一遮光部300之后，在第一遮光部300上形成栅极绝缘层110。为了清楚的表示显示基板的俯视图，图3a中没有示出栅极绝缘层110。图3a和图3b示出了在衬底基板100上形成一个第一遮光部300仅仅是示意性的，衬底基板100上可以形成多个相互平行的第一遮光部300。
例如，第一遮光部300可以为栅线同层的公共电极线，本实施例形成的公共电极线(第一遮光部300)具有较宽的宽度，可以实现遮光效果。
例如，如图4a为显示基板的俯视图，如图4a所示，在形成第一遮光部300之后，通过成膜、曝光、刻蚀工艺在栅极绝缘层110上形成薄膜晶体管130中的源漏电极图案、数据线400以及第二遮光部600。在衬底基板上100上形成的数据线400沿X方向延伸，且数据线400在沿与X方向垂直的第二方向，即Y方向上与第一遮光部300之间有间隔。
例如，第二遮光部600在衬底基板100上的正投影落入第一遮光部300在衬底基板100上的正投影内，即第二遮光部600沿X方向延伸，且第二遮光部600沿Y方向的尺寸不大于第一遮光部300沿Y方向的尺寸。本实施例提供的第二遮光部600用于实现进一步的遮光效果。
例如，第二遮光部600可以为与源漏电极同层形成的公共电极线，本实施例形成的公共电极线(第二遮光部600)具有较宽的宽度，可以实现进一步遮光效果。由该公共电极线形成的第二遮光部可以通过过孔与第一遮光部进行电连接以减小整体公共电极线的电阻。
例如，图4b为图4a中沿CC'方向的剖视图，在形成第二遮光部600之后，在第二遮光部600上形成钝化层120。为了清楚的表示显示基板的俯视图，图4a中没有示出钝化层120。
S202：在第一遮光部远离衬底基板的一侧形成像素组，每个像素组包括两个像素单元，每个像素组包括公共电极，公共电极包括沿第一方向延伸的两个不透明的第一公共电极条以及位于两个不透明的第一公共电极条之间的第二公共电极条。
例如，如图5a和图5b的所示，本实施例中形成像素组包括在钝化层120上形成层间介电层2340以及金属连接孔等。例如，层间介电层2340可以包括彩膜层230(非树脂材料)以及树脂层240。例如，层间介电层2340图案化后的截面为梯形，本实施例以彩膜层230和树脂层240的经图案化形成截面均为 梯形的形状为例进行描述，本实施例包括但不限于此。例如，彩膜层230和树脂层240的截面均为等腰梯形，本实施例包括但不限于此。
例如，图5b为图5a中沿CC'方向的剖视图，在形成彩膜层230之后，在彩膜层230上形成树脂层240。为了清楚的表示显示基板的俯视图，图5a中示意性的示出层间介电层2340。
例如，如图6a所示，本实施例中形成像素组包括形成两个像素单元210和220，像素单元210和220组成的像素组包括公共电极，公共电极包括沿X方向延伸，且沿Y排列的两个不透明的第一公共电极条211以及位于两个不透明的第一公共电极条211之间的第二公共电极条212，第一公共电极条211以及第二公共电极条212通过连接部214电连接。需要说明的是，这里的两个像素单元210和220分别具有一个第一公共电极条211，并且共用一个第二公共电极条212。不透明的第一公共电极条211起到遮光作用。
例如，图6b为图6a中沿CC'方向的剖视图，图6a和图6b中在衬底基板100上形成一个像素组仅仅是示意性的，衬底基板100上可以形成多个像素组。
例如，两个不透明的第一公共电极条211分别形成在层间介电层2340的梯形截面的两个腰上以实现倾斜设计，即第一公共电极条211从靠近第二公共电极条212向远离第二公共电极条212的方向，第一公共电极条211距衬底基板100的垂直距离逐渐减小，也就是说，第一公共电极条211所在平面与衬底基板100所在平面具有倾斜角度，本实施例包括但不限于此。
例如，层间介电层2340的截面均为等腰梯形，则第一像素单元210中的第一公共电极条211所在平面和衬底基板100所在平面的倾斜角度(锐角)与第二像素单元220中的第一公共电极条211所在平面和衬底基板100所在平面的倾斜角度(锐角)相同，本实施例包括但不限于此。
例如，第一公共电极条211面向衬底基板100的一侧为反射面，由第一遮光部300沿Y方向右侧入射的光线经过第一像素单元210中的第一公共电极条211的反射后的出射光线射向用户的左(右)眼，由第一遮光部300沿Y方向左侧入射的光线经过第二像素单元220中的第一公共电极条211反射后的出射光线射向用户的右(左)眼。由于第一公共电极条211起到了反射作用，因此可以使得更多的光线经第一公共电极条211进行反射，并通过像素组出射以增加显示基板的透过率。另一方面，第一公共电极条211的倾斜设计还可以增加显示基板的视角。本实施例提供的显示基板的设计结构可以与一般的TFT-LCD 的制作设备兼容以达到在TFT-LCD的基础上实现裸眼3D显示，减少TFT-LCD产线改造成本的目的。
例如，层间介电层2340图案化后的截面也可以不是梯形，即第一公共电极条211不限于倾斜设计，只要从衬底基板100背向第一遮光部300的一侧入射的光线不能沿垂直于衬底基板100的方向从显示基板出射即可。
例如，第二公共电极条212可以选用与第一公共电极条211相同的不透明导电材料制成，从而对出射光路进行限制，本实施例包括但不限于此。
例如，如图6a和图6b所示，两个不透明的第一公共电极条211之间的间隔在衬底基板100上的正投影落入第一遮光部300在衬底基板100上的正投影内，即在沿垂直于衬底基板100的方向上，第一公共电极条211靠近第二公共电极条212的边缘可以与第一遮光部300靠近该第一公共电极条211的边缘对齐，或者第一公共电极条211与第一遮光部300有交叠，交叠部分沿Y方向的尺寸不超过2μm，本实施例包括但不限于此。从衬底基板100背向第一遮光部300的一侧入射的光线不能沿垂直于衬底基板100的方向从显示基板出射，即本实施例提供的第一公共电极条211具有较宽的宽度，可以实现与第一遮光部300的共同作用以形成屏障，使光线在屏障的作用下只能沿着固定的方向射出，从而达到控制光路的目的。
例如，第一公共电极条211与第一遮光部300共同作用以使像素组显示的用于左眼图像的光传送向用户的左眼，且使像素组显示的用于右眼图像的光传送向用户的右眼。
例如，数据线400沿Y方向上与第一遮光部300之间有间隔，从而使由衬底基板100背向第一遮光部300的一侧入射的光线能够从数据线400与第一遮光部300之间射入像素组。在沿垂直于衬底基板100的方向上，数据线400的靠近第一遮光部300的边缘与第一公共电极条211的远离第二公共电极条212的边缘对齐或者数据线400和第一公共电极条211有交叠，以使从衬底基板100背向第一遮光部300的一侧入射的光线不能沿垂直于衬底基板100的方向从显示基板出射。
例如，形成像素组还包括：在公共电极同层形成像素电极213，像素电极213形成在第一公共电极条211与第二公共电极条212之间。需要说明的是，本实施例提供的显示基板为面内转换(In-Plane Switching，IPS)显示模式，例如，可以是高级超维场开关(Advanced-Super Dimensional Switching，ADS) 模式、边缘电场开关(Fringe Field Switching，FFS)模式等。
例如，像素电极的材料可以选用与公共电极相同的材料，从而在一步图案化工艺中完成像素电极与公共电极的制作，可以节省工艺。
实施例三
本实施例提供一种显示装置，该显示装置包括实施例一提供的任一种显示基板，该显示装置中通过第一公共电极条与第一遮光部共同作用以使像素组显示的用于左眼图像的光传送向用户的左眼，且使像素组显示的用于右眼图像的光传送向用户的右眼，从而实现裸眼3D显示效果。
例如，该显示装置可以为液晶显示装置以及包括该显示装置的电视、数码相机、手机、手表、平板电脑、笔记本电脑、导航仪等任何具有显示功能的产品或者部件，本实施例不限于此。
例如，上述液晶显示装置还包括与显示基板相对设置的对向基板，显示基板和对向基板对盒设置以形成液晶盒，液晶层位于显示基板和对向基板之间。
有以下几点需要说明：
(1)除非另作定义，本公开实施例以及附图中，同一标号代表同一含义。
(2)本公开实施例附图中，只涉及到与本公开实施例涉及到的结构，其他结构可参考通常设计。
(3)为了清晰起见，在用于描述本公开的实施例的附图中，层或区域被放大。可以理解，当诸如层、膜、区域或基板之类的元件被称作位于另一元件“上”或“下”时，该元件可以“直接”位于另一元件“上”或“下”，或者可以存在中间元件。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以所述权利要求的保护范围为准。

Claims (16)

  1. 一种显示基板，包括：
    衬底基板；
    多个像素组，位于所述衬底基板上，其中，每个所述像素组包括两个像素单元，每个所述像素组包括公共电极，所述公共电极包括沿第一方向延伸的两个不透明的第一公共电极条，以及位于所述两个不透明的第一公共电极条之间的第二公共电极条；
    第一遮光部，位于所述像素组与所述衬底基板之间，所述第一遮光部沿所述第一方向延伸，
    其中，所述两个不透明的第一公共电极条之间的间隔在所述衬底基板上的正投影落入所述第一遮光部在所述衬底基板上的正投影内。
  2. 根据权利要求1所述的显示基板，其中，从靠近所述第二公共电极条向远离所述第二公共电极条的方向，所述第一公共电极条距所述衬底基板的垂直距离逐渐减小，且所述第一公共电极条面向所述衬底基板的一侧为反射面。
  3. 根据权利要求1或2所述的显示基板，其中，所述像素组包括：
    层间介电层，位于所述第一遮光部上，所述层间介电层的截面为梯形，所述两个不透明的第一公共电极条分别位于所述梯形的两个腰上。
  4. 根据权利要求3所述的显示基板，其中，所述层间介电层包括彩膜层。
  5. 根据权利要求1-4任一项所述的显示基板，其中，所述两个不透明的第一公共电极条沿与所述第一方向垂直的第二方向的尺寸之和占所述像素组沿所述第二方向的尺寸的比例范围为40％-60％，所述第二方向平行于所述衬底基板。
  6. 根据权利要求1-4任一项所述的显示基板，还包括：
    数据线，沿所述第一方向延伸，且在沿与所述第一方向垂直的第二方向上与所述第一遮光部之间有间隔，其中在沿垂直于所述衬底基板的方向上，所述数据线的靠近所述第一遮光部的边缘与所述第一公共电极条的远离所述第二公共电极条的边缘对齐或者所述数据线和所述第一公共电极条有交叠，所述第二方向平行于所述衬底基板。
  7. 根据权利要求6所述的显示基板，其中，所述第一遮光部与所述数据线位于同一层。
  8. 根据权利要求6或7所述的显示基板，还包括：
    栅线，沿所述第二方向延伸，所述第一遮光部与所述栅线位于同一层。
  9. 根据权利要求8所述的显示基板，还包括：
    第二遮光部，与所述数据线同层设置，且所述第二遮光部在所述衬底基板上的正投影落入所述第一遮光部在所述衬底基板上的正投影内。
  10. 根据权利要求9所述的显示基板，其中，所述第一遮光部的材料与所述第二遮光部的材料包括导电材料，且所述第一遮光部与所述第二遮光部电连接，所述第一遮光部与所述公共电极电连接。
  11. 根据权利要求1-10任一项所述的显示基板，其中，所述像素组还包括与所述公共电极同层设置的像素电极，所述像素电极位于所述第一公共电极条与所述第二公共电极条之间。
  12. 根据权利要求1-11任一项所述的显示基板，其中，每个所述像素组中的两个像素单元相对于所述第二公共电极沿所述第一方向的中心线呈轴对称分布。
  13. 一种显示基板的制作方法，包括：
    在衬底基板上形成沿第一方向延伸的第一遮光部；
    在所述第一遮光部远离所述衬底基板的一侧形成像素组，每个所述像素组包括两个像素单元，每个所述像素组包括公共电极，所述公共电极包括沿所述第一方向延伸的两个不透明的第一公共电极条以及位于所述两个不透明的第一公共电极条之间的第二公共电极条，
    其中，所述两个不透明的第一公共电极条之间的间隔在所述衬底基板上的正投影落入所述第一遮光部在所述衬底基板上的正投影内。
  14. 根据权利要求13所述的显示基板的制作方法，其中，形成所述像素组包括：
    在所述第一遮光部上形成层间介电层，所述层间介电层的截面为梯形，
    其中，所述两个不透明的第一公共电极条分别形成在所述梯形的两个腰上。
  15. 根据权利要求13或14所述的显示基板的制作方法，还包括：
    在所述第一遮光部上形成第二遮光部，所述第二遮光部在所述衬底基板上的正投影落入所述第一遮光部在所述衬底基板上的正投影内。
  16. 一种显示装置，包括权利要求1-12任一项所述的显示基板。
PCT/CN2017/107057 2017-04-11 2017-10-20 显示基板及其制作方法、显示装置 WO2018188301A1 (zh)

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