WO2020082966A1 - 盖板及其制备方法、显示装置 - Google Patents

盖板及其制备方法、显示装置 Download PDF

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Publication number
WO2020082966A1
WO2020082966A1 PCT/CN2019/107728 CN2019107728W WO2020082966A1 WO 2020082966 A1 WO2020082966 A1 WO 2020082966A1 CN 2019107728 W CN2019107728 W CN 2019107728W WO 2020082966 A1 WO2020082966 A1 WO 2020082966A1
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WO
WIPO (PCT)
Prior art keywords
electrode
groove
cover plate
color
material layer
Prior art date
Application number
PCT/CN2019/107728
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English (en)
French (fr)
Inventor
张志�
赵雪梅
王庆浦
尹利
Original Assignee
京东方科技集团股份有限公司
合肥鑫晟光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 合肥鑫晟光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/958,584 priority Critical patent/US11269228B2/en
Publication of WO2020082966A1 publication Critical patent/WO2020082966A1/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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/153—Constructional details
    • G02F1/157—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133331—Cover glasses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/153—Constructional details
    • G02F1/1533—Constructional details structural features not otherwise provided for
    • 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/153—Constructional details
    • G02F1/155—Electrodes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—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 an electrochromic effect
    • G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a cover plate, a preparation method thereof, and a display device.
  • the frame is realized by applying inks of different colors on the cover glass.
  • the GG mode touch screen as an example. It consists of a cover glass and a touch screen attached together. Screen ink is printed on the frame around the cover glass.
  • the colors of the cover glass frame are mainly black, white, gold and other single colors, the color is single, and the color difference is not gorgeous enough, there is aesthetic fatigue in appearance, and the bottleneck is obvious in the added value of the product.
  • the purpose of the present disclosure is to provide a cover plate, a preparation method thereof, and a display device.
  • an embodiment of the present disclosure provides a cover plate applied to a display device.
  • the cover plate includes two opposite main surfaces and a side surface connecting the two main surfaces.
  • a groove is formed on the side surface.
  • a color change material layer and a color change control structure for controlling the color change of the color change material layer are provided in the groove.
  • the color-changing material layer is an electrochromic material layer or a cholesteric liquid crystal layer
  • the color-changing control structure controls the color-changing of the color-changing material layer by controlling the change of an applied electric field.
  • the color change control structure includes at least one first electrode and at least one second electrode, the first electrode and the second electrode are spaced apart, and can generate an electric field when different voltages are applied.
  • the cover plate includes a plurality of the side surfaces, and the first electrode and / or the second electrode are disposed in the grooves at the intersection corners of two adjacent side surfaces .
  • the first electrode is provided in the groove at the intersection corner of the first side and the second side, and the recess at the intersection corner of the second side and the third side
  • the groove is provided with the second electrode, and the groove at the corner where the third side and the fourth side meet is provided with the first electrode, the first side and the fourth side
  • the second electrode is disposed in the groove at the corner of the junction.
  • first side and the second side constitute a first side unit
  • third side and the fourth side constitute a second side unit
  • first side unit and the second side unit The first electrode is provided in the groove at one of the intersection corners
  • the second electrode is provided in the groove at the other intersection corner.
  • the first electrode is disposed opposite to the second electrode, and the color-changing material layer is disposed between the first electrode and the second electrode.
  • the two main surfaces are a first main surface and a second main surface, and a light-shielding layer is provided in a peripheral area of the first main surface;
  • the color change control structure further includes a trace for inputting electrical signals to the first electrode and the second electrode, the trace is disposed on the first main surface and is located in the area where the shading layer is located .
  • the cross section of the groove in a direction perpendicular to the extending direction of the side surface on which it is located is an inverted trapezoid
  • the cross section of the groove in a direction perpendicular to the extending direction of the side surface on which it is located is semicircular, and the groove bottom of the groove is curved.
  • an encapsulation layer that encapsulates the color-changing material layer in the groove is provided on the groove.
  • an embodiment of the present disclosure provides a display device, including: a display screen and a cover plate as described above, the cover plate being disposed on a display surface side of the display screen.
  • an embodiment of the present disclosure provides a method for manufacturing a cover plate, which is a method for manufacturing the above-mentioned cover plate provided by an embodiment of the present disclosure, including:
  • the color change control structure is provided in the groove.
  • the cross section of the groove in a direction perpendicular to the extending direction of the side surface on which it is located is an inverted trapezoid
  • the cross section of the groove in a direction perpendicular to the extending direction of the side surface on which it is located is semicircular, and the groove bottom of the groove is curved.
  • the color-changing material is an electrochromic material or a cholesteric liquid crystal material.
  • the discoloration control structure disposed in the groove is: at least one first electrode and at least one second electrode are disposed in the groove, the first electrode is separated from the second electrode Provision is made so that an electric field can be generated when different voltages are applied to the first electrode and the second electrode, and at least a part of the color-changing material layer is provided between the first electrode and the second electrode.
  • the cover plate includes a plurality of sides, and the first electrode and / or the second electrode are disposed in the groove at the intersection corner of two adjacent side surfaces.
  • the preparation method further includes: applying encapsulant on the side surface along the groove to form an encapsulation layer.
  • FIG. 1 shows a front view of a cover plate provided by an embodiment of the present disclosure
  • FIG. 2 shows a front view of a modification of the cover plate provided by an embodiment of the present disclosure
  • Figure 3 shows a cross-sectional view taken along line A-A in Figure 1;
  • FIG. 4 shows a cross-sectional view of the modification along the line A-A in FIG. 1;
  • FIG. 5 shows a front view of a modification of the cover plate provided by the embodiment of the present disclosure
  • FIG. 6 shows a front view of a modification of the cover plate provided by the embodiment of the present disclosure.
  • the embodiments of the present disclosure provide a The cover plate, its preparation method, and display device can obtain a colorful frame, and can realize a narrow frame design, increase the added value of the product, enhance the protection effect of the edge of the cover plate, reduce the risk of damage such as collision and broken screen, and help to achieve thinness and thinness And narrow borders.
  • an embodiment of the present disclosure provides a cover plate 100, which includes two opposite main surfaces (as shown in FIG. 3, the two main surfaces are a first main surface 101 and a second The main surface 102) and the side surface connecting the two main surfaces, a groove 200 is formed on the side surface, and a color-changing material layer 300 is provided in the groove 200, which will produce a color change when the applied parameters change; It is used to control parameter changes, thereby changing the color-changing material layer 300.
  • the cover plate 100 can be applied to a display device.
  • a groove 200 is formed on the side of the cover plate 100, and a color-changing material layer 300 is provided in the groove 200.
  • the color of the color-changing material layer 300 can be controlled by adjusting additional parameters, so that the peripheral area of the cover plate 100 can have a colorful frame.
  • the cover plate 100 is applied to a display device, the display device can obtain a colorful frame, which increases the added value of the display product.
  • the groove 200 is formed on the side of the cover plate 100, it can play a physical role in strengthening the cover plate 100, enhance the edge protection effect of the cover plate 100, and reduce the risk of collision and broken screen.
  • the color-changing material layer 300 is provided in the groove 200 opened on the side of the cover plate 100.
  • the method of additionally adding the color-changing material layer and the electrode layer on the surface of the cover plate in the related art there is no need for an additional surface on the cover plate 100 Add other film layers, so as to achieve the purpose of achieving colorful borders without adding other film layers, it will not increase the thickness of the overall module, which is conducive to thin design, and there is no multi-layer superimposed structure, which avoids The problem of large yield loss caused by the high accuracy of layer stacking structure bonding.
  • the groove 200 is provided on the side of the cover plate 100, the width of the groove 200 can be made very narrow, so the narrow frame design of the cover plate 100 can be realized, and the screen ratio can be improved.
  • the groove 200 provided on the side surface of the cover plate 100 can be realized by CNC edging technology, for example, it is formed by grinding the side surface of the cover plate 100 with a CNC cutter wheel. In this way, the groove 200 with different cross-sectional shapes can be obtained only by changing the shape of the CNC cutter head.
  • the color change control structure can be used to control the applied electric field changes, and the parameters include the electric field.
  • the color-changing material layer 300 contains a material that changes color when the electric field changes, for example, an electrochromic material layer containing an electrochromic material, or a cholesteric liquid crystal layer containing a cholesteric liquid crystal. In this way, the color change control structure can control the color change of the color changing material layer 300 by controlling the change of the applied electric field.
  • Electrochromism refers to the phenomenon that the optical properties (for example, reflectance, transmittance, absorption rate, etc.) of a material undergo stable and reversible changes under the action of an applied electric field, and appear as reversible changes in color and transparency in appearance.
  • Materials with electrochromic properties are called electrochromic materials.
  • the electrochromic material can be selected from polythiophenes and their derivatives, viologens, tetrathiafulvalene, metal phthalocyanine compounds, etc.
  • the unique spiral structure of cholesteric liquid crystal determines its special optical properties, such as selective reflection and circular dichroism.
  • increasing the chiral agent in different proportions can cause the cholesteric liquid crystal to appear different reflected light under the action of an external electric field, so that a full-color reflective display can appear, showing a variety of colors.
  • the color-changing material layer 300 may be formed using an electrochromic material or cholesteric liquid crystal.
  • the color change control structure controls the color change of the electrochromic material or the cholesteric liquid crystal by controlling the change of the applied electric field, and can realize a colorful frame.
  • the electrochromic material or the cholesteric liquid crystal can be directly injected into the groove 200 and sealed after the groove 200 is formed on the side of the cover plate 100 to form a color-changing material layer.
  • the color-changing material layer 300 is formed of an electrochromic material or a cholesteric liquid crystal, but in practical applications, the color-changing material layer 300 may also be formed of other materials, as long as it can be passed through additional parameters Materials that change to achieve color change can be applied here.
  • the color changing material layer 300 may also be a photochromic material layer containing a photochromic material.
  • Photochromic material refers to a type of material that can change color after being excited by a light source.
  • the color change control structure is a light source brightness control structure capable of controlling additional light source parameters (the parameters include light source parameters, such as light source brightness, etc.), thereby adjusting the color of the photochromic material to achieve a colorful border.
  • the color-changing material layer 300 may also be a temperature-sensitive color-changing material layer containing a temperature-sensitive color-changing material.
  • Temperature-sensitive color-changing material refers to a type of material that can control the change of color by using temperature difference.
  • the color change control structure is a temperature control structure capable of controlling the applied temperature change, thereby adjusting the color of the temperature-sensitive color changing material and realizing the colorful frame.
  • the color change control structure includes at least one first electrode 510 and at least one second electrode 520, and the first electrode 510 and the second electrode 520 are disposed apart so that an electric field can be generated when different voltages are applied. At least a part of the color-changing material layer 300 is disposed between the first electrode 510 and the second electrode 520.
  • the first electrode 510 and the second electrode 520 may be located at opposite ends of one side of the cover plate 100 and oppositely disposed, and the color-changing material layer 300 is disposed on the first electrode 510 and the second Between electrodes 520.
  • At least one first electrode 510 and at least one second electrode 520 can be directly assembled in the groove 200 after filling the groove 200 with an electrochromic material or cholesteric liquid crystal. In this way, the process is simple.
  • the first electrode 510 and the second electrode 520 that are spaced apart can be supplied with power to control the voltage change through a module printed circuit board (PCB), etc., and the first electrode 510 and the second electrode that are spaced apart An electric field is generated between 520.
  • At least a portion of the color-changing material layer 300 is disposed between the first electrode 510 and the second electrode 520 that are spaced apart, so that the color change of the color-changing material layer 300 can be controlled by changes in the electric field, and the colorful frame of the display cover 100 can be realized.
  • neither the first electrode 510 and the second electrode 520, nor the color-changing material layer 300 are superimposed on the surface of the cover plate 100, which does not increase the thickness of the cover plate 100, and is easy to implement in the process.
  • first electrode 510 and the second electrode 520 may be sheet electrodes.
  • the arrangement direction of the first electrode 510 and the second electrode 520 in the groove 200 may be such that the sheet electrode is perpendicular to the main surface of the cover plate 100, so that the first One electrode 510 and the second electrode 520 can face each other to generate an electric field.
  • the color change control structure may also use other methods to control the applied electric field, which is not limited.
  • the cover plate 100 includes a plurality of sides, and the first electrode 510 and / or the second electrode 520 are provided in the grooves at the intersection corners of two adjacent sides 200.
  • the first electrode 510 and the second electrode 520 are provided in the groove 200 at the intersection corner of the two adjacent side surfaces of the cover plate 100, so that A color-changing material layer 300 is provided between the two ends, so that the color of each side can be controlled by the changes in the electric field generated by the first electrode 510 and the second electrode 520 located at the two ends.
  • the positions of the first electrode and the second electrode are not limited to this, and other methods may also be used.
  • the first electrode and / or the second electrode may be provided in the middle of a certain side surface or all side surfaces. In this way, on the side where the first electrode and / or the second electrode are provided in the middle, the portion between the first electrode and the second electrode that are opposed and spaced apart can be regarded as a section, so that the same side can be controlled in segments to change the color .
  • the cover plate 100 is rectangular and has four sides, including a first side 110, a second side 120, a third side 130, and a fourth side 140 that are connected end to end .
  • the first electrode 510 is provided in the groove 200 at the intersection corner of the first side 110 and the second side 120
  • the second electrode is provided in the groove 200 at the intersection corner of the second side 120 and the third side 130 520
  • a first electrode 510 is provided in the groove 200 at the corner where the third side 130 and the fourth side 140 meet
  • a second electrode is provided in the groove 200 at the corner where the first side 110 and the fourth side 140 meet 520.
  • the first electrode 510 and the second electrode 520 can be provided on the four corners of the cover plate 100, respectively.
  • the first electrode 510 and the second electrode 520 are respectively provided on the four corners of the cover plate 100, and different electric signals are applied to the first electrode 510 and the second electrode 520 respectively to form an electric field, thereby enabling Control the border color of each side. For example, as shown in FIG.
  • a positive voltage is applied to the first electrode 510 at the intersection of the first side 110 and the second side 120, and the second electrode 520 at the intersection of the second side 120 and the third side 130 Apply a negative voltage on the first electrode 510 at the corner of the intersection of the third side 130 and the fourth side 140, apply a positive voltage on the second electrode 520 at the corner of the intersection of the first side 110 and the fourth side 140 Negative voltage, which forms an electric field to control the color changes of the four sides.
  • an electric field can be generated between the first electrode and the second electrode provided at both ends of each side.
  • the first electrode and the second electrode may be sheet electrodes.
  • the specific arrangement of the first electrode and the second electrode may be: the sheet electrode is arranged in the groove perpendicular to the main surface of the cover plate, and the cover plate
  • the electrodes provided on the four corners may be one or two.
  • each electrode when the number of the first electrode or the second electrode provided on each of the four corners of the cover plate is one, each electrode may be at an oblique angle to the extending direction of the side surface, and The main surface of the cover plate is arranged in the groove in a manner perpendicular to each other.
  • the first electrode and the second electrode may be parallel to each other, or of course, may be non-parallel, as long as an electric field can be generated between the first electrode and the second electrode that are spaced apart.
  • the first electrode 510 at the corner of the intersection of the first side 110 and the second side 120 is perpendicular to the main surface of the cover plate 100, and between the extending direction of the first electrode 510 and the first side 110 At an oblique angle.
  • the second electrode 520 at the corner where the second side 120 and the third side 130 meet is perpendicular to the main surface of the cover plate 100, and the second electrode 520 and the second side 120 extend at an oblique angle.
  • the first electrode 510 disposed between the third side 130 and the fourth side 140 is perpendicular to the main surface of the cover plate 100, and the first electrode 510 and the third side 130 extend at an oblique angle between the extending directions.
  • the second electrode 520 at the corner of the intersection of 140 and the first side 110 is perpendicular to the main surface of the cover plate 100 and forms an oblique angle with the first side 110, and the first electrode 510 and the second electrode 520 are parallel.
  • the two electrodes on each corner are perpendicular to the main surface of the cover plate Set, and the two electrodes are set perpendicular to each other.
  • one electrode is perpendicular to the direction of extension of one of the two sides intersecting the corner
  • the other electrode is perpendicular to the other of the two sides intersecting the corner
  • the lateral extension direction is vertical.
  • two first electrodes 510 are perpendicular to the main surface of the cover plate 100, and one of the first electrodes 510 is connected to the first side
  • the extending direction of 110 is perpendicular
  • the other first electrode 510 is perpendicular to the extending direction of the second side 120.
  • second electrodes 520 there are two second electrodes 520 disposed in the groove 200 at the intersection corner of the second side 120 and the third side 130, and one of the second electrodes 520 is perpendicular to the extending direction of the second side 120, and A second electrode 520 is perpendicular to the extending direction of the third side 130.
  • Two first electrodes 510 are provided in the groove 200 at the corner where the third side 130 and the fourth side 140 meet, and one of the first electrodes 510 is perpendicular to the extending direction of the third side 130 and the other first electrode 510 It is perpendicular to the extending direction of the fourth side 140.
  • Two second electrodes 520 are provided in the groove 200 at the corner where the fourth side 140 meets the first side 110, one of the second electrodes 520 is perpendicular to the extending direction of the first side 110, and the other second electrode 520 is The extending direction of the fourth side 140 is perpendicular.
  • At least two adjacent side surfaces are a side unit, and a first electrode and a second electrode are respectively provided at the two ends of each side unit.
  • each side of each side unit can change color under the action of the electric field generated by the same pair of first electrodes and second electrodes, so that the purpose of simultaneously controlling the side colors of at least two sides can be achieved.
  • the cover plate 100 is rectangular and has four sides, including a first side 110, a second side 120, a third side 130, and a fourth side 140 that are connected end to end.
  • the first side 110 and the second side 120 constitute a first side unit
  • the third side 130 and the fourth side 140 constitute a second side unit.
  • the first electrode 510 is provided in the groove 200 at the intersection corner of the first side unit and the second side unit (the intersection corner of the first side 110 and the fourth side 140), and at the other intersection corner (the first At the corner 200 where the second side 120 and the third side 130 meet at the corner), a second electrode 520 is provided.
  • the first electrode 510 and the second electrode 520 are respectively provided at the two ends of the diagonal of the cover plate 100, and different electric signals are applied to the first electrode 510 and the second electrode 520 respectively to form an electric field To control the border color change.
  • a positive voltage is applied to the first electrode 510 at the intersection corner of the first side 110 and the fourth side 140, and the second electrode at the intersection corner of the second side 120 and the third side 130
  • a negative voltage is applied to 520 to form an electric field to control the color change of each side separately.
  • an electric field may be generated between the first electrode and the second electrode.
  • the first electrode and the second electrode may be sheet electrodes.
  • the specific arrangement of the first electrode and the second electrode may be: the sheet electrode is arranged in the groove perpendicular to the main surface of the cover plate, and the cover plate There may be one or two electrodes provided at both ends of the diagonal.
  • each electrode may be at an oblique angle to the extending direction of the side surface, and The cover plate is arranged vertically in the groove.
  • the first electrode and the second electrode may be parallel to each other, or of course, may be non-parallel, as long as an electric field can be generated between the first electrode and the second electrode that are spaced apart.
  • the first electrode 510 at the corner of the intersection of the first side 110 and the fourth side 140 has an oblique angle between the extending direction of the first side 110, and the second side 120 and the third
  • the second electrode 520 at the intersection corner of the side 130 and the second side 120 form an oblique angle, and the first electrode 510 and the second electrode 520 are parallel.
  • the two electrodes provided on each end are perpendicular to the main surface of the cover plate , And the two electrodes are arranged perpendicular to each other.
  • one electrode is perpendicular to the extension direction of one of the two intersecting sides, and the other electrode is perpendicular to the other side of the two intersecting sides.
  • two first electrodes 510 are provided in the groove 200 at the corner where the fourth side 140 meets the first side 110, and one of the first electrodes 510 is perpendicular to the extending direction of the first side 110 The other first electrode 510 is perpendicular to the extending direction of the fourth side 140.
  • two second electrodes 520 are provided in the groove 200 at the corner where the second side 120 and the third side 130 meet, and one of the second electrodes 520 is perpendicular to the extending direction of the second side 120 and the other The two electrodes 520 are perpendicular to the extending direction of the third side 130.
  • the first electrode and the second electrode may be electrically connected to the driving circuit board of the display module, thereby applying an electrical signal to each of the first electrode and the second electrode.
  • the first electrode and the second electrode can be connected to the driving circuit board by wiring on the cover plate.
  • the cover plate 100 includes a first main surface 101 and a second main surface 102 opposite to each other, and a light shielding layer is provided in a peripheral area of the first main surface 101.
  • the color change control structure further includes a trace (not shown in the figure) for inputting electrical signals to the first electrode 510 and the second electrode 520.
  • the trace is disposed on the first main surface 101 and is located in the area where the light shielding layer is located.
  • a light-shielding layer is provided around the cover plate 100, and the light-shielding layer is located in a non-display area of the display device, and wiring is arranged in the area where the light-shielding layer is located, so that the wiring does not affect the display area.
  • the purpose of connecting the first electrode 510 and the second electrode 520 to the driving circuit board of the display module is achieved.
  • first electrode 510 and the second electrode 520 may also use other methods to apply electrical signals, which is not limited, and the routing method is not limited to this.
  • the groove 200 may be formed on the side of the cover plate 100 by CNC edging technology.
  • the shape of the groove 200 can be changed by changing the CNC cutter head.
  • the cross-sectional shape of the groove 200 in the direction perpendicular to the extending direction of the side surface on which it is located may be various shapes such as a rectangle, an inverted trapezoid, and a semicircle.
  • the cross-sectional shape of the groove 200 in a direction perpendicular to the extending direction of the side surface on which it is located is an inverted trapezoid.
  • the inverted trapezoid includes an upper bottom edge and a lower bottom edge, and the length of the upper bottom edge is greater than the length of the lower bottom edge.
  • the upper bottom edge is the notch end of the groove 200 and is located on the side, and the lower bottom edge is the groove of the groove 200 Bottom end.
  • the cross-sectional shape of the groove 200 is an inverted trapezoid, so that the notch end of the groove 200 is wider than the bottom end of the groove. In this way, it is possible to make the edge of the cover plate 100 between the side wall of the groove 200 and the first and second main surfaces of the cover plate 100 from the side close to the notch end of the groove 200 to close to the concave On one side of the bottom end of the groove 200, the thickness gradually increases, which further ensures the physical strength of the edge of the cover plate 100 and is not likely to cause edge damage.
  • the cross-sectional shape of the groove 200 in the direction perpendicular to the extending direction of the side surface on which it is located is semicircular.
  • the semi-circle includes an arc portion and a straight portion.
  • the straight portion is located on the side and is the notch end of the groove 200, and the arc portion is the bottom end of the groove 200, that is, the bottom of the groove 200 is curved.
  • the cross-sectional shape of the groove 200 is a semicircle, and the straight part of the semicircle is located on the side, and the arc part is located at the bottom end of the groove 200, so that the notch end of the groove 200 is compared with It is wider at the bottom of the tank.
  • the edge of the cover plate 100 between the side wall of the groove 200 and the first and second main surfaces of the cover plate 100 from the side close to the notch end of the groove 200 to close to the concave
  • the thickness gradually increases, which further ensures the physical strength of the edge of the cover plate 100 and is not likely to cause edge damage.
  • the shape of the groove 200 may also adopt other shapes, which is not limited thereto.
  • an encapsulation layer 600 that encapsulates the color-changing material layer 300 in the groove 200 may be provided outside the groove 200.
  • the encapsulation layer 600 is used to encapsulate the color-changing material layer 300 in the groove 200, thereby achieving sealing and protection.
  • the embodiments of the present disclosure also provide a simple preparation method of the cover plate, including:
  • a color change control structure is provided in the groove 200.
  • the above preparation method further includes: coating encapsulant on the outside of the groove to form an encapsulation layer.
  • the above-mentioned cover plate 100 provided by the embodiment of the present disclosure can be manufactured by the following steps.
  • the cover plate 100 is cleaned.
  • the side surface of the cover plate 100 is ground to form the groove 200.
  • a color-changing material such as a cholesteric liquid crystal or an electrochromic material is poured into the groove 200 to form a color-changing material layer 300.
  • the first electrode 510 and the second electrode 520 are disposed in the groove 200 of the cover plate 100, and the wiring is routed on the first main surface of the cover plate 100.
  • a layer of encapsulant is applied along the groove 200 through the glue head to form an encapsulation layer 600, so as to seal and protect the color-changing material layer 300 and the electrode in the groove 200.
  • Embodiments of the present disclosure also provide a cover plate, which can be applied to a display device.
  • the cover plate is formed using the cover plate provided by the embodiment of the present disclosure.
  • the cover plate is used in a display device and can be arranged on the display surface side of the display screen, so that the display device obtains a colorful frame without increasing the overall thickness of the display device, reduces the risk of collision and broken screen, and realizes a narrow frame design To increase the screen ratio.
  • an embodiment of the present disclosure also provides a display device, including: a display screen and a cover plate provided by the embodiment of the present disclosure, the cover plate being disposed on the display surface side of the display screen.
  • the cover plate includes a first surface and a second surface that are opposite to each other, and the first surface is disposed facing the display surface of the display screen.
  • the display device includes a display area and a non-display area, and the color-changing material layer and the color-change control structure are located in the non-display area.
  • the color-changing material layer and the color-changing control structure on the cover plate are both located in the non-display area.
  • the cover plate and the display device provided by the embodiment of the present disclosure can also bring all the beneficial effects brought by the cover plate provided by the embodiment of the present disclosure, which will not be repeated here.
  • the display device may further include a driving circuit board for driving the display screen, and the first electrode and the second electrode are electrically connected to the driving circuit board.
  • the electrical signals applied to the first electrode and the second electrode are controlled by the driving circuit board of the display screen, so that the color change of the frame can be controlled.
  • the display device provided by the embodiment of the present disclosure may be a touch display device, which may further include a touch screen, and the touch screen is disposed between the display screen and the cover. It should be understood that the display device provided by the embodiments of the present disclosure may also be a non-touch display device.

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Abstract

本公开提供一种盖板及其制备方法、及显示装置。本公开提供的盖板，其应用于显示装置，所述盖板包括相对的两个主表面和连接两个主表面的侧面，在所述侧面开设有凹槽，所述凹槽内设置有变色材料层、及用于控制所述变色材料层变色的变色控制结构。

Description

盖板及其制备方法、显示装置
相关申请的交叉引用
本申请主张在2018年10月24日在中国提交的中国专利申请号No.201821752840.3的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及显示技术领域，尤其涉及一种盖板及其制备方法、及显示装置。
背景技术
随着显示和触控技术的发展，各种颜色的边框越来越被广大消费者喜爱。传统的手机和触控笔记本等显示产品中，其边框是由不同颜色的油墨涂覆在盖板玻璃上而实现的。以GG模式的触控屏为例，它是由盖板玻璃和触控屏贴合在一起，在盖板玻璃的四周边框网印上彩色油墨。但是，相关技术中盖板玻璃边框的颜色主要有黑、白、金等单色，颜色单一，且色差不够绚烂，在美观上存在审美疲劳，在产品附加值上瓶颈明显。
为了实现色彩更为绚烂的炫彩边框，在相关技术中也有在盖板玻璃与触控屏贴合的一面的边框处设置电极层和变色材料层的方式。
发明内容
本公开的目的在于提供一种盖板及其制备方法、及显示装置。
本公开所提供的技术方案如下。
第一方面，本公开实施例提供一种盖板，其应用于显示装置，所述盖板包括相对的两个主表面和连接两个主表面的侧面，在所述侧面开设有凹槽，所述凹槽内设置有变色材料层、及用于控制所述变色材料层变色的变色控制结构。
在一个示例中，所述变色材料层为电致变色材料层、或者胆甾相液晶层，所述变色控制结构通过控制外加电场变化来控制所述变色材料层变色。
在一个示例中，所述变色控制结构包括至少一个第一电极和至少一个第二电极，所述第一电极与所述第二电极相隔设置，在被施加有不同电压时能够产生电场。
在一个示例中，所述盖板包括多个所述侧面，所述第一电极和/或所述第二电极设置在相邻接的两个所述侧面的交接拐角处的所述凹槽中。
在一个示例中，所述侧面有四个，包括首尾依次连接的第一侧面、第二侧面、第三侧面和第四侧面；
其中，所述第一侧面和所述第二侧面的交接拐角处的所述凹槽中设置有所述第一电极，所述第二侧面与所述第三侧面的交接拐角处的所述凹槽中设置有所述第二电极，所述第三侧面与所述第四侧面的交接拐角处的所述凹槽中设置有所述第一电极，所述第一侧面与所述第四侧面的交接拐角处的所述凹槽中设置有所述第二电极。
在一个示例中，所述侧面有四个，包括首尾依次连接的第一侧面、第二侧面、第三侧面和第四侧面；
其中，所述第一侧面和所述第二侧面组成第一侧面单元，所述第三侧面和所述第四侧面组成第二侧面单元，在所述第一侧面单元与所述第二侧面单元的一个交接拐角处的所述凹槽中设置有所述第一电极，在另一个交接拐角处的所述凹槽中设置有所述第二电极。
在一个示例中，所述第一电极与所述第二电极相对设置，所述变色材料层设置在所述第一电极与所述第二电极之间。
在一个示例中，所述两个主表面为第一主表面和第二主表面，在所述第一主表面的周边区域设置有遮光层；
所述变色控制结构还包括用于向所述第一电极和所述第二电极输入电信号的走线，所述走线布设于所述第一主表面上，并位于所述遮光层所在区域。
在一个示例中，所述凹槽在与其所在的所述侧面的延伸方向垂直的方向上的截面为倒梯形；
或者，所述凹槽在与其所在的所述侧面的延伸方向垂直的方向上的截面为半圆形，且所述凹槽的槽底为曲面状。
在一个示例中，在所述凹槽上设有将所述变色材料层封装于所述凹槽内 的封装层。
第二方面，本公开实施例提供一种显示装置，包括：显示屏及如上所述的盖板，所述盖板设置于所述显示屏的显示面一侧。
第三方面，本公开实施例提供一种盖板的制备方法，其为制造本公开实施例提供的上述盖板的方法，包括：
对所述盖板的所述侧面进行研磨，形成凹槽；
将变色材料注入所述凹槽内，形成所述变色材料层；以及
在所述凹槽内设置所述变色控制结构。
在一个示例中，所述凹槽在与其所在的所述侧面的延伸方向垂直的方向上的截面为倒梯形；
或者，所述凹槽在与其所在的所述侧面的延伸方向垂直的方向上的截面为半圆形，且所述凹槽的槽底为曲面状。
在一个示例中，所述变色材料为电致变色材料、或者胆甾相液晶材料。
在一个示例中，在所述凹槽内设置所述变色控制结构为：在所述凹槽内设置至少一个第一电极和至少一个第二电极，所述第一电极与所述第二电极相隔设置，从而在对第一电极和第二电极施加不同电压时能够产生电场，所述变色材料层的至少一部分设置在所述第一电极与所述第二电极之间。
在一个示例中，所述盖板包括多个侧面，所述第一电极和/或所述第二电极设置在相邻接的两个所述侧面的交接拐角处的所述凹槽中。
在一个示例中，所述制备方法还包括：在所述侧面沿所述凹槽涂覆封装胶，形成封装层。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例描述中所需要使用的附图作简单地介绍。显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获取其他的附图。
图1表示本公开实施例提供的盖板的主视图；
图2表示本公开实施例提供的盖板的变形例的主视图；
图3表示图1中A-A向的剖视图；
图4表示图1中A-A向的变形例的剖视图；
图5表示本公开实施例提供的盖板的变形例的主视图；
图6表示本公开实施例提供的盖板的变形例的主视图。
具体实施方式
下面结合附图，对本公开实施例中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。基于本公开实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获取的所有其他实施例，都属于本公开的保护范围。
在相关技术中，为了实现色彩更为绚烂的炫彩边框，有在盖板玻璃与触控屏贴合的一面的边框处设置电极层和变色材料层的方式。但是，这种多层叠加结构的方式需要在盖板玻璃上增加额外的电极层及变色材料层。这种方式由于膜层厚度及工艺限制而存在以下问题：多层叠加结构对贴合精度要求高，良率损失大；并且，多层叠加结构会显著增加整体模组的厚度，不利于实现超薄化；此外，为了实现变色边框，多层叠加结构的边框的宽度较宽，不利于实现超窄边框及高屏占比。
针对相关技术的显示装置中，在盖板玻璃边框处设置多层叠加结构来实现炫彩边框时，良率损失大、不利于轻薄化和窄边框化的技术问题，本公开实施例提供一种盖板及其制备方法、及显示装置，能够获得炫彩边框，且能够实现窄边框设计，提高产品附加值，增强盖板边缘的保护效果，降低碰撞碎屏等损坏风险，有利于实现轻薄化和窄边框化。
如图1至图6所示，本公开实施例提供一种盖板100，盖板100包括相对的两个主表面(如图3所示，两个主表面为第一主表面101和第二主表面102)和连接两个主表面的侧面，在该侧面上开设有凹槽200，凹槽200内设置有变色材料层300，其在外加参数变化时会产生颜色变化；以及变色控制结构，其用于控制参数变化，从而使变色材料层300变色。
在本实施例中，盖板100可应用于显示装置中，在盖板100的侧面上开设凹槽200，并在凹槽200内设置变色材料层300，该变色材料层300在外加 参数变化时会产生颜色变化。这样，能够通过调节外加参数，控制变色材料层300的颜色，能够使得盖板100的周边区域具有炫彩边框。当该盖板100应用于显示装置中时，显示装置可获得炫彩边框，提高显示产品附加值。另外，由于在盖板100的侧面上开设凹槽200，能够起到对盖板100的物理强化作用，增强盖板100的边缘保护效果，降低碰撞碎屏风险。此外，在盖板100的侧面开设的凹槽200内设置变色材料层300，与相关技术中在盖板表面上额外增加变色材料层及电极层的方式相比，不需要在盖板100表面额外增加其他膜层，从而达到在不增加其他膜层的状况下实现炫彩边框的目的，不会增加整体模组的厚度，有利于薄型化设计，且不存在多层叠加结构，避免了由于多层叠加结构贴合精度高所造成的良率损失大的问题。此外，由于在盖板100的侧面设置凹槽200，凹槽200的宽度工艺上可以做的很窄，因此可实现盖板100窄边框设计，提高屏占比。
本实施例中，盖板100的侧面上所设置的凹槽200，可以通过CNC磨边技术来实现，例如，利用CNC刀轮将盖板100的侧面进行研磨而形成。这样，只需改变CNC刀头的外形，即可得到不同横截面形状的凹槽200。
在一个实施例中，变色控制结构可以用于控制外加电场变化，所述参数包括电场。变色材料层300包含在电场变化时产生颜色变化的材料，例如为包含电致变色材料的电致变色材料层、或者为包含胆甾相液晶的胆甾相液晶层。这样，变色控制结构可以通过控制外加电场变化来控制变色材料层300变色。
电致变色是指材料的光学属性(例如，反射率、透过率、吸收率等)在外加电场的作用下发生稳定、可逆的变化的现象，在外观上表现为颜色和透明度的可逆变化。具有电致变色性能的材料，即称为电致变色材料。典型地，电致变色材料可选用聚噻吩类及其衍生物、紫罗精类、四硫富瓦烯、金属酞菁类化合物等。
胆甾相液晶的独特螺旋结构决定了其特殊的光学性能，如选择性反射、圆二色性等。此外，按照不同比例增加手性剂，可以使胆甾相液晶在外加电场作用下，出现不同的反射光，从而可以出现全色域的反射式显示，呈现多种颜色。
因此，在本实施例中，变色材料层300可采用电致变色材料、或者胆甾相液晶形成。这样，变色控制结构通过控制外加电场变化来控制电致变色材料或者胆甾相液晶变色，能够实现炫彩边框。其中，电致变色材料或者胆甾相液晶，可以在盖板100的侧面上开设凹槽200之后，直接注入至凹槽200内并密封，形成变色材料层。
需要说明的是，在本实施例中，变色材料层300选用电致变色材料或者胆甾相液晶形成，但在实际应用中，变色材料层300也可以选用其他材料来形成，只要能够通过外加参数变化来实现变色的材料均可应用于此。
例如，变色材料层300还可以为包含光致变色材料的光致变色材料层。光致变色材料是指受到光源激发后能够发生颜色变化的一类材料。此时，变色控制结构为能够控制外加光源参数(所述参数包括光源参数，如，光源亮度等)的光源亮度控制结构，从而调节光致变色材料的颜色，实现炫彩边框。
或者，变色材料层300还可以为包含温感变色材料的温感变色材料层。温感变色材料是指可利用温度的差异来控制颜色的改变的一类材料。此时，变色控制结构为能够控制外加温度变化的温度控制结构，从而调节温感变色材料的颜色，实现炫彩边框。
还需要说明的是，采用电致光学材料或者胆甾相液晶并通过外加电场来实现边框颜色变化的方式，相较于其他方式来说，电场的控制相对更加容易实现，且结构也更为简单。
在本实施例中，变色控制结构包括至少一个第一电极510和至少一个第二电极520，第一电极510与第二电极520相隔设置，从而在被施加有不同电压时能够产生电场。变色材料层300的至少一部分设置在第一电极510与第二电极520之间。
其中一种实施方式中，如图1所示，第一电极510与第二电极520可以位于盖板100的一个侧面的两端并相对设置，变色材料层300设置在第一电极510与第二电极520之间。
在本实施例中，至少一个第一电极510和至少一个第二电极520可以在凹槽200内灌入电致变色材料或者胆甾相液晶之后，直接组装于凹槽200内。这样，工艺制程简单。
在本实施例中，可以通过模组印刷电路板(PCB板)等向相隔设置的第一电极510和第二电极520供电并控制电压变化，能够在相隔设置的第一电极510与第二电极520之间产生电场。变色材料层300的至少一部分设置于相隔设置的第一电极510与第二电极520之间，从而能够利用电场变化来控制变色材料层300的颜色变化，实现显示盖板100的炫彩边框。并且，第一电极510和第二电极520、以及变色材料层300均不叠加在盖板100的表面，不会造成盖板100厚度增加，且工艺上容易实现。
需要说明的是，第一电极510和第二电极520可以为片状电极。第一电极510和第二电极520为片状电极时，第一电极510和第二电极520在凹槽200内的设置方向可以是片状电极与盖板100的主表面相垂直，以使得第一电极510与第二电极520之间能够相对而产生电场。应当理解的是，在其他实施例中，变色控制结构也可以利用其他方式来实现对外加电场的控制，对此并不进行限定。
以下示例性的说明本公开实施例提供的盖板的两种变形例。
在一个实施例中，如图1和图2所示，盖板100包括多个侧面，第一电极510和/或第二电极520设置在相邻接的两个侧面的交接拐角处的凹槽200中。
在本实施例中，在盖板100的相邻接的两个侧面的交接拐角处的凹槽200中设置第一电极510和第二电极520，如此，能够在盖板100的每一侧面的两端之间设置变色材料层300，从而能够使每一侧面的颜色由位于其两端的第一电极510和第二电极520所产生的电场变化来控制。
应当理解的是，在实际应用中，第一电极和第二电极的设置位置不仅局限于此，还可以采用其他方式。例如，还可以在某一个侧面或者全部侧面的中部设置第一电极和/或第二电极。这样，在中部设置有第一电极和/或第二电极的侧面中，相对且相隔设置的第一电极和第二电极之间的部分可视为一段，从而能够实现同一侧面分段控制颜色变化。
在本实施例中，如图1和图2所示，盖板100为矩形，有四个侧面，包括首尾依次连接的第一侧面110、第二侧面120、第三侧面130和第四侧面140。其中，第一侧面110和第二侧面120的交接拐角处的凹槽200中设置有 第一电极510，第二侧面120与第三侧面130的交接拐角处的凹槽200中设置有第二电极520，第三侧面130与第四侧面140的交接拐角处的凹槽200中设置有第一电极510，第一侧面110与第四侧面140的交接拐角处的凹槽200中设置有第二电极520。由此，可以在盖板100的四个角上分别设置第一电极510和第二电极520。
在本实施例中，通过在盖板100的四个角上分别设置第一电极510和第二电极520，在第一电极510和第二电极520上分别施加不同电信号来形成电场，从而能够控制各侧面的边框颜色。例如，图1所示，在第一侧面110和第二侧面120的交接拐角处的第一电极510上施加正电压，在第二侧面120与第三侧面130的交接拐角处的第二电极520上施加负电压，在第三侧面130与第四侧面140的交接拐角处的第一电极510上施加正电压，在第一侧面110与第四侧面140的交接拐角处的第二电极520上施加负电压，从而形成电场来分别控制四个侧面的颜色变化。
需要说明的是，在本实施例中，各侧面的两端所设置的第一电极和第二电极之间可产生电场。第一电极和第二电极可以为片状电极，第一电极和第二电极的具体设置方式可以是：将片状电极与盖板的主表面相垂直地设置在凹槽内，且盖板的四个角上所设置的电极可以是一个或者两个。
在一个示例中，当盖板的四个角中每一角上所设置的第一电极或第二电极的数量为一个时，各电极可以是与侧面的延伸方向之间呈斜夹角、且与盖板的主表面相垂直的方式设置在凹槽内。示例性地，第一电极和第二电极可以相互平行，当然也可以不平行，只要能够使得相隔设置的第一电极和第二电极之间产生电场即可。
例如，如图2所示，第一侧面110和第二侧面120的交接拐角处的第一电极510与盖板100的主表面垂直，且第一电极510与第一侧面110的延伸方向之间呈斜夹角。同样地，第二侧面120与第三侧面130的交接拐角处的第二电极520与盖板100的主表面垂直，且第二电极520与第二侧面120的延伸方向之间呈斜夹角，第三侧面130与第四侧面140之间所设置的第一电极510与盖板100的主表面垂直，且第一电极510与第三侧面130的延伸方向之间呈斜夹角，第四侧面140与第一侧面110的交接拐角处的第二电极520 与盖板100的主表面垂直，并与第一侧面110之间呈斜夹角，且第一电极510与第二电极520平行。
在另一个示例中，当盖板的四个角中每一角上所设置的第一电极或第二电极的数量为两个时，每个角上的两个电极均垂直于盖板的主表面设置，且两个电极之间相互垂直设置。每个角上所设置的两个电极中，一个电极与该角所在的相交的两个侧面中的一个侧面的延伸方向垂直，另一个电极与该角所在的相交的两个侧面中的另一个侧面的延伸方向垂直。
例如，如图1所示，在第一侧面110和第二侧面120的交接拐角处，两个第一电极510均与盖板100的主表面垂直，且其中一个第一电极510与第一侧面110的延伸方向垂直，另一第一电极510与第二侧面120的延伸方向垂直。
同样地，设置在第二侧面120与第三侧面130的交接拐角处的凹槽200中的第二电极520有两个，且其中一个第二电极520与第二侧面120的延伸方向垂直，另一第二电极520与第三侧面130的延伸方向垂直。
在第三侧面130与第四侧140的交接拐角处的凹槽200中设置两个第一电极510，且其中一个第一电极510与第三侧面130的延伸方向垂直，另一第一电极510与第四侧面140的延伸方向垂直。
在第四侧面140与第一侧面110的交接拐角处的凹槽200中设置两个第二电极520，其中一个第二电极520与第一侧面110的延伸方向垂直，另一第二电极520与第四侧面140的延伸方向垂直。
在另一个实施例中，如图5和图6所示，相邻接的至少两个侧面为一个侧面单元，在每一侧面单元的两端位置分别设置第一电极和第二电极。
在本实施例中，通过在每一侧面单元的两端位置分别设置第一电极和第二电极，并向每一侧面单元的两端位置上的第一电极和第二电极分别施加不同电信号，能够使每一侧面单元中各侧面在同一对第一电极和第二电极产生的电场作用下发生变色，从而能够实现对至少两个侧面的侧面颜色同时进行控制的目的。
在一个示例中，如图5所示，盖板100为矩形，有四个侧面，包括首尾依次连接的第一侧面110、第二侧面120、第三侧面130和第四侧面140形成。 其中，第一侧面110和第二侧面120组成第一侧面单元，第三侧面130和第四侧面140组成第二侧面单元。在第一侧面单元与第二侧面单元的一个交接拐角处(第一侧面110与第四侧面140的交接拐角处)的凹槽200中设置有第一电极510，在另一个交接拐角处(第二侧面120与第三侧面130的交接拐角处)的凹槽200中设置有第二电极520。
在本示例中，在盖板100的对角线的两端位置分别设置有第一电极510和第二电极520，通过向第一电极510和第二电极520分别施加不同的电信号来形成电场，从而控制边框颜色变化。例如，如图5所示，在第一侧面110与第四侧面140的交接拐角处的第一电极510上施加正电压，在第二侧面120与第三侧面130的交接拐角处的第二电极520上施加负电压，以形成电场，从而分别控制各侧面的颜色变化。
需要说明的是，在本示例中，第一电极和第二电极之间可产生电场。第一电极和第二电极可以为片状电极，第一电极和第二电极的具体设置方式可以是：将片状电极与盖板的主表面相垂直地设置在凹槽内，且盖板的对角线的两端所设置的电极可以是一个或者两个。
在一个示例中，当盖板的对角线的两端所设置的第一电极和第二电极的数量分别为一个时，各电极可以是与侧面的延伸方向之间呈斜夹角、且与盖板相垂直的方式设置在凹槽内。示例性地，第一电极和第二电极可以相互平行，当然也可以不平行，只要能够使得相隔设置的第一电极和第二电极之间产生电场即可。
例如，如图6所示，在第一侧面110与第四侧面140的交接拐角处的第一电极510与第一侧面110的延伸方向之间呈斜夹角，在第二侧面120与第三侧面130的交接拐角处的第二电极520与第二侧面120之间呈斜夹角，且第一电极510和第二电极520平行。
在另一个示例中，当盖板的对角线两端所设置的第一电极和第二电极的数量分别为两个时，每端所设置的两个电极均垂直于盖板的主表面设置，且两个电极之间相互垂直设置。每端所设置的两个电极中，一个电极与其所在的相交的两个侧面中的一个侧面的延伸方向垂直，另一个电极与其所在的相交的两个侧面中的另一个侧面的延伸方向垂直。
例如，如图5所示，在第四侧面140与第一侧面110的交接拐角处的凹槽200中设置两个第一电极510，其中一个第一电极510与第一侧面110的延伸方向垂直，另一第一电极510与第四侧面140的延伸方向垂直。
同样地，在第二侧面120与第三侧面130的交接拐角处的凹槽200中设置两个第二电极520，且其中一个第二电极520与第二侧面120的延伸方向垂直，另一第二电极520与第三侧面130的延伸方向垂直。
需要说明的是，以上提供的仅是盖板的示例性的实施例，在实际应用中，对第一电极和第二电极的设置位置不进行限定。
此外，在本公开实施例所提供的盖板中，第一电极和第二电极可以与显示模组的驱动电路板进行电连接，从而向各第一电极和第二电极上施加电信号。其中，第一电极和第二电极可通过在盖板上布线的方式与驱动电路板连接。
在一个实施例中，盖板100包括相对的第一主表面101和第二主表面102，在第一主表面101的周边区域设置有遮光层。变色控制结构还包括用于向第一电极510和第二电极520输入电信号的走线(图中未示出)，走线布设于第一主表面101上，并位于遮光层所在区域。
在一个示例中，在盖板100的周边设置遮光层，该遮光层位于显示装置的非显示区域，在遮光层所在区域布设走线，能够在走线不会对显示区域造成影响的情况下，实现将第一电极510和第二电极520与显示模组的驱动电路板连接的目的。
应当理解的是，在实际应用中，第一电极510和第二电极520也可以利用其他方式来施加电信号，对此并不进行限定，且布设走线方式也不仅局限于此。
此外，在本公开实施例提供的盖板100中，凹槽200可通过CNC磨边技术形成于盖板100的侧面上。凹槽200的形状可以通过改变CNC刀头来实现不同形状。该凹槽200在与其所在的侧面的延伸方向垂直的方向上的截面形状可以是矩形、倒梯形、半圆形等各种形状。
如图3所示，在一个实施例中，凹槽200在与其所在的侧面的延伸方向垂直的方向上的截面形状为倒梯形。该倒梯形包括上底边和下底边，且上底 边的长度大于下底边的长度，上底边为凹槽200的槽口端且位于侧面上，下底边为凹槽200的槽底端。
在本实施例中，凹槽200的截面形状为倒梯形，使得凹槽200的槽口端相较于槽底端更宽。这样，能够使得盖板100的边缘处在凹槽200的侧壁与盖板100的第一主表面和第二主表面之间的部分，从靠近凹槽200的槽口端的一侧至靠近凹槽200的槽底端的一侧，厚度逐渐增大，更能保证盖板100边缘的物理强度，不易造成边缘损坏。
在另一个实施例中，如图4所示，凹槽200在与其所在的侧面的延伸方向垂直的方向上的横截面形状为半圆形。该半圆形包括弧线部和直线部，直线部位于侧面上且为凹槽200的槽口端，弧线部为凹槽200的槽底端，即凹槽200的槽底为曲面状。
在本实施例中，凹槽200的截面形状为半圆形，且半圆形的直线部位于侧面上，弧线部位于凹槽200的槽底端，使得凹槽200的槽口端相较于槽底端更宽。这样，能够使得盖板100的边缘处在凹槽200的侧壁与盖板100的第一主表面和第二主表面之间的部分，从靠近凹槽200的槽口端的一侧至靠近凹槽200的槽底端的一侧，厚度逐渐增大，更能保证盖板100边缘的物理强度，不易造成边缘损坏。
应当理解的是，在其他实施例中，凹槽200的形状还可以采用其他形状，并不对此进行限定。
此外，在本公开实施例中，如图3至图4所示，在凹槽200外还可以设有将变色材料层300封装于凹槽200内的封装层600。通过在凹槽200外设有封装层600，该封装层600用于将变色材料层300封装于凹槽200内，能够实现密封和保护作用。
本公开实施例还提供盖板的制备方法简单，包括：
对盖板100的侧面进行研磨，形成凹槽200；
将变色材料注入凹槽200内，形成所述变色材料层300；以及
在凹槽200内设置变色控制结构。
进而，上述制备方法还包括：在所述凹槽外涂覆封装胶，形成封装层。
具体而言，本公开实施例提供的上述盖板100，其可采用如下步骤制成。
首先，将盖板100清洗。
然后，利用CNC磨边技术(先粗磨、后精磨)，将盖板100的侧面进行研磨，形成凹槽200。
然后，将胆甾相液晶或电致变色材料等变色材料灌入凹槽200内，形成变色材料层300。
然后，在上述实施例所说明的位置，将第一电极510和第二电极520设置在盖板100的凹槽200内，并在盖板100的第一主表面上布设走线。
最后，通过胶头沿着凹槽200涂覆一层封装胶，以形成封装层600，实现对凹槽200内的变色材料层300及电极进行密封和保护的作用。
本公开实施例还提供一种盖板，其能够应用于显示装置。盖板采用本公开实施例提供的盖板形成。该盖板应用于显示装置中，可设置于显示屏的显示面一侧，从而使得显示装置获得炫彩边框，且不会增加显示装置的整体厚度，降低碰撞碎屏风险，实现窄边框化设计，提高屏占比。
此外，本公开实施例还提供一种显示装置，包括：显示屏及本公开实施例所提供的盖板，盖板设置于显示屏的显示面一侧。盖板包括背对设置的第一表面和第二表面，且第一表面面向显示屏的显示面设置。显示装置包括显示区和非显示区，变色材料层和变色控制结构均位于非显示区。
在本实施例中，盖板上的变色材料层和变色控制结构均位于非显示区，通过控制变色材料层发生变色，能够实现炫彩边框。显然，本公开实施例提供的盖板及显示装置也能带来由本公开实施例所提供的盖板所带来的所有有益效果，在此不再赘述。
在本公开实施例中，显示装置还可以包括用于驱动显示屏的驱动电路板，第一电极和第二电极与驱动电路板电连接。如此，通过显示屏的驱动电路板来控制第一电极和第二电极上所施加的电信号，从而能够控制边框颜色变化。
此外，本公开实施例所提供的显示装置可以是触控显示装置，其还可以包括触控屏，触控屏设置于显示屏与盖板之间。应当理解的是，本公开实施例提供的显示装置也可以是非触控显示装置。
以上所述仅是本公开的优选实施方式，应当指出，对于本技术领域的普 通技术人员来说，在不脱离本公开原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视本公开的保护范围。

Claims (17)

  1. 一种盖板，其应用于显示装置，所述盖板包括相对的两个主表面和连接两个主表面的侧面，
    在所述侧面开设有凹槽，所述凹槽内设置有变色材料层、及用于控制所述变色材料层变色的变色控制结构。
  2. 根据权利要求1所述的盖板，其中，
    所述变色材料层为电致变色材料层、或者胆甾相液晶层，
    所述变色控制结构通过控制外加电场变化来控制所述变色材料层变色。
  3. 根据权利要求2所述的盖板，其中，
    所述变色控制结构包括至少一个第一电极和至少一个第二电极，所述第一电极与所述第二电极相隔设置，在被施加有不同电压时能够产生电场。
  4. 根据权利要求3所述的盖板，其中，
    所述盖板包括多个所述侧面，所述第一电极和/或所述第二电极设置在相邻接的两个所述侧面的交接拐角处的所述凹槽中。
  5. 根据权利要求4所述的盖板，其中，
    所述侧面有四个，包括首尾依次连接的第一侧面、第二侧面、第三侧面和第四侧面，
    其中，所述第一侧面和所述第二侧面的交接拐角处的所述凹槽中设置有所述第一电极，所述第二侧面与所述第三侧面的交接拐角处的所述凹槽中设置有所述第二电极，所述第三侧面与所述第四侧面的交接拐角处的所述凹槽中设置有所述第一电极，所述第一侧面与所述第四侧面的交接拐角处的所述凹槽中设置有所述第二电极。
  6. 根据权利要求4所述的盖板，其中，
    所述侧面有四个，包括首尾依次连接的第一侧面、第二侧面、第三侧面和第四侧面，
    其中，所述第一侧面和所述第二侧面组成第一侧面单元，所述第三侧面和所述第四侧面组成第二侧面单元，在所述第一侧面单元与所述第二侧面单元的一个交接拐角处的所述凹槽中设置有所述第一电极，在另一个交接拐角 处的所述凹槽中设置有所述第二电极。
  7. 根据权利要求3至5中任一项所述的盖板，其中，
    所述第一电极与所述第二电极相对设置，所述变色材料层设置在所述第一电极与所述第二电极之间。
  8. 根据权利要求3至7中任一项所述的盖板，其中，
    所述两个主表面为第一主表面和第二主表面，在所述第一主表面的周边区域设置有遮光层；
    所述变色控制结构还包括用于向所述第一电极和所述第二电极输入电信号的走线，所述走线布设于所述第一主表面上，并位于所述遮光层所在区域。
  9. 根据权利要求1至8中任一项所述的盖板，其中，
    所述凹槽在与其所在的所述侧面的延伸方向垂直的方向上的截面为倒梯形；
    或者，所述凹槽在与其所在的所述侧面的延伸方向垂直的方向上的截面为半圆形，且所述凹槽的槽底为曲面状。
  10. 根据权利要求1至9中任一项所述的盖板，其中，在所述凹槽上设有将所述变色材料层封装于所述凹槽内的封装层。
  11. 一种显示装置，包括：显示屏及如权利要求1至10中任一项所述的盖板，所述盖板设置于所述显示屏的显示面一侧。
  12. 一种盖板的制备方法，其为制造权利要求1至10中任一项所述的盖板的方法，包括：
    对所述盖板的所述侧面进行研磨，形成凹槽；
    将变色材料灌入所述凹槽内，形成所述变色材料层；以及
    在所述凹槽内设置所述变色控制结构。
  13. 根据权利要求12所述的制备方法，其中，所述凹槽在与其所在的所述侧面的延伸方向垂直的方向上的截面为倒梯形；
    或者，所述凹槽在与其所在的所述侧面的延伸方向垂直的方向上的截面为半圆形，且所述凹槽的槽底为曲面状。
  14. 根据权利要求12或13所述的制备方法，其中，所述变色材料为电致变色材料、或者胆甾相液晶材料。
  15. 根据权利要求14所述的制备方法，其中，在所述凹槽内设置所述变色控制结构为：在所述凹槽内设置至少一个第一电极和至少一个第二电极，将所述第一电极与所述第二电极相隔设置，从而在对第一电极和第二电极施加不同电压时能够产生电场，所述变色材料层的至少一部分设置在所述第一电极与所述第二电极之间。
  16. 根据权利要求15所述的制备方法，其中，
    所述盖板包括多个侧面，将所述第一电极和/或所述第二电极设置在相邻接的两个所述侧面的交接拐角处的所述凹槽中。
  17. 根据权利要求12至16中任一项所述的制备方法，其中，还包括：在所述侧面沿所述凹槽涂覆封装胶，形成封装层。
PCT/CN2019/107728 2018-10-24 2019-09-25 盖板及其制备方法、显示装置 WO2020082966A1 (zh)

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