CN112014917A - Polaroid, display and terminal - Google Patents

Polaroid, display and terminal Download PDF

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Publication number
CN112014917A
CN112014917A CN201910473233.6A CN201910473233A CN112014917A CN 112014917 A CN112014917 A CN 112014917A CN 201910473233 A CN201910473233 A CN 201910473233A CN 112014917 A CN112014917 A CN 112014917A
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point
display substrate
polarizer
thickness
polaroid
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CN112014917B (en
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刘颖
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • 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
    • G02F1/133528—Polarisers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/868—Arrangements for polarized light emission

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Polarising Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The disclosure relates to polarizers, displays, and terminals. The polarizer is applied to a display substrate with fixed curvature, and comprises: the adhesive layer is positioned on the middle layer of the polaroid and is used for bonding the first base layer and the second base layer in the polaroid; the polaroid is bent when being applied to a display substrate with fixed curvature, and the thicknesses of glue layers of the bent polaroid are the same or the difference of the thicknesses is within a preset numerical range. The technical scheme can ensure that the distance between each layer of each area of the polaroid and the display substrate in the display screen is almost consistent, and the problems of uneven brightness and abnormal display are avoided.

Description

Polaroid, display and terminal
Technical Field
The disclosure relates to the technical field of display, in particular to a polarizer, a display and a terminal.
Background
POL (Polarizer) is an important component of the display. In an LCD (Liquid Crystal Display), two front and rear polarizing plates are attached to Liquid Crystal glass to form a Liquid Crystal plate having a total thickness of about 1mm, and if any one polarizing plate is omitted, the LCD cannot Display an image. A POL is disposed on the Light Emitting side of the OLED (Organic Light-Emitting Diode) display, and the POL mainly functions as an anti-reflection and a shadow-eliminating function (reducing the visibility of the traces of the touch sensor).
At present, the display screen of fixed camber has appeared in the hard screen, and the polaroid has crucial influence as one deck membrane material essential to the demonstration of display screen, if the polaroid is apart from the display substrate distance inconsistent in the display screen, the uneven problem of luminance can appear, if the PVA layer of the inside has been destroyed in the bending process, more can lead to abnormal display, like white limit etc..
Disclosure of Invention
The embodiment of the disclosure provides a polarizer, a display and a terminal. The technical scheme is as follows:
according to a first aspect of the embodiments of the present disclosure, there is provided a polarizer applied to a display substrate having a fixed curvature, the polarizer including:
the adhesive layer is positioned on the middle layer of the polaroid and is used for bonding the first base layer and the second base layer in the polaroid;
the polaroid is bent when being applied to a display substrate with fixed curvature, and the thicknesses of glue layers of the bent polaroid are the same or the difference of the thicknesses is within a preset numerical range.
In one embodiment, the polarizer comprises at least one divided region, each divided region corresponds to a region of the display substrate with a radius of curvature within a corresponding predetermined radius range, and the thicknesses of glue layers of different divided regions of the polarizer are different.
In one embodiment, the display substrate having a fixed curvature includes a first side that is concave and a second side that is convex;
when the polaroid is attached to the first side of the display substrate, the thickness of the glue layer of each divided area in the polaroid is in positive correlation with the curvature radius of the display substrate area corresponding to the divided area;
when the polaroid is attached to the second side of the display substrate, the thickness of the glue layer of each divided area in the polaroid is inversely related to the curvature radius of the area of the display substrate corresponding to the divided area.
In one embodiment, when the polarizer is attached to the first side of the display substrate, the thickness of the glue layer at the first division area corresponding to the area with the largest curvature radius of the display substrate is a first thickness;
the glue line thickness of a second divided area in the polaroid corresponding to the curvature radius R1 area on the display substrate is the thickness obtained by uniformly reducing a first preset glue amount at the second divided area on the basis of the first thickness;
the first preset glue amount delta 1 is obtained by the following formula:
△1＝SABC*W；
the SABC is the area of a triangle ABC, one point of the lower surface of the adhesive layer at the second divided area is used as a first reference point, one point of the upper surface of the adhesive layer at the second divided area is used as a second reference point, a connecting line of the first reference point and the second reference point is perpendicular to the polarizer, the relative position of the first reference point and the second reference point is determined as the relative position of a point A and a point B, the relative position of the first reference point and the second reference point on the polarizer after bending is determined as the relative position of the point A and a point C, the triangle ABC formed by the point A, the point B and the point C is determined according to the relative position of the point A and the point B and the relative position of the point A and the point C, and W is the width of a side perpendicular to each inscribed circle of the polarizer after bending.
In one embodiment, when the polarizer is attached to the second side of the display substrate, the thickness of the adhesive layer at the first dividing area corresponding to the area with the largest curvature radius of the display substrate is a second thickness;
the glue layer thickness of a second divided area in the polarizer, corresponding to the curvature radius R1 area on the display substrate, is the thickness obtained by uniformly adding a second preset glue amount on the second divided area on the basis of the second thickness;
the first preset glue amount delta 2 is obtained by the following formula:
△2＝Sabc*W；
wherein S isabcThe area of the triangle abc is determined by taking one point of the lower surface of the adhesive layer at the second divided region as a first reference point and one point of the upper surface of the adhesive layer at the second divided region as a second reference point, the connecting line of the first reference point and the second reference point is perpendicular to the polarizer, and the first reference point is used for determining the area of the triangle abcDetermining the relative position of the test point and the second reference point as the relative position of a point a and a point b, determining the relative position of a first reference point and a second reference point on the bent polarizer as the relative position of the point a and the point c, determining a triangle abc formed by the point a, the point b and the point c according to the relative position of the point a and the point b and the relative position of the point a and the point c, wherein W is the width of a side edge perpendicular to each inscribed circle of the bent polarizer.
In one embodiment, the glue layer comprises a polyvinyl alcohol, PVC, glue layer.
According to a second aspect of the embodiments of the present disclosure, there is provided a display device including a display substrate having a fixed curvature and a polarizer, wherein thicknesses of glue layers at various places in the polarizer are the same or a difference between the thicknesses is within a predetermined value range.
In one embodiment, the display substrate comprises a Liquid Crystal Display (LCD) display substrate, and the polarizers are attached to both the light emitting side and the backlight side of the LCD display substrate.
In one embodiment, the display substrate comprises an OLED display substrate, and the polarizer is attached to a light emitting side of the OLED display substrate.
According to a third aspect of the embodiments of the present disclosure, there is provided a terminal including the above-described display.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the embodiment provides a polaroid, the polaroid includes the glue film that is used for bonding first basic unit and second basic unit, the polaroid is crooked when being applied to the display substrate who has fixed camber, and the thickness of the glue film is the same everywhere after the bending or the difference of thickness is in predetermineeing numerical range, just so can guarantee every regional distance of this polaroid display substrate distance is unanimous in the display screen, avoids appearing luminance inequality, shows unusual problem.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram illustrating a polarizer structure according to an exemplary embodiment.
Fig. 2 is a schematic diagram of a glue layer shown in accordance with an example embodiment.
Fig. 3 is a schematic diagram illustrating a structure of a liquid crystal display according to an exemplary embodiment.
Fig. 4 is a schematic diagram illustrating a structure of a liquid crystal display according to an exemplary embodiment.
Fig. 5 is a schematic structural diagram illustrating an OLED display according to an exemplary embodiment.
Fig. 6 is a schematic structural diagram illustrating an OLED display according to an exemplary embodiment.
Fig. 7 is a block diagram illustrating a terminal according to an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims. FIG. 1 is a schematic diagram illustrating a polarizer according to an exemplary embodiment, where, as shown in FIG. 1, the polarizer 10 includes a glue layer 101, the glue layer 101 is located at a middle layer of the polarizer 10, and is used for bonding a first base layer 102 and a second base layer 103 in the polarizer 10; for example, the basic structure of the polarizer 10 may include: the middle Adhesive layer 101, two TAC (Triacetyl Cellulose) layers, a PSA film (Pressure sensitive Adhesive) layer, a Release film layer and a Protective film layer respectively located at two sides of the Adhesive layer 101, in this structure, the first base layer 102 and the second base layer 103 may be the TAC layers. Of course, the polarizer 10 may have other structures, which are not illustrated herein.
Here, the polarizer 10 of the present embodiment is used for a Display substrate having a fixed curvature, as shown in fig. 1, the Display substrate is a Display substrate 20 having a fixed curvature, and when the Display substrate is a Liquid Crystal Display (LCD) substrate, it is necessary that one polarizer is attached to a light emitting surface side of the Display substrate 20 and the other polarizer is attached to a backlight surface side of the Display substrate 20; when the display substrate is an OLED (Organic Light-Emitting Diode) display substrate, the polarizer 10 is attached to a Light-Emitting surface of the display substrate 20. The polarizer 10 is a flat plate as shown in fig. 1, and when the polarizer 10 is applied to a display substrate having a fixed curvature, the polarizer 10 is bent and attached to one side of the display substrate.
Here, after the polarizer is applied to a display screen with a fixed curvature, since the degree of bending at different positions is different, and the degree of expansion or the degree of compression of the adhesive layer is different, in order to make the thickness of the adhesive layer at each position of the polarizer after bending the same or make the difference between the thicknesses within a predetermined range (for example, the predetermined range may be 0 to 1 micron), different adhesive layer thicknesses may be set for the adhesive layers at different degrees of bending. If the thickness of the glue layer at the position with larger expansion degree is set to be thicker, the thickness of the glue layer at the position is not reduced to a certain range after expansion; the thickness of the glue layer at the position with larger compression degree is set to be thinner so as not to exceed a certain range after compression.
For example, if the polarizer 10 is applied to the concave side of the display substrate 20, the adhesive layer will shrink inward toward the middle after the polarizer is bent, and the bending degree of the middle part is the smallest, so that the shrinking degree of the adhesive layer after the polarizer is bent is the smallest, and the bending degree of the adhesive layer gradually increases toward the edge, and the shrinking degree is the larger; at this moment, the thickness of the glue layer in the area with the larger bending degree is set smaller, so that the glue layer is prevented from exceeding a certain range after being retracted, and the thickness of each glue layer is consistent or close.
Or, if the polarizer 10 is applied to the convex side of the display substrate 20, the adhesive layer expands towards both sides after the polarizer is bent, and the bending degree of the middle portion is the smallest, so that the expansion degree of the adhesive layer after the polarizer is bent is the smallest, and the expansion degree of the adhesive layer gradually increases towards the edge and is the larger; at this moment, the larger the thickness of the glue layer in the area with the larger bending degree is, so that the glue layer is prevented from being reduced in thickness to a certain range after being expanded, and the thickness of each glue layer is consistent or close.
Here, the thickness of the adhesive layer may also be gradually varied in various places in the polarizer 10. Taking the example that the polarizer 10 is applied to the concave side of the display substrate 20, the thickness of the glue layer of the polarizer may be thinner from the middle to the edge, so long as it is ensured that the thickness of the glue layer does not exceed a certain range after the glue layer is retracted, and it is ensured that the thicknesses of the glue layers at various positions are the same or similar. Taking the example that the polarizer 10 is applied to the convex side of the display substrate 20, the thickness of the glue layer of the polarizer may be thicker and thicker from the middle to the edge, as long as it is ensured that the glue layer does not reduce the thickness of the glue layer within a certain range after the glue layer is expanded, and it is ensured that the thicknesses of the glue layers are consistent or close. In this case, the thickness of the glue layer is also different at the same degree of bending.
It should be noted that the thicknesses of the adhesive layers at various positions in the polarizer may also be set according to other rules, as long as the thicknesses of the adhesive layers at various positions after the polarizer is applied to the corresponding display substrate and is consistent or close, which is not limited herein.
The embodiment can ensure that the thicknesses of all adhesive layers of the bent polaroid are the same or the thickness difference is within a preset numerical range, ensures that the distance between each layer of each area of the polaroid and the display substrate in the display screen is almost consistent, and avoids the problems of uneven brightness and abnormal display.
In one possible embodiment, the polarizer 10 includes at least one divided region, each divided region corresponds to a region of the display substrate having a radius of curvature within a corresponding predetermined radius, and the thicknesses of the adhesive layers of different divided regions of the polarizer are different.
Here, for convenience of manufacture, the polarizer may be divided into two or more divided regions, and then different adhesive layer thicknesses may be provided for the different divided regions.
Here, the polarizer is applied to a display substrate having a fixed curvature, the display substrate may be divided into a plurality of regions according to a difference in curvature radius, the size of the display substrate on the display screen may be the same as that of the polarizer, and each position on the polarizer may correspond to each position on the display substrate one-to-one, so that it may be assumed that the polarizer includes at least one divided region, each of which corresponds to a region on the display screen where one or more curvature radii are located. Illustratively, as shown in FIG. 1, the radius of curvature in the area 204 of the display substrate 20 is within a predetermined radius [ R ]m，Rn]In addition, the degree of bending is not very different, so that the area 204 on the display substrate 20 can be divided into one area, and the area 204 can correspond to one divided area 104 of the polarizer 1. Alternatively, a divided region may correspond to a region on the display substrate where a radius of curvature is located, for example, the middle region 203 of the display substrate 20 may have the same radius of curvature, the region 203 of the display substrate 20 may be divided into a region, and the middle region 203 may correspond to a divided region 105 of the polarizer 1.
Here, after the polarizer is bent when applied to a display substrate having a fixed curvature, the curvature radius ranges in different divided regions on the polarizer are different, the bending degrees are also different, and the expansion degree or the compression degree of the adhesive layer is different, so that the adhesive layers at different divided regions can be set to different thicknesses, for example, the thicker the adhesive layer thickness at the divided region with the larger expansion degree is set, so as to prevent the adhesive layer thickness at the divided region from being reduced to a certain range after the expansion; the thickness of the glue layer at the divided region where the degree of compression is larger is set thinner so as not to exceed a certain range after compression. The thickness of the glue layer of each division region after the polaroid is bent is the same or the thickness difference is in a preset numerical range, namely the thickness of the glue layer of each division region is almost the same, so that the distance between each layer of each region of the polaroid and the distance between the display substrates in the display screen are almost the same, the problem of uneven brightness is avoided, the glue layers with different thicknesses in each region can be prevented from damaging the glue layers in the bending process, and abnormal display is avoided.
In one possible embodiment, as shown in FIG. 1, the display substrate 20 with a fixed curvature includes a first side 201 that is concave towards the inside of the display substrate and a second side 202 that is convex towards the outside of the display substrate; the first side 201 may be a light emitting surface side of the display substrate, and in this case, the second side 202 is a backlight surface side of the display substrate; the second side 202 may also be a backlight side of the display substrate, in which case the second side 202 is a light-emitting side of the display substrate.
When the polaroid is attached to the first side of the display substrate, the thickness of the glue layer of each divided area in the polaroid is in positive correlation with the curvature radius of the display substrate area corresponding to the divided area; the original composition is as follows: when the side of the polarizer 10 applied to the display substrate 20 is bent, the bending degree of the adhesive layer in each divided region of the polarizer is the smallest and the deformation is the smallest, and as the curvature radius is reduced, the bending degree of the adhesive layer in the corresponding divided region is increased and the deformation is larger. Therefore when the polaroid is attached to the first side of the inner recess of the display substrate, the polaroid needs to be retracted in the inner recess, at the moment, the glue layer in the polaroid is also retracted, the smaller the curvature radius is, the more the glue layer is retracted, at the moment, in order to ensure that the thickness of the glue layer in each area is consistent or close, the smaller the curvature radius is, the smaller the thickness of the glue layer in the corresponding divided area is, and the thickness of the glue layer is prevented from exceeding a certain range after the glue layer is retracted.
When the polaroid is attached to the second side of the display substrate, the thickness of the glue layer of each divided area in the polaroid is inversely related to the curvature radius of the display substrate area corresponding to the divided area; the original composition is as follows: when the side of the polarizer 10 applied to the display substrate 20 is bent, the bending degree of the adhesive layer in each divided region of the polarizer is the smallest and the deformation is the smallest, and as the curvature radius is reduced, the bending degree of the adhesive layer in the corresponding divided region is increased and the deformation is larger. Therefore, when the polaroid is attached to the second side of the outer protrusion of the display substrate, the polaroid needs to be expanded at the outer protrusion, at the moment, the glue layer in the polaroid is also expanded, the smaller the curvature radius is, the more the glue layer expands outwards, at the moment, in order to ensure that the thicknesses of the glue layers in all the areas are consistent or close, the smaller the curvature radius is, the larger the thickness of the glue layer in the corresponding divided area is, and therefore the situation that the thickness of the glue layer is not reduced to a certain extent after the glue layer is expanded outwards is ensured.
In this embodiment, when the polarizer is attached to the concave first side of the display substrate, the thickness of the adhesive layer in each region of the polarizer is in positive correlation with the curvature radius of the display substrate region corresponding to each region of the polarizer; when the polaroid is attached to the convex second side of the display substrate, the thickness of the glue layer of each area in the polaroid is inversely related to the curvature radius of the display substrate area corresponding to each area in the polaroid, so that the glue layer thicknesses of all divided areas are the same or similar.
In a possible embodiment, when the polarizer is attached to the first side of the display substrate, the thickness of the glue layer of each divided region in the polarizer is in positive correlation with the curvature radius of the display substrate region corresponding to the divided region.
At this time, the thickness of the glue layer at the first division area corresponding to the area with the maximum curvature radius of the display substrate can be set to be a first thickness; the first thickness may be the thickness of an adhesive layer in the conventional polarizer. The glue line thickness of a second divided area in the polaroid corresponding to the curvature radius R1 area on the display substrate is the thickness obtained by uniformly reducing a first preset glue amount at the second divided area on the basis of the first thickness; the smaller the curvature radius R1 is, the larger the first preset glue amount needing to be reduced is, the smaller the glue layer thickness of the corresponding divided area is, so that the positive correlation between the glue layer thickness of the divided area and the curvature radius of the display substrate area corresponding to the divided area is realized.
Here, the first preset glue amount Δ 1 is obtained by the following formula 1:
△1＝SABCw (formula 1)
Wherein S isABCFor the area of triangle ABC, fig. 2 is a schematic diagram of a bondline shown in accordance with an exemplary embodiment. As shown in fig. 2, a point on the lower surface of the adhesive layer in the second divided region 1011 is taken as a first reference point, a point on the upper surface of the adhesive layer in the second divided region is taken as a second reference point, a connecting line between the first reference point and the second reference point is perpendicular to the polarizer, and the relative position between the first reference point and the second reference point is determined as the relative position between the point a and the point B, that is, when the polarizer is not bent, when the point a is at the position of the first reference point, the point B is at the position of the second reference point; and determining the relative positions of the first reference point and the second reference point on the polaroid after bending as the relative positions of the point A and the point C, namely when the position of the first reference point after bending is the position of the point A, the position of the second reference point after bending is the position of the point C. And determining a triangle ABC formed by the point A, the point B and the point C according to the relative positions of the point A and the point B and the relative positions of the point A and the point C, wherein W is the width of the side edge perpendicular to each inscribed circle of the bent polarizer.
Therefore, the thickness of the glue layer of each area in the glue layer of the polaroid can be obtained only by performing a precise experiment, and the polaroid is manufactured.
In a possible embodiment, when the polarizer is attached to the second side of the display substrate, the thickness of the glue layer of each divided region in the polarizer is inversely related to the radius of curvature of the display substrate region corresponding to the divided region.
At this time, the thickness of the glue layer at the first division area corresponding to the area with the maximum curvature radius of the display substrate can be set to be a second thickness; the second thickness may be the thickness of an adhesive layer in the conventional polarizer, and may be the same as the first thickness, or may be different from the first thickness. The glue layer thickness of a second divided area in the polarizer, corresponding to the curvature radius R1 area on the display substrate, is the thickness obtained by uniformly adding a second preset glue amount on the second divided area on the basis of the second thickness; the smaller the curvature radius R1, the larger the second preset glue amount to be added, the larger the glue layer thickness of the corresponding divided region, so that the inverse correlation between the glue layer thickness of the divided region and the curvature radius of the display substrate region corresponding to the divided region is realized.
Here, the second preset glue amount Δ 2 is obtained by the following formula:
△2＝Sabcw (formula 2)
Wherein S isabcTaking a point on the lower surface of the adhesive layer at the second divided region as a first reference point, taking a point on the upper surface of the adhesive layer at the second divided region as a second reference point, determining the relative position of the first reference point and the second reference point as the relative position of a point a and a point b, determining the relative position of the first reference point and the second reference point on the bent polarizer as the relative position of the point a and the point c, and determining a triangular abc composed of the point a, the point b and the point c according to the relative position of the point a and the point b and the relative position of the point a and the point c, where W is the width of a side perpendicular to each inscribed circle of the bent polarizer, which may be referred to fig. 2.
Therefore, the thickness of the glue layer of each area in the glue layer of the polaroid can be obtained only by performing a precise experiment, and the polaroid is manufactured.
In one possible embodiment, the adhesive layer in the polarizer includes PVA (Polyvinyl Alcohol).
The embodiment also provides a display, which comprises a display substrate with fixed curvature and a polaroid, wherein the thicknesses of glue layers at all positions in the polaroid are the same or the difference between the thicknesses is within a preset value range.
Here, the thickness of the adhesive layer in the polarizer may be set as described in the above embodiments, so that when the polarizer is attached to one side of the display substrate, the thickness of the adhesive layer at various positions in the polarizer may be the same or the difference between the thicknesses of the adhesive layers may be within a predetermined value range, for example, the predetermined value range may be 0 to 1 μm.
In one possible embodiment, the display substrate comprises a Liquid Crystal Display (LCD) display substrate, and the polarizer is attached to both the light emitting side and the backlight side of the LCD display substrate.
Illustratively, fig. 3 is a schematic diagram illustrating a structure of a liquid crystal display according to an exemplary embodiment. As shown in fig. 3, the LCD 1 includes an LCD display substrate 20A, and a polarizer 10A located on the concave light-emitting side of the LCD display substrate, wherein before the polarizer 10A is not bent, the thickness of the glue layer of each divided region in the polarizer 10A is positively correlated to the radius of curvature of the display substrate region corresponding to the divided region, so that after the polarizer 10A is bent on the concave light-emitting side of the LCD display substrate, the thickness of the glue layer of each divided region of the polarizer 10A is the same or the difference between the thicknesses is within a predetermined range. The polaroid 10B is positioned on the convex backlight side of the LCD display substrate, before the polaroid 10B is not bent, the thickness of the glue layer of each divided area in the polaroid 10B is inversely related to the curvature radius of the display substrate area corresponding to the divided area, so that after the polaroid 10B is bent on the convex backlight side of the LCD display substrate, the thickness of the glue layer of each divided area of the polaroid 10B is the same or the difference of the thicknesses is within a preset value range.
Illustratively, fig. 4 is a schematic diagram illustrating a structure of a liquid crystal display according to an exemplary embodiment. As shown in fig. 4, the LCD 1 includes an LCD display substrate 20B, a polarizer 10C located on the convex light-emitting side of the LCD display substrate 20B, wherein before the polarizer 10C is not bent, the thickness of the glue layer in each divided region of the polarizer 10C is inversely related to the radius of curvature of the display substrate region corresponding to the divided region, so that after the polarizer 10C is bent on the convex light-emitting side of the LCD display substrate, the thickness of the glue layer in each divided region of the polarizer 10C is the same or the difference between the thicknesses is within a predetermined range. The polaroid 10D is positioned on the inwards concave backlight side of the LCD display substrate, before the polaroid 10D is not bent, the thickness of the glue layer of each divided area in the polaroid 10D is in positive correlation with the curvature radius of the area of the display substrate corresponding to the divided area, so that after the polaroid 10D is bent on the inwards concave backlight side of the LCD display substrate, the thickness of the glue layer of each divided area of the polaroid 10D is the same or the difference of the thicknesses is within a preset numerical range.
In one possible embodiment, the display substrate includes an OLED display substrate, and the polarizer is attached to a light emitting side of the OLED display substrate.
For example, fig. 5 is a schematic structural diagram of an OLED display according to an exemplary embodiment. As shown in fig. 5, the OLED display 2 includes an OLED display substrate 20C, and a polarizer 10E disposed on the concave light-emitting side of the OLED display substrate 20C. Before the polarizer 10E is not bent, the thickness of the adhesive layer of each divided region in the polarizer 10E is in positive correlation with the curvature radius of the display substrate region corresponding to the divided region, so that after the polarizer 10E is bent to be attached to the concave light-emitting side of the OLED display substrate 20C, the thickness of the adhesive layer of each divided region of the polarizer 10E is the same or the thickness difference is within a preset value range.
For example, fig. 6 is a schematic structural diagram of an OLED display according to an exemplary embodiment. As shown in fig. 6, the OLED display 2 includes an OLED display substrate 20D, and a polarizer 10F located on the convex light emitting side of the OLED display substrate 20D. Before the polarizer 10F is not bent, the thickness of the glue layer of each divided region in the polarizer 10F is in positive correlation with the curvature radius of the display substrate region corresponding to the divided region, so that after the polarizer 10F is bent while being attached to the convex light-emitting side of the OLED display substrate 20D, the thickness of the glue layer of each divided region of the polarizer 10F is the same or the difference between the thicknesses is within a preset numerical range.
Fig. 7 is a block diagram illustrating a terminal according to an exemplary embodiment, the apparatus being adapted for use with a terminal device. For example, the apparatus 700 may be a mobile phone, a game console, a computer, a tablet device, a personal digital assistant, and the like.
The apparatus 700 may include one or more of the following components: processing components 701, memory 702, power components 703, multimedia components 704, audio components 705, input/output (I/O) interfaces 706, sensor components 707, and communication components 708.
The processing component 701 generally controls the overall operation of the device 700, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 701 may include one or more processors 720 to execute instructions to perform all or a portion of the steps of the methods described above. Further, processing component 701 may include one or more modules that facilitate interaction between processing component 701 and other components. For example, the processing component 701 may include a multimedia module to facilitate interaction between the multimedia component 704 and the processing component 701.
The memory 702 is configured to store various types of data to support operations at the apparatus 700. Examples of such data include instructions for any application or method operating on device 700, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 702 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power supply component 703 provides power to the various components of the device 700. The power components 703 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 700.
The multimedia component 704 includes a screen that provides an output interface between the device 700 and a user. In this embodiment, the screen may include the display described above. In some embodiments, the screen may also include a Touch Panel (TP), and if the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 704 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 700 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 705 is configured to output and/or input audio signals. For example, audio component 705 includes a Microphone (MIC) configured to receive external audio signals when apparatus 700 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 702 or transmitted via the communication component 708. In some embodiments, audio component 705 also includes a speaker for outputting audio signals.
The I/O interface 706 provides an interface between the processing component 701 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 707 includes one or more sensors for providing various aspects of state assessment for the apparatus 700. For example, sensor assembly 707 may detect an open/closed state of apparatus 700, the relative positioning of components, such as a display and keypad of apparatus 700, the change in position of apparatus 700 or a component of apparatus 700, the presence or absence of user contact with apparatus 700, the orientation or acceleration/deceleration of apparatus 700, and the change in temperature of apparatus 700. The sensor assembly 707 may include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor assembly 707 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 707 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 708 is configured to facilitate communication between the apparatus 700 and other devices in a wired or wireless manner. The apparatus 700 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 708 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 708 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 702 comprising instructions, executable by the processor 720 of the apparatus 700 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A polarizer for use with a display substrate having a fixed curvature, the polarizer comprising:
the adhesive layer is positioned on the middle layer of the polaroid and is used for bonding the first base layer and the second base layer in the polaroid;
the polaroid is bent when being applied to a display substrate with fixed curvature, and the thicknesses of glue layers of the bent polaroid are the same or the difference of the thicknesses is within a preset numerical range.
2. The polarizer of claim 1, wherein the polarizer comprises at least one divided region, each divided region corresponding to a region of the display substrate having a radius of curvature within a corresponding predetermined radius, and the thickness of the adhesive layer is different in different divided regions of the polarizer.
3. The polarizer of claim 2 wherein the display substrate having a fixed curvature comprises a first side that is concave and a second side that is convex;
when the polaroid is attached to the first side of the display substrate, the thickness of the glue layer of each divided area in the polaroid is in positive correlation with the curvature radius of the display substrate area corresponding to the divided area;
when the polaroid is attached to the second side of the display substrate, the thickness of the glue layer of each divided area in the polaroid is inversely related to the curvature radius of the area of the display substrate corresponding to the divided area.
4. The polarizer of claim 3, wherein when the polarizer is attached to the first side of the display substrate, the thickness of the adhesive layer at a first divided region corresponding to a region of the display substrate having the largest radius of curvature is a first thickness;
the glue line thickness of a second divided area in the polaroid corresponding to the curvature radius R1 area on the display substrate is the thickness obtained by uniformly reducing a first preset glue amount at the second divided area on the basis of the first thickness;
the first preset glue amount delta 1 is obtained by the following formula:
△1＝SABC*W；
wherein S isABCThe area of the triangle ABC is determined, one point of the lower surface of the adhesive layer at the second divided area is used as a first reference point, one point of the upper surface of the adhesive layer at the second divided area is used as a second reference point, a connecting line of the first reference point and the second reference point is perpendicular to the polarizer, the relative position of the first reference point and the second reference point is determined as the relative position of the point A and the point B, the relative position of the first reference point and the second reference point on the polarizer after bending is determined as the relative position of the point A and the point C, the triangle ABC formed by the point A, the point B and the point C is determined according to the relative position of the point A and the point B and the relative position of the point A and the point C, and W is the width of the side perpendicular to each inscribed circle of the polarizer after bending.
5. The polarizer of claim 3,
when the polaroid is attached to the second side of the display substrate, the thickness of the glue layer at the first dividing area corresponding to the area with the largest curvature radius of the display substrate is a second thickness;
the glue layer thickness of a second divided area in the polarizer, corresponding to the curvature radius R1 area on the display substrate, is the thickness obtained by uniformly adding a second preset glue amount on the second divided area on the basis of the second thickness;
the first preset glue amount delta 2 is obtained by the following formula:
△2＝Sabc*W；
wherein S isabcThe area of the triangle abc is determined by taking a point on the lower surface of the adhesive layer at the second divided region as a first reference point and taking a point on the upper surface of the adhesive layer at the second divided region as a second reference point, and the first reference isAnd determining the relative position of the first reference point and the second reference point on the bent polarizer as the relative position of a point a and a point b, determining a triangle abc consisting of the point a, the point b and the point c according to the relative position of the point a and the point b and the relative position of the point a and the point c, and W is the width of the side edge perpendicular to each inscribed circle of the bent polarizer.
6. The polarizer of claim 1, wherein the adhesive layer comprises a polyvinyl alcohol (PVC) adhesive layer.
7. A display is characterized by comprising a display substrate with fixed curvature and a polaroid, wherein the thicknesses of glue layers at all positions in the polaroid are the same or the difference of the thicknesses is within a preset numerical range.
8. The display of claim 7, wherein the display substrate comprises a Liquid Crystal Display (LCD) display substrate, and wherein the polarizer is affixed to a light emitting side and a backlight side of the LCD display substrate.
9. The display of claim 7, wherein the display substrate comprises an Organic Light Emitting Diode (OLED) display substrate, and the polarizer is attached to a light emitting side of the OLED display substrate.
10. A terminal characterized by comprising a display according to any of claims 7 to 9.
CN201910473233.6A 2019-05-31 2019-05-31 Polaroid, display and terminal Active CN112014917B (en)

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