CN110596947A - Display device - Google Patents
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- CN110596947A CN110596947A CN201910995848.5A CN201910995848A CN110596947A CN 110596947 A CN110596947 A CN 110596947A CN 201910995848 A CN201910995848 A CN 201910995848A CN 110596947 A CN110596947 A CN 110596947A
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- liquid crystal
- film layer
- polarizer
- control panel
- protective film
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0091—Positioning aspects of the light source relative to the light guide
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a display device, which comprises a liquid crystal light control panel and a double-layer liquid crystal display device of the liquid crystal display panel, wherein polaroids are arranged on the light inlet surface and the light outlet surface of the liquid crystal light control panel and the liquid crystal display panel, so that light emitted from a light source needs to sequentially pass through the polaroids on the light inlet surface and the light outlet surface of the liquid crystal light control panel and the liquid crystal display panel; in addition, the light guide plate is used as the substrate base plate of the liquid crystal light control panel, so that the process for independently manufacturing the substrate base plate can be reduced, and the thickness and the cost of the display device are reduced; and the arrangement of the optical film layer can solve the problem of moire patterns between the liquid crystal light control panel and the liquid crystal display panel.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device.
Background
Liquid Crystal Displays (LCDs) are receiving attention from the industry because of their advantages such as small size, low power consumption, and no radiation, and are now widely used in the fields of mobile phones, vehicles, displays, televisions, and public displays. The LCD mainly includes a light source (light bar), a light guide plate, an optical film, a Cell (a TFT substrate, a color film substrate, and a liquid crystal layer located in the middle thereof), and a polarizer. Display is realized mainly by controlling the rotation of liquid crystal molecules through electric signals. At present, various types of liquid crystal displays have been developed, and their driving modes and display effects are different and have long duration. Among various types, the ADS type lcd has a common electrode and a pixel electrode disposed on an array substrate, and thus has been widely used due to its advantages of a wide viewing angle, a high aperture ratio, a high transmittance, and the like. Because the pixel electrode and the common electrode are not in the same plane due to the characteristics of the ADS type lcd, the fringe field formed between the pixel electrode and the common electrode is mainly used to control the rotation of the liquid crystal molecules. However, due to the non-uniformity of the fringe electric field of the pixel electrode and the pre-tilt angle of the liquid crystal molecules caused by Rubbing, the display is prone to dark state light leakage, which causes problems of low contrast ratio, dark state color shift, and the like. The quality of the product picture is reduced, and the product yield and the competitiveness are influenced. In order to maintain the contrast, the backlight brightness is increased, which causes high power consumption and increased production cost, and causes problems of backlight light leakage and Hot Spot.
As displays become popular and increase in size, more and more people are looking at movies and playing games, which is a growing concern for dark state image quality. At present, in order to reduce the problem of dark-state light transmission, the pretilt angle of the liquid crystal is mainly reduced and the polarization degree of the polarizer is increased. Except for changing the alignment mode, the pre-tilt angle of the liquid crystal can be only slightly reduced by performing alignment through PI liquid, and the pre-tilt angle cannot be zero. And the increase of the polarization degree is difficult to realize because the polarization degree of the prior polarizer basically reaches more than 99 percent.
Therefore, it is highly desirable to provide a liquid crystal display capable of effectively solving the dark state light leakage.
Disclosure of Invention
The embodiment of the invention provides a display device, which is used for solving the problems of low contrast, dark color cast and the like caused by dark state light leakage.
An embodiment of the present invention provides a display device, including: the liquid crystal display panel and the liquid crystal light control panel are stacked, the polarization structure is positioned between the liquid crystal display panel and the liquid crystal light control panel, and the first polarizer is positioned on one side, away from the liquid crystal light control panel, of the liquid crystal display panel; wherein the content of the first and second substances,
the liquid crystal light control panel comprises an array substrate which is far away from one side of the liquid crystal display panel; the substrate of the array substrate is a light guide plate; and a light source and a second polarizer are arranged on one side of the light guide plate.
Optionally, in a specific implementation, in the display device provided in the embodiment of the present invention, the polarization structure includes a third polarizer, an optical film layer, and a fourth polarizer, which are stacked, where the third polarizer is close to the liquid crystal light control panel, and the fourth polarizer is close to the liquid crystal display panel.
Optionally, in a specific implementation manner, in the display device provided in the embodiment of the present invention, the third polarizer includes a first protective film layer, a first polyvinyl alcohol film layer, and a second protective film layer, which are stacked in a stacked manner; the first protective film layer is close to the liquid crystal light control panel, and the second protective film layer is close to the liquid crystal display panel;
the liquid crystal light control panel comprises an opposite substrate arranged opposite to the array substrate, and the substrate material of the opposite substrate is a high polymer material; and the substrate base plate of the opposite base plate is reused as the first protective film layer.
Optionally, in a specific implementation manner, in the display device provided in the embodiment of the present invention, the polarization structure includes a fifth polarizer and an optical film layer; the fifth polarizer comprises a third protective film layer, a second polyvinyl alcohol film layer and a fourth protective film layer which are arranged in a stacked mode; the third protective film layer is close to the liquid crystal light control panel, and the fourth protective film layer is close to the liquid crystal display panel; wherein the content of the first and second substances,
the optical film layer is positioned on one side, close to the liquid crystal light control panel, of the third protective film layer, or the optical film layer is positioned between the third protective film layer and the second polyvinyl alcohol film layer, or the optical film layer is positioned between the second polyvinyl alcohol film layer and the fourth protective film layer, or the optical film layer is positioned on one side, close to the liquid crystal display panel, of the fourth protective film layer.
Optionally, in a specific implementation, in the display device provided in the embodiment of the present invention, the liquid crystal light control panel includes an opposite substrate disposed opposite to the array substrate, and a substrate material of the opposite substrate is a polymer material; and the substrate base plate of the opposite base plate is reused as the third protective film layer.
Optionally, in a specific implementation, in the above display device provided in an embodiment of the present invention, the light source is located on a side surface of the light guide plate, and the second polarizer is located between the light source and the light guide plate, or the second polarizer is located between the light guide plate and the liquid crystal light control panel.
Optionally, in a specific implementation, in the display device provided in the embodiment of the present invention, the light guide plate is made of a glass material or a polymer material.
Optionally, in a specific implementation, in the display device provided in the embodiment of the present invention, the light guide plate is made of a polymer material, and the second polarizer is in contact with the light guide plate;
the second polarizer comprises a fifth protective film layer, a third polyvinyl alcohol film layer and a sixth protective film layer which are arranged in a stacked mode along the direction far away from the light guide plate; the light guide plate is reused as the fifth protective film layer.
Optionally, in a specific implementation manner, in the display device provided in the embodiment of the present invention, the high molecular material is polyethylene terephthalate, polymethyl methacrylate, or a cyclic olefin polymer.
Optionally, in specific implementation, in the display device provided in the embodiment of the present invention, the liquid crystal display panel includes a plurality of first pixel units arranged in an array, the liquid crystal light control panel includes a plurality of second pixel units arranged in an array, and a number of the first pixel units is greater than or equal to a number of the second pixel units.
The embodiment of the invention has the following beneficial effects:
the display device provided by the embodiment of the invention designs a double-layer liquid crystal display device comprising a liquid crystal light control panel and a liquid crystal display panel, wherein the liquid crystal light control panel is used for controlling the light emitting amount of each pixel, the liquid crystal display panel is used for displaying, because the light inlet surface and the light outlet surface of the liquid crystal light control panel and the liquid crystal display panel are both provided with polaroids, the light emitted from a light source needs to sequentially pass through the polaroids of the light inlet surface and the light outlet surface of the liquid crystal light control panel and the liquid crystal display panel, and in a dark state, because the light of the light source is shielded by the polaroids of the light inlet surface and the light outlet surface of the liquid crystal light control panel and the liquid crystal display panel for multiple times, the light emitted from the display device in the dark state can be greatly reduced, so that the dark state brightness of the whole display device is reduced, the contrast is improved, and simultaneously, because the light, thereby improving the yield and the picture quality of the product; in addition, the light guide plate is used as the substrate base plate of the liquid crystal light control panel, so that the process of independently manufacturing a layer of substrate base plate can be reduced, the thickness of the display device is reduced, and the cost is reduced; and can carry out accuracy or certain within range matching with liquid crystal light control panel and liquid crystal display panel according to the demand to promote the picture display effect, improved the yield greatly.
Drawings
Fig. 1 to 12 are schematic structural views of a display device with a side-in light source according to an embodiment of the present invention;
fig. 13-24 are schematic structural views of a display device with a direct-type light source according to an embodiment of the invention;
fig. 25 is a schematic view of a pixel arrangement structure of a display device according to an embodiment of the invention;
fig. 26 is a second schematic view of a pixel arrangement structure of a display device according to an embodiment of the invention;
fig. 27 is a third schematic view of a pixel arrangement structure in the display device according to the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of a display device according to an embodiment of the present invention are described in detail below with reference to the accompanying drawings.
The thicknesses and shapes of the various layers in the drawings are not intended to reflect the true scale of the display device and are merely illustrative of the present invention.
An embodiment of the present invention provides a display device, as shown in fig. 1 to 12, including: the liquid crystal display device comprises a liquid crystal display panel 100, a liquid crystal light control panel 200, a polarization structure 300 and a first polarizer 1, wherein the liquid crystal display panel 100 and the liquid crystal light control panel 200 are arranged in a stacked mode; wherein the content of the first and second substances,
the liquid crystal light control panel 200 includes an array substrate at a side remote from the liquid crystal display panel 100; the substrate of the array substrate is a light guide plate 10; a light source 20 and a second polarizer 2 are disposed at one side of the light guide plate 10.
Therefore, the above-mentioned display device designs the double-layer liquid crystal display device including the liquid crystal display panel 100 and the liquid crystal light control panel 200, wherein the liquid crystal light control panel 200 is used for controlling the light output amount of each pixel, the liquid crystal display panel 100 is used for displaying images, because the light input surface and the light output surface of the liquid crystal light control panel 200 and the liquid crystal display panel 100 are both provided with the polarizer, the light emitted from the light source 20 needs to pass through the polarizers of the light input surface and the light output surface of the liquid crystal light control panel 200 and the liquid crystal display panel 100 in sequence, during the dark state, because the light of the light source 20 is shielded by the polarizers of the light input surface and the light output surface of the liquid crystal light control panel 200 and the liquid crystal display panel 100 for multiple times, the light emitted from the inside of the display device during the dark state can be greatly reduced, thereby reducing the dark state brightness of the, the problems of dark color cast and other dark Mura can not be perceived, thereby improving the yield and the picture quality of products; in addition, the light guide plate 10 in the backlight module is used as the substrate of the liquid crystal light control panel 200, so that the process of independently manufacturing a layer of substrate can be reduced, the thickness of the display device is reduced, and the cost is reduced; and can match liquid crystal light control panel 200 and liquid crystal display panel 100 in accurate or certain limit according to the demand to promote the picture display effect, improved the yield greatly.
It should be noted that the liquid crystal light control panel may control the light transmittance in the predetermined area, and for the portion with higher picture brightness (gray scale) in the liquid crystal display panel, the light transmittance of the corresponding area of the liquid crystal light control panel is also high, allowing more light from the backlight module to pass through, and for the portion with lower picture brightness in the liquid crystal display panel, the light transmittance of the corresponding area of the liquid crystal light control panel is also low, allowing less light from the backlight module to pass through, thereby achieving the purposes of improving the contrast of the display picture and enhancing the display image quality. The liquid crystal light control panel can realize the division of the light control unit with higher density and precision, the light output quantity of each area is accurately controlled, and the manufacturing process of the liquid crystal light control panel is easy to realize.
In practical implementation, in the above display device provided by the embodiment of the present invention, as shown in fig. 1 to 12, the liquid crystal light control panel 200 includes an array substrate and an opposite substrate which are oppositely disposed, and a liquid crystal layer 21 filled between the array substrate and the opposite substrate; the opposite substrate includes a substrate 22 (e.g., a glass substrate) contacting the third polarizer 3, and a metal wire layer 23 (e.g., an ESD protection structure) on a side of the substrate 22 facing the array substrate, and the opposite substrate is not provided with a black matrix and a color resist layer because the liquid crystal light control panel 200 is used only for controlling the amount of light emitted without displaying; the substrate of the array substrate is a light guide plate 10, a metal film layer positioned on one side of the light guide plate 20 facing to the opposite substrate and a pixel structure (24). The liquid crystal display panel 100 includes an array substrate and an opposite substrate (color filter substrate) which are arranged oppositely, and a liquid crystal layer 11 filled between the array substrate and the color filter substrate; the color film substrate comprises a substrate 12 (such as a glass substrate) contacted with the first polarizer 1, a metal wire layer positioned on one side of the substrate 12 far away from the first polarizer 1, a black matrix and a color resistance layer (13); the array substrate comprises a substrate 14 (such as a glass substrate) in contact with the second polarizer 2, a metal film layer on the side of the substrate 14 facing the first polarizer 1, and a pixel structure (15).
It should be noted that the specific structures of the liquid crystal display panel 100 and the liquid crystal light control panel 200 in fig. 1 to fig. 12 are the same as those in the related art, and all the structures are not specifically illustrated in fig. 1 to fig. 12, which are only for schematically illustrating that the liquid crystal light control panel 200 adopts the light guide plate 10 in the backlight module as the substrate of the array substrate thereof, and the related film layers (such as the optical film layer 30 and the like which are referred to later) in the backlight module are rearranged, so that the technical problem of the present invention is solved on the basis of reducing the thickness of the display device.
Optionally, in specific implementation, in the display device provided in the embodiment of the present invention, as shown in fig. 1, the polarization structure 300 includes a third polarizer 3, an optical film 30, and a fourth polarizer 4, which are stacked, where the third polarizer 3 is close to the liquid crystal light control panel 200, and the fourth polarizer 4 is close to the liquid crystal display panel 100. Through setting up optics rete 30 between third polaroid 3 and fourth polaroid 4, can solve in liquid crystal light control panel 200 and the liquid crystal display panel 100 because the mole line problem that similar grid pattern caused, and need not additionally to increase the rete that is used for eliminating the mole line specially and reach the effect of better elimination mole line, further promote product yield and quality to promote the whole competitiveness of product.
The light source 20, the light guide plate 10 and the optical film layer 30 form a backlight module of the display device according to the embodiment of the invention.
Alternatively, in practical implementation, in the above display device provided in the embodiment of the present invention, as shown in fig. 2, the third polarizer 3 includes a first protective film layer 31, a first polyvinyl alcohol film layer 32, and a second protective film layer 33, which are stacked in a stacked manner; the first protective film layer 31 is close to the liquid crystal light control panel 200, and the second protective film layer 32 is close to the liquid crystal display panel 100;
the liquid crystal light control panel 200 includes an opposite substrate disposed opposite to the array substrate, and since the opposite substrate mainly functions as a metal wire layer and plays a role of sealing and supporting the liquid crystal layer, the substrate 22 of the opposite substrate may be made of glass material or polymer material (non-glass material);
specifically, as shown in fig. 3, when the material of the substrate 22 of the opposite substrate is a polymer material, the substrate 22 of the opposite substrate may be reused as the first protective film layer 31. Since the third polarizer 3 is in contact with the opposite substrate of the liquid crystal light control panel 200, when the substrate 22 of the opposite substrate is made of a polymer material, the substrate 22 of the opposite substrate can be reused as the first protective film 31 on the side of the third polarizer 3 close to the liquid crystal light control panel 200, so that the number of the first protective film 31 can be reduced, the film thickness of the display device can be further reduced, and the manufacturing process and cost can be further reduced.
Since the polarization directions (light absorption axes) of the third polarizer 3 and the fourth polarizer 4 are the same in the embodiments shown in fig. 2 and 3, the third polarizer 3 and the fourth polarizer 4 may be the same polarizer, and the optical film 30 needs to be disposed in the same polarizer. Therefore, in practical implementation, in the above display device provided by the embodiment of the present invention, as shown in fig. 4, the polarization structure 300 may include a fifth polarizer 5 and an optical film 30, and fig. 4 is only for schematically illustrating a structure of the optical film 30 located in the fifth polarizer 5 and does not show a real structure; as shown in fig. 5 to 8, the fifth polarizer 5 includes a third protective film layer 51, a second polyvinyl alcohol film layer 52, and a fourth protective film layer 53 which are stacked; the third protective film layer 51 is close to the liquid crystal light control panel 200, and the fourth protective film layer 53 is close to the liquid crystal display panel 100; wherein the content of the first and second substances,
specifically, as shown in fig. 5, the optical film layer 30 may be located on the side of the third protective film layer 51 near the liquid crystal light control panel 200, or as shown in fig. 6, the optical film layer 30 may be located between the third protective film layer 51 and the second polyvinyl alcohol film layer 52, or as shown in fig. 7, the optical film layer 30 may be located between the second polyvinyl alcohol film layer 52 and the fourth protective film layer 53, or as shown in fig. 8, the optical film layer 30 may be located on the side of the fourth protective film layer 53 near the liquid crystal display panel 100.
Alternatively, in practical implementation, in the above display device provided in the embodiment of the present invention, as shown in fig. 9 to 12, the liquid crystal light control panel 200 includes an opposite substrate disposed opposite to the array substrate, and since the opposite substrate mainly functions as a metal wire layer and plays a role of sealing and supporting the liquid crystal layer, the substrate 22 of the opposite substrate may be made of a glass material or a polymer material (non-glass material);
when the substrate 22 of the opposite substrate is made of a polymer material, the substrate 22 of the opposite substrate is reused as the third protective film 51, so that the number of the third protective film 51 can be reduced, the thickness of the display device can be further reduced, and the manufacturing process and the cost can be further reduced.
Alternatively, in practical implementation, in the above display device provided in the embodiment of the present invention, as shown in fig. 1 to 12, the light source 20 is located on a side surface of the light guide plate 10, that is, the light source 20 shown in fig. 1 to 12 is of a side-in type, the second polarizer 2 may be located between the light source 20 and the light guide plate 10, or the second polarizer 2 may be located between the light guide plate 10 and the liquid crystal light control panel 200. Specifically, in the above two arrangements of the second polarizer 2, the second arrangement is preferably the first arrangement in order to reduce the material consumption of the second polarizer 2, because the second polarizer 2 is located between the light guide plate 10 and the liquid crystal light control panel 200, and thus the size of the second polarizer 2 is larger, and the size of the second polarizer 2 arranged in the first arrangement is smaller. Therefore, fig. 1 to 12 illustrate the embodiment of the present invention in which the second polarizer 2 is located between the light source 20 and the light guide plate 10.
Optionally, in a specific implementation, in the display device provided in the embodiment of the present invention, the material of the light guide plate may be a glass material or a polymer material.
Further, in the display device provided in the embodiment of the present invention, as shown in fig. 1 to 12, the light guide plate 10 is made of a polymer material, and the second polarizer 2 is in contact with the light guide plate 10;
in the direction away from the light guide plate 10, the second polarizer 2 includes a fifth protective film layer, a third polyvinyl alcohol film layer, and a sixth protective film layer (the structure is similar to the third polarizer); the light guide plate 10 is reused as a fifth protective film layer. Because the second polarizer 2 is in contact with the light guide plate 10, when the light guide plate 10 is made of a polymer material, the light guide plate 10 can be reused as a fifth protective film layer, so that the number of fifth protective film layers can be reduced, and the manufacturing process and cost can be further reduced.
Alternatively, in practical implementation, in the display device provided in the embodiment of the present invention, the Polymer material may be Polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), or Cyclic Olefin Polymer (COP). Specifically, these materials themselves may be used as a 0 phase difference or high phase difference material (material of a protective film layer) of the polarizer, and thus, according to the above description, a polyvinyl alcohol film layer (PVA) may be directly printed on the inner or outer surface thereof to be used as the polarizer.
In the display device provided in the embodiment of the present invention, as shown in fig. 1 to fig. 3, the polarization directions (light absorption axes) of the first polarizer 1 and the fourth polarizer 4 are perpendicular to each other, the polarization directions (light absorption axes) of the third polarizer 3 and the second polarizer 2 are perpendicular to each other, and the polarization directions (light absorption axes) of the third polarizer 3 and the fourth polarizer 4 are the same. As shown in fig. 4 to 12, the polarization directions (light absorption axes) of the first polarizer 1 and the fifth polarizer 5 are perpendicular to each other, and the polarization directions (light absorption axes) of the fifth polarizer 5 and the second polarizer 2 are perpendicular to each other.
Specifically, the first protective film layer 31, the third protective film layer 51, and the fifth protective film layer may be single-layer coated pressure-sensitive adhesives, which can protect the polarizer body from being damaged by external force; the polarizing function of the first polyvinyl alcohol film layer 32, the second polyvinyl alcohol film layer 52 and the third polyvinyl alcohol film layer (i.e. PVA film) is the core part of the polarizer where each is located, and determines key indexes of the polarizer such as polarizing performance, transmittance and color tone; the second protective film 33, the fourth protective film 53, and the sixth protective film may be made of one or any combination of triacetyl cellulose (TAC), polyethylene terephthalate (PET), Acrylic acid (Acrylic), and cyclic olefin polymer, and are not limited herein, and the second protective film 33, the fourth protective film 53, and the sixth protective film are supporting bodies of PVA films of the polarizer where the films are located, so as to ensure that the PVA films do not retract, protect the PVA films from being affected by moisture and ultraviolet light, and ensure weather resistance of the polarizer.
Specifically, in the embodiment of the present invention, since the fifth protective film layer of the second polarizer 2 may be reused as the light guide plate 10, the first protective film layer 31 of the third polarizer 1 may be reused as the substrate 22 of the opposite substrate in the liquid crystal light control panel 200, and the third protective film layer 51 of the fifth polarizer may be reused as the substrate 22 of the opposite substrate in the liquid crystal light control panel 200, it has been explained that, of course, the first polarizer 1 and the fourth polarizer 4 both include the same structure as the above three polarizers, and may be reused as other films when other films can be reused.
Specifically, as shown in fig. 1 to 12, when the light source 20 is located on the side of the light guide plate 10, assuming that the second polarizer 2 is attached to two sides of the light guide plate 10 (only one second polarizer 2 is illustrated in the figures), and the absorption axes are the same, in the embodiment of the present invention, the second polarizer 2 is disposed on both sides of the light guide plate 10, and of course, the second polarizer 2 may be disposed on only one side of the light guide plate 10, and the light emitted from the light source 20 is changed into linearly polarized light by the second polarizer 2 and enters the light guide plate 10, and then the rotation state of the liquid crystal is controlled by controlling the voltage of the array substrate in the liquid crystal light control panel 200, so as to change the rotation degree of the linearly polarized light entering the liquid crystal light control panel 200, thereby controlling the amount of the linearly polarized light emitted from the third polarizer 3 or the. Specifically, as shown in fig. 1 to fig. 3, light emitted from the liquid crystal light control panel 200 passes through the third polarizer 3, the optical film layer 30 and the fourth polarizer 4 in sequence, is enhanced, and then directly enters the liquid crystal display panel 100 and then enters the eyes of an observer; in the dark state, the light emitted from the light source 20 in fig. 1-3 is shielded by the liquid crystal light control panel 200 and the polarizers on the upper and lower surfaces of the liquid crystal display panel 100 for 4 times, so that the light emission in the dark state is greatly reduced, the product contrast is improved, and meanwhile, because the light emission amount is reduced, the dark state color cast and other dark state Mura problems cannot be perceived, the yield of the product and the picture quality are improved. As shown in fig. 4 to 12, since the functions of the optical film layer 30 (prism sheet and diffusion sheet) are combined to the fifth polarizer 5, the number of the optical films is not increased, and the number of the polarizers originally disposed on the lower surface of the liquid crystal display panel 100 can be reduced; the light emitted from the liquid crystal light control panel 200 is enhanced by the optical film layer 30 on the fifth polarizer 5, and then directly enters the liquid crystal display panel 100 and then enters the eyes of an observer; in the dark state, the light emitted from the light source 20 in fig. 4-12 is shielded by the liquid crystal light control panel 200 and the polarizers on the upper and lower surfaces of the liquid crystal display panel 100 for 3 times, so that the light emission in the dark state is greatly reduced, the product contrast is improved, and meanwhile, because the light emission amount is reduced, the dark state color cast and other dark state Mura problems cannot be perceived, the yield of the product and the picture quality are improved.
Optionally, in a specific implementation, in the display device provided in the embodiment of the present invention, as shown in fig. 1 to 12, each polarizer may be subjected to a surface treatment as needed (atomized particles are added, and the atomized particles perform a uniform light mixing effect on polarized light of different colors to a certain extent, so as to eliminate a rainbow streak phenomenon).
Alternatively, in practical implementation, in the above-mentioned display device provided in the embodiment of the present invention, as shown in fig. 1 to 12, the optical film layer 30 specifically includes a diffusion sheet and a prism sheet (not shown) which are stacked, and the diffusion sheet and the prism sheet function to change the point light source into a uniform surface light source.
Optionally, in a specific implementation, as shown in fig. 1 to 12, the display device provided in the embodiment of the present invention further includes a housing 400 for fixing the backlight module, the liquid crystal display panel 100, and the liquid crystal light control panel 200.
It should be noted that, in the display device shown in fig. 1 to 12 provided in the embodiment of the present invention, all the light sources 20 are located on the side surface of the light guide plate 10 as an example, and of course, in the specific implementation, the light sources 20 may also be in a direct type, so in the display device provided in the embodiment of the present invention, as shown in fig. 13 to 24, the light sources 20 may be located on the side of the light guide plate 10 away from the liquid crystal display panel 100, that is, the light sources 20 shown in fig. 13 to 24 are in a direct type, and the second polarizer 2 is located between the light guide plate 10 and the light sources 20 and is in contact with the light guide plate 10. Specifically, the direct type backlight source includes a plurality of point light sources (for example, LEDs) and a diffusion plate arranged in parallel, and light emitted from the point light sources is homogenized by the diffusion layer and then enters the liquid crystal display panel for display.
It should be noted that the structure of the display device with the direct-illumination light source shown in fig. 13 to 24 is different from the structure of the display device with the side-illumination light source shown in fig. 1 to 12 only in the positions of the light source 20 and the second polarizer 2, and the rest structures (such as the multiplexing situation of the protective film of each polarizer), the film materials and the functions are the same, so that the structure of the direct-illumination light source is changed from fig. 1 to 12 as shown in fig. 13 to 24, and the specific film structure and the function principle are not repeated, which is referred to the structural description of fig. 1 to 12.
Specifically, the principle of reducing the amount of the emergent light in the dark state of the display device shown in fig. 13 to 24 is described with reference to fig. 1 to 12, and the difference is only that the positions of the light source 20 and the second polarizer 2 are different, which is not described herein again.
Alternatively, in specific implementation, in the above display device provided by the embodiment of the present invention, as shown in fig. 25 and 26, the liquid crystal display panel 100 includes a plurality of first pixel units P1 arranged in an array, and the plurality of first pixel units P1 is defined by the intersection of the plurality of first gate lines 01 and the plurality of first data lines 02; the liquid crystal light control panel 200 includes a plurality of second pixel cells P2 arranged in an array, the plurality of second pixel cells P2 being defined by the intersection of the plurality of first signal lines 03 and the plurality of second signal lines 04; wherein the number of the first pixel units P1 is greater than or equal to the number of the second pixel units P2. Specifically, as shown in fig. 25, the number of the first pixel units P1 is equal to the number of the second pixel units P2, that is, the liquid crystal display panel 100 and the liquid crystal light control panel 200 adopt an arrangement mode in which the ratio of pixels is 1:1, so that the metal film layers and the pixel structures on the surfaces of the array substrates in the liquid crystal display panel 100 and the liquid crystal light control panel 200 can realize accurate etching and alignment (micron level), because the sizes of the pixels in the two layers of panels are the same, the emergent light condition of each pixel can be accurately controlled, and the high-precision control of the brightness is improved, so that the high-precision contrast of each pixel can be realized, the dark-state emergent light is greatly reduced, the contrast is improved, and the picture quality and the product yield are improved; as shown in fig. 26, the number of the first pixel units P1 is 2 times that of the second pixel units P2, that is, the liquid crystal display panel 100 and the liquid crystal light control panel 200 adopt an arrangement mode in which the pixel ratio is 1:2, that is, the metal film layers and the pixel structures on the surfaces of the array substrates in the liquid crystal display panel 100 and the liquid crystal light control panel 200 may not be precisely etched and aligned, and may be made into a ratio of 1:2, 1:4, 1:8 or other ratios according to product positioning, so that the product contrast may be improved, the pixel arrangement of the liquid crystal light control panel 200 may be reduced, the manufacturing process may be simplified, and the cost may be reduced.
Optionally, in specific implementation, when performing a contrast test, only the pixel at the center of the panel is detected, so as to further reduce the pixel arrangement of the liquid crystal light control panel, simplify the manufacturing process, and reduce the cost, in the display device provided in the embodiment of the present invention, as shown in fig. 27, the liquid crystal display panel 100 includes a plurality of first pixel units P1 arranged in an array, and the plurality of first pixel units P1 are defined by the plurality of first gate lines 01 and the plurality of first data lines 02 crossing each other; the liquid crystal light control panel 200 may include only one second pixel cell P2 located at the center of the liquid crystal light control panel 200.
In a specific implementation, the display device provided in the embodiment of the present invention may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the invention. The display device can be implemented by referring to the above embodiments of the display panel, and repeated descriptions are omitted.
The display device provided by the embodiment of the invention designs a double-layer liquid crystal display device comprising a liquid crystal light control panel and a liquid crystal display panel, wherein the liquid crystal light control panel is used for controlling the light emitting amount of each pixel, the liquid crystal display panel is used for displaying, because the light inlet surface and the light outlet surface of the liquid crystal light control panel and the liquid crystal display panel are both provided with polaroids, the light emitted from a light source needs to sequentially pass through the polaroids of the light inlet surface and the light outlet surface of the liquid crystal light control panel and the liquid crystal display panel, and in a dark state, because the light of the light source is shielded by the polaroids of the light inlet surface and the light outlet surface of the liquid crystal light control panel and the liquid crystal display panel for multiple times, the light emitted from the display device in the dark state can be greatly reduced, so that the dark state brightness of the whole display device is reduced, the contrast is improved, and simultaneously, because the light, thereby improving the yield and the picture quality of the product; in addition, the light guide plate is used as the substrate base plate of the liquid crystal light control panel, so that the process of independently manufacturing a layer of substrate base plate can be reduced, the thickness of the display device is reduced, and the cost is reduced; and can carry out accuracy or certain within range matching with liquid crystal light control panel and liquid crystal display panel according to the demand to promote the picture display effect, improved the yield greatly.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A display device, comprising: the liquid crystal display panel and the liquid crystal light control panel are stacked, the polarization structure is positioned between the liquid crystal display panel and the liquid crystal light control panel, and the first polarizer is positioned on one side, away from the liquid crystal light control panel, of the liquid crystal display panel; wherein the content of the first and second substances,
the liquid crystal light control panel comprises an array substrate which is far away from one side of the liquid crystal display panel; the substrate of the array substrate is a light guide plate; and a light source and a second polarizer are arranged on one side of the light guide plate.
2. The display device of claim 1, wherein the polarizing structure comprises a third polarizer, an optical film layer, and a fourth polarizer, which are stacked, the third polarizer being adjacent to the liquid crystal light control panel, and the fourth polarizer being adjacent to the liquid crystal display panel.
3. The display device according to claim 2, wherein the third polarizer comprises a first protective film layer, a first polyvinyl alcohol film layer, and a second protective film layer which are stacked; the first protective film layer is close to the liquid crystal light control panel, and the second protective film layer is close to the liquid crystal display panel;
the liquid crystal light control panel comprises an opposite substrate arranged opposite to the array substrate, and the substrate material of the opposite substrate is a high polymer material; and the substrate base plate of the opposite base plate is reused as the first protective film layer.
4. The display device of claim 1, wherein the polarizing structure comprises a fifth polarizer and an optical film layer; the fifth polarizer comprises a third protective film layer, a second polyvinyl alcohol film layer and a fourth protective film layer which are arranged in a stacked mode; the third protective film layer is close to the liquid crystal light control panel, and the fourth protective film layer is close to the liquid crystal display panel; wherein the content of the first and second substances,
the optical film layer is positioned on one side, close to the liquid crystal light control panel, of the third protective film layer, or the optical film layer is positioned between the third protective film layer and the second polyvinyl alcohol film layer, or the optical film layer is positioned between the second polyvinyl alcohol film layer and the fourth protective film layer, or the optical film layer is positioned on one side, close to the liquid crystal display panel, of the fourth protective film layer.
5. The display device according to claim 4, wherein the liquid crystal light control panel comprises an opposite substrate arranged opposite to the array substrate, and a substrate material of the opposite substrate is a high polymer material; and the substrate base plate of the opposite base plate is reused as the third protective film layer.
6. The display device of claim 1, wherein the light source is located at a side of the light guide plate, the second polarizer is located between the light source and the light guide plate, or the second polarizer is located between the light guide plate and the liquid crystal light control panel.
7. The display device according to claim 6, wherein the light guide plate is made of a glass material or a polymer material.
8. The display device according to claim 7, wherein the light guide plate is made of a polymer material, and the second polarizer is in contact with the light guide plate;
the second polarizer comprises a fifth protective film layer, a third polyvinyl alcohol film layer and a sixth protective film layer which are arranged in a stacked mode along the direction far away from the light guide plate; the light guide plate is reused as the fifth protective film layer.
9. The display device according to claim 3, 5 or 8, wherein the polymer material is polyethylene terephthalate, polymethyl methacrylate or a cyclic olefin polymer.
10. The display device of claim 1, wherein the liquid crystal display panel comprises a plurality of first pixel cells arranged in an array, wherein the liquid crystal light control panel comprises a plurality of second pixel cells arranged in an array, and wherein the number of the first pixel cells is greater than or equal to the number of the second pixel cells.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766737A (en) * | 2020-07-30 | 2020-10-13 | 京东方科技集团股份有限公司 | Display module and display device |
| CN112327529A (en) * | 2020-11-30 | 2021-02-05 | 厦门天马微电子有限公司 | Display device and method for driving display device |
| CN112327549A (en) * | 2020-11-05 | 2021-02-05 | 北海惠科光电技术有限公司 | Display panel and display device |
| CN112558367A (en) * | 2020-11-04 | 2021-03-26 | 北海惠科光电技术有限公司 | Display screen, driving method thereof and display device |
| CN113934038A (en) * | 2021-10-27 | 2022-01-14 | 京东方科技集团股份有限公司 | Display panel and display device |
| WO2022036646A1 (en) * | 2020-08-20 | 2022-02-24 | 重庆康佳光电技术研究院有限公司 | Display panel and display device containing same |
| CN114488606A (en) * | 2020-10-23 | 2022-05-13 | 合肥京东方显示技术有限公司 | Display device |
| CN114859603A (en) * | 2022-05-31 | 2022-08-05 | 广西民族大学 | LCD display screen and definition detection method thereof |
| CN114902324A (en) * | 2020-11-12 | 2022-08-12 | 京东方科技集团股份有限公司 | Display method, display device, and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101059619A (en) * | 2006-04-18 | 2007-10-24 | Nec液晶技术株式会社 | Liquid crystal display device |
| CN104503165A (en) * | 2014-12-30 | 2015-04-08 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN105785638A (en) * | 2016-05-09 | 2016-07-20 | 深圳市华星光电技术有限公司 | Lcd display |
| CN108957841A (en) * | 2018-08-29 | 2018-12-07 | 京东方科技集团股份有限公司 | Display device |
| CN109298573A (en) * | 2018-11-30 | 2019-02-01 | 青岛海信电器股份有限公司 | A kind of display panel and display device |
| CN109471300A (en) * | 2018-12-06 | 2019-03-15 | 青岛海信电器股份有限公司 | A kind of display panel and display device |
-
2019
- 2019-10-18 CN CN201910995848.5A patent/CN110596947A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101059619A (en) * | 2006-04-18 | 2007-10-24 | Nec液晶技术株式会社 | Liquid crystal display device |
| CN104503165A (en) * | 2014-12-30 | 2015-04-08 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN105785638A (en) * | 2016-05-09 | 2016-07-20 | 深圳市华星光电技术有限公司 | Lcd display |
| CN108957841A (en) * | 2018-08-29 | 2018-12-07 | 京东方科技集团股份有限公司 | Display device |
| CN109298573A (en) * | 2018-11-30 | 2019-02-01 | 青岛海信电器股份有限公司 | A kind of display panel and display device |
| CN109471300A (en) * | 2018-12-06 | 2019-03-15 | 青岛海信电器股份有限公司 | A kind of display panel and display device |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766737B (en) * | 2020-07-30 | 2023-11-03 | 京东方科技集团股份有限公司 | Display module and display device |
| CN111766737A (en) * | 2020-07-30 | 2020-10-13 | 京东方科技集团股份有限公司 | Display module and display device |
| WO2022036646A1 (en) * | 2020-08-20 | 2022-02-24 | 重庆康佳光电技术研究院有限公司 | Display panel and display device containing same |
| CN114488606A (en) * | 2020-10-23 | 2022-05-13 | 合肥京东方显示技术有限公司 | Display device |
| CN112558367A (en) * | 2020-11-04 | 2021-03-26 | 北海惠科光电技术有限公司 | Display screen, driving method thereof and display device |
| CN112327549A (en) * | 2020-11-05 | 2021-02-05 | 北海惠科光电技术有限公司 | Display panel and display device |
| CN114902324A (en) * | 2020-11-12 | 2022-08-12 | 京东方科技集团股份有限公司 | Display method, display device, and storage medium |
| CN114902324B (en) * | 2020-11-12 | 2023-10-10 | 京东方科技集团股份有限公司 | Display method, display device and storage medium |
| CN112327529B (en) * | 2020-11-30 | 2022-10-28 | 厦门天马微电子有限公司 | Display device and method for driving display device |
| CN112327529A (en) * | 2020-11-30 | 2021-02-05 | 厦门天马微电子有限公司 | Display device and method for driving display device |
| CN113934038A (en) * | 2021-10-27 | 2022-01-14 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN113934038B (en) * | 2021-10-27 | 2023-10-20 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN114859603A (en) * | 2022-05-31 | 2022-08-05 | 广西民族大学 | LCD display screen and definition detection method thereof |
| CN114859603B (en) * | 2022-05-31 | 2024-05-24 | 福州恒美光电材料有限公司 | LCD display screen and definition detection method thereof |
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