CN113589580B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113589580B CN113589580B CN202110863389.2A CN202110863389A CN113589580B CN 113589580 B CN113589580 B CN 113589580B CN 202110863389 A CN202110863389 A CN 202110863389A CN 113589580 B CN113589580 B CN 113589580B
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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
- G02F1/133553—Reflecting elements
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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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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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
- G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
- G02F1/133565—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements inside the LC elements, i.e. between the cell substrates
Abstract
The application discloses display panel and display device includes: the display device comprises a first substrate, a second substrate, a first reflection structure, a second reflection structure, a pixel and a color resistor. The first substrate is arranged on one side of a light-emitting surface of the display panel, the second substrate is arranged opposite to the first substrate, the first reflection structure is arranged on one side of the first substrate close to the second substrate, the plurality of pixels are arranged on one side of the second substrate close to the first substrate, the first reflection structure is arranged between every two adjacent pixels, each pixel comprises a second reflection structure arranged on the second substrate, a Bragg reflector arranged on the second reflection structure and a color resistor arranged between the first reflection structure and the Bragg reflector, the Bragg reflectors are of at least two types, and the Bragg reflectors of different types are used for reflecting light rays of different wave bands; the color resistor has at least two different colors and is arranged corresponding to the Bragg reflector. This application improves display device's color purity through above mode.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display device.
Background
The display device has the advantages of thin body, electricity saving, no radiation and the like, and is widely applied. Conventional Display devices mainly include Liquid Crystal Displays (LCDs) and Organic Light Emitting Displays (OLEDs).
The color of the LCD is realized by means of a Color Filter (CF). In the existing color filter, the transmission peak of the color resistance material is wider, so the purity of the light emitted by the pixel is reduced, and the color purity is limited and difficult to meet the requirements of users.
Therefore, it is necessary to search for new technical solutions to improve the color purity of the liquid crystal display device.
Disclosure of Invention
The application aims to provide a display panel and a display device, and the color purity of the display panel is improved.
The application discloses display panel includes: the first substrate is arranged on one side of the light emitting surface of the display panel; a second substrate disposed opposite to the first substrate; the first reflecting structure is arranged on one side of the first substrate close to the second substrate; the plurality of pixels are arranged on one side, close to the first substrate, of the second substrate, and the first reflecting structure is arranged between every two adjacent pixels; the pixel comprises a second reflecting structure arranged on the second substrate and a Bragg reflector arranged on the second reflecting structure; and a color resistor disposed between the first reflective structure and the Bragg mirror; the Bragg reflector has at least two types, and the Bragg reflectors of different types are used for reflecting light rays of different wave bands; the color resistors have at least two different colors, the color resistors are arranged corresponding to the Bragg reflector, and the color of the color resistors correspondingly arranged corresponds to the wave band of the light reflected by the Bragg reflector.
Optionally, the first substrate is an array substrate, the second substrate is a color film substrate, the first reflection structure includes a plurality of reflection protrusions made of a metal material, and the size of the second reflection structure is equivalent to that of the bragg reflector; at least one part of the light reflected by the reflecting bulge sequentially passes through the color resistor and the Bragg reflector, is reflected by the second reflecting structure, then passes through the Bragg reflector and is emitted from one side of the first substrate far away from the second substrate to display a picture.
Optionally, the color resistors include a red color resistor, a green color resistor, and a blue color resistor, and the red color resistor, the green color resistor, and the blue color resistor are respectively disposed on the second reflective structure.
Optionally, the color resistor includes a first color resistor and a second color resistor, the first color resistor is disposed above the first reflective structure, the second color resistor is disposed on the second reflective structure, and the first color resistor and the second color resistor include a red color resistor, a green color resistor, and a blue color resistor.
The color of the first color resistor is the same as that of one of the two adjacent second color resistors, and each first color resistor is correspondingly provided with the second color resistors with the same color.
Optionally, the color resistors include a red color resistor, a green color resistor, and a blue color resistor, and the red color resistor, the green color resistor, and the blue color resistor are respectively disposed on the first reflective structure.
Optionally, the display panel further includes a polarizer and a phosphor layer, the polarizer is disposed on a side of the second substrate away from the first substrate, and a position of the polarizer corresponding to the pixel is hollowed; and fluorescent powder is arranged in the fluorescent powder layer, the fluorescent powder layer is arranged between the second substrate and the second reflection structure, and the size of the fluorescent powder layer is equivalent to that of the second reflection structure.
Optionally, the phosphor layer is correspondingly disposed in 10% to 30% of the total number of the pixels.
Optionally, a color resistance color of the first color resistance is the same as a color resistance color of the second color resistance of one of the two adjacent pixels, and each color resistance of the first color resistance has a color resistance of the second color resistance of a corresponding color.
Optionally, the first reflective structure and the second reflective structure are made of a material including silver, a stack of silver and magnesium, and a stack of silver and aluminum; wherein, when the first and second reflective structures are a single layer of metallic silver, the single layer of metallic silver has a thickness greater than 500nm; the first reflection structure and the second reflection structure are laminated bodies of silver and magnesium, wherein the thickness of the magnesium layer is more than 100nm, and the thickness of the silver layer is more than 500nm; or the first reflection structure and the second reflection structure are a laminated body of silver and aluminum, wherein the thickness of the aluminum layer is more than 100nm, and the thickness of the silver layer is more than 500nm.
Optionally, the present application further provides a display device, which includes a backlight module, and further includes any one of the above display panels; the backlight module is arranged on one side close to the light incident surface of the display panel.
Compared with the scheme that the LCD panel in the prior art is insufficient in color purity, the LCD panel is characterized in that the first reflecting structure is arranged on the first substrate, the second reflecting structure and the Bragg reflector are arranged on the second substrate, and the color resistor is arranged between the first reflecting structure and the Bragg reflector, so that when light emitted by the backlight module irradiates the first reflecting structure, the light is reflected and sequentially passes through the color resistor and the Bragg reflector, is reflected by the second reflecting structure, passes through the Bragg reflector and is emitted from one side of the first substrate, which is far away from the second substrate, to display a picture; wherein, because colour drag and Bragg reflector all have the effect that improves color purity, therefore, after colour drag and Bragg reflector purification, the purity of the light of various colours obtains obviously promoting, and then makes the color purity of display panel display frame can improve, has strengthened display panel's display effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a schematic view of a display panel of a first embodiment of the present application;
FIG. 2 is a schematic diagram of a Bragg mirror according to a first embodiment of the present application;
FIG. 3 is a schematic view of a first reflective structure of a first embodiment of the present application;
fig. 4 is a schematic view of a display panel of a second embodiment of the present application;
fig. 5 is a schematic view of a display panel of a third embodiment of the present application;
FIG. 6 is a schematic view of a display panel according to a fourth embodiment of the present application;
fig. 7 is a schematic view of a second substrate of a fifth embodiment of the present application;
fig. 8 is a schematic view of a display device according to an embodiment of the present application.
10, a display panel, 11, a first substrate, 12, a second substrate, 13, a first reflection structure, 131, a reflection protrusion, 14, a second reflection structure, 15, a bragg reflector, 151, a first functional layer, 152, a second functional layer, 153, a first type bragg reflector, 154, a second type bragg reflector, 155, a third type bragg reflector, 16, a color resistor, 161, a first color resistor, 162, a second color resistor, 171, a red color resistor, 172, a green color resistor, 173, a blue color resistor, 18, a pixel, 19, a polarizer, 20, a phosphor layer, 100, a display device, 21, a backlight module, 22, and a third reflection structure.
Detailed Description
It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, species, and/or combinations thereof may be present or added.
Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
The present application is described in detail below with reference to the figures and alternative embodiments.
Fig. 1 is a schematic view of a display panel according to a first embodiment of the present application, and fig. 2 is a schematic view of a bragg mirror according to the first embodiment of the present application, as shown in fig. 1 and fig. 2, the present application provides a display panel 10 including: a first substrate 11 and a second substrate 12, a first reflective structure 13 and a second reflective structure 14, a pixel 18, a bragg mirror 15, and a color resist 16. The first substrate 11 is disposed on a light emitting surface side of the display panel 10, and the second substrate 12 is disposed opposite to the first substrate 11; the first reflection structure 13 is arranged on one side of the first substrate 11 close to the second substrate 12, the plurality of pixels 18 are arranged on one side of the second substrate 12 close to the first substrate 11, the first reflection structure 13 is arranged between two adjacent pixels 18, each pixel 18 comprises a second reflection structure 14 arranged on the second substrate 12, a Bragg reflector 15 arranged on the second reflection structure 14, and a color resistor 16 arranged between the first reflection structure 13 and the Bragg reflector 15, the Bragg reflector 15 is of at least two types, the Bragg reflectors 15 of different types are used for reflecting light in different wavelength bands, the color resistor 16 is of at least two different colors, the color resistor 16 is arranged corresponding to the Bragg reflector 15, and the color of the color resistor 16 correspondingly arranged corresponds to the wavelength band of the light reflected by the Bragg reflector 15. The color resistor 16 is disposed between the first reflective structure 13 and the bragg reflector 15, and in the figure, the color resistor 16 is disposed on the first reflective structure 13 and the bragg reflector 15, but not represented, and the color resistor 16 must be disposed at two positions.
For the scheme that the color purity of the LCD panel is insufficient in the prior art, the first reflection structure 13 is arranged on the first substrate 11, the second reflection structure 14 and the bragg reflector 15 are arranged on the second substrate 12, and the color resistor 16 is arranged between the first reflection structure 13 and the bragg reflector 15, so that the light emitted by the backlight module 21 is reflected and sequentially passes through the color resistor 16 and the bragg reflector 15 when being irradiated on the first reflection structure 13, and is reflected by the second reflection structure 14, then passes through the bragg reflector 15 and is emitted from one side of the first substrate 11, which is far away from the second substrate 12, so as to display a picture; wherein, because the color resistance 16 and the bragg reflector 15 both have the effect of improving the color purity, therefore, after the purification of the color resistance 16 and the bragg reflector 15, the purity of the light of various colors is obviously improved, and then the color purity of the display picture of the display panel 10 is improved, and the display effect of the display panel 10 is enhanced.
In the way of the color resistor 16 to improve the color purity, taking the red color resistor 171 as an example, the light of other colors cannot pass through the red color resistor 171, so the purity of the red light passing through the red color resistor 171 is improved; the bragg reflector 15 reflects light of a specific wavelength band through structure selection, taking the case that the bragg reflector 15 reflects a red wavelength band as an example, light reflected to the position of the bragg reflector 15 through the red color resistor 171 is transmitted, only the light of the red wavelength band is reflected to one side of the first substrate 11 far away from the second substrate 12 for picture display, and light of other wavelength bands still existing after transmitting the red color resistor 171 is filtered out, so as to improve color purity, wherein the filtered light includes but is not limited to light directly reflected by the surface of the red color resistor 171 without being filtered by the red color resistor 171, and light of other wavelength bands reflected by the first reflecting structure 13 at other positions on the first substrate 11.
As shown in fig. 2, each type of bragg reflector 15 includes at least two pairs of functional layers, that is, at least four functional layers, which are stacked, and are sequentially arranged from the substrate direction in the manner of a first functional layer 151, a second functional layer 152, a first functional layer 151, and a second functional layer 152, where the second functional layer is a low refractive index functional layer when the first functional layer is a high refractive index functional layer, and the second functional layer is a high refractive index functional layer when the first functional layer is a low refractive index functional layer. Specifically, the refractive index of the high refractive index material is greater than or equal to 2.5, and the refractive index of the low refractive index material is about 1.5, and the high refractive index material may be SiO2 and TiO2 or other materials meeting the requirement. These materials may be deposited by sputter deposition, physical vapor deposition, chemical vapor deposition, ion beam deposition, molecular beam epitaxy, or the like.
The thicknesses of the first functional layer and the second functional layer are the same in the pair of functional layers, and the thicknesses of the pair of functional layers are calculated by the following formula:
wherein, Δ f 0 Representing the bandwidth of the photonic band gap, f 0 Denotes a wavelength band corresponding to the central frequency band of the photonic band gap, n1 denotes a refractive index of the first functional layer, n2 denotes a refractive index of the second functional layer, and d denotes a thickness of the pair of functional layers.
In each pair of functional layers, the thickness of the first functional layer and the second functional layer is the same, and the larger the thickness is, the larger the reflection wavelength band of the pair of functional layers is. When different continuous light is required to be reflected, the wavelength band reflected by various Bragg reflectors can be adjusted by only changing the thickness of each functional layer in different Bragg reflectors without changing the materials used by each functional layer. In the bragg mirror, the larger the logarithm of the functional layer, the larger the reflectivity of the bragg mirror.
Alternatively, 2 to 6 pairs of functional layers (8 to 12 functional layers) may be included in each type of bragg mirror. Optionally, at least three types of bragg mirrors 15 are included in the present application, the first type of bragg mirror 153 is used for reflecting the visible light (red light) in the wavelength range of 625nm to 740nm, the second type of bragg mirror 154 is used for reflecting the visible light (green light) in the wavelength range of 495nm to 570nm, and the third type of bragg mirror 155 is used for reflecting the visible light (blue light) in the wavelength range of 410nm to 485 nm.
The three types of bragg reflectors reflect light of different wavelengths (red light, green light and blue light) and at least pass through one layer of color resistance corresponding to the color, and by means of the design, very accurate color display is achieved, and color purity and display color gamut are improved.
Fig. 3 is a schematic diagram of a first reflective structure according to a first embodiment of the present disclosure, as shown in fig. 3, the first substrate 11 is an array substrate, the second substrate 12 is a color filter substrate, the first reflective structure 13 includes a plurality of reflective protrusions 131 made of a metal material, and a size of the second reflective structure 14 is equal to a size of the bragg reflector 15; the bragg reflector 15 reflects light with a wavelength matching the wavelength of the light corresponding to the correspondingly arranged color resist 16. Optionally, the first substrate 11 is a color filter substrate, and the second substrate 12 is an array substrate. At least a part of the light reflected by the reflection protrusion 131 passes through the color resistor 16 and the bragg reflector 15 in sequence, is reflected by the second reflection structure 14, passes through the bragg reflector 15, and is emitted from one side of the first substrate 11 far away from the second substrate 12 to display a picture.
The first reflecting structure may be a specular reflecting structure or a diffuse reflecting structure, and the second reflecting structure is preferably a specular reflecting structure.
The reflective protrusions 131 include a plurality of reflective protrusions 131, the reflective protrusions 131 are uniformly distributed on the first substrate 11, the reflective protrusions 131 are correspondingly disposed between the two pixels 18, and the number of the reflective protrusions 131 correspondingly disposed between the two pixels 18 is one, multiple, or one and multiple types. The cross-sectional shape of the reflective protrusion 131 includes one of a triangle, a cone, an arc, a trapezoid, a polygon, and the like; preferably, the cross-sectional shape of the reflective protrusion 131 is a right-angled triangle, and the inclined plane of the right-angled triangle faces to one side of the second substrate 12 where the color resistance color of the two adjacent pixels 18 is the same as the color resistance color of the first reflective structure 13, so as to reflect the light passing through the color resistance 16 on the first substrate 11 to the color resistance 16 of the corresponding color on the second substrate 12, and since the color resistance on the second substrate 12 is just located on the straight line corresponding to the inclined plane, it is beneficial to reflect more light directly to the corresponding color resistance 16, and the utilization rate of light is improved.
Optionally, the materials of the first reflective structure 13 and the second reflective structure 14 each include silver (Ag), a stack of silver (Ag) and magnesium (Mg), and a stack of silver (Ag) and aluminum (Al); wherein the first reflective structure 13 and the second reflective structure 14 are single-layer metal silver (Ag), and the thickness of the single-layer metal silver (Ag) is greater than 500nm; the first reflective structure 13 and the second reflective structure 14 are a laminate of silver (Ag) and magnesium (Mg), the thickness of the magnesium (Mg) layer is greater than 100nm, and the thickness of the silver (Ag) layer is greater than 500nm; or the first reflective structure 13 and the second reflective structure 14 are a stack of silver (Ag) and aluminum (Al), the thickness of the aluminum (Al) layer is greater than 100nm, and the thickness of the silver (Ag) layer is greater than 500nm.
Fig. 4 is a schematic diagram of a display panel according to a second embodiment of the present application, and as shown in fig. 4, this embodiment is a further improvement based on the first embodiment, and the color resistor 16 includes a red color resistor 171, a red color resistor 172, and a blue color resistor 173, and the red color resistor 171, the red color resistor 172, and the blue color resistor 173 are respectively disposed on the second reflective structure 14. Of course, the color resists may be provided with not only three colors but also a white color resist or a yellow color resist.
Light directly reflects to the color resistor 16 of the second substrate 12 through the first reflection structure 13, and different bragg reflectors reflect 15 light with specific wavelength, wherein the first type bragg reflector 153 is used for reflecting red light, the second type bragg reflector 154 is used for reflecting green light, the third type bragg reflector 155 is used for reflecting blue light, and the light passing through the color resistor 16 and the bragg reflector 15 is reflected again by the second reflection structure 14.
Fig. 5 is a schematic diagram of a display panel according to a third embodiment of the present application, and as shown in fig. 5, the main differences between the present embodiment and the second embodiment are: the color resistor 16 includes a red color resistor 171, a red color resistor 172 and a blue color resistor 173, and the red color resistor 171, the red color resistor 172 and the blue color resistor 173 are respectively disposed on the first reflective structure 13.
The light passes through the first reflection structure 13, is filtered by the red color resistor 171, the red color resistor 172 and the blue color resistor 173 and then is directly reflected to the bragg reflector 15 of the second substrate 12, and the light with specific wavelength is reflected by the different bragg reflectors 15, wherein the first type bragg reflector 153 is used for reflecting red light, the second type bragg reflector 154 is used for reflecting green light, the third type bragg reflector 155 is used for reflecting blue light, and the light passing through the color resistor 16 on the first substrate 11 and the bragg reflector 15 on the second substrate 12 is reflected again by the second reflection structure 14.
Fig. 6 is a schematic diagram of a display panel according to a fourth embodiment of the present application, and as shown in fig. 6, the main differences between the present embodiment and the second embodiment are: the color resistor 16 includes a first color resistor 161 and a second color resistor 162, the first color resistor 161 is disposed above the first reflective structure 13, the second color resistor 162 is disposed on the second reflective structure 14, and each of the first color resistor 161 and the second color resistor 162 includes a red color resistor 171, a red color resistor 172, and a blue color resistor 173. The color of the color resistor 16 of the first color resistor 161 is the same as the color of the color resistor 16 of one of the second color resistors 162 of the two adjacent pixels 18, and each color resistor 16 of the first color resistor 161 has the color resistor 16 of the second color resistor 161 of the corresponding color.
The light passes through the first reflective structure 13 and is filtered by the first color resistor 161 and then directly reflected to the second color resistor 162 of the second substrate 12, and different bragg reflectors 15 reflect light with specific wavelength, wherein the first type bragg reflector 153 is used for reflecting red light, the second type bragg reflector 154 is used for reflecting green light, the third type bragg reflector 155 is used for reflecting blue light, and the light passing through the second color resistor 162 and the bragg reflector 15 is reflected again by the second reflective structure 14, so that the light with specific wavelength is filtered by two layers of color resistors, and under the condition that the thickness of the display panel is not increased, the filtering path of the light is increased, and the color purity and the display color gamut are improved; and the trouble that the process needs to be improved, the photomask is replaced and the exposure data needs to be changed when the single-layer color resistance layer is directly added is avoided, and meanwhile, the yield of the color resistance is favorably improved.
Fig. 7 is a schematic diagram of a second substrate according to a fifth embodiment of the present disclosure, and as shown in fig. 7, the display panel 10 further includes a polarizer 19 and a phosphor layer 20, the polarizer 19 is disposed on a side of the second substrate 12 away from the first substrate 11, wherein the polarizer corresponding to the pixel 18 is hollowed out, the polarizer 19 is patterned, the patterned polarizer 19 has a polarization effect on light, and the polarizer 19 under the second reflective metal 14 is hollowed out.
Optionally, a phosphor layer 20 is disposed between the second substrate 12 and the second reflective structure 14, and the size of the phosphor layer 20 is comparable to the size of the second reflective structure 14. The phosphor layer 20 may be a phosphor layer 20 provided with only one color phosphor or a plurality of colors of phosphors, and each pixel 18 is provided with the phosphor layer 20 correspondingly.
Alternatively, the phosphor layer 20 may also be a plurality of different types of phosphor layers 20, and one type of phosphor layer 20 is correspondingly disposed for each pixel; each phosphor layer 20 is provided with a phosphor of one color, and the different types of phosphor layers 20 are provided with different colors, but each type of phosphor layer 20 is required to be uniformly provided between the second substrate 12 and the second reflective structure 14, and each pixel 18 is provided with a corresponding phosphor layer 20.
Optionally, the phosphor layer 20 is disposed correspondingly to 10% to 30% of the total number of the pixels. A phosphor layer 20 of a different color is uniformly laid per pixel or part of pixels between the second reflective structure 14 and the second substrate 12, such as: yellow, orange, etc. can make the colour of the light that reflects behind second reflection structure 14 and phosphor layer 20 through the light richer, and the colour gamut is wider, is favorable to promoting the backlight and shows the colour gamut.
Fig. 8 is a schematic view of a display device according to an embodiment of the present application, and as shown in fig. 8, the present application further provides a display device 100 including any one of the display panels 10 and the backlight module 21; the backlight module is arranged on one side of the second substrate far away from the first substrate.
The backlight module 21 may include a light source, or a light source and a third reflective structure 22, where the third reflective structure 22 is disposed on a side of the light source away from the display panel or beside the light source. Optionally, the backlight emits white light. The third reflecting structure is beneficial to improving the utilization rate of light; on the other hand, when the second substrate is provided with the phosphor layer 20, such as: yellow, orange etc. reflect out the light that the colour is abundanter through second reflection configuration 12, reflect backlight unit 21 light and reflect to first base plate 11 once more through third reflection configuration 22, such design, the colour of light is abundanter, and the colour gamut is wider, and the utilization ratio is higher, and the setting up of third reflection configuration is favorable to promoting the display colour gamut promptly.
Taking the display device including the display panel of the third embodiment as an example, the display device 100 of the present application sets the first reflection structure 13 on the first substrate 11, sets the second reflection structure 14 and the bragg reflector 15 on the second substrate 12, and sets the color resistor 16 between the first reflection structure 13 and the bragg reflector 15, so that when the light emitted from the backlight module 21 irradiates on the first reflection structure 13, the light is reflected and passes through the color resistor 16 and the bragg reflector 15 in sequence, and after being reflected by the second reflection structure 14, the light passes through the bragg reflector 15 and is emitted from one side of the first substrate 11 far away from the second substrate 12 to display a picture; wherein, because the color resistance 16 and the bragg reflector 15 both have the effect of improving the color purity, therefore, after the purification of the color resistance 16 and the bragg reflector 15, the purity of the light of various colors is obviously improved, and then the color purity of the display picture of the display panel 10 is improved, and the display effect of the display panel 10 is enhanced.
It should be noted that the inventive concept of the present application can form many embodiments, but the present application has a limited space and cannot be listed one by one, so that new embodiments can be formed between the above-described embodiments or between the above-described technical features in any type of combination, and after the embodiments or the technical features are combined, the original technical effects can be enhanced
The technical solution of the present application can be widely applied to various display panels, such as TN (Twisted Nematic) display panel, IPS (In-Plane Switching) display panel, VA (Vertical Alignment) display panel, MVA (Multi-Domain Vertical Alignment) display panel, and of course, other types of display panels may be used, and the above solution can be applied.
The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.
Claims (10)
1. A display panel, comprising:
the first substrate is arranged on one side of the light emitting surface of the display panel;
a second substrate disposed opposite to the first substrate;
the first reflecting structure is arranged on one side of the first substrate close to the second substrate;
the plurality of pixels are arranged on one side, close to the first substrate, of the second substrate, and the first reflecting structure is arranged between every two adjacent pixels; the pixel comprises a second reflecting structure arranged on the second substrate and a Bragg reflector arranged on the second reflecting structure; and
a color resistor disposed between the first reflective structure and the Bragg reflector;
the Bragg reflectors are at least two types, and the at least two types of Bragg reflectors respectively reflect light rays with different wave bands; the color of the color resistor is at least two, the color resistor is arranged corresponding to the Bragg reflector, and the color of the color resistor correspondingly arranged corresponds to the wave band of the light reflected by the Bragg reflector.
2. The display panel according to claim 1, wherein the first substrate is an array substrate, the second substrate is a color film substrate, the first reflective structure includes a plurality of reflective protrusions made of a metal material, and a size of the second reflective structure is equivalent to a size of the bragg reflector;
at least one part of the light reflected by the reflecting bulge sequentially passes through the color resistor and the Bragg reflector, is reflected by the second reflecting structure, then passes through the Bragg reflector and is emitted from one side of the first substrate far away from the second substrate to display a picture.
3. The display panel of claim 2, wherein the color resistors comprise a red color resistor, a green color resistor, and a blue color resistor, and the red color resistor, the green color resistor, and the blue color resistor are respectively disposed on the second reflective structure.
4. The display panel of claim 2, wherein the color resistors comprise a first color resistor and a second color resistor, the first color resistor being disposed above the first reflective structure, the second color resistor being disposed on the second reflective structure, the first color resistor and the second color resistor each comprising a red color resistor, a green color resistor, and a blue color resistor.
5. The display panel according to claim 4, wherein the first color resistor has a color identical to that of one of two adjacent second color resistors, and each of the first color resistors corresponds to the second color resistor having the same color.
6. The display panel of claim 2, wherein the color resistors comprise a red color resistor, a green color resistor, and a blue color resistor, and the red color resistor, the green color resistor, and the blue color resistor are respectively disposed on the first reflective structure.
7. The display panel according to claim 2, wherein the display panel further comprises a polarizer and a phosphor layer, the polarizer is disposed on a side of the second substrate away from the first substrate, and a position of the polarizer corresponding to the pixel is hollowed;
and fluorescent powder is arranged in the fluorescent powder layer, the fluorescent powder layer is arranged between the second substrate and the second reflection structure, and the size of the fluorescent powder layer is equivalent to that of the second reflection structure.
8. The display panel according to claim 7, wherein 10% to 30% of the total number of the pixels are provided with the phosphor layer.
9. The display panel according to claim 2, wherein the first reflective structure and the second reflective structure are made of silver, a stack of silver and magnesium, and a stack of silver and aluminum;
wherein, when the first and second reflective structures are a single layer of metallic silver, the single layer of metallic silver has a thickness greater than 500nm;
the first reflection structure and the second reflection structure are laminated bodies of silver and magnesium, wherein the thickness of the magnesium layer is more than 100nm, and the thickness of the silver layer is more than 500nm; or the first reflection structure and the second reflection structure are a laminated body of silver and aluminum, wherein the thickness of the aluminum layer is more than 100nm, and the thickness of the silver layer is more than 500nm.
10. A display device comprising a backlight module, and further comprising the display panel according to any one of claims 1 to 9;
the backlight module is arranged on one side close to the light incident surface of the display panel.
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