CN114815376B - Reflective color display panel, display device and manufacturing method - Google Patents
Reflective color display panel, display device and manufacturing method Download PDFInfo
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- CN114815376B CN114815376B CN202210590949.6A CN202210590949A CN114815376B CN 114815376 B CN114815376 B CN 114815376B CN 202210590949 A CN202210590949 A CN 202210590949A CN 114815376 B CN114815376 B CN 114815376B
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Classifications
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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
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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
- G02F1/133504—Diffusing, scattering, diffracting 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
Abstract
The invention discloses a reflective color display panel, a display device and a manufacturing method, wherein the reflective color display panel comprises a display box for controlling gray scale brightness and a reflective box which is laminated below the display box; the display box comprises a counter substrate, an array substrate and a liquid crystal layer positioned between the counter substrate and the array substrate, wherein a plurality of transparent pixel areas distributed in an array are arranged on the counter substrate; the reflection box comprises a color film substrate, a reflection film and a diffusion layer positioned between the color film substrate and the reflection film, wherein the reflection film is arranged on one side of the color film substrate far away from the display box, and the color film substrate is provided with a color resistance layer corresponding to the transparent pixel area. The reflective film is arranged on the outer side of the display box, so that the conventional reflective film and the display box can be directly attached, the manufacturing process of the display panel is simplified, and the manufacturing cost is reduced; and locate the color film base plate in the underside of the display box, avoid the light after filtering to direct to the human eye, match the diffusion layer again, thus can play better eye-protecting function.
Description
Technical Field
The invention relates to the technical field of displays, in particular to a reflective color display panel, a display device and a manufacturing method.
Background
The liquid crystal display has the advantages of light weight, durability, energy conservation, environmental protection, low power consumption and the like, but a backlight source is needed to be matched below the liquid crystal display panel, so that the module is thick and the cost is high. The electronic paper display is a display meeting the needs of the public, and can display images by using an external light source, unlike a liquid crystal display which needs to be added with a backlight source, so that information on the electronic paper can still be clearly seen in an environment with strong outdoor sunlight without a problem of visual angle, and the electronic paper display is widely applied to electronic readers (such as electronic books and electronic newspapers) or other electronic components (such as price tags) due to the advantages of power saving, high reflectivity, contrast ratio and the like.
The electronic paper display displays images by reflecting external light sources, and the existing electronic paper display has the following problems:
1. the polarizer is required to be matched for use, the loss of the polarizer to light is more, when an external light source is weaker, the brightness of the electronic paper display is lower, and the display is thicker and has high cost;
2. in some electronic paper displays, the reflecting layers are arranged in the box, so that the manufacturing process is complex and the cost is high;
3. in order to realize diffuse reflection, the existing electronic paper displays are provided with microstructure protrusions on the reflecting layer, so that diffuse reflection is realized, the microstructure protrusions are complex in process and high in cost;
4. in some electronic paper displays, the color film substrate is close to one side of the external environment, and reflected light is directly injected into eyes of a user after color blocking and filtering, so that the eyes are easily damaged.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a reflective color display panel, a display device and a manufacturing method, so as to solve the problems that the manufacturing process of the reflective display panel in the prior art is complex, the cost is high and eyes are easy to damage.
The aim of the invention is achieved by the following technical scheme:
the invention provides a reflective color display panel, which comprises a display box for controlling gray scale brightness and a reflective box laminated below the display box;
the display box comprises a counter substrate, an array substrate arranged opposite to the counter substrate and a liquid crystal layer arranged between the counter substrate and the array substrate, wherein a plurality of transparent pixel areas distributed in an array are arranged on the counter substrate;
the reflection box comprises a color film substrate, a reflection film and a diffusion layer positioned between the color film substrate and the reflection film, wherein the reflection film is arranged on one side of the color film substrate away from the display box, and a color resistance layer corresponding to the transparent pixel area is arranged on the color film substrate.
Further, the diffusion layer comprises first adhesive glue and reflective particles mixed in the first adhesive glue, and the reflective film is adhered to the color film substrate through the first adhesive glue.
Further, the diffusion layer is polymer dispersed liquid crystal, the reflection film is provided with a reflection metal layer, a transparent electrode is arranged on one side of the color film substrate, which faces the reflection film, and the polymer dispersed liquid crystal can be switched between a fog state and a transparent state.
Further, the array substrate is provided with a pixel electrode on a side facing the liquid crystal layer, and the opposite substrate is provided with a common electrode matched with the pixel electrode on a side facing the liquid crystal layer.
Further, the liquid crystal layer comprises liquid crystal molecules and dye liquid crystal molecules which are mixed with each other, the liquid crystal molecules are positive liquid crystal molecules, the positive liquid crystal molecules and the dye liquid crystal molecules are aligned parallel to the opposite substrate and the array substrate, the alignment direction of the liquid crystal layer close to one side of the opposite substrate is antiparallel to the alignment direction of the liquid crystal layer close to one side of the array substrate, and the positive liquid crystal molecules and the dye liquid crystal molecules in the liquid crystal layer are in a twisted state.
Further, the opposite substrate is provided with a black matrix that spaces the plurality of transparent pixel regions from each other.
Further, the opposite substrate is provided with a first flat layer covering the black matrix.
Further, the color resistance layer is arranged on one side of the color film substrate, which faces the diffusion layer.
Further, a second flat layer covering the color resistance layer is arranged on the color film substrate.
The present application also provides a display device comprising a reflective color display panel as described above.
The present application also provides a method for manufacturing a reflective color display panel, the method for manufacturing the reflective color display panel described above, the method comprising:
providing a display box, wherein the display box comprises a counter substrate, an array substrate arranged opposite to the counter substrate and a liquid crystal layer positioned between the counter substrate and the array substrate, and a plurality of transparent pixel areas distributed in an array are arranged on the counter substrate;
providing a reflection box, wherein the reflection box comprises a color film substrate, a diffusion layer and a reflection film, the diffusion layer is arranged on one side of the color film substrate, the reflection film is arranged on one side of the diffusion layer away from the color film substrate, and a color resistance layer corresponding to the transparent pixel area is arranged on the color film substrate;
the reflective box is adhered below the display box.
The invention has the beneficial effects that: the reflective film is arranged on the outer side of the display box, so that the conventional reflective film and the display box can be directly attached, the manufacturing process of the display panel is simplified, and the manufacturing cost is reduced; the diffusion layer is adopted, so that diffuse reflection can be realized without arranging microstructure protrusions, the manufacturing process of the display panel is further simplified, and the manufacturing cost is reduced; in addition, the color film substrate is arranged on the lower side of the display box, so that the light after being filtered is prevented from directly radiating to eyes of people, and the diffusion layer is matched for diffusion, so that a better eye protection function can be achieved.
Drawings
FIG. 1 is a schematic diagram of a reflective color display panel in an initial state according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a reflective color display panel according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a reflective color display panel in an initial state according to a second embodiment of the present invention;
FIG. 4 is a schematic diagram of a reflective color display panel in a diffuse reflection display according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a reflective color display panel in the third embodiment of the invention in specular reflection display.
Detailed Description
In order to further describe the technical means and effects adopted by the invention to achieve the preset aim, the following detailed description is given of the specific implementation, structure, characteristics and effects of the reflective color display panel and display device, manufacturing method according to the invention by combining the accompanying drawings and the preferred embodiment, wherein:
example one
Fig. 1 is a schematic diagram of a reflective color display panel in an initial state according to an embodiment of the invention. Fig. 2 is a schematic diagram of a reflective color display panel according to an embodiment of the invention during reflective display.
As shown in fig. 1 to 2, a reflective color display panel according to a first embodiment of the present invention includes a display case 10 and a reflective case 20 stacked under the display case 10. The display box 10 is used for controlling gray scale brightness, the reflection box 20 is used for reflecting ambient light, and the reflection box 20 is stacked below the display box 10, so that display by using the reflected ambient light is realized.
The display case 10 includes a counter substrate 11, an array substrate 12 disposed opposite to the counter substrate 11, and a liquid crystal layer 13 disposed between the counter substrate 11 and the array substrate 12. The counter substrate 11 is provided with a plurality of transparent pixel areas W arranged in an array, that is, the display case 10 does not have a color filter layer.
The reflection case 20 includes a color film substrate 21, a reflection film 23, and a diffusion layer 22 between the color film substrate 21 and the reflection film 23, the diffusion layer 22 having a diffusion effect on light. The reflective film 23 is disposed on a side of the color film substrate 21 away from the display box 10, and a color resist layer 211 corresponding to the transparent pixel area W is disposed on the color film substrate 21. The color resist layer 211 includes color resist materials of three colors of red (R), green (G), and blue (B), and corresponds to pixel units of three colors of red (R), green (G), and blue (B). The reflective film 23 is a reflective film of a finished product, so that it is not necessary to deposit reflective metal on the array substrate 12 when the array substrate 12 is manufactured, and difficulty of manufacturing process is reduced. The reflective film 23 may be a flexible reflective film or a thin rigid reflective film. The color film substrate 21 is disposed at the lower side of the display box 10, i.e. far away from the external environment, when the ambient light enters the display box, the light loss of the ambient light is reduced because the color filter layer is not disposed, after the ambient light enters the reflection box, the ambient light is reflected by the reflection film after passing through the color resistance layer, and the reflected light directly enters the color resistance layer, so that the utilization rate of the three-color light of red (R), green (G) and blue (B) is higher. Furthermore, the light passing through the color blocking layer passes through the display box, so that the light after being filtered is prevented from directly radiating to eyes of a person, and the light is matched with the diffusion effect of the diffusion layer 222, so that a better eye protection effect can be achieved.
In this embodiment, the diffusion layer 22 includes a first adhesive and reflective particles mixed in the first adhesive, and the reflective film 23 is adhered to the color film substrate 21 by the first adhesive. The first adhesive may be OCA adhesive, and the reflection film 23 and the color film substrate 21, which have been manufactured, are adhered together by the OCA adhesive, thereby forming the reflection case 20. Before bonding, the reflective particles need to be added into the OCA glue, so that the reflective effect of the reflective box 20 is increased, and the reflective particles reflect light rays in different directions to form a diffuse reflection state, so that the reflective light loss is reduced, and meanwhile, a certain eye protection effect can be achieved.
In the present embodiment, the counter substrate 11 is provided with a black matrix 111 that separates the plurality of transparent pixel regions W from each other, the counter substrate 11 is provided with a first flat layer 112 that covers the black matrix 111, and the common electrode 113 covers the first flat layer 112 on the side facing the liquid crystal layer 13. Of course, in other embodiments, the black matrix 111 may be disposed on the color film substrate 21 and separate the color resists 211 from each other, so that a flat layer may be reduced to reduce the thickness of the display panel.
In this embodiment, the color resist layer 211 is disposed on a side of the color film substrate 21 facing the diffusion layer 22, and a second planarization layer 212 covering the color resist layer 211 is disposed on the color film substrate 21.
In this embodiment, the array substrate 12 and the color film substrate 21 are respectively made of two different transparent substrates, so a second adhesive 30 is further required to be disposed between the display box 10 and the reflection box 20, and the second adhesive 30 may be OCA adhesive, and the display box 10 and the reflection box 20 are adhered together by the OCA adhesive. Of course, in other embodiments, the array substrate 12 and the color film substrate 21 may share a transparent substrate, i.e. the pixel driving circuit and the pixel electrode 121 are fabricated on one side of the transparent substrate, and the color resist layer 211 is fabricated on the other side of the transparent substrate, so that the thickness of the display panel may be reduced, but the fabrication process is relatively complex.
In the present embodiment, the array substrate 12 is provided with a pixel electrode 121 on a side facing the liquid crystal layer 13, and the counter substrate 11 is provided with a common electrode 113 that is mated with the pixel electrode 121 on a side facing the liquid crystal layer 13. The common electrode 113 is a planar electrode covering the entire surface of the counter substrate 11, and the pixel electrode 121 is a block electrode corresponding to the transparent pixel region W.
Further, the liquid crystal layer 13 includes liquid crystal molecules 131 and dye liquid crystal molecules 132 mixed with each other, the liquid crystal molecules 131 are positive liquid crystal molecules (liquid crystal molecules having positive dielectric anisotropy), as shown in fig. 1, in an initial state, the positive liquid crystal molecules and dye liquid crystal molecules 132 are aligned parallel to the counter substrate 11 and the array substrate 12, an alignment direction of a side of the liquid crystal layer 13 near the counter substrate 11 is antiparallel to an alignment direction of a side near the array substrate 12, and the positive liquid crystal molecules and dye liquid crystal molecules 132 in the liquid crystal layer 13 are in a twisted state, that is, the positive liquid crystal molecules and dye liquid crystal molecules 132 in the liquid crystal layer 13 are twisted by 180 ° from bottom to top to form an STN (super twisted) display mode. Of course, in other embodiments, the liquid crystal molecules 131 may be negative liquid crystal molecules (liquid crystal molecules with negative dielectric anisotropy), and only in the initial alignment, the negative liquid crystal molecules and the dye liquid crystal molecules 132 are aligned perpendicular to the counter substrate 11 and the array substrate 12, and the display panel is in the normally white mode.
The dye liquid crystal molecules 132 are positive dye liquid crystal molecules, the light absorption capacity of the long axis of the positive dye liquid crystal molecules is larger than that of the short axis, and the positive dye liquid crystal molecules have the characteristics of strong light absorption capacity of the long axis and weak light absorption capacity of the short axis. In the initial state, the dye liquid crystal molecules 132 have strong light absorption ability and are twisted by 180 ° from bottom to top, so that the display panel is in a black state in the initial state. The dye liquid crystal molecules 132 may be black dye liquid crystal molecules or purplish black dye liquid crystal molecules, and the dye liquid crystal molecules 132 may be made by dyeing common liquid crystal molecules, but cannot deflect in an electric field, and the liquid crystal molecules 131 are required to rotate in the electric field with the dye liquid crystal molecules 132. By mixing the dye liquid crystal molecules 132 in the liquid crystal layer 13 and twisting the liquid crystal molecules 180 ° from bottom to top, the reflective color display panel in this embodiment does not need to provide upper and lower polarizers and a composite optical retardation film, thereby reducing the thickness of the display panel and the manufacturing process.
The array substrate 12 is defined by a plurality of scanning lines and a plurality of data lines on a side facing the liquid crystal layer 13 in an insulating and crossing manner to form a plurality of pixel units, a pixel electrode 121 and a thin film transistor are arranged in each pixel unit, the pixel electrode 121 is connected with the corresponding scanning lines and data lines through the thin film transistor, and a common electrode 113 matched with the pixel electrode 121 is arranged on the opposite substrate 11. When a gray voltage is applied to the pixel electrode 121 and a common voltage is applied to the common electrode 113, the dye liquid crystal molecules 132 deflect in a direction perpendicular to the array substrate 12 along with the liquid crystal molecules 131 in a vertical electric field, so that the light absorption capability of the dye liquid crystal molecules 132 becomes weak, and ambient light passes through the dye liquid crystal molecules 132 and is reflected by the reflective film 23 and then is emitted from the opposite substrate 11, thereby the display panel is in a bright state, as shown in fig. 2. The thin film transistor includes a gate electrode, an active layer, a drain electrode and a source electrode, wherein the gate electrode is located on the same layer as the scan line and is electrically connected with the scan line, the gate electrode is isolated from the active layer by a gate insulating layer, the source electrode is electrically connected with the data line, and the drain electrode is electrically connected with the pixel electrode 121.
The counter substrate 11, the array substrate 12, and the color film substrate 21 may be made of glass, acrylic, polycarbonate, or the like. The material of the common electrode 113 and the pixel electrode 121 may be Indium Tin Oxide (ITO), indium Zinc Oxide (IZO), or the like.
Example two
Fig. 3 is a schematic diagram of a reflective color display panel in an initial state according to a second embodiment of the present invention. Fig. 4 is a schematic structural diagram of a reflective color display panel in the second embodiment of the present invention during diffuse reflection display. Fig. 5 is a schematic structural diagram of a reflective color display panel in the third embodiment of the invention in specular reflection display. As shown in fig. 3-5, the reflective color display panel provided in the second embodiment of the present invention is substantially the same as the reflective color display panel in the first embodiment (fig. 1-2), except that in the present embodiment, the diffusion layer 22 is a polymer dispersed liquid crystal, the reflective film 23 has a reflective metal layer 231 thereon, the color film substrate 21 is provided with a transparent electrode 213 on a side facing the reflective film 23, and the polymer dispersed liquid crystal can be switched between a fog state and a transparent state. The reflective metal layer 231 may be made of a material having a high light reflecting ability, such as aluminum (Al) or silver (Ag).
As shown in fig. 4, when the eye-protecting function is required or the external environment is brighter, no voltage is applied to the reflective metal layer 231 and the transparent electrode 213, and the polymer dispersed liquid crystal between the reflective metal layer 231 and the transparent electrode 213 is in a fog state, so that it has a light scattering effect, and the reflective box 20 is in a diffuse reflection state. As shown in fig. 5, when an eye-protecting function is not required or external light is weak, a voltage is applied to the reflective metal layer 231 and the transparent electrode 213, a strong vertical electric field (E2 in fig. 5) is formed between the reflective metal layer 231 and the transparent electrode 213, and the polymer dispersed liquid crystal between the reflective metal layer 231 and the transparent electrode 213 is in a transparent state, so that the reflective box 20 is in a specular reflection state, and the brightness of the display panel is enhanced.
In this embodiment, the diffusion layer 22 is made of polymer dispersed liquid crystal, and the switching between the fog state and the transparent state is performed by controlling the polymer dispersed liquid crystal, so that the reflection box 20 can be switched between the diffuse reflection state and the specular reflection state, which is more convenient for users to use.
Those skilled in the art will understand that the other structures and working principles of the present embodiment are the same as those of the first embodiment, and will not be described herein.
The present application also provides a display device comprising a reflective color display panel as described above.
The present application also provides a method for manufacturing a reflective color display panel, which is used for manufacturing the reflective color display panel, and the manufacturing method includes:
a display box 10 is provided, wherein the display box 10 comprises a counter substrate 11, an array substrate 12 arranged opposite to the counter substrate 11, and a liquid crystal layer 13 arranged between the counter substrate 11 and the array substrate 12, and a plurality of transparent pixel areas W distributed in an array are arranged on the counter substrate 11. The display case 10 in this embodiment does not need to be provided with a color filter layer.
The liquid crystal layer 13 includes liquid crystal molecules 131 and dye liquid crystal molecules 132 mixed with each other, the liquid crystal molecules 131 are positive liquid crystal molecules (liquid crystal molecules with positive dielectric anisotropy), as shown in fig. 1, in an initial state, the positive liquid crystal molecules and dye liquid crystal molecules 132 are aligned parallel to the counter substrate 11 and the array substrate 12, an alignment direction of a side of the liquid crystal layer 13 near the counter substrate 11 is antiparallel to an alignment direction of a side near the array substrate 12, and the positive liquid crystal molecules and dye liquid crystal molecules 132 in the liquid crystal layer 13 are in a twisted state. It is understood that the opposite substrate 11 and the array substrate 12 are provided with an alignment layer on a side facing the liquid crystal layer 13, thereby aligning the liquid crystal layer 13. The array substrate 12 is provided with a pixel electrode 121, a plurality of scanning lines, a plurality of data lines, and a thin film transistor, and the counter substrate 11 is provided with a common electrode 113 that is matched with the pixel electrode 121.
The reflection box 20 is further provided, the reflection box 20 includes a color film substrate 21, a diffusion layer 22 and a reflection film 23, the diffusion layer 22 is disposed on one side of the color film substrate 21, the reflection film 23 is disposed on one side of the diffusion layer 22 away from the color film substrate 21, and a color resist layer 211 corresponding to the transparent pixel area W is disposed on the color film substrate 21. The reflective film 23 is formed by plating a reflective metal layer 231 on a flexible film or a thinner hard film, for example, a material with strong light reflecting capability such as aluminum (Al) or silver (Ag), and the reflective film 23 is directly a conventional ready-made product, without manufacturing the reflective film 23 when manufacturing the display panel.
In one embodiment, the diffusion layer 22 includes a first adhesive and reflective particles mixed in the first adhesive, and the reflective film 23 is adhered to the color film substrate 21 by the first adhesive.
In another embodiment, the diffusion layer 22 is a polymer dispersed liquid crystal, and the reflective film 23 and the color film substrate 21 are adhered together at the periphery by a frame sealing adhesive.
Finally, the manufactured display case 10 and the reflection case 20 are bonded together by the second bonding adhesive 30, specifically, the reflection case 20 is bonded to the lower side of the display case 10, i.e., the side away from the external environment.
In this document, terms such as up, down, left, right, front, rear, etc. are defined by the positions of the structures in the drawings and the positions of the structures with respect to each other, for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the protection sought herein. It should also be understood that the terms "first" and "second," etc., as used herein, are used merely for distinguishing between names and not for limiting the number and order.
The present invention is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (8)
1. A reflective color display panel, comprising a display box (10) for controlling gray scale brightness and a reflective box (20) laminated under the display box (10);
the display box (10) comprises a counter substrate (11), an array substrate (12) arranged opposite to the counter substrate (11) and a liquid crystal layer (13) positioned between the counter substrate (11) and the array substrate (12), wherein a plurality of transparent pixel areas (W) distributed in an array are arranged on the counter substrate (11);
the reflection box (20) comprises a color film substrate (21), a reflection film (23) and a diffusion layer (22) positioned between the color film substrate (21) and the reflection film (23), wherein the reflection film (23) is arranged on one side, far away from the display box (10), of the color film substrate (21), and a color resistance layer (211) corresponding to the transparent pixel area (W) is arranged on the color film substrate (21);
the diffusion layer (22) comprises first adhesive glue and reflective particles mixed in the first adhesive glue, and the reflective film (23) is adhered to the color film substrate (21) through the first adhesive glue.
2. The reflective color display panel according to claim 1, wherein the array substrate (12) is provided with a pixel electrode (121) on a side facing the liquid crystal layer (13), and the counter substrate (11) is provided with a common electrode (113) cooperating with the pixel electrode (121) on a side facing the liquid crystal layer (13).
3. The reflective color display panel according to claim 2, wherein the liquid crystal layer (13) includes liquid crystal molecules (131) and dye liquid crystal molecules (132) mixed with each other, the liquid crystal molecules (131) are positive liquid crystal molecules, the positive liquid crystal molecules and the dye liquid crystal molecules (132) are aligned parallel to the counter substrate (11) and the array substrate (12), an alignment direction of the liquid crystal layer (13) near the counter substrate (11) is antiparallel to an alignment direction of the liquid crystal layer near the array substrate (12), and the positive liquid crystal molecules and the dye liquid crystal molecules (132) in the liquid crystal layer (13) are in a twisted state.
4. A reflective color display panel according to claim 1, characterized in that the counter substrate (11) is provided with a black matrix (111) spacing the plurality of transparent pixel areas (W) from each other; the counter substrate (11) is provided with a first flat layer (112) that covers the black matrix (111).
5. The reflective color display panel according to claim 1, wherein the color resist layer (211) is disposed on a side of the color film substrate (21) facing the diffusion layer (22).
6. The reflective color display panel according to claim 5, wherein a second planarization layer (212) covering the color resist layer (211) is provided on the color film substrate (21).
7. A display device comprising a reflective color display panel according to any one of claims 1-6.
8. A method for manufacturing a reflective color display panel, wherein the manufacturing method is used for manufacturing the reflective color display panel according to any one of claims 1 to 6, and the manufacturing method comprises:
providing a display box (10), wherein the display box (10) comprises a counter substrate (11), an array substrate (12) arranged opposite to the counter substrate (11) and a liquid crystal layer (13) positioned between the counter substrate (11) and the array substrate (12), and a plurality of transparent pixel areas (W) distributed in an array are arranged on the counter substrate (11);
providing a reflection box (20), wherein the reflection box (20) comprises a color film substrate (21), a diffusion layer (22) and a reflection film (23), the diffusion layer (22) is arranged on one side of the color film substrate (21), the reflection film (23) is arranged on one side, far away from the color film substrate (21), of the diffusion layer (22), and a color resistance layer (211) corresponding to the transparent pixel area (W) is arranged on the color film substrate (21);
the reflection box (20) is adhered below the display box (10).
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002318383A (en) * | 2001-04-20 | 2002-10-31 | Kyocera Corp | Reflective liquid crystal display device |
| US6738112B1 (en) * | 1998-09-25 | 2004-05-18 | Citizen Watch Co., Ltd. | Liquid crystal display with particular use of diffusing films |
| CN103185981A (en) * | 2013-03-15 | 2013-07-03 | 京东方科技集团股份有限公司 | Color filter array substrate, preparation method thereof and display device |
| CN104267520A (en) * | 2014-08-06 | 2015-01-07 | 合肥鑫晟光电科技有限公司 | Display device |
| CN105353560A (en) * | 2015-12-04 | 2016-02-24 | 武汉华星光电技术有限公司 | Reflecting liquid crystal display |
| CN208477259U (en) * | 2018-04-25 | 2019-02-05 | 京东方科技集团股份有限公司 | A kind of reflective display screen and display device |
| CN109507823A (en) * | 2017-09-14 | 2019-03-22 | 中华映管股份有限公司 | Reflective liquid-crystal display |
| CN112904633A (en) * | 2021-01-22 | 2021-06-04 | 昆山龙腾光电股份有限公司 | Display panel and display device |
-
2022
- 2022-05-27 CN CN202210590949.6A patent/CN114815376B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6738112B1 (en) * | 1998-09-25 | 2004-05-18 | Citizen Watch Co., Ltd. | Liquid crystal display with particular use of diffusing films |
| JP2002318383A (en) * | 2001-04-20 | 2002-10-31 | Kyocera Corp | Reflective liquid crystal display device |
| CN103185981A (en) * | 2013-03-15 | 2013-07-03 | 京东方科技集团股份有限公司 | Color filter array substrate, preparation method thereof and display device |
| CN104267520A (en) * | 2014-08-06 | 2015-01-07 | 合肥鑫晟光电科技有限公司 | Display device |
| CN105353560A (en) * | 2015-12-04 | 2016-02-24 | 武汉华星光电技术有限公司 | Reflecting liquid crystal display |
| CN109507823A (en) * | 2017-09-14 | 2019-03-22 | 中华映管股份有限公司 | Reflective liquid-crystal display |
| CN208477259U (en) * | 2018-04-25 | 2019-02-05 | 京东方科技集团股份有限公司 | A kind of reflective display screen and display device |
| CN112904633A (en) * | 2021-01-22 | 2021-06-04 | 昆山龙腾光电股份有限公司 | Display panel and display device |
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