CN114815376A - Reflection type color display panel, display device and manufacturing method - Google Patents
Reflection type color display panel, display device and manufacturing method Download PDFInfo
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- 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
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- 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
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- G02F1/1333—Constructional arrangements; Manufacturing methods
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- 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
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- 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
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- 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
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Abstract
The invention discloses a reflection-type color display panel, a display device and a manufacturing method, wherein the reflection-type color display panel comprises a display box for controlling gray scale brightness and a reflection box stacked below the display box; the display box comprises an opposite substrate, an array substrate and a liquid crystal layer positioned between the opposite substrate and the array substrate, wherein the opposite substrate is provided with a plurality of transparent pixel regions distributed in an array manner; the reflection box comprises a color film substrate, a reflection film and a diffusion layer located between the color film substrate and the reflection film, the reflection film is arranged on one side, away from the display box, of the color film substrate, and the color film substrate is provided with a color resistance layer corresponding to the transparent pixel area. The reflecting film is arranged on the outer side of the display box, so that the conventional reflecting film can be directly attached to the display box, the manufacturing process of the display panel is simplified, and the manufacturing cost is reduced; and locate the downside that shows the box with the various membrane base plate, avoid the direct directive people's eye of light after the filtration, match the diffusion layer again to can play better eye-protecting function.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a reflective color display panel, a display device, and a manufacturing method thereof.
Background
The liquid crystal display has the advantages of lightness, thinness, durability, low power consumption and the like which accord with energy conservation and environmental protection, but a backlight source is needed to be matched and used 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 public needs, 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 electronic paper can still be clearly seen in an outdoor environment with strong sunlight without the problem of viewing angle, and the electronic paper display is widely applied to electronic readers (such as electronic books and electronic newspapers) or other electronic elements (such as price labels) 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 needed to be matched, 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 all arranged in the box, so that the manufacturing process is complex and the cost is high;
3. in order to realize diffuse reflection, the conventional electronic paper display is provided with a microstructure protrusion on a reflecting layer, so that the diffuse reflection is realized, and the process of the microstructure protrusion is complex and the cost is high;
4. in some electronic paper displays, the color film substrate is close to one side of the external environment, and reflected light is directly emitted into eyes of a user after being filtered by the color resistor, so that the eyes are easily damaged.
Disclosure of Invention
In order to overcome the disadvantages and shortcomings of the prior art, the present invention provides a reflective color display panel, a display device, and a method for fabricating the same, so as to solve the problems of the prior art that the reflective color display panel has a complicated process, a high cost, and is prone to damage eyes.
The purpose of the invention is realized by the following technical scheme:
the invention provides a reflection-type color display panel, which comprises a display box for controlling gray scale brightness and a reflection box stacked below the display box;
the display box comprises an opposite substrate, an array substrate and a liquid crystal layer, wherein the array substrate is arranged opposite to the opposite substrate, the liquid crystal layer is positioned between the opposite substrate and the array substrate, and a plurality of transparent pixel regions distributed in an array mode are arranged on the opposite substrate;
the reflection box comprises a color film substrate, a reflection film and a diffusion layer located between the color film substrate and the reflection film, the reflection film is arranged on one side, away from the display box, of the color film substrate, and a color resistance layer corresponding to the transparent pixel area is arranged on the color film substrate.
Further, the diffusion layer comprises a first adhesive and reflective particles mixed in the first adhesive, and the reflective film is bonded with the color film substrate through the first adhesive.
Further, the diffusion layer is polymer dispersed liquid crystal, the reflection film is provided with a reflection metal layer, the color film substrate is provided with a transparent electrode on one side facing the reflection film, and the polymer dispersed liquid crystal can be switched between a fog state and a transparent state.
Furthermore, the array substrate is provided with a pixel electrode on one side facing the liquid crystal layer, and the opposite substrate is provided with a common electrode matched with the pixel electrode on one side facing the liquid crystal layer.
Further, the liquid crystal layer includes liquid crystal molecule and the dye liquid crystal molecule of intermixing, the liquid crystal molecule is positive liquid crystal molecule, positive liquid crystal molecule with the dye liquid crystal molecule is on a parallel with the opposition base plate with the array substrate is joined in marriage to the direction, the liquid crystal layer is close to join in marriage the direction of joining in marriage of opposition base plate one side with being close to join in marriage the direction antiparallel of joining in marriage of array substrate one side, positive liquid crystal molecule and dye liquid crystal molecule in the liquid crystal layer are the distortion state.
Further, the opposite substrate is provided with a black matrix that spaces the plurality of transparent pixel regions from each other.
Further, the counter substrate is provided with a first flat layer covering the black matrix.
Furthermore, the color filter layer is arranged on one side of the color filter substrate facing 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 of manufacturing a reflective color display panel, the method of manufacturing a reflective color display panel as described above, the method comprising:
providing a display box, wherein the display box comprises an opposite substrate, an array substrate arranged opposite to the opposite substrate and a liquid crystal layer positioned between the opposite substrate and the array substrate, and a plurality of transparent pixel areas distributed in an array manner are arranged on the opposite 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 region is arranged on the color film substrate;
and adhering the reflection box to the lower part of the display box.
The invention has the beneficial effects that: the reflecting film is arranged on the outer side of the display box, so that the conventional reflecting film can be directly attached to the display box, the manufacturing process of the display panel is simplified, and the manufacturing cost is reduced; moreover, the diffusion layer is adopted, so that diffuse reflection can be realized without arranging the 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 light rays after light filtering are prevented from directly irradiating human eyes, and the diffusion function of the diffusion layer is matched, so that a better eye protection function can be achieved.
Drawings
FIG. 1 is a schematic structural diagram of a reflective color display panel in an initial state according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a reflective color display panel according to an embodiment of the invention;
FIG. 3 is a schematic structural 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 according to a second embodiment of the present invention during a diffuse reflection display;
fig. 5 is a schematic structural diagram of a reflective color display panel in a reflective display according to a third embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given of specific embodiments, structures, features and effects of the reflective color display panel and the display device, and the manufacturing method thereof according to the present invention with reference to the accompanying drawings and preferred embodiments:
[ example one ]
Fig. 1 is a schematic structural diagram of a reflective color display panel in an initial state according to a first embodiment of the invention. Fig. 2 is a schematic structural diagram of a reflective color display panel in a reflective display according to an embodiment of the invention.
As shown in fig. 1 to 2, a reflective color display panel according to a first embodiment of the present invention includes a display box 10 and a reflective box 20 stacked below the display box 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 cell 10 includes a counter substrate 11, an array substrate 12 disposed opposite to the counter substrate 11, and a liquid crystal layer 13 located between the counter substrate 11 and the array substrate 12. The opposite substrate 11 is provided with a plurality of transparent pixel regions W distributed in an array, i.e. the display box 10 does not need to be provided with a color filter layer.
The reflection box 20 includes a color filter substrate 21, a reflection film 23, and a diffusion layer 22 located between the color filter substrate 21 and the reflection film 23, where the diffusion layer 22 has a diffusion effect on light. The reflective film 23 is disposed on a side of the color filter substrate 21 away from the display box 10, and the color filter substrate 21 is provided with a color resist layer 211 corresponding to the transparent pixel region W. The color-resist layer 211 includes color-resist materials of three colors of red (R), green (G), and blue (B), and pixel units of three colors of red (R), green (G), and blue (B) are correspondingly formed. The reflective film 23 is a finished reflective film, so that it is not necessary to deposit reflective metal on the array substrate 12 when the array substrate 12 is manufactured, and the difficulty of the manufacturing process is reduced. The reflective film 23 may be a flexible reflective film or a thin hard reflective film. The color film substrate 21 is arranged on the lower side of the display box 10, namely, on the side away from the external environment, when ambient light enters the display box, because no color filter layer is arranged, the light loss of the ambient light is reduced, after the ambient light enters the reflection box, the reflection of the reflection film is carried out after the ambient light passes through the color resistance layer, the reflected light directly enters the color resistance layer, and thus, the utilization rate of the three-color light of red (R), green (G) and blue (B) is higher. Moreover, because the light that passes through the color resistance layer passes through the display box again to avoid the direct directive people's eye of light after the filtering, match the diffusion of diffusion barrier 222 again, thereby can play better eyeshield effect.
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 through the first adhesive. The first adhesive glue may be OCA glue, and the manufactured reflective film 23 and the color film substrate 21 are adhered together by the OCA glue, so as to form the reflective box 20. Before bonding, need add reflection of light particle in OCA glues the inside to increase reflection of light effect of reflection box 20, because a plurality of reflection of light particles are to not equidirectional reflection light, be the diffuse reflection state, when reducing the reverberation loss, can also play certain eyeshield effect.
In this embodiment, the counter substrate 11 is provided with a black matrix 111 for spacing the plurality of transparent pixel regions W from each other, the counter substrate 11 is provided with a first planarization layer 112 for covering the black matrix 111, and the common electrode 113 is covered on a side of the first planarization layer 112 facing the liquid crystal layer 13. Of course, in other embodiments, the black matrix 111 may also be disposed on the color filter substrate 21 and separate the color resist layers 211 from each other, so that a planarization 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 filter substrate 21 facing the diffusion layer 22, and the color filter substrate 21 is provided with a second planarization layer 212 covering the color resist layer 211.
In this embodiment, the array substrate 12 and the color filter substrate 21 are respectively made of two different transparent substrates, and therefore, a second adhesive 30 needs to be disposed between the display box 10 and the reflection box 20, and the second adhesive 30 may be an OCA adhesive, and the display box 10 and the reflection box 20 are bonded together by the OCA adhesive. Of course, in other embodiments, the array substrate 12 and the color filter substrate 21 may also share one transparent substrate, that is, 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 this 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 engaged 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 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 on a side close to the counter substrate 11 is antiparallel to an alignment direction of the liquid crystal layer on a side close to 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, that is, the positive liquid crystal molecules and the dye liquid crystal molecules 132 in the liquid crystal layer 13 are twisted by 180 ° from bottom to top, so as to form an STN (super twist) display mode. Of course, in other embodiments, the liquid crystal molecules 131 may also adopt negative liquid crystal molecules (liquid crystal molecules with negative dielectric anisotropy), but 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 a 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 greater than that of the short axis, and the positive dye liquid crystal molecules have the characteristics that the long axis has strong light absorption capacity and the short axis has weak light absorption capacity. In the initial state, the dye liquid crystal molecules 132 have strong light absorption capability 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 purple black dye liquid crystal molecules, and the dye liquid crystal molecules 132 may be prepared by dyeing common liquid crystal molecules, but cannot be deflected in an electric field, and the liquid crystal molecules 131 are required to bring the dye liquid crystal molecules 132 to rotate in the electric field. By mixing the dye liquid crystal molecules 132 in the liquid crystal layer 13 and twisting 180 ° from bottom to top, the reflective color display panel in this embodiment does not need to have 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 scan lines and a plurality of data lines crossing each other in an insulated manner on a side facing the liquid crystal layer 13 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 scan line and data line 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 scale 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 are deflected along with the liquid crystal molecules 131 in the vertical electric field toward the vertical array substrate 12, so that the light absorption capability of the dye liquid crystal molecules 132 is weakened, 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, so that 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, the gate electrode and the scan line are located on the same layer and electrically connected, the gate electrode and the active layer are isolated by a gate insulating layer, the source electrode and the data line are electrically connected, and the drain electrode and the pixel electrode 121 are electrically connected.
The opposite substrate 11, the array substrate 12, and the color filter substrate 21 may be made of glass, acrylic, polycarbonate, or other materials. 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 structural diagram of a reflective color display panel in an initial state according to a second embodiment of the invention. Fig. 4 is a schematic structural 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 a reflective display according to a third embodiment of the present invention. As shown in fig. 3 to 5, a reflective color display panel according to a second embodiment of the present invention is substantially the same as the reflective color display panel according to the first embodiment (fig. 1 to 2), except that in this embodiment, the diffusion layer 22 is polymer dispersed liquid crystal, the reflective film 23 has a reflective metal layer 231 thereon, the color filter 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 an eye protection function is required or the external environment light is bright, 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 the reflective box 20 has a light scattering effect, and thus the reflective box 20 is in a diffuse reflection state. As shown in fig. 5, when the eye protection function is not required or the external light is weak, a voltage is applied to the reflective metal layer 231 and the transparent electrode 213, a strong vertical electric field is formed between the reflective metal layer 231 and the transparent electrode 213 (E2 in fig. 5), 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 mirror reflection state, thereby enhancing the brightness of the display panel.
In this embodiment, the diffusion layer 22 is made of polymer dispersed liquid crystal, and the polymer dispersed liquid crystal is controlled to switch between the fog state and the transparent state, so that the reflection cell 20 can switch between the diffuse reflection state and the specular reflection state, which is more convenient for users to use.
It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the first embodiment, and are not described herein again.
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 a reflective color display panel as described above, the method comprising:
a display box 10 is provided, the display box 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, and a plurality of transparent pixel regions W distributed in an array are disposed on the counter substrate 11. The display box 10 in this embodiment does not need to be provided with a color filter layer.
As shown in fig. 1, in an initial state, the positive liquid crystal molecules and the dye liquid crystal molecules 132 are aligned parallel to the opposite substrate 11 and the array substrate 12, an alignment direction of the liquid crystal layer 13 on a side close to the opposite substrate 11 is antiparallel to an alignment direction of the liquid crystal layer 13 on a side close to 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. It is understood that the opposite substrate 11 and the array substrate 12 are provided with alignment layers on sides 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 scan 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.
And providing a reflection box 20, wherein 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 region 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 thin hard film, for example, a material with strong light reflection capability such as aluminum (Al) or silver (Ag) may be plated, and the reflective film 23 may be directly formed as a conventional ready-made product without manufacturing the reflective film 23 during the manufacturing of 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 bonded to the color film substrate 21 through 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 bonded together at the periphery by a frame sealing adhesive.
Finally, the manufactured display cell 10 and the reflection cell 20 are bonded together by the second adhesive 30, and specifically, the reflection cell 20 is bonded below the display cell 10, i.e., on the side away from the external environment.
In this document, the terms of upper, lower, left, right, front, rear and the like are used to define the positions of the structures in the drawings and the positions of the structures relative to each other, and are only used for the sake of clarity and convenience in technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims. It is also to be understood that the terms "first" and "second," etc., are used herein for descriptive purposes only and are not to be construed as limiting in number or order.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A reflection type color display panel comprising a display box (10) for controlling gray-scale luminance and a reflection box (20) laminated under the display box (10);
the display box (10) comprises an opposite substrate (11), an array substrate (12) arranged opposite to the opposite substrate (11) and a liquid crystal layer (13) positioned between the opposite substrate (11) and the array substrate (12), wherein a plurality of transparent pixel regions (W) distributed in an array form are arranged on the opposite substrate (11);
the reflection box (20) comprises a color film substrate (21), a reflection film (23) and a diffusion layer (22) located between the color film substrate (21) and the reflection film (23), the reflection film (23) is arranged on one side, 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).
2. A reflective color display panel according to claim 1, wherein the diffusion layer (22) comprises a first adhesive and reflective particles mixed in the first adhesive, and the reflective film (23) is bonded to the color filter substrate (21) by the first adhesive.
3. A reflective color display panel according to claim 1, wherein the diffusion layer (22) is a polymer dispersed liquid crystal, the reflective film (23) has a reflective metal layer (231) thereon, the color filter substrate (21) is provided with a transparent electrode (213) on a side facing the reflective film (23), and the polymer dispersed liquid crystal is switchable between a fog state and a transparent state.
4. A 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).
5. A reflective color display panel according to claim 4, wherein the liquid crystal layer (13) comprises 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 in parallel with the counter substrate (11) and the array substrate (12), an alignment direction of the liquid crystal layer (13) on a side close to the counter substrate (11) is antiparallel to an alignment direction of the liquid crystal layer on a side close to 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.
6. A reflective color display panel according to claim 1, wherein said counter substrate (11) is provided with a black matrix (111) which spaces said 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).
7. A reflective color display panel according to claim 1, wherein the color resist layer (211) is provided on a side of the color filter substrate (21) facing the diffusion layer (22).
8. A reflective color display panel according to claim 7, wherein a second planarization layer (212) is provided on the color filter substrate (21) so as to cover the color resist layer (211).
9. A display device comprising a reflective color display panel according to any one of claims 1 to 8.
10. A method of manufacturing a reflective color display panel, the method being for manufacturing a reflective color display panel according to any one of claims 1 to 8, the method comprising:
providing a display box (10), wherein the display box (10) comprises an opposite substrate (11), an array substrate (12) arranged opposite to the opposite substrate (11) and a liquid crystal layer (13) positioned between the opposite substrate (11) and the array substrate (12), and a plurality of transparent pixel regions (W) distributed in an array manner are arranged on the opposite 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, away from the color film substrate (21), of the diffusion layer (22), and a color resistance layer (211) corresponding to the transparent pixel region (W) is arranged on the color film substrate (21);
and adhering the reflection box (20) to the lower part of the display box (10).
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| CN114815376B (en) | 2024-01-30 |
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