CN110058470B - Display panel, manufacturing method thereof and display device - Google Patents
Display panel, manufacturing method thereof and display device Download PDFInfo
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- CN110058470B CN110058470B CN201910509659.2A CN201910509659A CN110058470B CN 110058470 B CN110058470 B CN 110058470B CN 201910509659 A CN201910509659 A CN 201910509659A CN 110058470 B CN110058470 B CN 110058470B
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/1391—Bistable or multi-stable liquid crystal cells
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
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Abstract
A display panel, a manufacturing method thereof and a display device are provided. The display panel comprises a first substrate and a second substrate which are oppositely arranged, wherein one of the first substrate and the second substrate is provided with a plurality of pixel electrodes which are arranged in an array; and the bistable liquid crystal is arranged between the first substrate and the second substrate, and the arrangement directions of the bistable liquid crystal in the corresponding areas of the pixel electrodes are not completely the same, so that the colors of light rays reflected by the bistable liquid crystal in the corresponding areas of the pixel electrodes in a P state are not completely the same, and the texture state of the bistable liquid crystal in the corresponding areas of the pixel electrodes is controlled by the pixel electrodes, so that multi-color display can be realized.
Description
Technical Field
The present disclosure relates to display devices, and particularly to a display panel, a method for manufacturing the display panel, and a display device.
Background
The bistable liquid crystal has three structural states of P state, FC state and H state, the P state and the FC state do not need to be maintained by voltage, the H state needs to be maintained at high voltage, and visible light can be reflected in the P state to present color display. Moreover, the orientation of the bistable liquid crystal changes, and the color of the visible light reflected in the P state changes accordingly. Under the action of a certain electric field, the three states can be mutually converted, and the manufactured display products mainly comprise advertising boards, teaching blackboards, draft boards or copying boards for students and the like.
In the manufactured display product, the bistable liquid crystal is positioned between the array substrate and the glass substrate, and the plate surfaces of the opposite sides of the array substrate and the glass substrate are planes, so that the arrangement directions of the bistable liquid crystal are completely the same, the display product can only display two colors, one is black displayed by a black substrate on the array substrate in an FC state, and the other is a color represented by specific color light reflected by the bistable liquid crystal in a P state, and the multicolor display cannot be realized.
Disclosure of Invention
To solve at least one of the above-mentioned technical problems, there is provided a display panel capable of realizing a multicolor display in a true sense.
The invention also provides a manufacturing method of the display panel and display equipment.
The display panel provided by the embodiment of the invention comprises: the pixel structure comprises a first substrate and a second substrate which are oppositely arranged, wherein one of the first substrate and the second substrate is provided with a plurality of pixel electrodes which are arranged in an array; and the bistable liquid crystal is arranged between the first substrate and the second substrate, and the arrangement directions of the bistable liquid crystal in the corresponding areas of the pixel electrodes are not completely the same.
Optionally, at least one of the opposing surfaces of the first substrate and the second substrate is provided with a protruding structure, and the protruding structure is used for changing the arrangement direction of the bistable liquid crystal.
Optionally, the plurality of pixel electrodes include a plurality of sets of a first pixel electrode, a second pixel electrode, and a third pixel electrode, and the protruding structure corresponds to at least one of the first pixel electrode, the second pixel electrode, and the third pixel electrode.
Optionally, the protrusion structures include a first protrusion structure and a second protrusion structure, and the first protrusion structure and the second protrusion structure correspond to any two positions of the first pixel electrode, the second pixel electrode, and the third pixel electrode.
Optionally, the raised structure is triangular or trapezoidal in shape.
Optionally, a polymer is disposed in the bistable liquid crystal, and the polymer is used for changing the arrangement direction of the bistable liquid crystal.
Optionally, at least one of the opposite plate surfaces of the first substrate and the second substrate is provided with an alignment liquid coating.
Optionally, the first substrate is an array substrate, the second substrate is a glass substrate, and a black substrate is disposed on a surface of the array substrate, the surface facing away from the glass substrate.
The display device provided by the embodiment of the invention comprises the display panel in any one of the embodiments.
The method for manufacturing a display panel according to any one of the embodiments provided in the present invention includes:
obtaining a first substrate and a second substrate, wherein one of the first substrate and the second substrate is provided with a plurality of pixel electrodes arranged in an array;
dropping bistable liquid crystal on one of the first substrate and the second substrate;
and aligning the first substrate and the second substrate to ensure that the arrangement directions of the bistable liquid crystals in the corresponding areas of the pixel electrodes are not completely the same.
Optionally, between the step of obtaining a first substrate and a second substrate, and forming a plurality of pixel electrodes arranged in an array on one of the first substrate and the second substrate, and the step of dropping bistable liquid crystal on one of the first substrate and the second substrate, the method further includes:
and forming a convex structure on at least one of the opposite plate surfaces of the first substrate and the second substrate, wherein the convex structure is used for changing the arrangement direction of the bistable liquid crystal.
Optionally, a polymer is disposed in the bistable liquid crystal, and the step of aligning the cell with the first substrate and the second substrate includes: and loading a set voltage on the pixel electrode when the ultraviolet light is cured on the first substrate and the second substrate of the cell so as to change the arrangement direction of the bistable liquid crystal.
Compared with the prior art, in the display panel provided by the embodiment of the invention, one of the first substrate and the second substrate is provided with the plurality of pixel electrodes which are arranged in an array manner, the bistable liquid crystal is arranged between the first substrate and the second substrate, and the arrangement directions of the bistable liquid crystal in the corresponding areas of the pixel electrodes are not completely the same, so that the colors of light rays reflected by the bistable liquid crystal in the corresponding areas of the pixel electrodes in the P state are not completely the same, and the texture state of the bistable liquid crystal in the corresponding areas of the pixel electrodes is controlled by the pixel electrodes, so that multi-color display can be realized.
Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the disclosure. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments herein and are incorporated in and constitute a part of this specification, illustrate embodiments herein and are not to be construed as limiting the embodiments herein.
Fig. 1 is a schematic cross-sectional structural diagram of a display panel according to an embodiment of the invention;
fig. 2 to 6 are schematic cross-sectional structural diagrams of the display panel shown in fig. 1 in different display states;
FIG. 7 is a schematic diagram illustrating the switching of different structural phases of the bistable liquid crystal.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 6 is:
100 a first substrate, 200 a second substrate, 300 bistable liquid crystal, 401 a first protrusion structure, 402 a second protrusion structure, 501 a first pixel electrode, 502 a second pixel electrode, 503 a third pixel electrode, 600 an alignment liquid coating, 700 a black substrate and 800 a common electrode.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
As shown in fig. 1 to 6, the display panel provided in the embodiment of the present invention includes: the liquid crystal display panel comprises a first substrate 100 and a second substrate 200 which are oppositely arranged, wherein one of the first substrate 100 and the second substrate 200 is provided with a plurality of pixel electrodes which are arranged in an array; and a bistable liquid crystal 300 disposed between the first substrate 100 and the second substrate 200, and the arrangement directions of the bistable liquid crystal 300 in the P state of the regions corresponding to the respective pixel electrodes are not completely the same.
In the display panel, one of the first substrate 100 and the second substrate 200 is provided with a plurality of pixel electrodes arranged in an array, the bistable liquid crystal 300 is arranged between the first substrate 100 and the second substrate 200, and the arrangement directions of the bistable liquid crystal 300 in the corresponding area of each pixel electrode are not identical, so that the colors of light rays reflected by the bistable liquid crystal 300 in the corresponding area of each pixel electrode in a P state are not identical, and the texture state of the bistable liquid crystal 300 in the corresponding area of each pixel electrode is controlled by the pixel electrode, so that multi-color display can be realized.
In an exemplary embodiment, at least one of the opposing plate surfaces of the first substrate 100 and the second substrate 200 is provided with a protrusion structure, and the protrusion structure is configured to change the arrangement direction of the bistable liquid crystal 300, so that the arrangement direction of the bistable liquid crystal 300 in the protrusion structure corresponding region is different from the arrangement direction of the bistable liquid crystal 300 outside the protrusion structure corresponding region, and thus the color of the visible light reflected by the bistable liquid crystal 300 in the protrusion structure corresponding region in the P state is different from the color of the visible light reflected by the bistable liquid crystal 300 outside the protrusion structure corresponding region in the P state, and the texture state of the bistable liquid crystal 300 at each position is controlled by the pixel electrode to display different colors.
The plurality of pixel electrodes comprise a plurality of groups of first pixel electrodes 501, second pixel electrodes 502 and third pixel electrodes 503, and the protruding structures correspond to at least one of the first pixel electrodes 501, the second pixel electrodes 502 and the third pixel electrodes 503.
Such as: if the protruding structure corresponds to the first pixel electrode 501, the protruding structure changes the arrangement direction of the bistable liquid crystal 300 in the region corresponding to the first pixel electrode 501, and the color of light reflected by the bistable liquid crystal P in the region corresponding to the first pixel electrode 501 is different from the color of light reflected by the bistable liquid crystal P in the regions corresponding to the second pixel electrode 502 and the third pixel electrode 503; and/or; if the protruding structure corresponds to the second pixel electrode 502, the protruding structure changes the arrangement direction of the bistable liquid crystal 300 in the region corresponding to the second pixel electrode 502, and the color of light reflected by the bistable liquid crystal P in the region corresponding to the second pixel electrode 502 is different from the color of light reflected by the bistable liquid crystal P in the regions corresponding to the first pixel electrode 501 and the third pixel electrode 503; and/or; the convex structure corresponds to the position of the third pixel electrode 503, the convex structure changes the arrangement direction of the bistable liquid crystal 300 in the region corresponding to the third pixel electrode 503, and the color of the light reflected by the bistable liquid crystal P in the region corresponding to the third pixel electrode 503 is different from the color of the light reflected by the bistable liquid crystal P in the regions corresponding to the second pixel electrode 502 and the first pixel electrode 501.
It should be noted that, when the protruding structures correspond to the positions of the first pixel electrode 501, the second pixel electrode 502, and the third pixel electrode 503, the protruding structures corresponding to the position of the first pixel electrode 501, the protruding structures corresponding to the position of the second pixel electrode 502, and the protruding structures corresponding to the position of the third pixel electrode 503 may have different sizes and shapes, so that the bistable liquid crystal 300 corresponding to the first pixel electrode 501, the bistable liquid crystal 300 corresponding to the second pixel electrode 502, and the bistable liquid crystal 300 corresponding to the third pixel electrode 503 have different arrangement directions, and thus, in the P-state, visible light of three colors is corresponding to each other, and the texture state of the bistable liquid crystal 300 at each position is controlled by the pixel electrodes, so that different colors can be presented by mixing the visible light.
Preferably, the protruding structures include a first protruding structure 401 and a second protruding structure 402, and the first protruding structure 401 and the second protruding structure 402 correspond to any two positions of the first pixel electrode 501, the second pixel electrode 502, and the third pixel electrode 503. The first protruding structures 401 and the second protruding structures 402 are not identical in shape and size, so that the visible light colors of any adjacent first pixel electrode 501 and second pixel electrode 502 in the P state are different, the visible light colors of any adjacent second pixel electrode 502 and third pixel electrode 503 in the P state are also different, and the visible light colors of any adjacent first pixel electrode 501 and third pixel electrode 503 in the P state are also different.
Specifically, as shown in fig. 1 to 6, the protrusion structure includes a first protrusion structure 401 and a second protrusion structure 402, the third pixel electrode 503 is located between the first pixel electrode 501 and the second pixel electrode 502, the first protrusion structure 401 corresponds to the first pixel electrode 501, and the first protrusion structure 401 is configured to enable the bistable liquid crystal 300 in the area corresponding to the first pixel electrode 501 to reflect red light in the P-state; the second protrusion structure 402 corresponds to the second pixel electrode 502, and the second protrusion structure 402 is configured to enable the bistable liquid crystal 300 in the region corresponding to the second pixel electrode 502 to reflect blue light in the P state; the bistable liquid crystal 300 in the area corresponding to the third pixel electrode 503 reflects green light in the P state. The P-states of the bistable liquid crystal 300 are arranged in a curved, e.g., wavy, arrangement.
As shown in fig. 2, the bistable liquid crystal 300 in the region corresponding to the first pixel electrode 501, the region corresponding to the second pixel electrode 502, and the region corresponding to the third pixel electrode 503 is in a P state, and at this time, the red, green, and blue lights can be reflected, and finally, white light display is realized. In any one of the sets of the first pixel electrode 501, the second pixel electrode 502, and the third pixel electrode 503, the third pixel electrode 503 may be located between the first pixel electrode 501 and the second pixel electrode 502.
As shown in fig. 2, red light, blue light and green light are respectively reflected by the bistable liquid crystals in the areas corresponding to the first pixel electrode 501, the second pixel electrode 502 and the third pixel electrode 503 in the P state, and finally white light display is realized; after the voltage of the first pixel electrode 501, the second pixel electrode 502 and the third pixel electrode 503 is increased from zero to a high voltage threshold, it will generate a P-state to H-state transition:
as shown in fig. 3, when the voltages of the first pixel electrode 501, the second pixel electrode 502, and the third pixel electrode 503 are gradually decreased from high voltage to zero, the bistable liquid crystal 300 in the area corresponding to the first pixel electrode 501, the area corresponding to the second pixel electrode 502, and the area corresponding to the third pixel all returns to the FC state, and at this time, the bistable liquid crystal is in a transparent state, and the red, green, and blue lights respectively pass through the bistable liquid crystal 300 in the area corresponding to the first pixel electrode 501, the area corresponding to the second pixel electrode 502, and the area corresponding to the third pixel and are absorbed by the black substrate 700, thereby showing black.
As shown in fig. 4, when the voltage of the first pixel electrode 501 is rapidly reduced from high voltage to zero, the bistable liquid crystal 300 in the area corresponding to the first pixel electrode 501 is changed from an H state to a P state, and reflects red light, the bistable liquid crystal 300 in the areas corresponding to the second pixel electrode 502 and the third pixel electrode 503 is in an FC state, and green light, which passes through the bistable liquid crystal 300 in the area corresponding to the third pixel electrode 503, and blue light, which passes through the bistable liquid crystal 300 in the area corresponding to the second pixel electrode 502, are absorbed by the black substrate 700, so that red display is finally realized.
When the voltage of the second pixel electrode 502 is rapidly reduced from high voltage to zero, the bistable liquid crystal 300 in the area corresponding to the second pixel electrode 502 is changed from an H state to a P state, blue light is reflected, the bistable liquid crystal 300 in the area corresponding to the first pixel electrode 501 and the area corresponding to the third pixel electrode 503 are both in an FC state, the green light is absorbed by the black substrate 700 through the bistable liquid crystal 300 in the area corresponding to the third pixel electrode 503, and the red light is absorbed by the bistable liquid crystal 300 in the area corresponding to the first pixel electrode 501, so that blue display (not shown in the figure) is finally realized.
When the voltage of the third pixel electrode 503 is rapidly reduced from high voltage to zero, the bistable liquid crystal 300 in the region corresponding to the third pixel electrode 503 is changed from an H state to a P state, green light is reflected, the bistable liquid crystals 300 in the regions corresponding to the first pixel electrode 501 and the second pixel electrode 502 are both in an FC state, the blue light is absorbed by the black substrate 700 through the bistable liquid crystal 300 in the region corresponding to the second pixel electrode 503, and the red light is absorbed by the bistable liquid crystal 300 in the region corresponding to the first pixel electrode 501, so that green display (not shown in the figure) is finally realized.
As shown in fig. 5, the voltages of the first pixel electrode 501 and the third pixel electrode 503 are rapidly decreased from high voltage to zero, the bistable liquid crystal 300 in the area corresponding to the first pixel electrode 501 and the area corresponding to the third pixel electrode 503 is changed from an H state to a P state, and reflects red light and green light, the bistable liquid crystal 300 in the area corresponding to the second pixel electrode 502 is changed from an H state to an FC state (or changed from a P state to an FC state), and the blue light is absorbed by the black substrate 700 through the bistable liquid crystal 300 in the area corresponding to the second pixel electrode 502, so that yellow display is finally achieved.
Of course, as shown in fig. 6, the voltages of the first pixel electrode 501 and the second pixel electrode 502 are rapidly decreased from high voltage to zero, the bistable liquid crystal 300 in the area corresponding to the first pixel electrode 501 and the area corresponding to the second pixel electrode 502 is changed from an H state to a P state, red light and blue light is reflected, the bistable liquid crystal 300 in the area corresponding to the third pixel electrode 503 is changed from an H state to an FC state (or changed from a P state to an FC state), green light is absorbed by the black substrate 700 through the bistable liquid crystal 300 in the area corresponding to the third pixel electrode 503, and finally, the red light and the blue light are mixed to present a corresponding color display.
Certainly, the voltages of the second pixel electrode 502 and the third pixel electrode 503 may be rapidly decreased from a high voltage to zero, the bistable liquid crystal 300 in the area corresponding to the second pixel electrode 502 and the area corresponding to the third pixel electrode 503 is changed from an H state to a P state, blue light and green light are reflected, the bistable liquid crystal 300 in the area corresponding to the first pixel electrode 501 is changed from an H state to an FC state (or changed from a P state to an FC state), the red light is absorbed by the black substrate 700 through the bistable liquid crystal 300 in the area corresponding to the first pixel electrode 501, and finally, the green light and the blue light are mixed to present a corresponding color display (not shown in the figure).
Preferably, as shown in fig. 1 to fig. 6, the protrusion structure may be in a triangular shape or an upright trapezoidal shape, which can achieve the purpose of the present application, and the purpose of the protrusion structure does not depart from the design concept of the present invention, and will not be described herein again, which all fall within the protection scope of the present society. The size and the inclination angle of the convex structure can be designed according to the size of bistable liquid crystal molecules and the axle distance of bistable liquid crystal required by reflected light, and the specific size needs to be adjusted according to the actual display effect, such as: the raised structures are dimensioned 80, 100 or 120 times as large as a single bistable liquid crystal molecule, etc.
Preferably, at least one of the opposing surfaces of the first substrate 100 and the second substrate 200 is provided with the alignment liquid coating 600, and the alignment liquid coating 600 can improve the contrast of the color reflective display. The alignment liquid coating 600 may be an alignment liquid suitable for a vertical alignment display mode. Such as: the alignment liquid is polyimide.
Specifically, as shown in fig. 1 to 6, the alignment liquid coating 600 is disposed on the opposite surfaces of the first substrate 100 and the second substrate 200.
The first substrate 100 is an array substrate, the second substrate 200 is a glass substrate, the glass substrate is provided with a common electrode 800, and a black substrate 700 is disposed on a surface of the array substrate facing away from the glass substrate.
The convex structure can be manufactured on the array substrate through a one-time composition process, PI liquid is coated on the opposite plate surfaces of the array substrate and the glass substrate, and finally the display panel is manufactured by the box array substrate and the glass substrate. The "patterning process" referred to in this embodiment includes processes of depositing a film layer, coating a photoresist, mask exposure, development, etching, stripping a photoresist, and the like.
In another exemplary embodiment, a transparent polymer is disposed in the bistable liquid crystal 300, and the polymer is used to change the arrangement direction of the bistable liquid crystal 300, so that the arrangement direction of the bistable liquid crystal 300 in the polymer corresponding region is different from the arrangement direction of the bistable liquid crystal 300 outside the polymer corresponding region, and thus the color of the visible light reflected by the bistable liquid crystal 300 in the polymer corresponding region in the P state is different from the color of the visible light reflected by the bistable liquid crystal 300 outside the polymer corresponding region in the P state, and the texture state of the bistable liquid crystal 300 at each position can be controlled by the pixel electrode to display different colors.
Preferably, at least one of the opposing surfaces of the first substrate 100 and the second substrate 200 is provided with the alignment liquid coating 600, and the alignment liquid coating 600 can improve the contrast of the color reflective display. The alignment liquid coating 600 may be an alignment liquid suitable for a vertical alignment display mode. If the alignment liquid is polyimide.
Specifically, the alignment liquid coating 600 is disposed on the opposite surfaces of the first substrate 100 and the second substrate 200.
Specifically, the first substrate 100 is an array substrate, the second substrate 200 is a glass substrate, a common electrode 800 is disposed on a surface of the glass substrate facing the array substrate, an alignment liquid coating 600 is disposed on the common electrode 800, and a black matrix 700 is disposed on a surface of the array substrate facing away from the glass substrate.
Specifically, the plurality of pixel electrodes includes a plurality of sets of a first pixel electrode 501, a second pixel electrode 502, and a third pixel electrode 503.
When the cell array substrate and the glass substrate are aligned, the bistable liquid crystal 300 mixed with the polymer is dripped on the array substrate or the glass substrate, then setting voltages with different values are loaded on the first pixel electrode, the second pixel electrode and the third pixel electrode in the ultraviolet ray curing process of the cell array substrate and the glass substrate, the setting voltages can use sine wave voltage, cosine wave voltage or direct current voltage, and the like, for the sine wave voltage and the cosine wave voltage, the phases of the voltages loaded at the same time on any group of the first pixel electrode 501, the second pixel electrode 502 and the third pixel electrode 503 are different, for the direct current voltage, the voltage values loaded at the same time on any group of the first pixel electrode 501, the second pixel electrode 502 and the third pixel electrode 503 are different, so as to realize the rearrangement of the bistable liquid crystal 300 503, and lead the P state of the bistable liquid crystal 300 to be arranged in a curve way, for example, the first pixel electrode 501 and the second pixel electrode 502 adjacent to each other have different colors of visible light in the P state, the second pixel electrode 502 and the third pixel electrode 503 adjacent to each other have different colors of visible light in the P state, and the first pixel electrode 501 and the third pixel electrode 503 adjacent to each other have different colors of visible light in the P state. This implementation mode needs equipment transformation, and the common electrode 800 on the pixel electrode on the array substrate and the glass substrate needs to leak out simultaneously and supplies voltage, is not suitable for large-scale volume production.
The display device (not shown in the figures) provided by the embodiment of the invention comprises the display panel described in any embodiment.
The display device has all the advantages of the display panel described in any of the above embodiments, and details are not described herein.
The method for manufacturing a display panel (not shown in the figure) provided by the embodiment of the invention comprises the following steps:
obtaining a first substrate and a second substrate, wherein a plurality of pixel electrodes arranged in an array are formed on one of the first substrate and the second substrate;
dropping bistable liquid crystal on one of the first substrate and the second substrate;
and aiming at the first substrate and the second substrate, the arrangement directions of the bistable liquid crystals in the corresponding areas of the pixel electrodes are not completely the same.
According to the manufacturing method of the display panel, one of a first substrate and a second substrate of the manufactured display panel is provided with a plurality of pixel electrodes which are arranged in an array mode, the bistable liquid crystal is arranged between the first substrate and the second substrate, and the arrangement directions of the bistable liquid crystal in the corresponding area of each pixel electrode are not identical, so that the colors of light rays reflected by the bistable liquid crystal in the corresponding area of each pixel electrode in a P state are not identical, and the texture state of the bistable liquid crystal 300 in the corresponding area of each pixel electrode is controlled through the pixel electrode, so that multi-color display can be achieved.
Between the step of obtaining the first substrate and the second substrate, and forming the plurality of pixel electrodes arranged in an array on one of the first substrate and the second substrate, and the step of dropping the bistable liquid crystal on one of the first substrate and the second substrate, the method may further include: the convex structure is formed on at least one of the opposite plate surfaces of the first substrate and the second substrate, and is used for changing the arrangement direction of the bistable liquid crystal when the cell is aligned, so that the arrangement directions of the bistable liquid crystal in the corresponding area of each pixel electrode are not completely the same, and the convex structure can be manufactured through a one-time composition process and is used for changing the arrangement direction of the bistable liquid crystal 300, so that the arrangement directions of the bistable liquid crystal in the corresponding area of each pixel electrode are not completely the same.
The convex structure is formed on the first substrate or the second substrate in a simple mode, and mass production of the display panel is easier to realize.
Specifically, the bump structure includes a first bump structure and a second bump structure, the pixel electrode includes a first pixel electrode, a second pixel electrode, and a third pixel electrode, the first bump structure is disposed on the first pixel electrode, and the second bump structure is disposed on the second pixel electrode.
It is of course also possible that the bistable liquid crystal is provided with a polymer, and that the steps of aligning the first and second substrates of the cell comprise: for the first substrate and the second substrate of the cell, when the ultraviolet light is cured, a set voltage is applied to the pixel electrodes to change the arrangement direction of the bistable liquid crystal, so that the arrangement directions of the bistable liquid crystal in the corresponding regions of each pixel electrode are not completely the same, and the purpose of the present application can also be achieved.
The method specifically comprises the following steps: the plurality of pixel electrodes comprise a plurality of groups of first pixel electrodes, second pixel electrodes and third pixel electrodes, the first substrate is an array substrate, the second substrate is a glass substrate, bistable liquid crystal mixed with polymer is dripped on the array substrate or the glass substrate, then setting voltages with different values are required to be loaded on the first pixel electrodes, the second pixel electrodes and the third pixel electrodes in the ultraviolet curing process of the cell array substrate and the glass substrate, the setting voltages can use sine wave voltage, cosine wave voltage, direct current voltage and the like, for the sine wave voltage and the cosine wave voltage, the phases of the loading voltages at the same time of any group of the first pixel electrodes, the second pixel electrodes and the third pixel electrodes are different, for the direct current voltage, the loading voltages at the same time of any group of the first pixel electrodes, the second pixel electrodes and the third pixel electrodes are different, therefore, the rearrangement of the bistable liquid crystal is realized, so that the P state of the bistable liquid crystal is in a curve type arrangement, such as a wave type arrangement, and thus, the corresponding visible light colors of any adjacent first pixel electrode and second pixel electrode in the P state are different, the corresponding visible light colors of any adjacent second pixel electrode and third pixel electrode in the P state are also different, and the corresponding visible light colors of any adjacent first pixel electrode and third pixel electrode in the P state are also different. This implementation mode needs to carry out the equipment transformation, and the common electrode that needs on the pixel electrode on the array substrate and the glass substrate to leak simultaneously supplies voltage, is not suitable for large-scale volume production.
In summary, in the display panel provided in the embodiments of the present invention, one of the first substrate and the second substrate is provided with a plurality of pixel electrodes arranged in an array, the bistable liquid crystal is disposed between the first substrate and the second substrate, and the arrangement directions of the bistable liquid crystal in the corresponding areas of the pixel electrodes are not completely the same, so that the colors of the light rays reflected by the bistable liquid crystal in the corresponding areas of the pixel electrodes in the P state are not completely the same, and the texture state of the bistable liquid crystal in the corresponding areas of the pixel electrodes is controlled by the pixel electrodes, so as to implement multi-color display.
In the description herein, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms herein can be understood by those of ordinary skill in the art as appropriate.
In the description of the specification, reference to the term "one embodiment," "some embodiments," "a specific embodiment," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example herein. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although the embodiments disclosed herein are described above, the descriptions are only for the convenience of understanding the embodiments and are not intended to limit the disclosure. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure, and that the scope of the disclosure herein may be limited only by the appended claims.
Claims (6)
1. A display panel, comprising:
the pixel structure comprises a first substrate and a second substrate which are oppositely arranged, wherein one of the first substrate and the second substrate is provided with a plurality of pixel electrodes which are arranged in an array manner, and the plurality of pixel electrodes comprise a plurality of groups of first pixel electrodes, second pixel electrodes and third pixel electrodes; and
the bistable liquid crystal is arranged between the first substrate and the second substrate, and the arrangement directions of the bistable liquid crystal in the corresponding areas of the pixel electrodes are not completely the same;
wherein, the arrangement directions of the bistable liquid crystal in the corresponding areas of the pixel electrodes are not completely the same, and the arrangement directions comprise:
at least one of the opposite plate surfaces of the first substrate and the second substrate is provided with a protruding structure, the protruding structure is used for changing the arrangement direction of the bistable liquid crystal, the protruding structure comprises a first protruding structure and a second protruding structure, the first pixel electrode corresponds to the first protruding structure, the second pixel electrode corresponds to the second protruding structure, and the first protruding structure and the second protruding structure are different in size.
2. The display panel according to claim 1, wherein the convex structure has a triangular shape or a trapezoidal shape.
3. The display panel according to claim 1 or 2, wherein at least one of the opposing plate surfaces of the first substrate and the second substrate is provided with an alignment liquid coating layer.
4. The display panel according to claim 3, wherein the first substrate is an array substrate, the second substrate is a glass substrate, and a black matrix is disposed on a surface of the array substrate facing away from the glass substrate.
5. A display device characterized by comprising the display panel according to any one of claims 1 to 4.
6. A method for manufacturing a display panel according to any one of claims 1 to 4, comprising:
the method comprises the steps of obtaining a first substrate and a second substrate, wherein one of the first substrate and the second substrate is provided with a plurality of pixel electrodes which are arranged in an array mode, and the plurality of pixel electrodes comprise a plurality of groups of first pixel electrodes, second pixel electrodes and third pixel electrodes;
dropping bistable liquid crystal on one of the first substrate and the second substrate;
the first substrate and the second substrate are aligned, so that the arrangement directions of the bistable liquid crystals in the corresponding areas of the pixel electrodes are not completely the same;
wherein, between the step of obtaining a first substrate and a second substrate, one of the first substrate and the second substrate having a plurality of pixel electrodes arranged in an array and the step of dropping bistable liquid crystal on one of the first substrate and the second substrate, the method further comprises:
the display panel comprises a first substrate, a second substrate and a plurality of pixel electrodes, wherein a protruding structure is formed on at least one of the opposite plate surfaces of the first substrate and the second substrate, the protruding structure comprises a first protruding structure and a second protruding structure, the first pixel electrode corresponds to the first protruding structure, the second pixel electrode corresponds to the second protruding structure, and the first protruding structure and the second protruding structure are different in size.
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| CN113917754B (en) * | 2021-10-21 | 2023-11-03 | 京东方科技集团股份有限公司 | Liquid crystal handwriting device and display method thereof |
| CN113934065B (en) * | 2021-10-22 | 2023-11-03 | 京东方科技集团股份有限公司 | Liquid crystal handwriting board, display method thereof and handwriting device |
| CN117420711A (en) * | 2023-06-12 | 2024-01-19 | 山东蓝贝思特教装集团股份有限公司 | Multicolor liquid crystal writing device and method |
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