CN106019756A - Display panel and manufacturing method thereof, as well as curved-surface display panel and curved-surface display device - Google Patents
Display panel and manufacturing method thereof, as well as curved-surface display panel and curved-surface display device Download PDFInfo
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- CN106019756A CN106019756A CN201610625926.9A CN201610625926A CN106019756A CN 106019756 A CN106019756 A CN 106019756A CN 201610625926 A CN201610625926 A CN 201610625926A CN 106019756 A CN106019756 A CN 106019756A
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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
- G02F1/15—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 an electrochromic effect
- G02F1/153—Constructional details
- G02F1/155—Electrodes
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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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or 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
- G02F1/15—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 an electrochromic effect
- G02F1/153—Constructional details
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Abstract
The invention discloses a display panel and a manufacturing method thereof, as well as a curved-surface display panel and a curved-surface display device, which are used for avoiding phenomena including light leak, colour mixture and aperture ratio reduction caused in a curving process of the display panel. The display panel comprises a first substrate, a second substrate, a pixel structure, an electrochromic material layer, first transparent electrodes and second transparent electrodes, wherein the pixel structure is distributed to form an array, and is arranged on one side, away from the second substrate, of the first substrate; the electrochromic material layer is arranged between the first substrate and the second substrate; the first transparent electrodes are arranged between the electrochromic material layer and the pixel structure, and have the same shapes as opening areas of the pixel structure; the second transparent electrodes are arranged between the electrochromic material layer and the second substrate, and at least part of orthographic projections of the second transparent electrodes on the first substrate or the second substrate are overlapped with orthographic projections of the first transparent electrodes on the first substrate or the second substrate.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a manufacturing method of the display panel, a curved surface display panel and a curved surface display device.
Background
With the development of display technology, new display products are coming out endlessly. At present, curved surface display is increasingly popular with panel manufacturers and consumers as a new display technology. The curved display panel is provided with the curved display screen, and the consistency of the distance from each pixel of the display screen to human eyes can be realized, so that the visual perception of human eyes can be more truly restored, a better telepresence impression is provided for viewers, and the curved display panel is more competitive with the traditional flat display panel.
When a curved display panel is manufactured, an original flat display panel is bent, and relative displacement to the left or the right is generated in the horizontal direction by using the center of the display panel as a reference between an opposite substrate (Color Filter) and an array substrate (TFT), so that a black matrix, which originally corresponds to the position of a metal wire on the array substrate, on the opposite substrate in the left and right end regions is displaced, and the black matrix shields a display region (Active area), thereby reducing the aperture ratio. Referring to fig. 1(a), the liquid crystal display panel includes a color filter substrate 11 and an array substrate 12 which are arranged in a box-to-box manner, the array substrate 12 includes a pixel electrode 121 structure, the color filter substrate 11 includes a black matrix 111 pattern, wherein an orthographic projection of the black matrix on the array substrate does not overlap with a projection of a pixel opening area on the array substrate. Specifically, when a curved display panel is manufactured, the display panel shown in fig. 1(a) is bent, and since the color film substrate and the array substrate are located in different upper and lower regions, when a force is applied, the stress applied to the upper and lower substrates is different, so that the relative displacement generated between the upper and lower substrates is different, and the curved display panel with the structure shown in fig. 1(b) is generated, and the black matrix is shifted to shield a part of the pixel opening region. Therefore, display of the display panel is not uniform under the same driving condition, and adverse effects such as light leakage, color mixing, and reduction of aperture ratio are generated, thereby affecting the display effect.
In summary, in the conventional curved display panel, light leakage, color mixing and aperture ratio reduction may occur in the bending process of the array substrate during the manufacturing process.
Disclosure of Invention
The invention provides a display panel, a manufacturing method thereof, a curved surface display panel and a curved surface display device, which are used for avoiding the phenomena of light leakage, color mixing and aperture opening ratio reduction caused in the bending process of the display panel.
An embodiment of the present invention provides a display panel, including:
a first substrate base plate and a second substrate base plate;
the pixel structures are arranged on one side of the first substrate base plate, which is far away from the second substrate base plate, and are arranged in an array manner;
an electrochromic material layer disposed between the first substrate base and the second substrate base;
the first transparent electrode is arranged between the electrochromic material layer and the pixel structure and has the same shape as the opening area of the pixel structure;
a second transparent electrode disposed between the electrochromic material layer and the second substrate, at least a partial orthographic projection of the second transparent electrode on the first substrate or the second substrate overlapping with an orthographic projection of the first transparent electrode on the first substrate or the second substrate;
the first transparent electrode and the second transparent electrode are used for enabling the electrochromic material arranged between the first transparent electrode and the second transparent electrode to have a light transmission effect under the condition of a preset voltage difference.
In a possible implementation manner, in the display panel provided by the embodiment of the present invention, the pixel structure includes a pixel electrode, and the first transparent electrode is located between the pixel electrode and the first substrate.
In a possible implementation manner, in the display panel provided by an embodiment of the present invention, the display panel further includes: and the insulating layer is arranged between the pixel electrode and the first transparent electrode.
In a possible implementation manner, in the display panel provided by the embodiment of the present invention, the first transparent electrode is located between the first substrate and the electrochromic material layer.
In a possible implementation manner, an embodiment of the present invention provides the above display panel, wherein an orthographic projection of the second transparent electrode on the first substrate or the second substrate overlaps with an orthographic projection of the electrochromic material layer on the first substrate or the second substrate.
Correspondingly, the embodiment of the invention also provides a curved display panel, which comprises any one of the display panels provided by the embodiments of the invention, wherein the section of the display panel along the extension direction of the long axis is an arc-shaped section, and the bending direction of the arc-shaped section is far away from the second substrate.
In a possible implementation manner, in the curved display panel provided in an embodiment of the present invention, the curved display panel further includes:
the opposite substrate is arranged on one side of the first substrate far away from the second substrate, and the liquid crystal layer is arranged between the first substrate and the opposite substrate; wherein,
the opposite substrate is bent in the same direction as the first substrate.
In a possible implementation manner, in the curved display panel provided in an embodiment of the present invention, the curved display panel further includes:
and the curved backlight source is arranged on one side of the second substrate base plate, which is far away from the second transparent electrode, and the bending direction of the curved backlight source is the same as that of the first substrate base plate.
Correspondingly, the embodiment of the invention also provides a curved surface display device which comprises any one of the curved surface display panels provided by the embodiment of the invention.
Correspondingly, an embodiment of the present invention further provides a method for manufacturing a display panel, where the method includes:
forming a pattern of pixel structures which are arranged in an array manner on one side of the first substrate far away from the second substrate;
forming an electrochromic material layer between the first substrate base plate and the second substrate base plate;
forming a pattern of a first transparent electrode having the same shape as the opening region of the pixel structure between the electrochromic material layer and the pixel structure;
forming a pattern of a second transparent electrode between the electrochromic material layer and the second substrate, wherein at least a partial orthographic projection of the second transparent electrode on the first substrate or the second substrate is overlapped with an orthographic projection of the first transparent electrode on the first substrate or the second substrate;
the first transparent electrode and the second transparent electrode are used for enabling the electrochromic material arranged between the first transparent electrode and the second transparent electrode to have a light transmitting effect under a preset voltage difference, and the electrochromic material in other areas has a light shading effect.
The invention has the following beneficial effects:
the embodiment of the invention provides a display panel, a manufacturing method thereof, a curved surface display panel and a curved surface display device, wherein the display panel comprises: a first substrate base plate and a second substrate base plate; the pixel structures are arranged on one side of the first substrate base plate, which is far away from the second substrate base plate, and are arranged in an array manner; an electrochromic material layer disposed between the first substrate base and the second substrate base; the first transparent electrode is arranged between the electrochromic material layer and the pixel structure and has the same shape as the opening area of the pixel structure; a second transparent electrode disposed between the electrochromic material layer and the second substrate, at least a partial orthographic projection of the second transparent electrode on the first substrate or the second substrate overlapping with an orthographic projection of the first transparent electrode on the first substrate or the second substrate; the first transparent electrode and the second transparent electrode are used for enabling the electrochromic material arranged between the first transparent electrode and the second transparent electrode to have a light transmission effect under the condition of a preset voltage difference. Specifically, in the display panel provided in the embodiment of the present invention, the first transparent electrode which is the same as the opening region of the pixel structure is disposed below the pixel structure, the second transparent electrode is disposed below the first transparent electrode, and the electrochromic material layer is disposed between the first transparent electrode and the second transparent electrode, so that when the voltage difference between the first transparent electrode and the second transparent electrode reaches the preset voltage difference, the electrochromic material layer between the first transparent electrode and the second transparent electrode has a light transmitting function, and the electrochromic material in other regions has a light shielding function. The first transparent electrode is the same as the opening area of the pixel structure, so that the electrochromic material layer positioned in the orthographic projection of the opening area has a light transmitting function, and the electrochromic material layer not positioned in the orthographic projection of the opening area has a light shielding function, namely the first transparent electrode controls the electrochromic material to form a black matrix, and the size of a light shielding part formed by the electrochromic material is correspondingly changed along with the change of the size of the first transparent electrode. Therefore, the shading structure provided by the embodiment of the invention is composed of the electrochromic material layer, the first transparent electrode and the second transparent electrode, when the display panel is bent, the pixel structure and the first transparent electrode are respectively positioned at two sides of the first substrate, so that the stress direction and the stress magnitude are consistent, and the phenomenon of dislocation between the first transparent electrode and the pixel structure can not be generated, thereby avoiding the phenomena of light leakage, color mixing and aperture ratio reduction caused by the dislocation between the shading structure and the pixel structure when the display panel is bent, and improving the display effect.
Drawings
Fig. 1(a) and 1(b) are diagrams illustrating a structure of a display panel according to the prior art;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a display panel after bending according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second display panel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a third display panel according to an embodiment of the invention;
fig. 6 is a schematic structural diagram of a fourth display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a fifth display panel according to an embodiment of the disclosure;
fig. 8 is a schematic structural diagram of a sixth display panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a manufacturing method of a display panel according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a curved display panel according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of another curved display panel according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a display panel, a manufacturing method thereof, a curved surface display panel and a curved surface display device, which are used for avoiding the phenomena of light leakage, color mixing and aperture opening ratio reduction caused in the bending process of the display panel.
The following describes in detail specific embodiments of a display panel, a manufacturing method thereof, a curved display panel, and a curved display device according to embodiments of the present invention with reference to the accompanying drawings.
The shapes and sizes of the components in the drawings do not reflect the true scale of the display panel and the curved display panel, and are intended to be illustrative only of the present invention.
Referring to fig. 2, a display panel 2 according to an embodiment of the present invention includes: a first substrate base 21 and a second substrate base 22; the pixel structures 23 are arranged on one side of the first substrate base plate 21 far away from the second substrate base plate 22 and are arranged in an array manner; an electrochromic material layer 24 disposed between the first substrate base 21 and the second substrate base 22; a first transparent electrode 25 disposed between the electrochromic material layer 24 and the pixel structure 23 and having the same shape as the opening region of the pixel structure (fig. 2 illustrates the first transparent electrode between the first substrate and the electrochromic material layer, but not limited to the structure of fig. 2); a second transparent electrode 26 disposed on the electrochromic material layer 24 and the second substrate 22, wherein at least a partial orthographic projection of the second transparent electrode 26 on the first substrate 21 or the second substrate 22 overlaps with an orthographic projection of the first transparent electrode on the first substrate 21 or the second substrate 22;
the first transparent electrode and the second transparent electrode are used for enabling the electrochromic material arranged between the first transparent electrode and the second transparent electrode to have a light transmission effect under the preset voltage difference.
It should be noted that the electrochromic material layer provided in the embodiment of the present invention has a light transmitting function when a preset voltage difference exists between the first transparent electrode and the second transparent electrode, and the electrochromic material layer has a light shielding function at a position where the first transparent electrode is not located above the electrochromic material layer. Therefore, the light shielding structure in the embodiment of the invention adopts the electrochromic material layer for shielding. The first transparent electrode and the second transparent electrode may be made of a transparent conductive material such as Indium Tin Oxide (ITO), and are not limited in this respect. The structure of the second transparent electrode may be the same as that of the first transparent electrode, or the structure of the second transparent electrode is arranged in a whole layer, as long as it is ensured that the orthographic projection of the second transparent electrode on the first substrate or the second substrate is at least equal to the projection of the first transparent electrode on the first substrate or the second substrate, and the structure of the second transparent electrode is not specifically limited herein.
Generally, the material of the electrochromic material layer is liquid, and therefore the display panel provided by the embodiment of the invention comprises the first substrate base plate and the second substrate base plate, and the electrochromic material layer can be conveniently formed between the two substrate base plates. The first substrate in the embodiment of the present invention may be a substrate of an array substrate.
Further, to more clearly describe the beneficial effects of the display panel provided by the embodiment of the present invention, taking the curved display panel shown in fig. 3 as an example, the display panel shown in fig. 2 is curved, so as to obtain the display panel structure shown in fig. 3. Referring to fig. 3, when the display panel is in a curved shape, since the first transparent electrode 25 and the pixel structure 23 are both located at one side of the first substrate, or the first transparent electrode and the pixel structure are respectively positioned at two sides of the first substrate, so that the stress received by the first transparent electrode and the stress received by the pixel structure are the same in size and direction, the dislocation of the opening region of the pixel structure and the first transparent electrode is avoided, the first transparent electrode, the second transparent electrode and the electrochromic material layer are simultaneously bent along with the bending of the pixel structure, since the light-transmitting area and the light-shielding area in the electrochromic material layer are affected by the position of the first transparent electrode, and the first transparent electrode is the same as the opening area of the pixel structure, the light-shielding structure composed of the first transparent electrode does not affect the aperture ratio of the pixel structure, so that the electrochromic material layer which is not positioned between the first transparent electrode and the second transparent electrode has a light-shielding effect.
An embodiment of the present invention provides a display panel including: a first substrate base plate and a second substrate base plate; the pixel structures are arranged on one side of the first substrate base plate, which is far away from the second substrate base plate, and are arranged in an array manner; the electrochromic material layer is arranged between the first substrate base plate and the second substrate base plate; the first transparent electrode is arranged between the electrochromic material layer and the pixel structure and has the same shape as the opening area of the pixel structure; the second transparent electrode is arranged between the electrochromic material layer and the second substrate, and at least part of orthographic projection of the second transparent electrode on the first substrate or the second substrate is overlapped with the orthographic projection of the first transparent electrode on the first substrate or the second substrate; the first transparent electrode and the second transparent electrode are used for enabling the electrochromic material arranged between the first transparent electrode and the second transparent electrode to have a light transmitting effect under a preset voltage difference, and the electrochromic material in other areas has a light shading effect. Specifically, in the display panel provided in the embodiment of the present invention, the first transparent electrode having the same opening area as the pixel structure is disposed below the pixel structure, the second transparent electrode is disposed below the first transparent electrode, and the electrochromic material layer is disposed between the first transparent electrode and the second transparent electrode, so that the electrochromic material layer between the first transparent electrode and the second transparent electrode has a light transmitting function when a voltage difference between the first transparent electrode and the second transparent electrode reaches a preset voltage difference. Because the first transparent electrode is the same as the opening region of the pixel structure, the electrochromic material layer positioned in the orthographic projection of the opening region has a light transmitting effect, and the electrochromic material layer not positioned in the orthographic projection of the opening region has a light shielding effect. Therefore, the shading structure provided by the embodiment of the invention is composed of the electrochromic material layer, the first transparent electrode and the second transparent electrode, when the display panel is bent, the pixel structure and the first transparent electrode are respectively positioned at two sides of the first substrate, so that the stress direction and the stress magnitude are consistent, and the phenomenon of dislocation between the first transparent electrode and the pixel structure can not be generated, thereby avoiding the phenomena of light leakage, color mixing and aperture ratio reduction caused by the dislocation between the shading structure and the pixel structure when the display panel is bent, and improving the display effect.
In a specific embodiment, in the display panel provided by the embodiment of the present invention, referring to fig. 4, the pixel structure 23 includes a pixel electrode 231, and the first transparent electrode 25 is located between the pixel electrode 231 and the first substrate 21. The display panel 2 further includes: and an insulating layer 27 disposed between the pixel electrode 231 and the first transparent electrode 25. In order to avoid the conduction between the pixel electrode and the first transparent electrode to affect the normal display of the display panel, an insulating layer is required to be arranged between the pixel electrode and the first transparent electrode to insulate the pixel electrode from the first transparent electrode.
Specifically, the pixel structure on the first substrate includes a thin film transistor structure, a pixel electrode, a common electrode, and the like, wherein the thin film transistor structure includes a gate electrode, a gate insulating layer, an active layer, and a source drain electrode on the first substrate, and the pixel electrode is electrically connected to the drain electrode of the thin film transistor. The thin film transistor comprises a bottom gate structure and a top gate structure.
The position of the film layer where the first transparent electrode is located is described below by taking a thin film transistor of a bottom gate structure as an example. For example, referring to fig. 5, the pixel structure 23 includes a gate electrode 232, a gate insulating layer 233, an active layer 234, a source electrode 235, a drain electrode 236, and a pixel electrode 231 electrically connected to the drain electrode 236 on the first substrate 21. The first transparent electrode 25 is located above the first substrate 21 and below the gate electrode 232. Wherein, the pattern of the first transparent conducting layer is formed after the pattern of the grid electrode is formed, or the pattern of the first transparent conducting layer is formed before the pattern of the grid electrode is formed. Alternatively, the first transparent electrode is located above the gate insulating layer and below the pixel electrode, but in order to avoid the conductive effect between the pixel electrode and the first transparent electrode, an insulating layer needs to be disposed between the pixel electrode and the transparent electrode, thereby increasing the manufacturing process. Therefore, the first transparent electrode is preferably disposed under the gate insulating layer, thereby saving a fabrication process. Of course, the film layer on which the first transparent electrode is disposed in the embodiment of the invention is not limited to the structure shown in fig. 5.
For the top gate-shaped tft, referring to fig. 6, the pixel structure 23 includes an active layer 234, a gate insulating layer 233, a gate 232, a dielectric layer 237, a source electrode 235, a drain electrode 236, and a pixel electrode 231 electrically connected to the drain electrode 236, where the first transparent electrode 25 is located above the first substrate 21 and below the gate insulating layer 233, and the pattern of the first transparent electrode is the same as the pattern of the pixel electrode. The first transparent electrode may be located between any two film layers between the pixel electrode and the active layer, and is not particularly limited herein.
In a specific embodiment, an embodiment of the present invention provides the above-mentioned display panel, and referring to fig. 7, the first transparent electrode 25 is located between the first substrate base 21 and the electrochromic material layer 24.
Specifically, the first transparent electrode may be located above or below the first substrate, when the first transparent electrode is located below the first substrate, the pixel electrode and the first transparent electrode are respectively located at two sides of the first substrate, and when the first substrate is bent, the pixel electrode and the first transparent electrode are not moved due to stress applied thereto, so that a misalignment between the first transparent electrode and the pixel electrode is avoided, and light leakage, color mixing, and a decrease in aperture ratio of the display panel are avoided.
In a specific embodiment, an embodiment of the present invention provides the above-mentioned display panel, where, referring to fig. 8, an orthographic projection of the second transparent electrode 26 on the first substrate 21 overlaps with an orthographic projection of the electrochromic material layer 24 on the first substrate 21.
Specifically, when the second transparent conductive layer is formed on the second substrate, the second transparent conductive layer may be formed in an entire layer structure, or a second transparent electrode having the same structure as the first transparent electrode may be formed using the same mask. The second transparent electrode is formed into the structure shown in fig. 8, so that the manufacturing process is simplified, and the dislocation of the light-transmitting area and the light-shielding area of the electrochromic material layer caused by the dislocation of the second transparent electrode is avoided. Of course, the second transparent electrode is not limited to the structure shown in fig. 8, and the second transparent conductive layer further includes a stripe electrode structure corresponding to each row of pixel electrodes or each column of pixel electrodes. Specifically, the structure of the second transparent electrode is not particularly limited herein.
Based on the same inventive concept, an embodiment of the present invention further provides a method for manufacturing a display panel, which is provided in an embodiment of the present invention, and with reference to fig. 9, the method includes:
s901, forming a pattern of pixel structures which are arranged in an array on one side of a first substrate far away from a second substrate;
the pixel structure comprises a thin film transistor structure, a common electrode layer, a pixel electrode and the like, wherein the thin film transistor structure is positioned on the first substrate base plate, and the pixel electrode is electrically connected with the thin film transistor. The manufacturing method of the pixel structure is the same as that of the prior art, and is not described herein.
S902, forming an electrochromic material layer between a first substrate and a second substrate;
the step S901 and the step S902 are not in sequence, a pattern of a pixel structure may be formed above the first substrate, and then an electrochromic material layer may be formed between the first substrate and the second substrate; alternatively, the electrochromic material layer is formed between the first substrate and the second substrate, and then the pattern of the pixel structure is formed on the other side of the first substrate, which is not limited in this embodiment.
S903, forming a first transparent electrode pattern which is the same as the opening area shape of the pixel structure between the electrochromic material layer and the pixel structure;
the pattern of the first transparent electrode may be formed between the pixel structure and the first substrate, or between the first substrate and the electrochromic material layer, so that the steps of forming the pattern of the first transparent electrode are different according to different structures.
When the first transparent electrode is located between the first substrate base plate and the electrochromic material layer, step S903 may be located between step S901 and step S903, or performed in the order of step S903, step S901, and step S902; when the first transparent electrode is located between the pixel structure and the first substrate, step S903 may be located before step S901. The order in which the steps are specifically performed is not specifically limited herein.
S904, forming a pattern of a second transparent electrode between the electrochromic material layer and the second substrate, wherein at least part of orthographic projection of the second transparent electrode on the first substrate or the second substrate is overlapped with the orthographic projection of the first transparent electrode on the first substrate or the second substrate;
the first transparent electrode and the second transparent electrode are used for enabling the electrochromic material arranged between the first transparent electrode and the second transparent electrode to have a light transmission effect under the preset voltage difference.
It should be noted that the execution sequence of step S901, step S902, step S903, and step S904 is not limited in the embodiment of the present invention, and may be sequentially formed in different sequences according to different structures of the display panel. And is not particularly limited herein.
The patterning process used for forming each pattern in the above steps may include a photolithography process, or may include a photolithography process and an etching step, and may also include other processes for forming a predetermined pattern, such as printing, inkjet printing, etc.; the photolithography process is a process of forming a pattern using a photoresist, a mask plate, an exposure machine, and the like, including processes of film formation, exposure, development, and the like. In particular implementations, the corresponding patterning process may be selected based on the structure formed in the present invention.
Based on the same inventive concept, an embodiment of the present invention further provides a curved display panel, and referring to fig. 10, the curved display panel includes any one of the display panels 2 provided in the embodiments of the present invention, a cross section of the display panel 2 along the extension direction of the long axis is an arc-shaped cross section, and a bending direction of the arc-shaped cross section is far away from the second substrate 22.
The curved display panel provided by the embodiment of the invention is manufactured by the display panel in the embodiment, and the display panel is bent according to the display panel provided by the embodiment to form the curved display panel in the bending direction shown in fig. 10. Because the pixel structure and the first transparent electrode are positioned on one side of the first substrate base plate or positioned on two sides of the first substrate base plate in the curved surface display panel, the direction and the size of stress received are the same in the process of bending the first substrate base plate, the pixel structure and the first transparent electrode cannot be dislocated, and further the light shading structure consisting of the first transparent electrode, the electrochromic material layer and the second transparent electrode cannot be dislocated, the phenomena of light leakage, color mixing and aperture opening ratio reduction in the curved surface display panel are avoided, and the display effect of the curved surface display panel is improved.
In an embodiment, in the curved display panel provided in the embodiment of the present invention, referring to fig. 10, the curved display panel further includes: an opposite substrate 1 disposed on a side of the first substrate 21 away from the second substrate 22, and a liquid crystal layer 3 disposed between the first substrate and the opposite substrate; here, the bending direction of the counter substrate 1 is the same as the bending direction of the first substrate 21. The first substrate may be a substrate in the array substrate, and the bending direction of the opposite substrate is the same as the bending direction of the array substrate.
In an embodiment, in the curved display panel provided in the embodiment of the present invention, referring to fig. 11, the curved display panel further includes: and a curved backlight 4 disposed on the second substrate 22 on the side away from the second transparent electrode 26, wherein the curved backlight 4 is bent in the same direction as the first substrate 21.
Based on the same invention idea, the embodiment of the invention further provides a curved surface display device, which comprises any one of the curved surface display panels provided by the embodiment of the invention. The curved surface display device can be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. The implementation of the curved display device can be referred to the above embodiments of the curved display panel, and repeated descriptions are omitted.
To sum up, an embodiment of the present invention provides a display panel including: a first substrate base plate and a second substrate base plate; the pixel structures are arranged on one side of the first substrate base plate, which is far away from the second substrate base plate, and are arranged in an array manner; the electrochromic material layer is arranged between the first substrate base plate and the second substrate base plate; the first transparent electrode is arranged between the electrochromic material layer and the pixel structure and has the same shape as the opening area of the pixel structure; a second transparent electrode disposed between the electrochromic material and a second substrate, at least a partial orthographic projection of the second transparent electrode on the first substrate or the second substrate overlapping an orthographic projection of the first transparent electrode on the first substrate or the second substrate; the first transparent electrode and the second transparent electrode are used for being under a preset voltage difference. Specifically, in the display panel provided in the embodiment of the present invention, the first transparent electrode which is the same as the opening region of the pixel structure is disposed below the pixel structure, the second transparent electrode is disposed below the first transparent electrode, and the electrochromic material layer is disposed between the first transparent electrode and the second transparent electrode, so that when the voltage difference between the first transparent electrode and the second transparent electrode reaches the preset voltage difference, the electrochromic material layer between the first transparent electrode and the second transparent electrode has a light transmitting function, and the electrochromic material in other regions has a light shielding function. Because the first transparent electrode is the same as the opening region of the pixel structure, the electrochromic material layer positioned in the orthographic projection of the opening region has a light transmitting effect, and the electrochromic material layer not positioned in the orthographic projection of the opening region has a light shielding effect. Therefore, the shading structure provided by the embodiment of the invention is composed of the electrochromic material layer, the first transparent electrode and the second transparent electrode, when the display panel is bent, the pixel structure and the first transparent electrode are respectively positioned at two sides of the first substrate, so that the stress direction and the stress magnitude are consistent, and the phenomenon of dislocation between the first transparent electrode and the pixel structure can not be generated, thereby avoiding the phenomena of light leakage, color mixing and aperture ratio reduction caused by the dislocation between the shading structure and the pixel structure when the display panel is bent, and improving the display effect.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A display panel, comprising:
a first substrate base plate and a second substrate base plate;
the pixel structures are arranged on one side of the first substrate base plate, which is far away from the second substrate base plate, and are arranged in an array manner;
an electrochromic material layer disposed between the first substrate base and the second substrate base;
the first transparent electrode is arranged between the electrochromic material layer and the pixel structure and has the same shape as the opening area of the pixel structure;
a second transparent electrode disposed between the electrochromic material layer and the second substrate, at least a partial orthographic projection of the second transparent electrode on the first substrate or the second substrate overlapping with an orthographic projection of the first transparent electrode on the first substrate or the second substrate;
the first transparent electrode and the second transparent electrode are used for enabling the electrochromic material arranged between the first transparent electrode and the second transparent electrode to have a light transmission effect under the condition of a preset voltage difference.
2. The display panel of claim 1, wherein the pixel structure comprises a pixel electrode, and wherein the first transparent electrode is positioned between the pixel electrode and the first substrate.
3. The display panel according to claim 2, characterized in that the display panel further comprises: and the insulating layer is arranged between the pixel electrode and the first transparent electrode.
4. The display panel of claim 1, wherein the first transparent electrode is positioned between the first substrate and the layer of electrochromic material.
5. The display panel according to claim 1, wherein an orthographic projection of the second transparent electrode on the first substrate base plate or the second substrate base plate overlaps with an orthographic projection of the electrochromic material layer on the first substrate base plate or the second substrate base plate.
6. A curved display panel comprising the display panel according to any one of claims 1 to 5, wherein a cross section of the display panel along a direction in which a long axis extends is an arc-shaped cross section, and a bending direction of the arc-shaped cross section is away from the second substrate.
7. The curved display panel of claim 6, further comprising:
the liquid crystal display panel comprises a first substrate base plate, a second substrate base plate and a liquid crystal layer, wherein the first substrate base plate is arranged on the first substrate base plate; wherein,
the opposite substrate is bent in the same direction as the first substrate.
8. The curved display panel of claim 7, further comprising:
and the curved backlight source is arranged on one side of the second substrate base plate, which is far away from the second transparent electrode, and the bending direction of the curved backlight source is the same as that of the first substrate base plate.
9. A curved display device comprising the curved display panel of any one of claims 6 to 8.
10. A method of manufacturing a display panel according to any one of claims 1 to 5, the method comprising:
forming a pattern of pixel structures which are arranged in an array manner on one side of the first substrate far away from the second substrate;
forming an electrochromic material layer between the first substrate base plate and the second substrate base plate;
forming a pattern of a first transparent electrode having the same shape as the opening region of the pixel structure between the electrochromic material layer and the pixel structure;
forming a pattern of a second transparent electrode between the electrochromic material layer and the second substrate, wherein at least a partial orthographic projection of the second transparent electrode on the first substrate or the second substrate is overlapped with an orthographic projection of the first transparent electrode on the first substrate or the second substrate;
the first transparent electrode and the second transparent electrode are used for enabling the electrochromic material arranged between the first transparent electrode and the second transparent electrode to have a light transmission effect under the condition of a preset voltage difference.
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