CN113156682A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113156682A CN113156682A CN202110422767.3A CN202110422767A CN113156682A CN 113156682 A CN113156682 A CN 113156682A CN 202110422767 A CN202110422767 A CN 202110422767A CN 113156682 A CN113156682 A CN 113156682A
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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
- G02F1/1343—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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
Abstract
The embodiment of the invention provides a display panel and a display device, wherein the display panel is provided with a plurality of pixel units distributed in an array, and the pixel units comprise: the liquid crystal display device comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are arranged at intervals oppositely; the first substrate is provided with a first electrode and a second electrode at one side close to the liquid crystal layer, and the second substrate is provided with a third electrode and a fourth electrode at one side close to the liquid crystal layer; a first orthographic projection of the first electrode on the first substrate and a third orthographic projection of the third electrode on the first substrate are overlapped; a second orthographic projection of the second electrode on the first substrate and a fourth orthographic projection of the fourth electrode on the first substrate are overlapped; and the sum of the areas of the first orthographic projection and the second orthographic projection is smaller than the area of the orthographic projection of the liquid crystal layer on the first substrate. In the embodiment of the application, the display panel not only can realize double-sided transparent display, but also can display different contents on double sides.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
With the development of display technology, the functions of display devices are more and more abundant, and the applications of display devices are more and more extensive. For example, the transparent display device has been gradually applied to application scenes such as an in-vehicle display, a window display, a furniture display, and a wearing display.
In the existing transparent display device, in the display process, only single-sided display is usually realized, or even if the front-side and back-side display is realized, the same picture and color can be displayed on both sides, and the function is single.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are proposed to provide a display panel and a display device that overcome or at least partially solve the above problems.
In a first aspect, an embodiment of the present invention discloses a display panel, where the display panel has a plurality of pixel units distributed in an array, and the pixel units include: the liquid crystal display device comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are arranged at intervals oppositely;
the first substrate is provided with a first electrode and a second electrode at one side close to the liquid crystal layer, and the second substrate is provided with a third electrode and a fourth electrode at one side close to the liquid crystal layer; a first orthographic projection of the first electrode on the first substrate and a third orthographic projection of the third electrode on the first substrate are overlapped, so that incident light rays are projected from the direction of the first substrate; a second orthographic projection of the second electrode on the first substrate and a fourth orthographic projection of the fourth electrode on the first substrate are overlapped, so that incident light rays are projected from the direction of the second substrate;
wherein a sum of areas of the first orthographic projection and the second orthographic projection is smaller than an area of an orthographic projection of the liquid crystal layer on the first substrate.
Optionally, the first substrate further includes a first shielding layer, and the second substrate further includes a second shielding layer; wherein the content of the first and second substances,
the first shielding layer is arranged on one side, far away from the liquid crystal layer, of the second electrode, and the second orthographic projection falls into a fifth orthographic projection of the first shielding layer on the first substrate;
the second shielding layer is arranged on one side, far away from the liquid crystal layer, of the third electrode, and the third orthographic projection falls into the sixth orthographic projection of the second shielding layer on the first substrate.
Optionally, there is a gap between the edge of the second orthographic projection and the edge of the fifth orthographic projection, and there is a gap between the edge of the third orthographic projection and the edge of the sixth projection.
Optionally, the fifth orthographic projection and the sixth orthographic projection are both rectangular, and a long side direction of the rectangle is parallel to the direction of the incident light.
Optionally, the first electrode comprises a plurality of first sub-electrodes, the second electrode comprises a plurality of second sub-electrodes, the third electrode comprises a plurality of third sub-electrodes, and the fourth electrode comprises a plurality of fourth sub-electrodes; a first sub orthographic projection of the first sub electrode on the first substrate and a third sub orthographic projection of the third sub electrode on the first substrate are overlapped, and a second sub orthographic projection of the second sub electrode on the first substrate and a fourth sub orthographic projection of the fourth sub electrode on the first substrate are overlapped;
the first shielding layer comprises a plurality of correspondingly arranged first sub shielding layers, and the second shielding layer comprises a plurality of correspondingly arranged second sub shielding layers; the second sub-orthographic projection falls into a fifth sub-orthographic projection of the first sub-shielding layer on the first substrate; the third sub-orthographic projection falls within a sixth sub-orthographic projection of the second sub-shielding layer on the first substrate.
Optionally, the fifth sub-orthographic projection and the sixth sub-orthographic projection are alternately arranged in a straight line.
Optionally, one of the fifth sub-orthographic projection and one of the sixth sub-orthographic projection form an electrode block, and the electrode block array is distributed in the orthographic projection of the liquid crystal layer on the first substrate.
Optionally, the first substrate further includes a first base plate, a gate layer, a passivation layer, and a first planarization layer, which are sequentially disposed, and the second substrate further includes a second base plate and a second planarization layer; wherein the first flat layer is adjacent to the liquid crystal layer and the second flat layer is adjacent to the liquid crystal layer.
Optionally, the material of the liquid crystal layer is polymer stabilized liquid crystal.
Optionally, the area of the first orthographic projection is 10-20% of the area of the orthographic projection of the liquid crystal layer on the first substrate, and the area of the second orthographic projection is 10-20% of the area of the orthographic projection of the liquid crystal layer on the first substrate.
In a second aspect, an embodiment of the present invention further provides a display device, including: the display panel of any of the above.
Optionally, the display device further comprises: a light source for providing incident light, the light source being located at a side of the display panel.
The embodiment of the invention has the following advantages:
in the embodiment of the present application, the pixel unit includes: the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged at intervals, the liquid crystal layer is arranged between the first substrate and the second substrate, a first electrode and a second electrode are arranged on one side, close to the liquid crystal layer, of the first substrate, and a third electrode and a fourth electrode are arranged on one side, close to the liquid crystal layer, of the second substrate. The first electrode and the third electrode can project incident light rays from the direction of the first substrate to control the display content on the side of the first substrate, and the second electrode and the fourth electrode can project incident light rays from the direction of the second substrate to control the display content on the side of the second substrate, so that different contents are displayed on two sides of the display panel. Moreover, since the sum of the areas of the first orthographic projection and the second orthographic projection is smaller than the orthographic projection area of the liquid crystal layer on the first substrate, a region of the liquid crystal layer other than the first electrode and the second electrode can form a transparent region, and transparent display is realized. That is, the display panel described in the present application not only can realize double-sided transparent display, but also can display different contents on the double sides of the display panel.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a first substrate side of a display panel according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a pixel unit according to an embodiment of the present disclosure;
FIG. 4 is a diagram illustrating a display effect of a display panel according to an embodiment of the present application;
FIG. 5 is a schematic view of a light path in a display panel according to an embodiment of the present disclosure;
FIG. 6 is a second schematic view illustrating light paths in a display panel according to an embodiment of the present invention;
FIG. 7 is a second schematic diagram of a two-sided structure of a pixel unit according to an embodiment of the present disclosure;
FIG. 8 is a third schematic diagram illustrating a two-sided structure of a pixel unit according to an embodiment of the present disclosure;
FIG. 9 is a fourth schematic diagram illustrating a two-sided structure of a pixel unit according to an embodiment of the present disclosure;
description of reference numerals: 10-first substrate, 101-first electrode, 102-second electrode, 103-third electrode, 104-fourth electrode, 105-first substrate, 106-gate layer, 107-passivation layer, 108-first planar layer, 109-first alignment layer, 11-second substrate, 111-first shielding layer, 112-second shielding layer, 113-second substrate, 114-second planar layer, 115-second alignment layer, 116-support pillar, 12-liquid crystal layer, a 1-first display region, 11-first sub-display region, a 2-second display region, a 22-second sub-display region, B1-first shielding region, B11-first sub-shielding region, B2-second shielding region, B22-second sub-shielding region, C-transparent region, S1-light exit path, s2-light-blocking path, S3-total reflection path.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The embodiment of the invention provides a display, which may include, but is not limited to, any one of a map display and a liquid crystal display, and the embodiment of the invention is only described by taking the display as the liquid crystal display, and other types of displays are executed by reference.
Referring to fig. 1, a structural diagram of a display panel according to an embodiment of the present application is shown, referring to fig. 2, a structural diagram of a double-side structure of a display panel according to an embodiment of the present application is shown, and referring to fig. 3, one of the structural diagrams of a double-side structure of a pixel unit according to an embodiment of the present application is shown.
Specifically, the display panel has a plurality of pixel units distributed in an array, and the pixel units may include: a first substrate 10 and a second substrate 11 disposed at an opposite interval, and a liquid crystal layer 12 disposed between the first substrate 10 and the second substrate 11; the first substrate 10 is provided with a first electrode 101 and a second electrode 102 on a side close to the liquid crystal layer 12, and the second substrate is provided with a third electrode 103 and a fourth electrode 104 on a side close to the liquid crystal layer 12; a first orthographic projection of the first electrode 101 on the first substrate 10 and a third orthographic projection of the third electrode 103 on the first substrate 10 are overlapped, so that incident light rays are projected from the direction of the first substrate 10; a second orthographic projection of the second electrode 102 on the first substrate 10 and a fourth orthographic projection of the fourth electrode 104 on the first substrate 10 are overlapped, so that incident light rays are projected from the direction of the second substrate 11; wherein the sum of the areas of the first orthographic projection and the second orthographic projection is smaller than the area of the orthographic projection of the liquid crystal layer 12 on the first substrate 10.
In the embodiment of the present application, since the pixel unit may include the first substrate 10 and the second substrate 11 disposed at an interval, and the liquid crystal layer 12 disposed between the first substrate 10 and the second substrate 11, the first substrate 10 is provided with the first electrode 101 and the second electrode 102 on a side close to the liquid crystal layer 12, and the second substrate 11 is provided with the third electrode 103 and the fourth electrode 104 on a side close to the liquid crystal layer 12. The first electrode 101 and the third electrode 103 can project incident light from the direction of the first substrate 10 to control the display content on the side of the first substrate 10, and the second electrode 102 and the fourth electrode 104 can project incident light from the direction of the second substrate 11 to control the display content on the side of the second substrate 11, so that different contents are displayed on both sides of the display panel. Moreover, since the sum of the areas of the first orthographic projection and the second orthographic projection is smaller than the orthographic projection area of the liquid crystal layer 12 on the first substrate 10, the region of the liquid crystal layer 12 other than the first electrode 101 and the second electrode 102 may form a transparent region, and transparent display is realized. That is, the display panel described in the present application not only can realize double-sided transparent display, but also can display different contents on the double sides of the display panel.
Specifically, the first electrode 101 and the third electrode 103 may be symmetrically disposed on both sides of the liquid crystal layer 12, and display on the first substrate 10 side may be controlled by applying a voltage between the first electrode 101 and the third electrode 103. Since there is an overlapping area between the first orthographic projection of the first electrode 101 on the first substrate 10 and the third orthographic projection of the third electrode 103 on the first substrate 10, the overlapping area between the first orthographic projection and the third orthographic projection may form the first display area a1 on the first substrate 10 side.
Similarly, the second electrode 102 and the fourth electrode 104 may be symmetrically disposed on both sides of the liquid crystal layer 12, and by applying a voltage between the second electrode 102 and the fourth electrode 104, display on the second substrate 11 side may be controlled. Since there is an overlapping area between the second orthographic projection of the second electrode 102 on the first substrate 10 and the fourth orthographic projection of the fourth electrode 104 on the first substrate 10, as shown in fig. 3, the overlapping area between the second orthographic projection and the fourth orthographic projection may form the second display area a2 on the second substrate 11 side.
In the embodiment of the present application, by applying a voltage between the first electrode 101 and the third electrode 103, and between the second electrode 102 and the fourth electrode 104, the first display region a1 on the first substrate 10 side and the second display region a2 on the second substrate 11 side can be made to display different contents, exhibiting the display effect as shown in fig. 4.
As shown in fig. 4, the display panel displays "ABC" on the first substrate 10 side and "123" on the second substrate 11 side, and different contents can be displayed on both sides of the display panel.
In the embodiment of the present application, since the sum of the areas of the first orthographic projection and the second orthographic projection is smaller than the orthographic projection area of the liquid crystal layer 12 on the first substrate 10, the transparent region C may be formed in the region of the liquid crystal layer 12 other than the first electrode 101 and the second electrode 102, so as to implement transparent display. The application the display panel, not only can two-sidedly show different contents, can also realize two-sidedly transparent demonstration to provide abundant display effect.
For example, as shown in fig. 4, the display panel may form transparent regions in regions other than the display contents "ABC" and "123" in addition to displaying different contents on the first substrate 10 side and the second substrate 11 side.
In practical applications, when the display panel needs to display, a voltage may be applied between the first electrode 101 and the third electrode 103 on both sides of the liquid crystal layer 12, and a voltage may be applied between the second electrode 102 and the fourth electrode 104, so that liquid crystals in the liquid crystal layer 12 are deflected and light is scattered, thereby realizing a display function. Moreover, during the display process, the transparent region C can also realize a transparent effect, so that a user can see the scene behind the display panel through the display panel. When the display panel does not need to display, the display panel can realize a transparent state without applying a voltage between the first electrode 101 and the third electrode 103 and a voltage between the second electrode 102 and the fourth electrode 104.
In an alternative embodiment of the present application, the material of the liquid crystal layer 12 may be Polymer Stabilized Liquid Crystal (PSLC). Because the PSLC has the advantages of high transparency, fast response speed, color display, and the like, when the liquid crystal layer 12 is made of PSLC, the liquid crystal layer 12 can perform a light guiding function while performing display, and the transparency is high.
In practical applications, the liquid crystal layer 12 may include a box and a liquid crystal composition disposed in the box, and under the condition that voltages are applied between the first electrode 101 and the third electrode 103, and between the second electrode 102 and the fourth electrode 104, the liquid crystal may deflect and scatter light in the box, so as to realize a display function.
In an alternative embodiment of the present application, the area of the first orthographic projection is 10 to 20% of the area of the orthographic projection of the liquid crystal layer 12 on the first substrate 10, that is, in fig. 3, the area of the first display area a1 on the first substrate 10 side is 10 to 20% of the area of the pixel unit, so that the first substrate 10 side can realize reliable display. The area of the second orthographic projection is 10-20% of the area of the orthographic projection of the liquid crystal layer 12 on the first substrate 10, that is, in fig. 3, the area of the second display area a2 on the second substrate 11 side is 10-20% of the area of the pixel unit, so that reliable display can be achieved on the second substrate 11 side. In practical applications, the regions of the pixel unit outside the first display region a1 and the second display region a2 may be a non-display transparent region C and a metal wiring region. The area of the transparent area C can be 60-80% of the pixel unit, so that the display panel has a transmittance of more than 60%, and a good transparent display effect is achieved.
Optionally, the first substrate 10 may further include a first shielding layer 111, and the second substrate 11 may further include a second shielding layer 112; the first shielding layer 111 is disposed on a side of the second electrode 102 away from the liquid crystal layer 12, and the second orthographic projection falls within the fifth orthographic projection of the first shielding layer 111 on the first substrate 10. The first shielding layer 111 may form a first shielding region B1 on the first substrate 10 side to shield the second display region a2 on the second substrate 11 side from display contents on the second substrate 11 side interfering with display on the first substrate 10 side.
Similarly, the second shielding layer 112 is disposed on a side of the third electrode 102 away from the liquid crystal layer 12, and the third orthographic projection falls within the sixth orthographic projection of the second shielding layer 112 on the first substrate 10. The second shielding layer 112 may form a second shielding region B2 on the second substrate 11 side to shield the first display region a1 on the first substrate 10 side from the display content on the first substrate 10 side interfering with the display on the second substrate 11 side. Therefore, double-sided display of the display panel is not interfered with each other, and double-sided display effect of the display panel is improved.
Specifically, by providing the first shielding layer 111 on the side of the second electrode 102 away from the liquid crystal layer 12, the first shielding region B1 on the first substrate 10 side can be made to oppose the second display region a2 on the second substrate 11 side to prevent the display content of the second display region a2 from interfering with the display on the first substrate 10 side. Similarly, by providing the second shielding layer 112 on the side of the third electrode 103 away from the liquid crystal layer 12, the second shielding region B2 on the second substrate 11 side can be made to oppose the first display region a1 on the first substrate 10 side, so as to prevent the display content of the first display region a1 from interfering with the display on the second substrate 11 side.
Fig. 5 is a schematic diagram showing a light path in a display panel according to an embodiment of the present disclosure, and fig. 6 is a schematic diagram showing a light path in a display panel according to an embodiment of the present disclosure. As shown in fig. 5, when the display panel needs to display, a voltage may be applied between the first electrode 101 and the third electrode 103 on both sides of the liquid crystal layer 12, and a voltage may be applied between the second electrode 102 and the fourth electrode 104, so that liquid crystals in the liquid crystal layer 12 are deflected, and light is scattered from the first electrode 101 and the fourth electrode 104, or the second electrode 102 and the third electrode 103, according to the light exit path S1, thereby realizing a display function. The first shielding layer 111 and the second shielding layer 112 can shield light from two sides of the display panel according to the light shielding path S2, so that the double-sided display of the display panel does not interfere with each other. As shown in fig. 6, since there is no electrode in the region except for the first electrode 101, the second electrode 102, the third electrode 103, and the fourth electrode 104, the incident light may be totally reflected according to the total reflection path S3 to form a transparent region C, thereby implementing transparent display.
Specifically, the falling of the second orthographic projection into the fifth orthographic projection may include: the second orthographic projection and the second orthographic projection are equal in size and are completely aligned, or the second orthographic projection is smaller than the fifth orthographic projection, and the second orthographic projection completely falls into the fifth orthographic projection, so that the first shielding area B1 can fully shield the second display area A2. Similarly, the falling of the third orthographic projection into the sixth orthographic projection may include: the third orthographic projection and the sixth orthographic projection are equal in size and completely aligned, or the third orthographic projection is smaller than the sixth orthographic projection, and the third orthographic projection completely falls within the sixth orthographic projection, so that the second shielding region B2 can sufficiently shield the first display region A1.
For example, the materials of the first and second shielding layers 111 and 112 may include, but are not limited to, an absorbing material such as a Black Matrix (BM) or a Brominated Polystyrene (BPS), or a reflective material such as a metal. In the embodiment of the present application, specific materials of the first shielding layer 111 and the second shielding layer 112 may not be limited.
In practical applications, when the first shielding layer 111 and the second shielding layer 112 are made of a light-reflecting material such as metal, the shielding function can be realized, and the display panel can also be used as an electrode of a display area, so that the direction of scattered light can be controlled while power is supplied.
Optionally, there is a gap between the edge of the second orthographic projection and the edge of the fifth orthographic projection, that is, the second orthographic projection is smaller than the fifth orthographic projection, and the second orthographic projection completely falls within the fifth orthographic projection, so that the first shielding region B1 can sufficiently shield the second display region a 2. The edge of the third orthographic projection is separated from the edge of the sixth projection, that is, the third orthographic projection is smaller than the sixth orthographic projection, and the third orthographic projection completely falls within the sixth orthographic projection, so that the second shielding region B2 can sufficiently shield the first display region a 1.
Alternatively, the gap may be equal to or greater than 3um, so that the first shielding region B1 may sufficiently shield the second display region a2, and so that the second shielding region B2 may sufficiently shield the first display region a 1.
Optionally, as shown in fig. 3, the fifth orthographic projection and the sixth orthographic projection are both rectangular, a long side direction of the rectangle is parallel to the direction of the incident light, that is, the first shielding region B1 and the second shielding region B2 are both rectangular, the display panel can enter light from the side, and the direction of the incident light (as indicated by arrows in the figure) is parallel to the direction of the rectangle, so that the first shielding region B1 and the second shielding region B2 have less influence on the light emitting efficiency of the display panel, and the light emitting efficiency of the display panel is improved.
Referring to fig. 7, a second schematic diagram of two-sided structures of a pixel unit according to the embodiment of the present disclosure is shown, where the fifth orthographic projection and the sixth orthographic projection are both rectangular, a long side direction of the rectangle is parallel to the direction of the incident light, that is, the first shielding region B1 and the second shielding region B2 are both rectangular, the display panel can enter light from a side, and the direction of the incident light (as indicated by an arrow in the figure) is parallel to the direction of the rectangle. In practical applications, the scheme shown in fig. 5 is adopted, and the luminous efficiency of the display panel is lower than that of the scheme shown in fig. 3.
Referring to fig. 8, showing a third schematic diagram of a double-sided structure of a pixel unit according to an embodiment of the present application, referring to fig. 9, showing a fourth schematic diagram of a double-sided structure of a pixel unit according to an embodiment of the present application, as shown in fig. 8 and 9, the first electrode 101 may include a plurality of first sub-electrodes, the second electrode 102 may include a plurality of second sub-electrodes, the third electrode 103 may include a plurality of third sub-electrodes, and the fourth electrode 104 may include a plurality of fourth sub-electrodes; a first sub-orthographic projection of the first sub-electrode on the first substrate 10 and a third sub-orthographic projection of the third sub-electrode on the first substrate 10 have an overlapping region, and the overlapping region of the first sub-orthographic projection and the third sub-orthographic projection may form a first sub-display area a11 on the first substrate 10 side. A second sub-orthographic projection of the second sub-electrode on the first substrate 10 and a fourth sub-orthographic projection of the fourth sub-electrode on the first substrate 10 have an overlapping region, and the overlapping region of the second sub-orthographic projection and the fourth sub-orthographic projection may form a second sub-display area a22 on the second substrate 11 side.
Specifically, the first shielding layer 111 may include a plurality of correspondingly disposed first sub-shielding layers, and the second shielding layer 112 may include a plurality of correspondingly disposed second sub-shielding layers; the second sub-orthographic projection falls into a fifth sub-orthographic projection of the first sub-shielding layer on the first substrate so as to form a first sub-shielding region B11 on the side of the first substrate 10 and shield a corresponding second sub-display region A22; the third sub-orthographic projection falls within the sixth sub-orthographic projection of the second sub-second shielding layer on the first substrate to form a second sub-shielding region B22 on the second substrate 11 side to shield the corresponding first sub-display region a 11.
In the embodiment of the present application, by partitioning the first electrode 101, the second electrode 102, the third electrode 103, and the fourth electrode 104, and correspondingly partitioning the first shielding layer 111 and the second shielding layer 112, the design of designing the first shielding layer 111 and the second shielding layer 112 into a long-strip-shaped rectangle can be avoided, and further, the formation of a long-strip-shaped first shielding region B1 on the first substrate 10 side can be avoided, and the formation of a long-strip-shaped second shielding region B2 on the second substrate 11 side can be avoided, so that the display effect of the display panel is improved.
As shown in fig. 7, in an alternative embodiment of the present application, the fifth sub-orthographic projection and the sixth sub-orthographic projection are linearly and alternately arranged, so that the first sub-display area a11 and the first sub-shielding area B11 on the first substrate 10 side are linearly and alternately arranged, and the second sub-display area a22 and the second sub-shielding area B22 on the second substrate 11 side are linearly and alternately arranged, which can improve the display effect of the display panel and facilitate the power supply of the first sub-electrode, the second sub-electrode, the third sub-electrode, and the fourth sub-electrode.
As shown in fig. 8, in another alternative embodiment of the present application, one of the fifth sub-orthographic projection and one of the sixth sub-orthographic projection form an electrode block, and the electrode block array is distributed in the orthographic projection of the liquid crystal layer 12 on the first substrate 10, so that the first sub-shielding region B11 and the second sub-shielding region B22 corresponding to a single electrode block can be made smaller, and thus, the display effect of the display panel can be further improved.
After the first electrode 101, the second electrode 102, the third electrode 103, and the fourth electrode 104 are divided into blocks, the divided display regions can be formed. Correspondingly, the first shielding layer 111 and the second shielding layer 112 also need to be blocked correspondingly to form blocked shielding regions, and since the side length of each blocked shielding region needs to be longer than that of each blocked shielding region, the larger the number of divisions, the lower the aperture ratio of the pixel unit, and the lower the transmittance. In practical application, in order to realize a certain display transmittance, the arrangement rules and sizes of the specific display area and the shielding area need to be verified according to simulation and experimental results so as to balance the display effect and the display transmittance.
For example, if the pixel cell size is 1cm × 1cm and the one-side display area is required to account for 10%, the one-side display area size is 0.32cm × 0.32 cm. If one side of each pixel has n × n sub-pixels, the width (0.32/n) cm and the area (0.1024/n) of one sub-pixel are2)cm2(ii) a One shielding width (0.32/n +0.0003) cm, area (0.32/n +0.0003)2cm2(ii) a Pixel transmission area [1-2 x n (0.32/n +0.0003)2]cm2Transmittance [1-2 x n x (0.32/n +0.0003) ]2]80% simplified to 0.63616-0.0003072n-1.44 10-7 n. Therefore, under the above conditions, if the display transmittance is required to be higher than 60%, the number of single-sided division needs to be 110 or less. The specific number needs to be adjusted according to specific conditions, and the divided parallel light sources are arranged in the light incidence direction.
As shown in fig. 1, the first substrate 10 further includes a first base substrate 105, a gate layer 106, a passivation layer 107, and a first planarization layer 108, which may be sequentially disposed, and the second substrate 11 may further include a second base substrate 113 and a second planarization layer 114; the first planarization layer 108 is close to the liquid crystal layer 12, and the second planarization layer 114 is close to the liquid crystal layer 12.
For example, the first substrate 105 and the second substrate 113 may be transparent substrates, and the first substrate 105 and the second substrate 113 may be made of transparent glass or transparent plastic materials, and the specific material of the first substrate 105 and the second substrate 113 in the embodiment of the present disclosure may not be limited.
Specifically, the gate layer 106, the first electrode 101, the second electrode 102, the third electrode 103, and the fourth electrode 104 may be made of a metal material such as Cu, Al, Mo, Ti, Cr, or W, or an alloy of these materials. Similarly, the gate layer 106, the first electrode 101, the second electrode 102, the third electrode 103, and the fourth electrode 104 may be a single-layer structure, or may be a multi-layer structure, such as Mo \ Al \ Mo, Ti \ Cu \ Ti, MoTi \ Cu, and the like, which is not limited in the embodiment of the present invention.
Specifically, the passivation layer 107 may be formed on the gate electrode layer 106 by a deposition process using a metal or an alloy, and the passivation layer 107 may be used to block the anode reaction. The first and second planarization layers 108 and 114 can keep the surface of the pixel unit flat and flat.
Optionally, a first alignment layer 109 is further disposed between the first planarization layer 108 and the liquid crystal layer 102, a second alignment layer 115 is further disposed between the second planarization layer 114 and the liquid crystal layer 102, and the first alignment layer 109 and the second alignment layer 115 may be used to provide a pretilt angle for liquid crystal molecules in the liquid crystal layer 102.
Optionally, a supporting pillar 116 may be further disposed in the pixel unit, and the supporting pillar 116 may be disposed between the first alignment layer 109 and the second planarization layer 114 for supporting the liquid crystal layer 12 and the pixel unit, so that the structural stability of the display panel may be improved.
In the embodiment of the present invention, in the plurality of pixel units of the display panel, the first substrate 105, the gate layer 106, the passivation layer 107, the first planarization layer 108, the first alignment layer 109, the second substrate 113, the second planarization layer 11, and the second alignment layer 115 may be shared. In addition, in the drawings of the embodiments of the present application, only the case that the display panel includes 4 × 4 pixel units is shown, but in practical applications, the display panel may further include 8 × 8 pixel units, or 16 × 16 pixel units, and the like, and the number and the distribution form of the pixel units in the display panel may not be limited in the embodiments of the present application.
In summary, the display panel according to the embodiment of the present application may include at least the following advantages:
in the embodiment of the present application, the pixel unit includes: the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged at intervals, the liquid crystal layer is arranged between the first substrate and the second substrate, a first electrode and a second electrode are arranged on one side, close to the liquid crystal layer, of the first substrate, and a third electrode and a fourth electrode are arranged on one side, close to the liquid crystal layer, of the second substrate. The first electrode and the third electrode can project incident light rays from the direction of the first substrate to control the display content on the side of the first substrate, and the second electrode and the fourth electrode can project incident light rays from the direction of the second substrate to control the display content on the side of the second substrate, so that different contents are displayed on two sides of the display panel. Moreover, since the sum of the areas of the first orthographic projection and the second orthographic projection is smaller than the orthographic projection area of the liquid crystal layer on the first substrate, a region of the liquid crystal layer other than the first electrode and the second electrode can form a transparent region, and transparent display is realized. That is, the display panel described in the present application not only can realize double-sided transparent display, but also can display different contents on the double sides of the display panel.
An embodiment of the present application further provides a display device, where the display device specifically includes: the display panel according to any of the above embodiments, specifically, the structure of the display panel is the same as that of the display panel in each embodiment, and details are not repeated here.
Optionally, the display device may further include: the light source is used for providing incident light and is positioned at the side of the display panel so as to enter light from the side of the display panel.
In practical applications, the light source of the display device may also adopt a backlight mode, and the light incident mode of the display panel is not specifically limited in the embodiment of the present application.
In the embodiment of the present application, the pixel unit of the display panel includes: the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged at intervals, the liquid crystal layer is arranged between the first substrate and the second substrate, a first electrode and a second electrode are arranged on one side, close to the liquid crystal layer, of the first substrate, and a third electrode and a fourth electrode are arranged on one side, close to the liquid crystal layer, of the second substrate. The first electrode and the third electrode can project incident light rays from the direction of the first substrate to control the display content on the side of the first substrate, and the second electrode and the fourth electrode can project incident light rays from the direction of the second substrate to control the display content on the side of the second substrate, so that different contents are displayed on two sides of the display panel. Moreover, since the sum of the areas of the first orthographic projection and the second orthographic projection is smaller than the orthographic projection area of the liquid crystal layer on the first substrate, a region of the liquid crystal layer other than the first electrode and the second electrode can form a transparent region, and transparent display is realized. That is, the display device described in the present application not only can realize double-sided transparent display, but also can display different contents on the double sides of the display surface device.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The display, the processing method of the display and the display device provided by the invention are described in detail, a specific example is applied in the text to explain the principle and the implementation of the invention, and the description of the above example is only used to help understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (13)
1. A display panel having a plurality of pixel units distributed in an array, the pixel units comprising: the liquid crystal display device comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are arranged at intervals oppositely;
the first substrate is provided with a first electrode and a second electrode at one side close to the liquid crystal layer, and the second substrate is provided with a third electrode and a fourth electrode at one side close to the liquid crystal layer; a first orthographic projection of the first electrode on the first substrate and a third orthographic projection of the third electrode on the first substrate are overlapped, so that incident light rays are projected from the direction of the first substrate; a second orthographic projection of the second electrode on the first substrate and a fourth orthographic projection of the fourth electrode on the first substrate are overlapped, so that incident light rays are projected from the direction of the second substrate;
wherein a sum of areas of the first orthographic projection and the second orthographic projection is smaller than an area of an orthographic projection of the liquid crystal layer on the first substrate.
2. The display panel according to claim 1, wherein the first substrate further comprises a first shielding layer, and wherein the second substrate further comprises a second shielding layer; wherein the content of the first and second substances,
the first shielding layer is arranged on one side, far away from the liquid crystal layer, of the second electrode, and the second orthographic projection falls into a fifth orthographic projection of the first shielding layer on the first substrate;
the second shielding layer is arranged on one side, far away from the liquid crystal layer, of the third electrode, and the third orthographic projection falls into the sixth orthographic projection of the second shielding layer on the first substrate.
3. The display panel of claim 2, wherein the edge of the second orthographic projection is spaced from the edge of the fifth orthographic projection, and wherein the edge of the third orthographic projection is spaced from the edge of the sixth projection.
4. The display panel according to claim 2, wherein the fifth orthographic projection and the sixth orthographic projection are both rectangular, and a long side direction of the rectangle is parallel to the direction of the incident light.
5. The display panel according to claim 2, wherein the first electrode comprises a plurality of first sub-electrodes, the second electrode comprises a plurality of second sub-electrodes, the third electrode comprises a plurality of third sub-electrodes, and the fourth electrode comprises a plurality of fourth sub-electrodes; a first sub orthographic projection of the first sub electrode on the first substrate and a third sub orthographic projection of the third sub electrode on the first substrate are overlapped, and a second sub orthographic projection of the second sub electrode on the first substrate and a fourth sub orthographic projection of the fourth sub electrode on the first substrate are overlapped;
the first shielding layer comprises a plurality of correspondingly arranged first sub shielding layers, and the second shielding layer comprises a plurality of correspondingly arranged second sub shielding layers; the second sub-orthographic projection falls into a fifth sub-orthographic projection of the first sub-shielding layer on the first substrate; the third sub-orthographic projection falls within a sixth sub-orthographic projection of the second sub-shielding layer on the first substrate.
6. The display panel according to claim 5, wherein the fifth sub-orthographic projections and the sixth sub-orthographic projections are linearly arranged alternately.
7. The display panel of claim 5, wherein one of the fifth sub-orthographic projection and one of the sixth sub-orthographic projection form an electrode block, and the electrode block array is distributed on the orthographic projection of the liquid crystal layer on the first substrate.
8. The display panel according to claim 2, wherein, on the first substrate side, an overlapping region of the first orthographic projection and the third orthographic projection forms a first display region, the first shielding region forms a first shielding region, and a region outside the first shielding region and the second shielding region is a transparent region;
and on the side of the second substrate, a second display area is formed by the overlapped area of the second orthographic projection and the fourth orthographic projection, a second shielding area is formed by the second shielding layer, and the area outside the second display area and the second shielding area is a transparent area.
9. The display panel according to claim 1, wherein the first substrate further comprises a first base plate, a gate layer, a passivation layer, and a first planarization layer, which are sequentially provided, and wherein the second substrate further comprises a second base plate and a second planarization layer; wherein the first flat layer is adjacent to the liquid crystal layer and the second flat layer is adjacent to the liquid crystal layer.
10. The display panel according to claim 1, wherein a material of the liquid crystal layer is a polymer-stabilized liquid crystal.
11. The display panel according to any one of claims 1 to 10, wherein an area of the first orthographic projection is 10 to 20% of an area of an orthographic projection of the liquid crystal layer on the first substrate, and an area of the second orthographic projection is 10 to 20% of an area of an orthographic projection of the liquid crystal layer on the first substrate.
12. A display device, comprising: the display panel of any one of claims 1 to 11.
13. The display device according to claim 12, further comprising: a light source for providing incident light, the light source being located at a side of the display panel.
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| CN202110422767.3A CN113156682A (en) | 2021-04-16 | 2021-04-16 | Display panel and display device |
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| CN202110422767.3A CN113156682A (en) | 2021-04-16 | 2021-04-16 | Display panel and display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725233A (en) * | 2021-08-31 | 2021-11-30 | 京东方科技集团股份有限公司 | Transparent display panel, transparent display device and manufacturing method |
| CN115708011A (en) * | 2021-08-19 | 2023-02-21 | 北京京东方技术开发有限公司 | Display substrate, preparation method thereof and display device |
| WO2024020873A1 (en) * | 2022-07-27 | 2024-02-01 | 京东方科技集团股份有限公司 | Display panel and preparing method therefor, and display device |
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2021
- 2021-04-16 CN CN202110422767.3A patent/CN113156682A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115708011A (en) * | 2021-08-19 | 2023-02-21 | 北京京东方技术开发有限公司 | Display substrate, preparation method thereof and display device |
| WO2023020440A1 (en) * | 2021-08-19 | 2023-02-23 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method therefor, and display device |
| CN113725233A (en) * | 2021-08-31 | 2021-11-30 | 京东方科技集团股份有限公司 | Transparent display panel, transparent display device and manufacturing method |
| WO2024020873A1 (en) * | 2022-07-27 | 2024-02-01 | 京东方科技集团股份有限公司 | Display panel and preparing method therefor, and display device |
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