CN113156720B

CN113156720B - Display panel and display device

Info

Publication number: CN113156720B
Application number: CN202110420670.9A
Authority: CN
Inventors: 高娇; 邱英彰
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2022-09-13
Anticipated expiration: 2041-04-19
Also published as: CN113156720A

Abstract

The embodiment of the invention discloses a display panel and a display device. The display panel also comprises a display area, the display area comprises a plurality of pixel opening areas and a non-opening area positioned between two adjacent pixel opening areas, the non-opening area comprises a first non-opening area positioned between pixels with different light-emitting colors, and at least part of the first non-opening area comprises a color cast adjusting structure; the color shift adjusting structure covers the first non-opening area in a direction perpendicular to a direction in which the pixel opening area is directed to the first non-opening area. The problem of visual angle color cast is improved by arranging the color cast adjusting structure in part of the first non-opening area, and the display effect of the display panel is improved.

Description

Display panel and display device

Technical Field

Embodiments of the present invention relate to display panel technologies, and in particular, to a display panel and a display device.

Background

A Liquid Crystal Display (LCD) has many advantages such as a thin body, power saving, no radiation, and the like, and is widely used. Generally, a liquid crystal display device includes a housing, a liquid crystal panel disposed in the housing, and a backlight module disposed in the housing. The liquid crystal display panel is mainly composed of a thin film transistor array substrate, a color filter substrate and a liquid crystal layer arranged between the two substrates, and the working principle is that driving voltage is applied to the two glass substrates to control the rotation of liquid crystal molecules of the liquid crystal layer, and light rays of the backlight module are refracted out to generate pictures.

In order to meet the requirements of comfort and entertainment, the display screen has a trend of curved surface large screen. For a large-size LCD in a curved surface, the phenomena of extrusion light leakage and metal wiring light leakage caused by curved surface bending are obvious, and the phenomenon of color cast appears along with the change of a visual angle, so that the display effect is influenced.

Disclosure of Invention

The embodiment of the invention provides a display panel and a display device, which are used for improving the problem of color cast of a visual angle of the display panel.

In a first aspect, an embodiment of the present invention provides a display panel, including a first substrate, a second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, where the first substrate and the second substrate are disposed opposite to each other;

the display panel further comprises a display area, the display area comprises a plurality of pixel opening areas and a non-opening area positioned between two adjacent pixel opening areas, the non-opening area comprises a first non-opening area positioned between pixels with different light-emitting colors, and at least part of the first non-opening area comprises a color cast adjusting structure;

the color shift adjusting structure covers the first non-open area in a direction perpendicular to a direction in which the pixel open area is directed to the first non-open area.

In a second aspect, an embodiment of the present invention further provides a display device, including the display panel according to the first aspect.

The display panel provided by the invention comprises a display area, wherein the display area comprises a plurality of pixel opening areas and a non-opening area positioned between two adjacent pixel opening areas, the non-opening area comprises a first non-opening area positioned between pixels with different luminous colors, at least part of the first non-opening area comprises a color shift adjusting structure, the color shift adjusting structure covers the first non-opening area along a direction vertical to a direction in which the pixel opening area points to the first non-opening area, and the color shift problem occurring when a visual angle is changed is solved by adjusting the polarization direction of light incident on the color shift adjusting structure; meanwhile, the problem of light leakage of metal wiring between pixels with different light emitting colors is solved by covering the first non-opening area with the color cast adjusting structure, so that the display effect of the display panel is improved.

Drawings

To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description, although being some specific embodiments of the present invention, can be extended and extended to other structures and drawings by those skilled in the art according to the basic concepts of the device structure, the driving method and the manufacturing method disclosed and suggested by the various embodiments of the present invention, without making sure that these should be within the scope of the claims of the present invention.

FIG. 1 is a schematic diagram of a display panel according to the prior art;

FIG. 2 is a schematic diagram of an emergent ray of FIG. 1;

fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 4 is a schematic top view of a display area according to an embodiment of the present invention;

FIG. 5 is a schematic view of a cross-sectional view along AA in FIG. 4;

FIG. 6 is a schematic view of another cross-sectional configuration along AA in FIG. 4;

FIG. 7 is a schematic view of another cross-sectional configuration along AA in FIG. 4;

fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an optical phase adjustment structure according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of another optical phase adjustment structure according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of another optical phase adjustment structure according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of another optical phase adjustment structure according to an embodiment of the present invention;

fig. 14 is a schematic top-view structure diagram of a color filter structure according to an embodiment of the present invention;

fig. 15 is a schematic structural view of a first retaining wall section according to an embodiment of the present invention;

FIG. 16 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 17 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and completely by embodiments with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the basic idea disclosed and suggested by the embodiments of the present invention, are within the scope of the present invention.

Fig. 1 is a schematic structural diagram of a display panel in the prior art, and fig. 2 is a schematic structural diagram of an emergent light in fig. 1, as shown in fig. 1 and fig. 2, the display panel includes an array substrate 010, a color filter substrate 011, and a liquid crystal layer 012 located between the array substrate 010 and the color filter substrate 011, liquid crystal molecules in the liquid crystal layer 012 are deflected under the action of a pixel electrode (not shown in the figure) and a common electrode (not shown in the figure), and the emergent light of a backlight module (not shown in the figure) enters the color filter substrate 011 after passing through the deflected liquid crystal. The color film substrate 011 can include a color resistance layer 0111, the color resistance layer 0111 can include a red color resistance 0111R, a green color resistance 0111G and a blue color resistance 0111B, and when the watching angles of the viewers are different, the watching display effects are different. As shown in fig. 2, when the viewer is positioned right above the green color barrier 0111G, the emergent light of the display panel is normal; when the viewer is positioned at one side of the green color resistance 0111G which is deviated to the blue color resistance 0111B, the emergent light of the display panel is the light of green and red; when the viewer is positioned at the side of the green color resistor 0111G biased to the red color resistor 0111R, the light emitted from the display panel is a green light superimposed with a blue light. Thus, a serious color shift problem is generated along with the change of the viewing angle, and the display effect is seriously influenced.

In order to solve the above technical problem, an embodiment of the present invention provides a display panel, including a first substrate, a second substrate and a liquid crystal layer disposed between the first substrate and the second substrate, wherein the first substrate and the second substrate are disposed opposite to each other; the display panel also comprises a display area, the display area comprises a plurality of pixel opening areas and a non-opening area positioned between two adjacent pixel opening areas, the non-opening area comprises a first non-opening area positioned between pixels with different light-emitting colors, and at least part of the first non-opening area comprises a color cast adjusting structure; the color shift adjusting structure covers the first non-opening area in a direction perpendicular to a direction in which the pixel opening area is directed to the first non-opening area. By adopting the technical scheme, at least part of the first non-opening area comprises a color cast adjusting structure, the color cast adjusting structure covers the first non-opening area along the direction vertical to the direction of the pixel opening area pointing to the first non-opening area, and the color cast problem occurring when the visual angle is changed is solved by adjusting the polarization direction of light incident on the color cast adjusting structure; meanwhile, the problem of light leakage of metal wiring between pixels with different light emitting colors is solved by covering the first non-opening area with the color cast adjusting structure, so that the display effect of the display panel is improved.

The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.

Fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention, fig. 4 is a schematic structural diagram of a top view of a display area according to an embodiment of the present invention, fig. 5 is a schematic structural diagram of a cross-section along AA of fig. 4, and referring to fig. 3, fig. 4 and fig. 5, the display panel according to an embodiment of the present invention includes a first substrate 100, a second substrate 101 and a liquid crystal layer 102 disposed between the first substrate 100 and the second substrate 101; the display panel further includes a display area 180, the display area 180 includes a plurality of pixel opening areas 181 and a non-opening area 182 between two adjacent pixel opening areas 181, the non-opening area 182 includes a first non-opening area 183 between pixels of different emission colors, at least a portion of the first non-opening area 183 includes a color shift adjusting structure 1831; the color shift adjusting structure 1831 covers the first non-opening area 183 in a direction perpendicular to a direction in which the pixel opening area 181 points to the first non-opening area 183.

For example, the first substrate 100 may be an array substrate, the second substrate 101 may include a package cover plate, a liquid crystal layer 102 is disposed between the first substrate 100 and the second substrate 101, the liquid crystal layer 102 includes a plurality of liquid crystal molecules, the liquid crystal molecules are deflected under the action of an electric field, light emitted by a backlight module (not shown in the figure) is emitted from the second substrate 101 under the action of the liquid crystal molecules, and the display panel implements a display function. Further, in the display panel provided by the embodiment of the present invention, the liquid crystal molecules may deflect in a plane, and correspondingly, both the pixel electrode and the common electrode in the display panel may be disposed on one side of the array substrate. As shown in fig. 3, the first substrate 100 may include a pixel electrode 130 and a common electrode 190, the pixel electrode 130 and the common electrode 190 are disposed in an insulating manner, and the pixel electrode 130 is located at a side close to the liquid crystal layer 102, and liquid crystal molecules in the liquid crystal layer 102 are deflected in a plane by the cooperation of the pixel electrode 130 and the common electrode 190.

Further, the display panel includes a display area 180, and the display area 180 includes a plurality of pixel opening areas 181 and a non-opening area 182 located between two adjacent pixel opening areas 181, where the pixel opening areas 181 can be understood as an area where the pixel electrodes 130 are disposed, and the non-opening area 182 can be understood as an area between two adjacent pixel electrodes 130, as shown in fig. 4. The non-opening region 182 includes a first non-opening region 183 located between pixels with different light emitting colors, and at least a portion of the first non-opening region 183 is provided with a color shift adjusting structure 1831, and the polarization direction of light incident thereon is adjusted by the color shift adjusting structure 1831, so that the color of a picture seen under different viewing angles is prevented from being inconsistent, the display picture of the display panel is not affected by the viewing angle, and the display effect of the display panel is ensured to be good. Further, along a direction (X direction shown in the figure) perpendicular to the direction of the pixel opening area 181 pointing to the first non-opening area 183, the color shift adjusting structure 1831 covers the first non-opening area 183, so that the polarization direction of the light incident thereon can be fully adjusted, and the display effect of the display panel is further improved.

Further, with reference to fig. 3, the display panel provided in the embodiment of the present invention may further include a color film structure 120, where the color film structure 120 may include a plurality of color resist blocks with different light-emitting colors, for example, a red resist block, a green resist block, and a blue resist block. Further, the color film structure 120 may be disposed in the first substrate 100, that is, the color film structure 120 is disposed in the array substrate, for example, the color film structure may be disposed on a side of the pixel electrode 130 away from the second substrate 101, the pixel electrode 130 and the color resist blocks in the color film structure 120 are disposed in a one-to-one correspondence, and a vertical projection of the pixel electrode 130 on a plane where the color film structure 120 is located in a coverage area of the color resist blocks, so that when the display panel is bent, bending degrees of the color film structure 120 and the pixel electrode 130 are the same or similar, an alignment effect of the color film structure 120 and the pixel electrode 130 is good, and a display effect is not affected by a misalignment between the pixel electrode 130 and the color film structure 120 due to bending of the display panel, thereby ensuring that the display effect of the display panel is good.

Further, as shown in fig. 3, the first substrate 100 may further include a driving circuit 140, where the driving circuit 140 is configured to provide a display signal to the pixel electrode 130, so as to ensure that the display panel can display normally. Further, the driving circuit 140 may include an active layer, a gate electrode, a source electrode and a drain electrode, and the pixel electrode 130 may be electrically connected to the source electrode or the drain electrode through a via hole, so as to implement normal transmission of a display signal. Further, as shown in fig. 3, the first substrate 100 provided in the embodiment of the present invention may further include a bridging layer 161, the bridging layer 161 is located between the film layer where the pixel electrode 130 is located and the film layer where the driving circuit 140 is located, and the bridging layer 161 is electrically connected to the pixel electrode 130 and the driving circuit 140 respectively, so that the pixel electrode 130 and the driving circuit 140 are electrically connected through the bridging layer 161, thereby avoiding a deep hole problem when the pixel electrode 130 is connected to the driving circuit 140, improving connection stability between the pixel electrode 130 and the driving circuit 140, and reducing process difficulty.

To sum up, in the display panel provided in the embodiment of the present invention, at least a portion of the first non-opening area includes the color shift adjusting structure, and the color shift adjusting structure covers the first non-opening area along a direction perpendicular to a direction in which the pixel opening area points to the first non-opening area, and the color shift adjusting structure adjusts a polarization direction of light incident thereon to solve a color shift problem occurring when a viewing angle changes; meanwhile, the problem of light leakage of metal wiring between pixels with different light emitting colors is solved by covering the first non-opening area with the color cast adjusting structure, so that the display effect of the display panel is improved. Furthermore, in the display panel provided by the embodiment of the invention, the color resistance layer is arranged on one side of the array substrate, so that when the display panel is bent, the bending degrees of the color resistance layer and the pixel electrode are the same or similar, the alignment effect of the color resistance layer and the pixel electrode is good, the display effect cannot be influenced by the dislocation of the pixel electrode and the color resistance layer caused by the bending of the display panel, and the good display effect of the display panel is ensured. Furthermore, in the display panel provided by the embodiment of the invention, the pixel electrode is electrically connected with the driving circuit through the bridging layer, so that the good connection stability between the pixel electrode and the driving circuit is ensured, and the connection process is simple.

On the basis of the above embodiments, the color shift adjusting structure may include many different implementations, and several possible implementations are described below.

As a possible implementation manner, the color shift adjusting structure 1831 may include an optical phase adjusting structure for adjusting the phase of light incident on the optical phase adjusting structure.

The light phase adjusting structure can be understood as a structure capable of adjusting the phase of light incident on the light phase adjusting structure, light emitted from the display area is incident on the light phase adjusting structure, the phase of the light is adjusted by the light phase adjusting structure, the emission of color polarization light is eliminated or reduced, and the display effect of the display panel is improved.

On the basis of the above embodiments, the optical phase adjustment structure may include a plurality of different implementations, and the following description is made of several possible implementations.

As a possible implementation, with continued reference to fig. 3-5, the optical phase adjustment structure may include a first phase adjustment electrode 1832 and a second phase adjustment electrode 1833; the pixel opening area 181 is provided with a pixel electrode 130, the pixel electrode 130 and the first phase adjustment electrode 1832 are both disposed on a side of the first substrate 100 facing the second substrate 101, and potentials of the pixel electrode 130 and the first phase adjustment electrode 1832 are different; the second phase adjustment electrode 1833 is disposed on a side of the second substrate 101 facing the first substrate 100, and a vertical projection of the first phase adjustment electrode 1832 on a plane of the first substrate 100 at least partially overlaps a vertical projection of the second phase adjustment electrode 1833 on the plane of the first substrate 100.

With continuing reference to fig. 3 and 5, the pixel opening area 181 is provided with the pixel electrodes 130, the pixel electrodes 130 are disposed on a side of the first substrate 100 facing the second substrate 101, the plurality of pixel electrodes 130 are arranged at intervals, an in-plane electric field is generated between the pixel electrodes 130 and the common electrode 190 under the action of a display signal, and liquid crystal molecules at a position corresponding to the pixel opening area 181 rotate in a plane, that is, long axes of the liquid crystal molecules are always located on the same plane. Further, the first phase adjustment electrode 1832 and the second phase adjustment electrode 1833 in the optical phase adjustment structure are respectively located on different sides of the liquid crystal, for example, the first phase adjustment electrode 1832 is disposed on one side of the first substrate 100, the second phase adjustment electrode 1833 is disposed on one side of the second substrate 101, the first phase adjustment electrode 1832 and the second phase adjustment electrode 1833 generate a vertical electric field, at least the liquid crystal molecules at the position corresponding to the first non-opening area 183 deflect under the action of the vertical electric field, and the deflection manner of the liquid crystal at the positions corresponding to the pixel opening area 181 and the first non-opening area 183 is different. Further, the electric potentials on the pixel electrode 130 and the first phase adjustment electrode 1832 are different, and the control capability of the electrode on the liquid crystal molecules at the positions of the pixel opening area 181 and the first non-opening area 183 is different, so as to ensure that the phases of the light passing through the pixel opening area 181 and the first non-opening area 183 are different, thereby achieving the purpose of performing optical phase adjustment on the light emitted from the pixel opening area 181. Further, the first phase adjustment electrode 1832 is disposed on a side of the first substrate 100 facing the second substrate 101, and may be disposed on the same layer as the pixel electrode 130, and the same process is performed to ensure that the film structure of the display panel is simple and the process for fabricating the pixel electrode 130 and the first phase adjustment electrode is simple.

Alternatively, fig. 6 is a schematic cross-sectional view along AA of fig. 4. in conjunction with fig. 5 and 6, first phase adjustment electrode 1832 comprises a plurality of sub-phase adjustment electrodes 1834; in the first non-opening region 183 between two adjacent pixel opening regions 181, the potential difference between the sub phase adjustment electrode 1834 and the second phase adjustment electrode 1833 is gradually increased or decreased in a direction from the pixel opening region 181 toward the first non-opening region 183. For example, fig. 5 illustrates an example in which the potential difference between the sub-phase adjustment electrode 1834 and the second phase adjustment electrode 1833 gradually decreases in the direction from the pixel opening area 181 to the first non-opening area 183, and fig. 6 illustrates an example in which the potential difference between the sub-phase adjustment electrode 1834 and the second phase adjustment electrode 1833 gradually increases in the direction from the pixel opening area 181 to the first non-opening area 183.

The first phase adjustment electrode 1832 includes a plurality of sub-phase adjustment electrodes 1834, the sub-phase adjustment electrodes 1834 may be patterned by a developing and exposing process to form stripe electrodes, and a voltage of each sub-phase adjustment electrode 1834 may be independently controlled by an IC chip. The potential difference between each sub-phase adjustment electrode 1834 and the second phase adjustment electrode 1833 is gradually increased or decreased to realize the directional deflection of the liquid crystal molecules in the first non-opening region 183 in different directions along with the gradual change of the potential difference, and the phase emission of the light passing through the first non-opening region 183 is gradually changed to realize the gradual adjustment of the phase of the light. Further, a polarizer may be further disposed on a side of the second phase adjustment electrode 1833 away from the first phase adjustment electrode 1832, and light passing through the phase adjustment electrode cannot exit through the polarizer, so as to achieve the purpose of eliminating color polarization and improve the display effect of the display panel.

Optionally, as shown in fig. 5 and fig. 6, the pixel opening area 181 is further provided with a common electrode 190, and the common electrode 190 is disposed on a side of the first substrate 100 close to the second substrate 101; the common electrode 190 is disposed on a side of the pixel electrode 130 facing the first substrate 100, and a vertical projection of the common electrode 190 on a plane of the first substrate 100 at least partially overlaps a vertical projection of the pixel electrode 130 on the plane of the first substrate 100.

Specifically, as shown in fig. 5 and fig. 6, the common electrode 190 may include a main body portion 1901 and a hollow portion 1902, where a vertical projection of the main body portion 1901 on the plane of the first substrate 100 at least partially overlaps a vertical projection of the pixel electrode 130 on the plane of the first substrate 100, so that an in-plane electric field is generated between the pixel electrode 130 and the main body portion 1901 of the common electrode 190, for controlling liquid crystal molecules to deflect in a plane, thereby implementing normal display. Further, the common electrode 190 further includes a hollow portion 1902, and a vertical projection of the hollow portion 1902 on the plane of the first substrate 100 and a vertical projection of the first phase adjustment electrode 1832 on the plane of the first substrate 100 are at least partially overlapped, so that the common electrode 190 does not generate an electric field with the first phase adjustment electrode 1832, that is, the display electrode and the phase adjustment electrode do not interfere with each other, thereby ensuring that display and phase adjustment are performed independently. Further, when the display panel is a touch display panel, the common electrode 190 may also be reused as a touch electrode, and a common voltage signal is applied to the common electrode 190 in the display stage, so that the common electrode 190 and the pixel electrode 130 form an in-plane electric field; in the touch stage, the common electrode 190 may receive a corresponding touch signal for detecting a touch position and/or a touch pressure based on a touch operation of a user, so as to improve a function of the display panel. Further, the common electrode 190 may be a transparent common electrode, for example, made of a transparent electrode material, such as Indium Tin Oxide (ITO).

Alternatively, fig. 7 is another schematic cross-sectional structure view along AA in fig. 4, as shown in fig. 7, the common electrode 190 includes a plurality of sub-common electrodes 1901, the pixel electrode 130 includes a plurality of sub-pixel electrodes 1311, the sub-common electrodes 1901 extend along a first direction, and the plurality of sub-common electrodes 1901 are arranged along a second direction (X direction in the figure); the subpixel electrodes 1311 extend in a first direction and are arranged in a second direction (e.g., X direction in fig. 7). In the second direction, the sub-common electrode 1901 and the sub-pixel electrode 1311 are sequentially disposed; the first direction and the second direction intersect and are parallel to the plane of the first substrate 100.

Illustratively, as shown in FIG. 7, the first direction may be a direction perpendicular to the paper surface, and the second direction is parallel to a direction in which the pixel opening area 181 points to the non-opening area 182, as shown in the X direction. Each sub-common electrode 1901 and each sub-pixel electrode 1311 are arranged in a separated and staggered manner, and an in-plane electric field is generated between each sub-common electrode 1901 and each sub-pixel electrode 1311 under the control of a display signal, so that the liquid crystal molecules in the pixel opening area 181 rotate in a plane, light rays in all directions can pass through the liquid crystal molecules, direction dependence is avoided, and the display visual angle is enlarged.

As a possible implementation manner, fig. 8 is a schematic structural diagram of another display panel provided in the embodiment of the present invention; fig. 9 is a schematic structural diagram of an optical phase adjustment structure according to an embodiment of the present invention, as shown in fig. 9. Optionally, the optical phase adjustment structure includes a supporting wall 103 and a plurality of polarization beams 104 disposed in the supporting wall 103. The long axes of any two polarization photons 104 extend in different directions along the direction in which the pixel opening region 181 points to the first non-opening region 183.

The material of the supporting wall 103 may be a photoresist adhesive such as an ultraviolet curing resin adhesive, or a thermosetting adhesive such as a thermosetting resin adhesive, and the color of the material of the supporting wall 103 may be colorless and transparent, and the specific material of the supporting wall 103 is not limited in the embodiment of the present invention. A plurality of polarization members 104 are arranged in the supporting retaining wall 103, the extension directions of the long axes of any two polarization members 104 are different, and the light rays incident to the optical phase adjusting structure are sequentially subjected to phase adjustment, so that the purpose of performing phase adjustment on the color polarization light rays of the display panel is realized. Specifically, in the direction pointing to the first non-opening region 183 along the pixel opening region 181, the extending directions of the long axes of any two polarization beams 104 are different, for example, the inclination angles of the long axes of the polarization beams 104 become larger or smaller in sequence, and the phase of the color-shifted light passing through the first non-opening region 183 is gradually changed, thereby gradually adjusting the phase of the light. Furthermore, a polarizer may be further disposed on a side of the second substrate 101 away from the first substrate 100, and light passing through the polarizer 104 cannot exit through the polarizer, so as to achieve the purpose of eliminating color polarization and improve the display effect of the display panel.

Optionally, the polarizer 104 includes liquid crystal molecules and/or iodide ions.

When the polarizer 104 is a liquid crystal molecule, the liquid crystal molecule can be deflected under the action of an electric field or an initial alignment film, so that the long axis directions of any two polarizers 104 are different. And/or, iodide ions with a polarization function can be added into the supporting retaining wall 103, and the iodide ions are subjected to directional treatment through a designed electric field, so that the difference of the long axis directions of any two polarization photons 104 is realized.

On the basis of the above embodiments, the optical phase adjustment structure may be a λ/4 phase adjustment structure.

The optical phase adjusting structure may be a λ/4 phase adjusting structure, that is, the optical phase adjusting structure forms a λ/4 phase difference plate. Taking the schematic cross-sectional structure shown in fig. 5 as an example, light incident to the pixel opening area 181 is modulated by liquid crystal molecules, and is adjusted to be elliptically polarized light from linearly polarized light, and the elliptically polarized light is modulated by the λ/4 phase adjustment structure and then is adjusted to be linearly polarized light again, but the polarization direction changes, and is perpendicular to the polarization axis of the polarizer arranged on the side of the second substrate 101 far away from the first substrate 100, so that the light cannot pass through the polarizer arranged on the side of the second substrate 101, thereby achieving the purpose of eliminating color polarization and ensuring the display effect of the display panel.

With continued reference to fig. 5-8, optionally, the display panel further includes a first polarizer 106 disposed on a side of the second substrate 101 away from the first substrate 100;

the polarization direction of the light emitted from the display area 180 after passing through the color shift adjusting structure 1831 intersects with the polarization axis of the first polarizer 106.

The first polarizer 106 is disposed on a side of the second substrate 101 away from the first substrate 100, and the first polarizer 106 may be used for filtering polarized light at a specific angle. The polarization direction of light emitted from the display area 180 after passing through the color shift adjusting structure 1831 intersects with the polarization axis of the first polarizer 106, so that the light passing through the light phase adjusting structure in the color shift adjusting structure 1831 cannot exit through the first polarizer 106, and the first polarizer 106 and the light phase adjusting structure are combined to effectively eliminate the color shift of the display panel and improve the display effect of the display panel.

Fig. 10 is a schematic structural diagram of another display area panel according to an embodiment of the present invention, and fig. 11 is a schematic structural diagram of another optical phase adjustment structure according to an embodiment of the present invention, and referring to fig. 10 and fig. 11, the optical phase adjustment structure includes a supporting wall 103, a first polarizing layer 107, and a second polarizing layer 108. The first polarizing layer 107 and the second polarizing layer 108 are disposed in order along a direction (X direction as shown in the figure) in which the pixel opening area is directed to the first non-opening area, and polarizing axis directions of the first polarizing layer 107 and the second polarizing layer 108 are orthogonal.

Wherein, first non-opening area 183 is provided with and supports barricade 103, first polarisation layer 107 and second polarisation layer 108, because the polarization axis direction quadrature of first polarisation layer 107 and second polarisation layer 108, the existence of first polarisation layer 107 and second polarisation layer 108 is equivalent to two polaroids and carries out twice filtration to the colour polarisation respectively, and the light through first polarisation layer 107 can not pass through second polarisation layer 108, so eliminates colour polarisation, guarantees display panel's display effect. Further, the placement angles of the first polarizing layer 107 and the second polarizing layer 108 may be set according to the requirements of the actual design of the display panel, which is not limited in the embodiment of the present invention.

Optionally, at least one of the first polarizing layer 107 and the second polarizing layer 108 is located in the supporting retaining wall 103; alternatively, the first polarizing layer 107 and the second polarizing layer 108 are both located on the surface of the supporting retaining wall 103.

Fig. 12 is a schematic structural diagram of another optical phase adjustment structure according to an embodiment of the present invention, fig. 13 is a schematic structural diagram of another optical phase adjustment structure according to an embodiment of the present invention, and referring to fig. 11 to fig. 13, fig. 11 illustrates an example where the first polarizing layer 107 and the second polarizing layer 108 are both located in the supporting retaining wall 103, fig. 12 illustrates an example where the first polarizing layer 107 is located in the supporting retaining wall 103 and the second polarizing layer 108 is located on the surface of the supporting retaining wall 103, and fig. 13 illustrates an example where the first polarizing layer 107 and the second polarizing layer 108 are both located on the surface of the supporting retaining wall 103.

Further, a description is given next of possible implementations of the first polarizing layer 107 and the second polarizing layer 108. Taking the example in fig. 11 that the first polarizing layer 107 and the second polarizing layer 108 are both located in the supporting retaining wall 103, the preparation material of the supporting retaining wall 103 may be doped with polarizing photons (such as liquid crystal molecules or iodide ions, etc.), and then the preparation material of the supporting retaining wall 103 doped with polarizing photons is coated on the corresponding film layer of the first substrate and/or the second substrate, and the designed electric field is used to orient the polarizing photons therein, and then exposure and development are performed to form the supporting retaining wall 103 and the first polarizing layer 107 and the second polarizing layer 108 located in the supporting retaining wall 103. Taking the example in fig. 13 that the first polarizing layer 107 and the second polarizing layer 108 are both located on the surface of the supporting retaining wall 103, the supporting retaining wall 103 may be formed first, an alignment solution doped with polarizing photons is coated on the surface of the supporting retaining wall 103, the alignment solution may be made of polyimide, and a photo-alignment process is performed on the alignment solution, so that the first polarizing layer 107 and the second polarizing layer 108 are formed on the surface of the supporting retaining wall 103, respectively.

Further, the refractive index of the material of the retaining wall 103 may be smaller than the refractive index of the liquid crystal molecules between the first substrate 100 and the second substrate 101, so that the refraction angle of the light emitted from the display region 180 entering the retaining wall 103 is larger than the incident angle thereof to reduce the emission of the color polarized light. It should be noted that, with reference to fig. 10, in the embodiment of the present invention, optionally, the display panel further includes a color film structure 120;

the color film structure 120 is disposed on the first substrate 100, and the color film structure 120 includes a red color film 1201, a green color film 1202, and a blue color film 1203;

the supporting retaining wall 103 is disposed between the first substrate 100 and the second substrate 101, and is located on one side of the color film structure 120 close to the second substrate 101; the supporting wall 103 at least includes a first wall portion 1031, and a vertical projection of the first wall portion 1031 on a plane where the first substrate 100 is located covers a vertical projection of a gap position between color films of different colors on the plane where the first substrate 100 is located.

Fig. 14 is a schematic top-view structure diagram of a color film structure according to an embodiment of the present invention, and as shown in fig. 13 and fig. 14, the color film structure 120 is located in the display area 180, and light emitted from the backlight module passes through a red color film 1201, a green color film 1202, and a blue color film 1203 in the color film structure 120 to form light with a single color. The red color film 1201, the green color film 1202 and the blue color film 1203 are arranged in an array at intervals in a plurality of display areas in the liquid crystal display panel, a gap position exists between the color films with different colors, a vertical projection of the first barrier wall sub-portion 1031 on the plane of the first substrate 100 is arranged to cover a vertical projection of the gap position between the color films with different colors on the plane of the first substrate 100, the polarization direction of light passing through the color film structure 120 is adjusted, and the emergence of color polarization light is eliminated or reduced. Further, as shown in fig. 14, in the same direction, via holes 109 are formed between adjacent red color films 1201, between adjacent green color films 1202, and between adjacent blue color films 1203, and the pixel electrode 130 and the driving circuit 140 can be electrically connected through the via holes 109 in the color film structure 120. Meanwhile, the vertical projection of the first retaining wall part 1031 on the plane of the first substrate 100 covers the via hole 109 and the gaps between the adjacent red color films 1202, between the adjacent green color films 1203 and between the adjacent blue color films 1204, so as to reduce the light leakage and parallax color shift of the metal traces.

Fig. 15 is a schematic structural diagram of a first retaining wall subsection according to an embodiment of the present invention, as shown in fig. 15, optionally, along a direction (X direction shown in fig. 10) in which the pixel opening region 181 points to the first non-opening region 183, the first retaining wall subsection 1031 includes a first sub-retaining wall subsection 1032 and a second sub-retaining wall subsection 1033 arranged in sequence;

the first polarizing layer 107 is located in the first sub-wall subsection 1032, and the second polarizing layer 108 is located in the second sub-wall subsection 1033.

The first sub-retaining wall subsection 1032 and the second sub-retaining wall subsection 1033 are arranged in parallel, the first sub-retaining wall subsection 1032 can be prepared firstly in the preparation process, under the action of an electric field, the polarons in the first polarizing layer 107 can be directionally rotated, then the second sub-retaining wall subsection 1033 is prepared, the polarons in the second polarizing layer 108 can be directionally rotated, step-by-step operation is carried out, it is guaranteed that liquid crystal molecules respectively rotate to preset angles, and the difficulty of the preparation process is reduced. The directions of the polarizing axes of the first polarizing layer 107 and the second polarizing layer 108 are orthogonal, so that the color cast light emitted from the first polarizing layer 107 cannot be emitted from the second polarizing layer 108, the color cast phenomenon of the display panel is eliminated, and the display effect of the display panel is improved.

In summary, the above embodiments take the optical phase adjustment structure of the color shift adjustment structure as an example for explanation, the phase of the light incident thereon is adjusted by the optical phase adjustment structure, the color polarization is directly eliminated by the optical phase adjustment structure, or the color polarization is eliminated by the optical phase adjustment structure and the polarizer, so as to improve the display effect of the display panel.

As another possible embodiment of the color shift adjusting structure, the color shift adjusting structure 1831 may optionally include a light absorbing structure for absorbing light incident on the light absorbing structure.

The light absorption structure is used for absorbing light incident on the light absorption structure so as to eliminate or reduce the emergence of color cast light of the display panel and improve the display effect of the display panel.

Fig. 16 is a schematic structural view of another display area panel according to an embodiment of the present invention, as shown in fig. 16 and fig. 3, optionally, the light absorption structure includes a supporting wall 103 disposed between the first substrate 100 and the second substrate 101;

the vertical projection of the supporting retaining wall 103 on the plane of the first substrate 100 at least covers the first non-opening area 183; supporting wall 103 includes a plurality of wall sidewalls 1034; an opening 1035 is disposed in the retaining wall sidewall 1034 between two adjacent pixel opening regions 181, and the opening 1035 penetrates through the retaining wall sidewall 1034.

The vertical projection of the supporting wall 103 on the plane of the first substrate 100 at least covers the first non-opening area 183, and the supporting wall 103 may be a black supporting wall, which absorbs the light incident thereon to eliminate the emergence of color cast light from the display panel.

Further, the supporting wall 103 includes a plurality of wall sidewalls 1034, and an opening 1035 is disposed to penetrate through the wall sidewall 1034 between two adjacent pixel opening regions 181, so that liquid crystal between different pixel opening regions 181 can flow through the opening 1035, which can realize communication between liquid crystal molecules, eliminate or reduce bubbles generated during the display panel attaching process, and eliminate the influence of bubbles on the display effect.

Based on the above inventive concept, the embodiment of the invention also provides a display device. The display device includes the display panel according to any embodiment of the present invention, and therefore, the display device provided in the embodiment of the present invention has the corresponding beneficial effects of the display panel provided in the embodiment of the present invention, and details are not repeated herein. For example, the display device may be an electronic device such as a mobile phone, a computer, a smart wearable device (e.g., a smart watch), and an in-vehicle display device, which is not limited in this embodiment of the present invention. For example, fig. 17 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 17, the display device includes the display panel 200 in the above-described embodiment.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. The display panel is characterized by comprising a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, and the liquid crystal layer is arranged between the first substrate and the second substrate;

the display panel also comprises a display area, wherein the display area comprises a plurality of pixel opening areas and a non-opening area positioned between two adjacent pixel opening areas, the non-opening area comprises a first non-opening area positioned between pixels with different light-emitting colors, and at least part of the first non-opening area comprises a color cast adjusting structure;

the color shift adjusting structure covers the first non-open area along a direction perpendicular to a direction in which the pixel open area points to the first non-open area;

the color cast adjusting structure comprises an optical phase adjusting structure, and the optical phase adjusting structure is used for adjusting the phase of light rays incident on the optical phase adjusting structure;

the optical phase adjusting structure comprises a supporting retaining wall, a first polarizing layer and a second polarizing layer;

and the first polarizing layer and the second polarizing layer are sequentially arranged along the direction of the pixel opening area pointing to the first non-opening area, and the polarizing axis directions of the first polarizing layer and the second polarizing layer are orthogonal.

2. The display panel of claim 1, wherein at least one of the first and second polarizing layers is located within the supporting barrier;

or the first polarizing layer and the second polarizing layer are both positioned on the surface of the supporting retaining wall.

3. The display panel according to claim 1, wherein the display panel further comprises a color film structure;

the color film structure is arranged on the first substrate and comprises a red color film, a green color film and a blue color film;

the supporting retaining wall is arranged between the first substrate and the second substrate and is positioned on one side, close to the second substrate, of the color film structure; the supporting retaining wall at least comprises a first retaining wall subsection, and the first retaining wall subsection is used for covering the gap position between the color films with different colors by the vertical projection on the plane where the first substrate is located and is used for vertical projection on the plane where the first substrate is located.

4. The display panel according to claim 3, wherein the first bank segments include a first sub-bank segment and a second sub-bank segment sequentially arranged along a direction in which the pixel opening area points to the first non-opening area;

the first polarizing layer is located in the first sub-retaining wall sub-part, and the second polarizing layer is located in the second sub-retaining wall sub-part.

5. A display device characterized by comprising the display panel according to any one of claims 1 to 4.