CN112130370A - Display panel and display device - Google Patents
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- CN112130370A CN112130370A CN202011060360.2A CN202011060360A CN112130370A CN 112130370 A CN112130370 A CN 112130370A CN 202011060360 A CN202011060360 A CN 202011060360A CN 112130370 A CN112130370 A CN 112130370A
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G02F1/1333—Constructional arrangements; Manufacturing methods
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Abstract
The invention discloses a display panel and a display device, belonging to the technical field of display, wherein the display panel comprises a first substrate and a second substrate which are oppositely arranged, and the first substrate is positioned on one side of the second substrate, which is far away from a light-emitting surface of the display panel; the display panel comprises a plurality of sub-pixels arranged in an array, and one side of the first substrate, which is close to the second substrate, comprises a plurality of protruding structures; the projection of the convex structure to the first substrate covers the sub-pixels. The display device comprises the display panel. The convex structure enables the first substrate in each sub-pixel range to form a curved surface design at one side close to the second substrate, liquid crystal molecules of a liquid crystal layer between the first substrate and the second substrate can be distributed along the curved surface, and the liquid crystal molecules distributed along the curved surface are beneficial to controlling light rays emitted by the backlight module to be emitted from a large visual angle of the display panel, so that the oblique-view contrast of the display panel can be increased, and the purpose of improving the display contrast of the whole display panel is achieved.
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 continuous development of display technology, the application of display panels is becoming more and more widespread, and the development of various portable electronic devices such as mobile phones, Personal Digital Assistants (PDAs), and notebook computers has increased the demand for light, thin, and small flat panel display devices. The liquid crystal display panel is used as a display panel with a mature preparation process at present, and occupies a large market in the field of display panels with low cost, good preparation yield and good display effect. Liquid Crystal Displays (LCDs) have many advantages such as thin body, power saving, and no radiation, and are widely used, such as Liquid Crystal televisions, mobile phones, personal digital assistants, digital cameras, computer screens, or notebook computer screens, which are dominant in the field of flat panel displays.
As the requirement of the user for the display effect of the liquid crystal display panel is continuously increased, the design level of the existing display product cannot meet the increasing requirement for high contrast.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a display panel and a display device capable of improving display contrast.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device to solve the problem that the prior art cannot meet the requirement of a user for high contrast display.
The invention discloses a display panel, comprising: the first substrate and the second substrate are oppositely arranged, and the first substrate is positioned on one side of the second substrate, which is far away from the light-emitting surface of the display panel; the display panel comprises a plurality of sub-pixels arranged in an array, and one side of the first substrate, which is close to the second substrate, comprises a plurality of protruding structures; the projection of the convex structure to the first substrate covers the sub-pixels.
Based on the same inventive concept, the invention also discloses a display device, which comprises the display panel.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
the display panel provided by the invention can be a liquid crystal display panel, the display panel comprises a first substrate and a second substrate which are oppositely arranged, the display panel can comprise a plurality of sub-pixels which are arranged in an array, the sub-pixels can comprise a plurality of sub-pixels which display different colors, and therefore, the display function of a picture is realized through whether each sub-pixel is opened or not. The side, close to the second substrate, of the first substrate comprises a plurality of protruding structures, the protruding structures cover pixels in an orthographic projection mode of the first substrate, namely the area, in the orthographic projection mode, of one protruding structure to the first substrate is larger than or equal to the area of one sub-pixel, the protruding structures enable the first substrate in each sub-pixel range to form a curved surface (convex surface) design close to the side of the second substrate, liquid crystal molecules of a liquid crystal layer between the first substrate and the second substrate can be distributed along the curved surface (convex surface), and after the liquid crystal molecules of the liquid crystal layer deflect in an electric field, the liquid crystal molecules distributed along the curved surface (convex surface) are beneficial to controlling light emitted by a backlight module to be emitted from a large visual angle of a display panel, so that the oblique view contrast of the display panel can be increased, and the purpose of improving the display contrast of the whole display panel is achieved.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic sectional view taken along line A-A' of FIG. 1;
FIG. 3 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;
FIG. 4 is an enlarged view of a portion of the first substrate of FIG. 2 adjacent to the second substrate;
FIG. 5 is a schematic cross-sectional view taken along line B-B' of FIG. 1;
FIG. 6 is a schematic cross-sectional view taken along line B-B' of FIG. 1;
FIG. 7 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;
FIG. 8 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;
FIG. 9 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;
FIG. 10 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;
fig. 11 is a schematic plan view of a display device according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Most of the liquid crystal displays in the existing market are backlight type liquid crystal displays, which include a housing, a liquid crystal display panel disposed in the housing, and a backlight module disposed in the housing. The liquid crystal display panel is a main component of the liquid crystal display, but the liquid crystal display panel does not emit light, and an image is normally displayed by a light source provided by the backlight module. Generally, a liquid crystal display panel is formed by bonding two glass substrates, liquid crystal is filled between the two glass substrates, pixel electrodes and common electrodes are respectively arranged on the opposite inner sides of the two glass substrates, the deflection direction of liquid crystal molecules is controlled by whether the two glass substrates are electrified or not, and light rays of a backlight module are refracted out to generate pictures. The liquid crystal display device has different display modes according to the arrangement of liquid crystal molecules. Liquid crystal display devices of the earlier TN mode (twisted nematic mode) have been widely used because of their advantages of high contrast, fast response time and low driving voltage. In the TN mode LCD device, when a voltage is applied to liquid crystal molecules aligned horizontally with the two substrates, the liquid crystal molecules are rotated and then aligned substantially vertically with the two substrates. Therefore, when a voltage is applied, the viewing angle of the TN mode LCD device becomes narrow due to the refractive index anisotropy of the liquid crystal molecules. In order to solve the problem of the narrow viewing angle, LCD display devices of various modes having a wide viewing angle have been developed in recent years. The IPS mode (In-Plane Switching mode, a mode In which an electric Field substantially parallel to a substrate surface is used to drive liquid crystal molecules to rotate along the substrate surface so as to respond) and the FFS mode (Fringe Field Switching mode, a Fringe Field Switching mode) are provided, In which a Fringe electric Field is generated by electrodes between pixels In the same Plane, so that aligned liquid crystal molecules between electrodes and directly above the electrodes can be rotated and switched In a direction parallel to the substrate surface, thereby improving the light transmission efficiency of a liquid crystal layer, the FFS mode overcomes the problem of low light transmission efficiency of the conventional Plane direction Switching technology, and realizes high light transmission efficiency under the premise of a wide viewing angle, the two display modes have the common characteristic that the rotation of liquid crystal is controlled by a horizontal electric Field, and both belong to the wide viewing angle technology of LCD display devices, thereby realizing the control of transmitted light, and the wide viewing angle technology is mainly used for widening the viewing angle of a panel, but also contributes to other characteristic expressions such as image quality and brightness.
The IPS and FFS panel has the advantages of large visual angle, high response speed, accurate color restoration and hard screen, and is not easy to generate water wave deformation when being slightly scratched by hands, so the IPS and FFS panel is called as a hard screen and avoids the phenomena of blurring, water wave diffusion, ghost shadow and the like. At present, the IPS mode and the FFS mode are mostly adopted for medium and small size display, aiming at improving the viewing angle characteristics, dynamic definition and color restoration effect. In the traditional IPS mode and FFS mode alignment, rubbing alignment (rubbing) or photo alignment is adopted to arrange liquid crystal molecules along a PI channel, and both rubbing and photo alignment cannot ensure that the PI alignment directions of upper and lower substrates are completely parallel, and moreover, twist angles (twist angle) are generated when the upper and lower substrates are bonded and aligned.
Based on the above problem, this application has provided a display panel and display device, can promote and show the contrast, satisfies user's high requirement, is favorable to improving the display quality. Specific embodiments of the display panel and the display device proposed in the present application are described in detail below.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic plan view of a display panel according to an embodiment of the present invention, fig. 2 is a schematic cross-sectional view along a direction a-a' in fig. 1, and a display panel 000 according to an embodiment of the present invention includes: the display panel comprises a first substrate 10 and a second substrate 20 which are oppositely arranged, wherein the first substrate 10 is positioned on one side of the second substrate 20 far away from a light emergent surface E of the display panel 000;
the display panel 000 includes a plurality of sub-pixels P arranged in an array, and the first substrate 10 includes a plurality of protruding structures 30 on a side close to the second substrate 20;
the projection of the protrusion structure 30 onto the first substrate 10 covers the pixel P.
Specifically, the display panel 000 provided in this embodiment may be a liquid crystal display panel, where the display panel 000 includes a first substrate 10 and a second substrate 20 that are oppositely disposed, optionally, the first substrate 10 may be an array substrate, the second substrate 20 may be a color filter substrate, and a liquid crystal layer 40 may be disposed between the first substrate 10 and the second substrate 20; the first substrate 10 is located on a side of the second substrate 20 away from the light-emitting surface E of the display panel 000, and the light-emitting surface E of the display panel 000 can be understood as a side surface of the display panel 000 displaying a picture. The display panel 000 may include a plurality of sub-pixels P arranged in an array, and the sub-pixels P may include a plurality of sub-pixels displaying different colors, so that a display function of a picture is realized by whether each sub-pixel P is turned on or not. In the embodiment, the side of the first substrate 10 close to the second substrate 20 includes a plurality of protruding structures 30, and the orthogonal projection of the protruding structures 30 onto the first substrate 10 covers the sub-pixels P, that is, the area of the orthogonal projection of one protruding structure 30 onto the first substrate 10 is greater than or equal to the area of one sub-pixel P, by disposing one protruding structure 30 on the side of the first substrate 10 close to the second substrate 20 in each sub-pixel P region, the protruding structure 30 may be a curved surface structure as shown in fig. 2, or a bump structure (as shown in fig. 3, fig. 3 is another cross-sectional structure schematic diagram in a-a' direction in fig. 1), and the embodiment is not particularly limited. The convex structure 30 disposed on the side of the first substrate 10 close to the second substrate 20 in this embodiment enables the first substrate 10 within each sub-pixel P to form a curved surface (convex surface) design close to the second substrate, so that the liquid crystal molecules of the liquid crystal layer 40 between the first substrate 10 and the second substrate 20 are arranged along the curved surface (convex surface), and after the liquid crystal molecules of the liquid crystal layer 40 are deflected in the electric field, the liquid crystal molecules arranged along the curved surface (convex surface) are favorable for controlling the light L emitted from the backlight module (not shown) to be emitted from the large viewing angle (oblique viewing direction, such as the M position in fig. 2) of the display panel 000, thereby increasing the oblique viewing contrast of the display panel 000 and achieving the purpose of improving the display contrast of the whole display panel.
It is understood that the first substrate 10 of this embodiment may be an array substrate, the second substrate 20 may be a color film substrate, and the array substrate may include a substrate, and a thin film transistor, a common electrode, a pixel electrode, a gate line, a data line, and the like formed on the substrate, where the thin film transistor is used as a switching device of a sub-pixel P in the display panel 000. The gate of the thin film transistor is connected to the gate line of the display panel, and is connected to the gate scanning circuit via the gate line, the source of the thin film transistor is connected to the data line, and is connected to the integrated circuit chip (IC) via the data line, the drain of the thin film transistor is connected to the pixel electrode, and a voltage is applied to the pixel electrode via the data line, so that an electric field is formed between the pixel electrode and the common electrode, and then liquid crystal molecules of the liquid crystal layer 40 are deflected in the electric field, thereby controlling whether the light L emitted from the backlight module is emitted, and further realizing the display of the.
It should be noted that fig. 1 and fig. 2 of this embodiment only schematically illustrate the structure of the display panel 000, but are not limited to this structure, and may also include other structures capable of implementing a display function. Fig. 2 of this embodiment only schematically illustrates that the first substrate 10 includes a plurality of protruding structures 30 on a side close to the second substrate 20, the protruding structures 30 may be formed by raising a certain film layer in the first substrate 10, or adding a new film layer to the first substrate 10 and raising the new film layer by an etching process, or may be implemented by other designs, only one side of the first substrate 10 close to the second substrate 20 needs to include a plurality of protruding structures 30 and the orthographic projection of the protruding structures 30 onto the first substrate 10 covers the cover pixel P, and this embodiment is not limited specifically.
In some alternative embodiments, referring to fig. 1-2 and 4 in combination, fig. 4 is a partial enlarged view of a side of the first substrate close to the second substrate in fig. 2, in the present embodiment, in a direction X parallel to the light emitting surface E of the display panel 000, a height H of the protrusion structure 30 in a direction Z perpendicular to the light emitting surface E of the display panel 000 is gradually reduced along a direction (direction X1 in fig. 4) in which a geometric center of the sub-pixel P points to an edge of the sub-pixel P.
This embodiment explains that the protrusion structure 30 disposed on the side of the first substrate 10 close to the second substrate 20 may be a curved structure, and in the direction X parallel to the light emitting surface E of the display panel 000, the protrusion structure 30 points to the edge of the sub-pixel P along the geometric center of the sub-pixel P (direction X1 in fig. 4), and the height H of the protrusion structure 30 in the direction Z perpendicular to the light emitting surface E of the display panel 000 gradually decreases, so that a curved design can be formed on the side of the first substrate 10 close to the second substrate within each sub-pixel P, the liquid crystal molecules of the liquid crystal layer 40 between the first substrate 10 and the second substrate 20 are arranged along the curved surface of the protrusion structure 30, after the liquid crystal molecules of the liquid crystal layer 40 are deflected in the electric field, the liquid crystal molecules arranged along the curved surface are favorable for controlling the light emitted from the backlight module to exit from the large viewing angle (oblique viewing direction) of the display panel 000, so as to increase the oblique viewing contrast of the display panel, the purpose of improving the display contrast of the whole display panel is achieved.
It is understood that, when the shape of the sub-pixel P is a regular figure (such as a square, a circle, an ellipse, or a triangle), the center point of the sub-pixel P is the geometric center thereof, and when the shape of the sub-pixel P is an irregular figure, the direction in which the geometric center of the sub-pixel P points to the edge of the sub-pixel P can be understood as the direction in which the middle position of the sub-pixel P points to the edge position, and fig. 1, 2, and 4 of the present embodiment are schematically illustrated by taking the figure of the sub-pixel P as a regular rectangle.
Optionally, with continuing reference to fig. 1-2 and fig. 4, in the present embodiment, a surface of the protruding structure 30 close to the second substrate 20 is a first surface 30A, and the first surface 30A is a curved surface structure.
The embodiment further explains that the protruding structure 30 disposed on the side of the first substrate 10 close to the second substrate 20 may be a curved surface structure, optionally, the surface of the protruding structure 30 close to the second substrate 20 is a first surface 30A, the first surface 30A is a curved surface structure, and the surface of the protruding structure 30 far from the second substrate 20 may be a planar structure, as shown in fig. 2 and fig. 4, so that the etching of the first surface 30A of the protruding structure 30 close to the second substrate 20 can be completed through an etching process on the film layer formed by the protruding structure 30, and a structure with the first surface 30A being a curved surface is formed, so that the liquid crystal molecules of the liquid crystal layer 40 between the first substrate 10 and the second substrate 20 are arranged along the curved surface of the first surface 30A of the protruding structure 30.
In some alternative embodiments, please refer to fig. 1 and fig. 5, fig. 5 is a schematic cross-sectional view taken along the direction B-B' in fig. 1, in this embodiment, the plurality of bump structures 30 includes a plurality of first bump structures 301 and a plurality of second bump structures 302, and the plurality of second bump structures 302 are disposed around the plurality of first bump structures 301;
the degree of curvature of the first surface 30A of the second convex structure 302 is greater than the degree of curvature of the first surface 30A of the first convex structure 301.
The embodiment further explains that the display panel may include a display area AA and a non-display area NA disposed around the display area AA, and the sub-pixels P are all located within the display area AA, that is, the plurality of protrusion structures 30 on the side of the first substrate 10 close to the second substrate 20 may also be located within the display area AA, so as to improve the contrast of the display image in the display area AA. The plurality of protruding structures 30 of the present embodiment includes a plurality of first protruding structures 301 and a plurality of second protruding structures 302, the plurality of second protruding structures 302 are disposed around the plurality of first protruding structures 301, that is, the first protruding structures 301 are farther away from the non-display area NA than the second protruding structures 302, the plurality of first protruding structures 301 may be located at a position in the middle of the display area AA, the plurality of second protruding structures 302 disposed around the plurality of first protruding structures 301 may be located at a position in the range of the display area AA closer to the non-display area NA, the first protruding structures 301 and the second protruding structures 302 have different bending degrees, the bending degree of the first surface 30A of the second protruding structure 302 is greater than that of the first surface 30A of the first protruding structure 301, so as to further improve the contrast of the image when the display panel 000 is viewed from a large viewing angle (M position in fig. 5), the display quality under a large visual angle is improved, and the user experience is improved.
It is understood that the different degrees of curvature of the first and second protruding structures 301 and 302 of the present embodiment refers to the degree of protrusion of the first surfaces 30A of the first and second protruding structures 301 and 302 toward the side close to the second substrate 20, and the greater the degree of protrusion, the greater the degree of curvature.
In some alternative embodiments, referring to fig. 1 and fig. 6, fig. 6 is a schematic cross-sectional view taken along a direction B-B' in fig. 1, in which the display panel 000 includes a display area AA and a non-display area NA disposed around the display area AA, and a curvature of the first surface 30A of the protrusion structure 30 gradually increases along a direction (a direction X2 in fig. 6) from a geometric center of the display area AA to the non-display area NA.
The embodiment further explains that the display panel may include a display area AA and a non-display area NA disposed around the display area AA, and the sub-pixels P are all located within the display area AA, that is, the plurality of protrusion structures 30 on the side of the first substrate 10 close to the second substrate 20 may also be located within the display area AA, so as to improve the contrast of the display image in the display area AA. In the present embodiment, the direction (direction X2 in fig. 6) pointing to the non-display area NA along the geometric center of the display area AA is set, the bending degree of the protruding structure 30 has a gradual process, that is, the bending degree of the first surface 30A of the protruding structure 30 gradually increases along the direction pointing to the non-display area NA along the geometric center of the display area AA, and the bending degree of any protruding structure 30 close to the non-display area NA is greater than the bending degree of any protruding structure 30 far away from the non-display area NA, so that the contrast of the image when the display panel 000 is viewed from a large viewing angle (position M in fig. 6) can be further improved, the display quality under the large viewing angle is improved, and the user experience is improved.
It is understood that the different degrees of curvature of the convex structures 30 of the present embodiment refer to the degree of protrusion of the first surface 30A of the convex structure 30 toward the side close to the second substrate 20, and the greater the degree of protrusion, the greater the degree of curvature.
In some alternative embodiments, please refer to fig. 1, fig. 7 and fig. 8 in combination, fig. 7 is a schematic cross-sectional structure of a-a 'direction in fig. 1, and fig. 8 is a schematic cross-sectional structure of a-a' direction in fig. 1, in this embodiment, along a direction Z1 that the first base board 10 points to the second base board 20, the first base board 10 at least includes a substrate 101, an array layer 102, a first passivation layer 103, a second passivation layer 104, and a common electrode layer 105 and a pixel electrode layer 106 located on a side of the first passivation layer 103 away from the substrate 101, which are stacked in sequence; optionally, the common electrode layer 105 is located on a side of the pixel electrode layer 106 close to the substrate 101, the second passivation layer 104 is located between the common electrode layer 105 and the pixel electrode layer 106 (as shown in fig. 7), or the pixel electrode layer 106 is located on a side of the common electrode layer 105 close to the substrate 101, and the second passivation layer 104 is located between the common electrode layer 105 and the pixel electrode layer 106 (as shown in fig. 8, optionally, the common electrode layer 105 may also be configured to include a plurality of common electrode blocks in order to avoid an electric field signal being shielded by the entire common electrode layer 105);
the array layer 102 includes a plurality of thin film transistors (not shown), the pixel electrode layer 106 includes a plurality of pixel electrodes 1061, and the sub-pixel P includes at least the thin film transistors and the pixel electrodes 1061 electrically connected to each other; the orthographic projection of the protrusion structure 30 onto the first substrate 10 covers the pixel electrode 1061.
The embodiment explains the film layer structure of the first substrate 10 of the display panel 000, and along the direction Z1 that the first substrate 10 points to the second substrate 20, the first substrate 10 may include at least a substrate 101, an array layer 102, a first passivation layer 103, a second passivation layer 104, and a common electrode layer 105 and a pixel electrode layer 106 located on a side of the first passivation layer 103 away from the substrate 101, where the substrate 101 may be used as a carrier of the film layer structure of the first substrate 10, the array layer 102 may include a plurality of thin film transistors arranged in an array, and gate lines and data lines (not shown in the figure) may also be provided. Optionally, the side of the array layer 102 away from the substrate 101 may further include a planarization layer 107 for planarizing the surface of the array layer 102 near the second substrate 20 to isolate the thin film transistor and the pixel electrode, so as to prevent the electric fields from interfering with each other. The side of the planarization layer 107 away from the substrate is a first passivation layer 103, the first Passivation (PV) layer 103 may be made of an inorganic material for repairing the array layer 102 with the via or the channel, the inorganic material may be SiNx or SiOx, or a SiNx laminated film (a composite layer of silicon oxide and silicon nitride), and the embodiment is not particularly limited. The first substrate 10 further includes a common electrode layer 105 and a pixel electrode layer 106 on a side of the first passivation layer 103 away from the substrate 101, the common electrode layer 105 may be located on a side of the pixel electrode layer 106 close to the substrate 101, the second passivation layer 104 is located between the common electrode layer 105 and the pixel electrode layer 106 (a bottom com structure as shown in fig. 7), and the second passivation layer 104 plays a role of insulation, or the pixel electrode layer 106 may be located on a side of the common electrode layer 105 close to the substrate 101, and the second passivation layer 104 is located between the common electrode layer 105 and the pixel electrode layer 106 (a top com structure as shown in fig. 8), and the second passivation layer 104 also plays a role of insulation. The display panel of the present embodiment is an IPS mode display panel or an FFS mode display panel, and can control the rotation of liquid crystal molecules of the liquid crystal layer 40 by a horizontal electric field between the pixel electrode layer 106 and the common electrode layer 105, thereby realizing a wide viewing angle and contributing to image quality, brightness, and the like.
The projection structure 30 of the embodiment covers the pixel electrode 1061 in the front projection direction of the first substrate 10, and one pixel electrode 1061 corresponds to one subpixel P, so that a curved surface design is formed on one side of the first substrate 10, which is close to the second substrate, in the range of each subpixel P through the projection structure 30, liquid crystal molecules of the liquid crystal layer 40 between the first substrate 10 and the second substrate 20 can be arranged along the curved surface, and after the liquid crystal molecules of the liquid crystal layer 40 are deflected in the electric field, the liquid crystal molecules arranged along the curved surface are beneficial to controlling light emitted by the backlight module to be emitted from a large viewing angle of the display panel 000, so that the contrast of the wide viewing angle of the display panel 000 can be increased, and the purpose of improving the display contrast of the whole display panel is achieved.
In some alternative embodiments, please continue to refer to fig. 1, fig. 7, and fig. 8, in this embodiment, the first substrate 10 further includes a first organic layer 108, and the first organic layer 108 is disposed on a side of the pixel electrode layer 106 close to the second substrate 20;
the surface of the first organic layer 108 on the side far from the pixel electrode layer 106 protrudes toward the side close to the second substrate 20 to form the protruding structure 30.
This embodiment explains that the plurality of protrusion structures 30 on the side of the first substrate 10 close to the second substrate 20 can be made by the first organic layer 108, the first organic layer 108 can be located on the side of the pixel electrode layer 106 close to the second substrate 20, that is, can be located on the side of the first substrate 10 close to the second substrate 20, the first organic layer 108 can be made separately after completing other film layer structures of the first substrate 10, the surface of the first organic layer 108 far from the side of the pixel electrode layer 106 is protruded towards the side close to the second substrate 20 by deposition and etching processes, and then the protrusion structures 30 are formed on the surface of the first organic layer 108 far from the side of the pixel electrode layer 106, so that a curved surface design can be formed on the side of the first substrate 10 close to the second substrate within the range of the sub-pixel P, and liquid crystal molecules of the liquid crystal layer 40 between the first substrate 10 and the second substrate 20 are arranged along the curved surface of the protrusion structures 30, after the liquid crystal molecules of the liquid crystal layer 40 are deflected in the electric field, the liquid crystal molecules arranged along the curved surface are beneficial to controlling the emergent light of the backlight module to be emergent from the large visual angle of the display panel 000, so that the squint contrast of the display panel 000 can be increased, and the purpose of improving the display contrast of the whole display panel is achieved.
Optionally, the material of the first organic layer 108 of this embodiment includes resin or photoresist, so that the first organic layer 108 has a high transmittance, and the setting of the first organic layer 108 is prevented from affecting the light passing through the liquid crystal layer 40, thereby facilitating the improvement of the light transmittance of the display panel and improving the display quality.
In some optional embodiments, please refer to fig. 1 and fig. 9 in combination, fig. 9 is another schematic cross-sectional structure diagram along a-a' direction in fig. 1, in this embodiment, the first passivation layer 103 includes a plurality of first bumps 1031, and a surface of the first passivation layer 103 away from the substrate 101 protrudes toward a side close to the second substrate 20 to form the first bumps 1031; the first bump 1031 forms a protruding structure 30 of the first substrate 10.
In this embodiment, it is explained that the plurality of protruding structures 30 on the side of the first substrate 10 close to the second substrate 20 may be fabricated by the first passivation layer 103, such that the surface of the first passivation layer 103 away from the substrate 101 protrudes toward the side close to the second substrate 20 to form a plurality of first bumps 1031 of the first passivation layer 103, and after the other films on the side of the first passivation layer 103 away from the substrate 101 are fabricated, a plurality of protruding structures 30 corresponding to the first bumps 1031 one to one may be formed on the side of the first substrate 10 close to the second substrate 20. Alternatively, a plurality of first bumps 1031 of the first passivation layer 103 may be formed by etching a surface of the first passivation layer 103 on a side away from the substrate 101, and a bending degree of the first bumps 1031 may be set according to requirements of the bump structure 30. In this embodiment, the protrusion structure 30 corresponding to the sub-pixel P is formed by directly protruding the surface of the existing first passivation layer 103 away from the substrate 101 toward the side close to the second substrate 20, so that the liquid crystal molecules of the liquid crystal layer 40 between the first substrate 10 and the second substrate 20 are arranged along the curved surface of the protrusion structure 30, and after the liquid crystal molecules of the liquid crystal layer 40 are deflected in the electric field, the liquid crystal molecules arranged along the curved surface are beneficial to controlling the light emitted from the backlight module to be emitted from the large viewing angle of the display panel 000, thereby increasing the oblique-view contrast of the display panel 000 and achieving the purpose of improving the display contrast of the whole display panel.
In some alternative embodiments, please refer to fig. 1 and fig. 10 in combination, fig. 10 is another schematic cross-sectional structure view along the direction a-a' in fig. 1, in this embodiment, the second passivation layer 104 includes a plurality of second bumps 1041, and a surface of the second passivation layer 104 on a side away from the substrate protrudes toward a side close to the second substrate 20 to form the second bumps 1041; the second bump 1041 forms a protruding structure 30 of the first substrate 10.
In this embodiment, it is explained that the plurality of protruding structures 30 on the side of the first substrate 10 close to the second substrate 20 may be manufactured by the second passivation layer 104, such that the surface of the second passivation layer 104 away from the substrate 101 protrudes toward the side close to the second substrate 20 to form a plurality of second bumps 1041 of the second passivation layer 104, and after the other films on the side of the second passivation layer 104 away from the substrate 101 are manufactured, a plurality of protruding structures 30 corresponding to the second bumps 1041 one to one may be formed on the side of the first substrate 10 close to the second substrate 20. Alternatively, a plurality of second bumps 1041 of the second passivation layer 103 may be formed by etching a surface of the second passivation layer 104 on a side away from the substrate 101, and a bending degree of the second bumps 1041 may be set according to a requirement of the bump structure 30. In this embodiment, the protrusion structure 30 corresponding to the sub-pixel P is formed by directly protruding the surface of the existing second passivation layer 104 away from the substrate 101 toward the side close to the second substrate 20, so that the liquid crystal molecules of the liquid crystal layer 40 between the first substrate 10 and the second substrate 20 are arranged along the curved surface of the protrusion structure 30, and after the liquid crystal molecules of the liquid crystal layer 40 are deflected in the electric field, the liquid crystal molecules arranged along the curved surface are beneficial to controlling the light emitted from the backlight module to be emitted from the large viewing angle of the display panel 000, thereby increasing the oblique-view contrast of the display panel 000 and achieving the purpose of improving the display contrast of the whole display panel.
In some alternative embodiments, please refer to fig. 11, where fig. 11 is a schematic plane structure diagram of a display device according to an embodiment of the present invention, and the display device 111 according to this embodiment includes the display panel 000 according to the above embodiment of the present invention. The embodiment of fig. 11 only takes a mobile phone as an example to describe the display device 111, and it should be understood that the display device 111 provided in the embodiment of the present invention may be another display device 111 with a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. The display device 111 provided in the embodiment of the present invention has the beneficial effects of the display panel 000 provided in the embodiment of the present invention, and specific reference may be made to the specific description of the display panel 000 in the above embodiments, which is not described herein again.
As can be seen from the above embodiments, the display panel and the display device provided by the present invention at least achieve the following beneficial effects:
the display panel provided by the invention can be a liquid crystal display panel, the display panel comprises a first substrate and a second substrate which are oppositely arranged, the display panel can comprise a plurality of sub-pixels which are arranged in an array, the sub-pixels can comprise a plurality of sub-pixels which display different colors, and therefore, the display function of a picture is realized through whether each sub-pixel is opened or not. The side, close to the second substrate, of the first substrate comprises a plurality of protruding structures, the protruding structures cover pixels in an orthographic projection mode of the first substrate, namely the area, in the orthographic projection mode, of one protruding structure to the first substrate is larger than or equal to the area of one sub-pixel, the protruding structures enable the first substrate in each sub-pixel range to form a curved surface (convex surface) design close to the side of the second substrate, liquid crystal molecules of a liquid crystal layer between the first substrate and the second substrate can be distributed along the curved surface (convex surface), and after the liquid crystal molecules of the liquid crystal layer deflect in an electric field, the liquid crystal molecules distributed along the curved surface (convex surface) are beneficial to controlling light emitted by a backlight module to be emitted from a large visual angle of a display panel, so that the oblique view contrast of the display panel can be increased, and the purpose of improving the display contrast of the whole display panel is achieved.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (11)
1. A display panel, comprising: the first substrate and the second substrate are oppositely arranged, and the first substrate is positioned on one side of the second substrate, which is far away from the light-emitting surface of the display panel;
the display panel comprises a plurality of sub-pixels arranged in an array, and one side of the first substrate, which is close to the second substrate, comprises a plurality of protruding structures;
the projection of the convex structure to the first substrate covers the sub-pixels.
2. The display panel of claim 1, wherein the height of the protrusion gradually decreases in a direction perpendicular to the light emitting surface of the display panel along a direction from the geometric center of the sub-pixel to the edge of the sub-pixel in a direction parallel to the light emitting surface of the display panel.
3. The display panel according to claim 1, wherein a surface of the protruding structure on a side close to the second substrate is a first surface, and the first surface is a curved surface structure.
4. The display panel according to claim 3,
the plurality of raised structures comprise a plurality of first raised structures and a plurality of second raised structures, and the plurality of second raised structures are arranged around the plurality of first raised structures;
the degree of curvature of the first surface of the second raised structure is greater than the degree of curvature of the first surface of the first raised structure.
5. The display panel according to claim 3,
the display panel comprises a display area and a non-display area arranged around the display area, and the bending degree of the first surface of the convex structure is gradually increased along the direction from the geometric center of the display area to the non-display area.
6. The display panel according to claim 1,
the first substrate at least comprises a substrate, an array layer, a first passivation layer and a second passivation layer which are sequentially stacked along the direction in which the first substrate points to the second substrate, and the first substrate further comprises a common electrode layer and a pixel electrode layer which are positioned on one side of the first passivation layer, which is far away from the substrate;
the array layer comprises a plurality of thin film transistors arranged in an array, the pixel electrode layer comprises a plurality of pixel electrodes arranged in an array, and the sub-pixels comprise the thin film transistors and the pixel electrodes which are electrically connected;
the projection of the convex structure to the first substrate covers the pixel electrode.
7. The display panel according to claim 6,
the first substrate further comprises a first organic layer, and the first organic layer is positioned on one side, close to the second substrate, of the pixel electrode layer;
the surface of one side, far away from the pixel electrode layer, of the first organic layer protrudes towards one side, close to the second substrate, to form the protruding structure.
8. The display panel according to claim 7, wherein a material of the first organic layer comprises a resin or a photoresist.
9. The display panel according to claim 6,
the first passivation layer comprises a plurality of first bumps, and the surface of one side of the first passivation layer, which is far away from the substrate, protrudes towards one side close to the second substrate to form the first bumps;
the first bump forms the protruding structure of the first substrate.
10. The display panel according to claim 6,
the second passivation layer comprises a plurality of second bumps, and the surface of the second passivation layer, which is far away from the substrate, protrudes towards the side close to the second substrate to form the second bumps;
the second bump forms the protruding structure of the first substrate.
11. A display device characterized by comprising the display panel according to any one of claims 1 to 10.
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