CN113009739A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113009739A CN113009739A CN202110300577.4A CN202110300577A CN113009739A CN 113009739 A CN113009739 A CN 113009739A CN 202110300577 A CN202110300577 A CN 202110300577A CN 113009739 A CN113009739 A CN 113009739A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
Abstract
The invention provides a display panel and a display device, the display panel comprises a first display area, the first display area comprises a plurality of sub-pixel units, a convex part is arranged in the first display area, the convex part is overlapped with the sub-pixel units in the orthographic projection of the display panel, the convex part is provided with a first side edge and a second side edge, a first driving electrode is arranged on the first side edge, a second driving electrode is arranged on the second side edge, in the same sub-pixel unit, the first driving electrode and the second driving electrode are alternately arranged, when different potential signals are applied to the first driving electrode and the second driving electrode, a horizontal electric field is formed between the first driving electrode and the second driving electrode, so that liquid crystal molecules in a liquid crystal layer rotate in the horizontal electric field, the liquid crystal molecules can not generate obvious periodical inclination and torsion arrangement, and the diffraction phenomenon generated by the periodical arrangement of light through the liquid crystal deflection is greatly reduced, thereby improving the imaging effect.
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
The rapid development of the display technology brings remarkable experience to the display of information in life and work of people. People are pursuing higher and higher the display panel screen, and at present, display equipment such as cell-phone, panel computer often openly need reserve the space for electron photosensitive devices such as leading camera commonly used, infrared sensing device, fingerprint identification device, consequently, the blind hole screen, bang screen, the water droplet screen that reserve the space for camera, sensing device in the display area of display panel are produced at the same time.
However, people have no stop when chasing the steps of the real full-screen, and more electronic photosensitive devices are integrated below or inside the screen, and the normal display of the display panel is not influenced. For example, a camera is disposed below the screen and a position corresponding to the camera is set as a high-light-transmission region. When the display is normal, the high-light-transmittance area can play a display role; when needing to take a picture or take a video, the camera shoots a picture or a video through the high light-transmitting area. However, since the light still needs to pass through the display panel and reach the camera, some problems still occur in the pictures or videos shot by the camera, for example, diffraction phenomenon occurs after the light passes through the display panel, which affects the display quality of the shot pictures and videos, and thus a solution is needed by those skilled in the art.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a display panel and a display device.
In a first aspect, the present application provides a display panel, which includes an array substrate and a color film substrate that are oppositely disposed, and a liquid crystal layer located between the array substrate and the color film substrate;
the display panel further comprises a first display area and a second display area at least partially surrounding the first display area;
the first display area is provided with a plurality of protruding parts, the first display area comprises a plurality of sub-pixel units which are arranged in an array mode, the first display area is vertical to the display panel, and the projections of the protruding parts are overlapped with the sub-pixel units;
the projection part is provided with a first side edge and a second side edge which are oppositely arranged, and the plane where the first side edge and the second side edge are located is intersected with the plane where the display panel is located;
the sub-pixel unit further comprises a first driving electrode and a second driving electrode, the first driving electrode and the second driving electrode are perpendicular to the display panel, the projection of the first driving electrode at least covers the projection of the first side edge of the protruding portion, the projection of the second driving electrode at least covers the projection of the second side edge of the strip-shaped protruding portion, and the projections of the first driving electrode and the second driving electrode are not overlapped;
in the sub-pixel unit, the first driving electrodes and the second driving electrodes are alternately arranged.
In a second aspect, the present application provides a display device including the display panel provided by the present application.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
according to the display panel and the display device provided by the application, the driving mode of IPS (in Plane switching) or FFS (fringe Field switching) is changed, and under the driving mode of IPS or FFS, a fringe electric Field is generated between a pixel electrode and a common electrode, and the electric Field comprises horizontal electric Field components and vertical electric Field components, so that the electric Field strength above the pixel electrode and between the pixel electrodes is inconsistent, the deflection degree of liquid crystal is inconsistent, and the transmittance is different; in the invention, a projection is arranged in a first display area, the first display area comprises a plurality of sub-pixel units, in the direction vertical to a display panel, the projection of the projection is overlapped with the sub-pixel units, the projection is provided with a first side edge and a second side edge, a first driving electrode is arranged on the first side edge, a second driving electrode is arranged on the second side edge, in the same sub-pixel unit, the first driving electrode and the second driving electrode are alternately arranged, when different potential signals are applied to the first driving electrode and the second driving electrode, a horizontal electric field is formed between the first driving electrode and the second driving electrode, in the driving mode, the first display area can display images, the rotation amplitude of liquid crystal molecules in the first display area is more consistent, so that the transmittance of the first display area is more uniform, and the transmittance of the first display area is higher than that in an IPS or FFS driving mode, the brightness of the first display area in the display mode can be improved, the transmittance of the first display area can be increased in the photographing mode, the light entering amount of the first display area is increased, and therefore the imaging effect of the light sensing element is improved; in addition, under the IPS and FFS driving modes, liquid crystal molecules are simultaneously acted by a horizontal electric field and a vertical electric field generated between a pixel electrode and a common electrode to generate obvious periodic inclined and twisted arrangement, and light is subjected to diffraction phenomenon generated by the periodic arrangement of liquid crystal deflection, so that the imaging effect of the light sensing element is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required in the description of the embodiments will be briefly introduced, the drawings described herein are provided to provide further understanding of the present invention and constitute a part of the present invention, and the exemplary embodiments and descriptions thereof of the present invention are provided for explaining the present invention and do not constitute a limitation of the present invention.
FIG. 1 is a schematic cross-sectional view of a prior art liquid crystal display panel under deflection;
fig. 2 is a schematic top view of a display panel according to an embodiment of the present invention;
FIG. 3 is a partially enlarged view of a first display region of the display panel of FIG. 2;
FIG. 4 is a schematic cross-sectional view taken along line A-A' of FIG. 3;
FIG. 5 is an enlarged view of another portion of the first display region of the display panel of FIG. 2;
FIG. 6 is a schematic cross-sectional view taken along line B-B' of FIG. 5;
FIG. 7 is a schematic enlarged view of a portion of the first display region of the display panel of FIG. 2;
FIG. 8 is a schematic enlarged partial view of a first display region of the display panel of FIG. 2;
FIG. 9 is a schematic cross-sectional view taken along section line C-C' of FIG. 8;
FIG. 10 is a schematic enlarged view of a portion of the first display region of the display panel of FIG. 2;
FIG. 11 is another schematic cross-sectional view taken along section line D-D' of FIG. 10;
FIG. 12 is a schematic enlarged view of a portion of the first display area of the display panel of FIG. 2;
FIG. 13 is a schematic cross-sectional view taken along section line D1-D1' of FIG. 12;
FIG. 14 is a schematic enlarged view of a portion of the first display area of the display panel of FIG. 2;
FIG. 15 is a schematic cross-sectional view taken along section line E-E' of FIG. 14;
FIG. 16 is a schematic enlarged view of a portion of the first display area of the display panel of FIG. 2;
FIG. 17 is a schematic cross-sectional view taken along section line F-F' of FIG. 16;
FIG. 18 is a schematic enlarged view of a portion of the first display area of the display panel of FIG. 2;
FIG. 19 is a further schematic cross-sectional view taken along section line A-A' of FIG. 3;
FIG. 20 is a further schematic cross-sectional view taken along section line B-B' of FIG. 5;
fig. 21 is a schematic top view of a display device according to an embodiment of the invention.
Detailed Description
The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to FIG. 1, FIG. 1 is a schematic cross-sectional view of a prior art liquid crystal display panel under deflection; in fig. 1, a display panel 1 provided by the conventional design includes an array substrate 11 and a color filter substrate 12 that are oppositely disposed, and a liquid crystal layer 13 that is located between the array substrate 11 and the color filter substrate 12, wherein a pixel electrode 112 and a common electrode 111 are disposed on the array substrate 11, the pixel electrode 112 is located on a side of the common electrode 111 facing the liquid crystal layer 13, the pixel electrode 112 and the common electrode 111 are arranged along a third direction Z, the third direction Z is a direction perpendicular to the display panel 1, and an FFS driving mode is formed between the pixel electrode 112 and the common electrode 111 for the liquid crystal layer 13, that is, a driving electric field E has two components, one is a third direction (vertical direction) component Ez and the other is a horizontal direction component, wherein the horizontal direction is parallel to a plane of the display panel 1, and is represented by a first direction component Ex, wherein the first direction X is an arrangement direction of the pixel electrode 112 on the display panel 1, also the extending direction of the scanning lines on the display panel, under the combined action of the two driving electric fields E, the liquid crystal molecules in the liquid crystal layer 13 will form different deflection states at different positions inside the display panel, when the driving electric field E has a component in the third direction Z, as seen in the direction of the driving electric field E in fig. 1, the liquid crystal molecules will tilt, the tilt angle is represented by the included angle a formed between the extension direction of the normal optical axis dc of the liquid crystal molecules and the first direction X, at the initial end E0 and the end E1 of the electric field E, because the component in the third direction Z is larger, the tilt angle a of the liquid crystal molecules is also larger, and the tilted liquid crystal molecules are arranged in an almost mirror image arrangement with respect to the middle of the driving electric field E; besides the inclination of the liquid crystal molecules, the liquid crystal molecules can be twisted to different degrees due to the variation of the intensity of the electric field in the horizontal direction, and these different deflection states are almost arranged in a mirror image with respect to the middle of the driving electric field E, when a pixel unit has a plurality of pixel electrodes 112, as shown in fig. 1, a pixel unit has two pixel electrodes 112, and the driving electric field formed between the two pixel electrodes 112 and the common electrode 111 will cause the liquid crystal molecules in the liquid crystal layer 13 to form a periodic deflection distribution in the pixel unit, when light is taken into the display panel from the backlight and passes through the liquid crystal layer 13, it is equivalent to entering a liquid crystal grating formed by the periodically deflected liquid crystal molecules, since the sub-pixel units included in the display panel are arranged in an array, when light passes through the sub-pixel units, the diffraction phenomenon occurs, and the diffraction degree of light is increased due to the periodically arranged liquid crystal grating in the sub-pixel units, therefore, more obvious diffraction spots appear on the image, and the image quality is reduced. The electric field intensity above the pixel electrode 112 and between the pixel electrodes 112 is inconsistent, which causes inconsistent liquid crystal deflection degree, thereby causing the difference of transmittance in pixel units; in the existing design, there is also an IPS driving mode, where projections of the pixel electrodes 112 and the common electrodes 111 in a direction perpendicular to the display panel are alternately arranged, and an electric field formed between the two electrodes also has components in the horizontal direction and the third direction Z, and a relatively severe diffraction phenomenon still exists.
Based on the above-mentioned problems, the present invention provides a display panel, as shown in fig. 2 to 4, fig. 2 is a schematic top view of the display panel according to an embodiment of the present invention, fig. 3 is a schematic partially enlarged view of a first display region of the display panel of fig. 2, and fig. 4 is a schematic cross-sectional view along a sectional line a-a' of fig. 3; as shown in fig. 2, the display panel 2 includes a first display area 200 and a second display area 201 at least partially surrounding the first display area 200, fig. 2 only illustrates the first display area 200 with a rectangular shape, and does not limit the shape of the first display area 200, in some other embodiments of the present invention, the first display area 200 may also be embodied with other shapes, such as a rounded rectangle, a circle, an ellipse, and the like, which is not specifically limited by the present invention. As shown in fig. 3 to 4, the display panel 2 includes an array substrate 21 and a color filter substrate 22 which are oppositely disposed, and a liquid crystal layer 25 located between the array substrate 21 and the color filter substrate 22.
In the first display area 200, a plurality of protrusions 23 and a plurality of sub-pixel units P are disposed, and in a direction perpendicular to the display panel 2, a projection of the protrusion 23 overlaps the sub-pixel units P, as shown in fig. 3-4, the protrusion 231 may be completely located within the sub-pixel unit P, and the protrusion 232 may also be partially located within the sub-pixel unit P, i.e. between two adjacent pixel units P in the same row.
A first side B1 and a second side B2 are oppositely arranged on one protruding portion 23, and a plane where the first side B1 is located and a plane where the second side B2 is located intersect with a plane where the display panel 2 is located, that is, a plane where the first side B1 and the second side B2 of the protruding portion 23 are located may be inclined to the plane where the display panel 2 is located at a certain angle, or may be perpendicular to the plane where the display panel 2 is located.
In the sub-pixel unit P, including the first driving electrode 241 and the second driving electrode 242, in the direction perpendicular to the display panel 2, the projection of the first driving electrode 241 at least covers the projection of the first side B1 of the protruding portion 23, and the projection of the second driving electrode 242 at least covers the projection of the second side B2 of the protruding portion 23; the first driving electrode 241 may be disposed only on the surface of the first side B1 of the protrusion 23, or may be disposed on a part of the surface S1 of the protrusion 23 facing the liquid crystal layer 25, the first side B1, and a part of the surface S2 of the material between two adjacent protrusions 23, and similarly, the second driving electrode 242 may be disposed in the same manner as the first driving electrode 241, and the second driving electrode 242 may be disposed in the same manner or different from the first driving electrode 241 under the condition that the above conditions are satisfied, and this is not required, and may be selected according to the adhesion between the electrode material and the protrusion 23, if the adhesion between the two is good, the driving electrode 24 may be disposed only on the side of the protrusion 23, and if the adhesion between the two is poor, the driving electrode 24 may increase the disposition area, thereby increasing the adhesion between the protrusion 23, and an interlayer diaphragm layer may be disposed on the protrusion 23 and between the driving electrode 24, thereby increasing the adhesiveness of the driving electrode 24; in the direction perpendicular to the display panel 2, the projections of the first driving electrode 241 and the second driving electrode 242 do not overlap, and the first driving electrode 241 and the second driving electrode 242 are alternately arranged in the sub-pixel unit P.
It should be noted that, when the protruding portion 232 is located in the sub-pixel unit P, the driving electrode 24 on the protruding portion 23 is made of a transparent material, such as ito (indium Tin oxide), so that it can be ensured that light transmitted through the sub-pixel unit P is not blocked; when the protruding portion 231 is located between two adjacent sub-pixel units P, the driving electrode 24 on the protruding portion 23 can be made of a transparent material or a metal material, because a black matrix is usually disposed between two adjacent sub-pixel units P for shielding, and this area is usually opaque.
Optionally, directions of the protrusions 23 in any two sub-pixel units P may be the same or different, so that only the first driving electrode 241 and the second driving electrode 242 of the same sub-pixel unit P are defined to be alternately arranged, at this time, most of the electric fields in the sub-pixel unit P in the third direction Z are the horizontal electric fields E 'generated between the first driving electrode 241 and the second driving electrode 242, and the electric fields in the third direction Z are very weak, most of the liquid crystal molecules are affected by the horizontal electric fields E' to deflect, and the deflection degrees are relatively consistent, and a periodic inclined and twisted arrangement does not occur, so that a phenomenon that light transmitted through the display panel is diffracted is greatly improved; in addition, under this drive mode, first display area still can show the image, the liquid crystal molecule rotation range of first display area is more unanimous, thereby the transmissivity of first display area is more even, and the transmissivity of first display area compares first display area and wants the high transmissivity under the drive mode of IPS or FFS, not only can promote under the display mode, the luminance of first display area, can also under the mode of shooing, increase the transmissivity of first display area, the improvement gets into the light inlet volume that sets up in first display area, thereby improve the formation of image effect of light sense element.
Alternatively, as shown in FIGS. 5 to 6, FIG. 5 is another enlarged partial schematic view of the first display region of the display panel of FIG. 2, and FIG. 6 is a schematic cross-sectional view taken along the sectional line B-B' of FIG. 5; in fig. 5, the sub-pixel unit P includes an opening area OA and a non-opening area NA, where the non-opening area NA refers to a portion of the sub-pixel unit P except the opening area OA, the protrusion 23 is located in the non-opening area NA, the non-opening area NA usually has a light blocking layer to block light in the display panel 2, and the opening area OA is used to transmit light, and the protrusion 23 is located in the non-opening area NA to ensure uniform light transmission in the opening area and uniform display brightness of the sub-pixel unit.
When the protrusion 23 is located at the non-opening area NA, the voltage applied to the first driving electrode 241 on the protrusion 23 is V1, the voltage applied to the second driving electrode 242 is V2, the voltage difference between the voltages V1 and V2 is Δ V, 8V ≦ Δ V ≦ 40V, when the voltage difference Δ V between the two driving electrodes 24 reaches 8V, the electric field generated between the two driving electrodes 24 can drive the liquid crystal molecules in the region of about 5 μm along the first direction X, when the voltage difference Δ V between the two driving electrodes 24 reaches 40V, the electric field generated between the two driving electrodes 24 can drive the liquid crystal molecules in the region of about 30 μm along the first direction X, and because the size of the sub-pixel cell P along the first direction X is usually 10-35 μm, which includes the size of the opening area OA and the non-opening area NA along the first direction X, the size of the non-opening area NA along the first direction is removed, the size of the opening area OA along the first direction is about 5 to 30 μm, and if the voltage difference Δ V between the two driving electrodes 24 is not large enough, the liquid crystal molecules are deflected to a limited extent, thereby affecting the light transmittance of the opening area OA; when the voltage difference Δ V between the two driving electrodes 24 satisfies 8V ≦ Δ V ≦ 40V, the liquid crystal molecules may be sufficiently deflected by adjusting the voltage difference Δ V between the voltages V1 and V2 according to the size of the sub-pixel unit P in the first direction X, so that the light transmittance of the opening area may be maximized.
Optionally, with reference to fig. 5, the vertical distance between the first side B1 and the second side B2 of two adjacent protrusions 23 is D, D is greater than or equal to 5 μm and less than or equal to 30 μm, when the first driving electrode 241 and the second driving electrode 242 are located in the non-aperture area NA of the sub-pixel unit P, and the driving voltage difference Δ V between the first driving electrode 241 and the second driving electrode 242 is greater than or equal to 8V and less than or equal to Δ V and less than or equal to 40V, the driving voltage difference can drive the OA liquid crystal molecules in the aperture area to deflect within a range of 5-30 μm.
Optionally, referring to fig. 3 and fig. 7, fig. 7 is a schematic partial enlarged view of the first display area of the display panel of fig. 2; the display panel 2 is further provided with a scanning line 26, an extending direction of the scanning line 26 is a first direction X, an included angle between an extending direction T of the protruding portion 23 and the first direction X is θ, 0 ° < θ < 90 °, as shown in fig. 3, an included angle between the extending direction T of the protruding portion 23 and the first direction X is 10 °, as shown in fig. 7, an included angle between the extending direction T of the protruding portion 23 and the first direction X is 3 °; since the liquid crystal alignment direction of the display panel is usually the extending direction of the scan lines 26, or perpendicular to the scan lines 26, that is, the alignment direction is the first direction X or the second direction Y, the extending direction of the protrusions 23 is prevented from being parallel to the first direction X and the second direction Y, that is, the extending direction of the driving electrodes 24 on the protrusions 23 is prevented from being parallel to the first direction X and the second direction Y, so as to prevent the electric field E between the driving electrodes from being parallel to or perpendicular to the alignment direction, thereby preventing the liquid crystal molecules from being hindered from deflecting.
Alternatively, under the condition that the extending directions of the protruding portions 23 satisfy a certain condition, the extending directions T of the protruding portions 23 on the display panel 2 are parallel, that is, the extending directions of the protruding portions 23 on the display panel 2 are all the same, as shown in fig. 3 and 7, the extending directions T of the protruding portions 23 are all along the same direction, and by the uniform design of the protruding portions 23, the display of the display panel 2 can be uniform, and the preparation of the protruding portions 23 and the driving electrodes 24 is also facilitated.
Optionally, referring to fig. 3 and fig. 7, the display panel 2 is further provided with a data line 27, an included angle between the data line 27 and the extending direction of the scan line 26 is phi, where 0 ° < phi < 90 °, in fig. 3, the extending direction T of the protruding portion 23 is the same as the extending direction of the data line 27, and in fig. 7, the extending direction T of the protruding portion 23 is different from the extending direction of the data line 27; the extending direction T of the protruding portion 23 is the same as the extending direction of the data line 27, so that the area of the non-display area NA of the sub-pixel unit P is relatively small, and the sub-pixel unit P has a large aperture ratio, thereby ensuring the transmittance of the display panel 2 and the brightness of the display panel 2.
Alternatively, as shown in fig. 8 to 9, fig. 8 is a further enlarged partial schematic view of the first display region of the display panel of fig. 2, and fig. 9 is a schematic cross-sectional view taken along the sectional line C-C' of fig. 8; the sub-pixel units P in the first display area 200 further include a common electrode 28, the common electrode 28 is located on a side of the first driving electrode 241 and the second driving electrode 242 away from the liquid crystal layer 25, a horizontal electric field E ' is formed between the first driving electrode 241 and the second driving electrode 242, and meanwhile, a fringe electric field Ef, i.e., an FFS mode driving electric field, is formed between the first driving electrode 241, the second driving electrode 242 and the common electrode 28, the increased FFS mode driving electric field Ef has a weaker strength than the horizontal electric field E ', and has a weaker influence on liquid crystal deflection than the horizontal electric field E ', but the increased driving electric field can increase the light transmittance of the opening area OA, thereby increasing the brightness of the display panel 2.
Alternatively, as shown in FIGS. 8 to 11, FIG. 10 is a schematic enlarged view of a portion of the first display region of the display panel of FIG. 2, and FIG. 11 is a schematic cross-sectional view taken along the sectional line D-D' of FIG. 10; in fig. 8 to 9, the common electrode 28 is located on the side of the protrusion 23 away from the liquid crystal layer 13, while in fig. 10 to 11, the common electrode 28 is located on the side of the protrusion 23 facing the liquid crystal layer 13, and the common electrode 28 is located between the protrusion 23 and the first and second driving electrodes 241 and 242, so as to increase the intensity of the fringe electric field Ef formed between the first and second driving electrodes 241 and 242 and the common electrode 28, and thus increase the light transmittance of the opening area OA, thereby increasing the brightness of the display panel 2.
Alternatively, as shown in FIGS. 10 to 13, FIG. 12 is a schematic partial enlarged view of the first display region of the display panel of FIG. 2, and FIG. 13 is a schematic sectional view taken along the sectional line D1-D1' in FIG. 12; when the common electrode 28 is located between the protrusion 23 and the first and second driving electrodes 241, 242, the orthographic projection of the common electrode 28 on the display panel 2 at least covers the orthographic projection of the first side B1 and the second side B2 of the protrusion 23 on the display panel 2, that is, the common electrode 28 may be only disposed on the first side B1 and the second side B2 of the protrusion 23, or as shown in fig. 10 to 11, the orthographic projection of the common electrode 28 on the display panel 2 covers the surface S1 of the protrusion 23 facing the liquid crystal layer 13, and the orthographic projection of the first side B1 and the second side B2 on the display panel 2 even covers the material surface S2 between two adjacent protrusions 23; as shown in FIGS. 12-13, the orthographic projection of the common electrode 28 on the display panel 2 covers a part of the surface S1 of the protrusion 23 facing the liquid crystal layer 13, the orthographic projection of the first side edge B1 and the second side edge B2 on the display panel 2, and the material surface S2 between the two protrusions 23; since the orthographic projections of the first driving electrode 241 and the second driving electrode 242 on the display panel 2 at least cover the orthographic projections of the first side edge B1 and the second side edge B2 of the protruding portion 23 on the display panel 2, it is only necessary to ensure that the driving electrode 24 overlaps the orthographic projection of the common electrode 28 on the display panel 2, so that the sub-pixel units P in the first display area 200 can be ensured to have an effective FFS driving electric field, thereby increasing the light transmittance of the opening area OA and increasing the brightness of the display panel 2.
As described above, with continued reference to fig. 12 to 13, when the common electrode 28 is located between the protrusion 23 and the first and second driving electrodes 241 and 242, and the included angle between the extending direction T of the protrusion 23 and the extending direction of the scan line 26 is θ, 0 ° < θ < 90 °, optionally, the common electrode 28 has a notch F on the first surface S1 of the protrusion 23, wherein the first surface S1 is the surface of the protrusion facing the liquid crystal layer, that is, the common electrode 28 does not completely cover the first surface S1 of the protrusion 23, but is broken on the first surface S1, and the extending direction of the notch F is also consistent with the extending direction T of the protrusion 23, a gap is etched in the common electrode 28 on the first surface S1 of the protrusion 23, and the extending direction of the notch F is consistent with the protrusion 23, under the condition that the sub-pixel unit P in the first display area 200 is ensured to have an effective FFS driving electric field, it is avoided that when the height of the projection 23 in the direction perpendicular to the display panel 2 is large, the common electrode 28 may be irregularly broken at the first surface S1 of the projection 23, thereby avoiding the unevenness of the film layer.
Alternatively, in the extending direction of the vertical slit F, that is, the extending direction T of the protrusion 23, the slit F has a third side b3 and a fourth side b4 oppositely arranged, and then in the direction perpendicular to the display panel 2, the vertical distance between the third side b3 and the projection of the first side b1 of the first driving electrode 241 is g1, and the vertical distance between the fourth side b4 and the projection of the second side b2 of the second driving electrode 242 is g2, then 0 ≦ g1 ≦ 1, and 0 ≦ g2 ≦ 1. As shown in fig. 12, the third side b3 of the notch F is right of the first side b1 of the first driving electrode 241, the fourth side b4 of the notch F is left of the second side b2 of the second driving electrode 242, i.e. the common electrode 28 is extended a distance from the driving electrode 24, in another case, the third side b3 of the notch F is left of the first side b1 of the first driving electrode 241, and the fourth side b4 of the notch F is right of the second side b2 of the second driving electrode 242, i.e. the common electrode 3528 is retracted a distance from the driving electrode 24, because in actual cases, when the third side b3 and the fourth side b4 of the notch F of the common electrode 28 and the first side b1 of the first driving electrode 241 and the second side b2 of the second driving electrode 242 are arranged to be flush, due to the misalignment between the film layers during the process, the driving electrode 24 and the common electrode 28 are misaligned, the deviation is in the range of 0 to 1 μm.
Alternatively, as shown in FIGS. 14 to 15, FIG. 14 is a schematic partial enlarged view of the first display region of the display panel of FIG. 2, and FIG. 15 is a schematic sectional view taken along the sectional line E-E' of FIG. 14; the sub-pixel unit P of the first display area 200 includes the opening area OA and the non-opening area NA, and the orthographic projection of the common electrode 28 on the display panel 2 does not overlap the opening area OA, that is, there is no common electrode 28 in the opening area OA of the sub-pixel unit P of the first display area 200, and there is no common electrode 28 in the opening area OA of the sub-pixel unit P, so that the light passing through the opening area OA does not pass through the common electrode 28, thereby improving the light transmittance of the opening area OA and increasing the brightness of the display panel 2.
Alternatively, the display panel 2 includes a passivation layer, and the protruding portion 23 is formed by the passivation layer, where the passivation layer may include an insulating layer, a planarization layer, and the like, and the material may be an inorganic material such as SiO/SiN, and may also be an organic material, which is not limited in this application.
Alternatively, as shown in fig. 5 to 6, the protrusion 23 may be located on one side of the array substrate 21, and when the protrusion 23 is located on one side of the array substrate 21, as shown in fig. 16 to 17, fig. 16 is a further enlarged partial schematic view of the first display region of the display panel of fig. 2, and fig. 17 is a schematic cross-sectional view along a cross-sectional line F-F' in fig. 16; the sub-pixel units P of the first display region 200 include a thin film transistor Tp including a gate T1, a source T2 and a drain T3, the first driving electrode 241 is electrically connected to the drain T3 through the first via K1, when the thin film transistor Tp is turned on, a data signal is transmitted from the source T2 to the drain T3 and then to the first driving electrode 241, and the data signal is transmitted to the first driving electrode 241 by controlling the thin film transistor Tp, so that each sub-pixel unit P can be effectively controlled to realize display of different gray-scale luminance.
Optionally, with reference to fig. 16 to 17, the display panel 2 includes a driving signal line (not shown), the driving signal line is connected to a driving signal, the second driving electrode 242 is electrically connected to the driving signal line through the second via K2, the driving signal may be a fixed signal, the driving signal is transmitted to the second driving electrode 242 through the driving signal line, the driving signal line may be disposed at the same layer as the data line 27, the scanning line 26, or the light-shielding metal layer (not shown), and the application of the present invention is not limited thereto. When the sub-pixel unit P needs to be lit, different voltages are respectively applied to the first driving electrode 241 and the second driving electrode 242, so that a voltage difference is formed between the two electrodes, and liquid crystal molecules are deflected; when the sub-pixel unit P does not need to be lit, the same voltage is applied to the first driving electrode 241 and the second driving electrode 242, so that no voltage difference is formed between the two, and the liquid crystal molecules are not deflected.
Alternatively, as shown in fig. 18, fig. 18 is a further partially enlarged schematic view of the first display region of the display panel of fig. 2, the sub-pixel unit P of the first display region 200 includes two thin film transistors Tp, respectively, a thin film transistor Tp1 and a thin film transistor Tp2, the thin film transistor Tp1 includes a gate electrode T11, a source electrode T12 and a drain electrode T13, the thin film transistor Tp2 includes a gate electrode T21, a source electrode T22 and a drain electrode T23, the first driving electrode 241 is electrically connected to the drain electrode T13 through a first via K1, the second driving electrode 242 is electrically connected to the drain electrode T23 through a second via K2, when the thin film transistor Tp1 is turned on, the first data signal is transferred from the source electrode T12 to the drain electrode T13 and then to the first driving electrode 241, when the thin film transistor Tp2 is turned on, the second data signal is transferred from the source electrode T22 to the drain electrode T5 and then to the second driving electrode 242, and then the second driving electrode 242, the data signal is transferred to the first driving electrode 242 by controlling the thin film transistors Tp1 and 2, the sub-pixel unit P can be controlled more accurately to realize the display of different gray scale brightness, so that the display brightness is more uniform.
Alternatively, as shown in fig. 19 and fig. 19 is another schematic cross-sectional view taken along the sectional line a-a' in fig. 3, the protruding portion 23 may be further located on one side of the color filter substrate 22, when the protruding portion 23 is located on the color filter substrate 22 side, the first driving electrode 241 and the second driving electrode 242 are also located on the color filter substrate 22 side, a driving signal line is required to be added on one side of the color filter substrate 22, the first driving electrode 241 and the second driving electrode 242 may be electrically connected to different driving signal lines through different via holes, respectively, a drain signal line is disposed on a drain of the thin film transistor of the array substrate 21, in the frame area of the display panel 2, the driving signal lines are electrically connected to the drain signal lines of the thin film transistors of the array substrate 21, for example, the frame area can be electrically connected through different gold balls, or one of the driving signal lines may also be directly electrically connected to a driving signal of the display panel 2. Optionally, the protruding portions 23 may also be simultaneously located on the array substrate 21 and the color filter substrate 22, and the protruding portions 23 on the two substrates are orthographically overlapped on the display panel 2.
As described above, referring to fig. 5 to 6, the display panel 2 includes the array substrate 21 and the color filter substrate 22 which are oppositely disposed, in the direction perpendicular to the display panel 2, the distance between the array substrate 21 and the color filter substrate 22 is H1, the height of the protrusion 23 is H, H1 is the box thickness of the display panel 2, then H is more than or equal to H1 and is more than or equal to 0.3 μm and is less than or equal to H3 μm, that is, the height of the protrusion 23 is at least 0.3 μm and cannot exceed the box thickness of the display panel 2, the protrusion 23 must have a certain height, so that a stable horizontal electric field E' can be formed between the first driving electrode 241 and the second driving electrode 242, the higher the height H of the protrusion 23 in the set range is, the greater the electric field intensity between the array substrate 21 and the color filter substrate 22 is increased, and the distribution in the space is more balanced, so that the rotation of the liquid crystal molecules 25 in the pixel unit is more uniform, and the, however, the protruding portion 23 cannot exceed the box thickness of the display panel 2, otherwise the array substrate 21 and the color filter substrate 22 cannot be attached normally.
When the height H of the bump 23 is H1, that is, the height of the bump 23 is the box thickness of the display panel 2, the support pillars 29 do not need to be prepared on the array substrate 21 or the color filter substrate 22 side, when the height H of the bump 23 is less than H1, that is, the height of the bump 23 is less than the box thickness of the display panel 2, the support pillars 29 need to be prepared on the substrate on the opposite side of the bump 23, and the orthographic projection of the support pillars 29 on the display panel 2 at least overlaps the orthographic projection of the bump 23 on the display panel 2, that is, the support pillars 29 and the bump 23 interact to support the display panel 2, the height of the support pillars 29 is H2, the total thickness of the electrodes on the bump 23 is H3, H2-H1-H3, if the bump 23 is located on the array substrate 21, the support pillars 29 are located on the color filter substrate 22 side, if the bump 23 is located on the color filter substrate 22, the array substrate 21 is provided with a supporting pillar 29 on one side, and the supporting pillar 29 may be made of a metal material, an organic material or an inorganic material, which is not limited in the present application.
Optionally, with continued reference to fig. 5, the width of the protruding portion 23 in the direction perpendicular to the extending direction T is W, W is 2 μm ≦ 9 μm, the length of the protruding portion 23 in the extending direction is L, L is 30 μm ≦ 85 μm; in the process, the width W of the protruding portion 23 in the direction perpendicular to the extending direction T thereof, that is, the limit width of the line width of the protruding portion 23 is 2 μm, because the width W is less than 2 μm, the phenomenon that the protruding portion 23 is broken and the line width is not uniform may occur in the process; the line width of the protruding portion 23 is set to be less than or equal to 9 μm, in order to ensure that the protruding portion 23 has enough distribution quantity in the first display region 200, thereby ensuring the intensity of the horizontal electric field and ensuring the brightness of the display panel 2; similarly, the sub-pixel units P have a dimension along the first direction X of 10-35 μm, and a dimension along the extending direction of 30-85 μm, so the length L of the protrusions 23 along the extending direction T is 30-85 μm.
Optionally, referring to fig. 3 to 4, on the same protrusion 23, in the extending direction T of the vertical protrusion 23, the first driving electrode 241 has a first side b1, the second driving electrode 242 has a second side b2, the first side b1 is adjacent to the second side b2, the vertical distance between the first side b1 and the second side b2 is G, and G is 2 μm ≦ 4.5 μm; since the orthographic projections of the first driving electrodes 241 and the second driving electrodes 242 on the display panel 2 do not overlap, in the process, the limit width of the gap between the driving electrodes 24 is set to 2 μm, which can ensure that no short circuit occurs between the driving electrodes 24, and since the width W of the protruding portion 23 in the direction perpendicular to the extending direction T, that is, the line width is 9 μm at most and the gap between the driving electrodes 24 is 4.5 μm at most, which can ensure that the orthographic projections of the first driving electrodes 241 and the second driving electrodes 242 on the display panel 2 cover at least half of the first surface S1 of the protruding portion 23, thereby ensuring that the driving electrodes 24 and the protruding portion 23 have better adhesion.
Alternatively, as shown in fig. 20, fig. 20 is a schematic cross-sectional view taken along the cross-sectional line B-B' in fig. 5, the sub-pixel unit P in the first display area 200 includes a color sub-pixel unit P1 and a high-transmittance sub-pixel unit P2, wherein the color sub-pixel unit P1 may include a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit, and the high-transmittance sub-pixel unit P2 may include a white sub-pixel unit or a yellow sub-pixel unit, which is not limited in the present application. The electrode structure proposed in the present application can be applied only to the high-transmittance color sub-pixel cell P2, or to the color sub-pixel cell P1 and the high-transmittance sub-pixel cell P2.
As shown in fig. 21, fig. 21 is a schematic top view of a display device according to an embodiment of the present invention; an embodiment of the present invention further provides a display device 3, where the display device 3 includes a display terminal product such as a smart phone, a flat panel display device, a notebook display device, and a vehicle-mounted display device, and the display device 3 includes the display panel 2, and further includes an imaging device (not shown in the figure), where the orthographic projection of the imaging device on the display panel 2 is overlapped with the first display area 200, and beneficial effects produced by the display device 3 are as described in the foregoing embodiment, and are not described herein again.
In summary, in the display panel and the display device provided by the present invention, the protrusion is disposed in the first display region, and the first display region includes a plurality of sub-pixel units, in the direction perpendicular to the display panel, the projection of the protrusion overlaps the sub-pixel units, the protrusion has a first side and a second side, the first side is disposed with the first driving electrode, and the second side is disposed with the second driving electrode, in the same sub-pixel unit, the first driving electrode and the second driving electrode are alternately disposed, so that when different electric potential signals are applied to the first driving electrode and the second driving electrode, a horizontal electric field is formed between the first driving electrode and the second driving electrode, so that liquid crystal molecules in the liquid crystal layer rotate in the horizontal electric field, thereby preventing the liquid crystal molecules from generating obvious periodic tilt and twist arrangement in the IPS or FFS driving mode, greatly reducing the diffraction phenomenon generated by the periodic arrangement of the light through the liquid crystal deflection, thereby improving the imaging effect.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (22)
1. A display panel, comprising:
the liquid crystal display panel comprises an array substrate, a color film substrate and a liquid crystal layer, wherein the array substrate and the color film substrate are oppositely arranged, and the liquid crystal layer is positioned between the array substrate and the color film substrate;
a first display area and a second display area at least partially surrounding the first display area;
the first display area is provided with a plurality of protruding parts, the first display area comprises a plurality of sub-pixel units which are arranged in an array mode, the first display area is vertical to the display panel, and the projections of the protruding parts are overlapped with the sub-pixel units;
the projection part is provided with a first side edge and a second side edge which are oppositely arranged, and the plane where the first side edge and the second side edge are located is intersected with the plane where the display panel is located;
the sub-pixel unit further comprises a first driving electrode and a second driving electrode, the first driving electrode and the second driving electrode are perpendicular to the display panel, the projection of the first driving electrode at least covers the projection of the first side edge of the protruding portion, the projection of the second driving electrode at least covers the projection of the second side edge of the strip-shaped protruding portion, and the projections of the first driving electrode and the second driving electrode are not overlapped;
in the sub-pixel unit, the first driving electrodes and the second driving electrodes are alternately arranged.
2. The display panel according to claim 1, wherein the sub-pixel unit includes an open area and a non-open area, and the protrusion portion is located in the non-open area.
3. The display panel of claim 2, wherein the voltage difference between the voltages received by the first driving electrode and the second driving electrode is Δ V, 8V ≦ Δ V ≦ 40V.
4. The display panel according to claim 3, wherein a perpendicular distance between the first side and the second side of two adjacent convex portions is D, and D is greater than or equal to 5 μm and less than or equal to 30 μm.
5. The display panel according to claim 1, wherein the display panel is provided with a scanning line, and an angle between an extending direction of the convex portion and an extending direction of the scanning line is θ, and 0 ° < θ < 90 °.
6. The display panel according to claim 5, wherein the extending directions of the convex portions are parallel.
7. The display panel according to claim 6, wherein the display panel is provided with data lines, and when an angle between an extending direction of the data lines and an extending direction of the scan lines is Φ, 0 ° < Φ < 90 °, an extending direction of each of the convex portions coincides with an extending direction of the data lines.
8. The display panel according to claim 1, wherein the sub-pixel unit further comprises a common electrode on a side of the first and second driving electrodes facing away from the liquid crystal layer.
9. The display panel according to claim 8, wherein the common electrode is located on a side of the projection portion facing the liquid crystal layer.
10. The display panel according to claim 9, wherein a projection of the common electrode covers at least projections of the first side and the second side of the convex portion, perpendicular to the display panel.
11. The display panel according to claim 10, wherein the display panel is provided with a scanning line, an included angle between an extending direction of the protrusion and an extending direction of the scanning line is θ, 0 ° < θ < 90 °, the protrusion has a first surface, the first surface is a surface of the protrusion facing the liquid crystal layer side, the common electrode has a slit perpendicular to the display panel, a projection of the slit overlaps with the first surface, and the extending direction of the slit coincides with the extending direction of the protrusion.
12. The display panel of claim 11, wherein perpendicular to the extending direction of the slit, the slit has a third edge and a fourth edge disposed opposite to each other, perpendicular to the display panel, the perpendicular distance between the projection of the third edge and the projection of the first edge of the first driving electrode is g1, the perpendicular distance between the projection of the fourth edge and the projection of the second edge of the second driving electrode is g2, 0 ≦ g1 ≦ 1, and 0 ≦ g2 ≦ 1.
13. The display panel according to claim 8, wherein the sub-pixel unit includes an opening area, and the common electrode does not overlap with the opening area in an orthogonal projection of the display panel.
14. The display panel according to claim 1, wherein the display panel comprises a passivation layer, and wherein the protrusion is formed of the passivation layer.
15. The display panel of claim 1, wherein the protrusion is located on one side of the array substrate.
16. The display panel according to claim 15, wherein the sub-pixel unit comprises a thin film transistor including a gate electrode, a source electrode, and a drain electrode, and the first driving electrode is electrically connected to the drain electrode through a first via hole.
17. The display panel according to claim 16, wherein the display panel comprises a driving signal line to which a driving signal is connected, and wherein the second driving electrode is electrically connected to the driving signal line through a second via.
18. The display panel of claim 1, wherein a distance between the array substrate and the color filter substrate is H1, a height of the protrusion on a plane perpendicular to the display panel is H, and H is greater than or equal to 0.3 μm and less than or equal to H1.
19. The display panel according to claim 1, wherein the width of the convex portions in the direction perpendicular to the respective extending directions thereof is W, 2 μm W ≦ 9 μm, and the length of the convex portions in the respective extending directions thereof is L, 30 μm ≦ L ≦ 85 μm.
20. The display panel according to claim 19, wherein the first driving electrode has a first edge and the second driving electrode has a second edge, the first edge and the second edge are adjacent to each other, and a vertical distance between the first edge and the second edge is G, and G is greater than or equal to 2 μm and less than or equal to 4.5 μm.
21. The display panel of claim 1, wherein the sub-pixel units comprise a color sub-pixel unit and a high-transmittance sub-pixel unit.
22. A display device comprising the display panel according to any one of claims 1 to 21.
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