Liquid crystal display panel and manufacturing method, liquid crystal display device

Abstract

The disclosed embodiment provides a liquid crystal display panel, which includes a color filter substrate, an array substrate, a liquid crystal layer and a plurality of liquid crystal drive units, wherein the color filter substrate and the array substrate are relatively connected, and the liquid crystal layer and the plurality of liquid crystal drive units are located between the color filter substrate and the array substrate. The plurality of liquid crystal drive units are arranged in an array, and the liquid crystal drive unit includes at least one pair of drive electrodes, each pair of drive electrodes includes a first electrode and a second electrode relative to each other, and the first electrode and the second electrode relative to each other are used to drive the liquid crystal between the first electrode and the second electrode. The arrangement direction of the relative first electrode and the second electrode is parallel to the bearing surface of the array substrate, and the relative surfaces of the first electrode and the second electrode both intersect with the bearing surface of the array substrate. The disclosed embodiment can improve the poor efficiency of liquid crystal.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the field of display technology, and in particular to a liquid crystal display panel and a manufacturing method thereof, and a liquid crystal display device. Background Art

[0002] Liquid crystal display panel is a common display panel, which has the advantages of low manufacturing cost and simple manufacturing process, and occupies a large market share in the field of display technology.

[0003] In the related art, the liquid crystal display panel includes a color filter substrate and an array substrate facing each other, and a liquid crystal layer and a plurality of electrodes located between the array substrate and the color filter substrate. The plurality of electrodes include a plurality of electrode pairs, and each electrode pair includes two electrodes with opposite polarities. The plurality of electrodes are arranged on the bearing surface of the array substrate, and the plurality of electrodes are located in the same plane and the plane is parallel to the bearing surface of the array substrate. The two electrodes in the electrode pair form an electric field, and the electric field is used to control the deflection of the corresponding liquid crystal.

[0004] However, the electric field lines of the electric field formed by this electrode pair are parabolic and the electric field strength is weak, resulting in low liquid crystal efficiency. Summary of the invention

[0005] The present disclosure provides a liquid crystal display panel and a manufacturing method, and a display device, which can improve the poor efficiency and flicker of liquid crystal.

[0006] On the one hand, a liquid crystal display panel is provided, which includes a color filter substrate, an array substrate, a liquid crystal layer and a plurality of liquid crystal driving units, wherein the color filter substrate and the array substrate are relatively connected, and the liquid crystal layer and the plurality of liquid crystal driving units are located between the color filter substrate and the array substrate; the plurality of liquid crystal driving units are arranged in an array, and the liquid crystal driving unit includes at least one pair of driving electrodes, each pair of the driving electrodes includes a first electrode and a second electrode relative to each other, and the first electrode and the second electrode relative to each other are used to drive the liquid crystal between the first electrode and the second electrode; the arrangement direction of the first electrode and the second electrode relative to each other is parallel to the bearing surface of the array substrate, and the relative surfaces of the first electrode and the second electrode both intersect with the bearing surface of the array substrate.

[0007] Optionally, the first electrode is connected to the color filter substrate, and the second electrode is connected to the array substrate.

[0008] Optionally, the liquid crystal driving unit includes a pair of driving electrodes, and the liquid crystal driving unit also includes a first bump and a second bump; the first bump and the second bump are arranged along a first direction; the first electrode is located on a first side wall of the first bump, and the second electrode is located on a second side wall of the second bump, and the first side wall and the second side wall are opposite.

[0009] Optionally, the color filter substrate includes a first substrate and a color filter layer, the color filter layer is located on a side of the first substrate close to the liquid crystal layer, and the color filter layer includes a plurality of color resist blocks distributed in an array and a black matrix located between the plurality of color resist blocks; the orthographic projections of the first convex block and the second convex block on the supporting surface of the first substrate are located within the orthographic projection of the black matrix on the supporting surface of the first substrate.

[0010] Optionally, the liquid crystal drive unit includes two pairs of drive electrodes, and the liquid crystal drive unit also includes a first bump and two second bumps, the first bump and the second bump are arranged along the first direction, and the second bump is located on both sides of the first bump; the first bump has two opposite first side walls, and the two first side walls are respectively connected to one of the first electrodes; the second bump has a second side wall opposite to the first bump, and the second side wall is connected to the second electrode. Alternatively, the liquid crystal drive unit also includes two first bumps and a second bump, the first bump and the second bump are arranged along the first direction, and the first bump is located on both sides of the second bump; the second bump has two opposite second side walls, and the two second side walls are respectively connected to one of the second electrodes, the first bump has a first side wall opposite to the second bump, and the first side wall is connected to the first electrode.

[0011] Optionally, the color filter substrate includes a first substrate and a color filter layer, the color filter layer is located on a side of the first substrate close to the liquid crystal layer, and the color filter layer includes a plurality of color resist blocks distributed in an array and a black matrix located between the plurality of color resist blocks; in the same driving unit, the orthographic projection of the convex block located in the middle on the bearing surface of the first substrate is located in the middle of the orthographic projection of the color resist block on the bearing surface of the first substrate; the orthographic projections of the convex blocks located on both sides on the bearing surface of the first substrate are located within the orthographic projection of the black matrix on the bearing surface of the first substrate.

[0012] Optionally, the color filter substrate includes a first connecting electrode, which connects multiple first electrodes; the first connecting electrode is located on a side of the color filter layer close to the liquid crystal layer, and the orthographic projection of the first connecting electrode on the supporting surface of the first substrate is located within the orthographic projection of the black matrix on the supporting surface of the first substrate.

[0013] Optionally, the first bump is made of a color-resistance material or a transparent material, and the second bump is made of a color-resistance material or a transparent material.

[0014] On the other hand, a method for manufacturing a liquid crystal display panel is provided, comprising providing a color filter substrate and an array substrate; connecting the color filter substrate and the array substrate relative to each other, arranging a plurality of liquid crystal driving units in an array between the color filter substrate and the array substrate, and injecting a liquid crystal layer material between the array substrate and the color filter substrate to form a liquid crystal layer, thereby obtaining a liquid crystal display panel; wherein the liquid crystal driving unit comprises at least one pair of driving electrodes, each pair of the driving electrodes comprises a first electrode and a second electrode relative to each other, the first electrode and the second electrode relative to each other are used to drive the liquid crystal between the first electrode and the second electrode, the arrangement direction of the first electrode and the second electrode relative to each other is parallel to the bearing surface of the array substrate, and the relative surfaces of the first electrode and the second electrode both intersect with the bearing surface of the array substrate.

[0015] In yet another aspect, a liquid crystal display device is provided, the display device comprising any one of the aforementioned liquid crystal display panels and a backlight module, wherein the backlight module is used to provide a light source for the liquid crystal display panel.

[0016] The beneficial effects brought about by the technical solution provided by the present disclosure include at least: by setting a liquid crystal driving unit between the color filter substrate and the array substrate, the liquid crystal driving unit includes a relative first electrode and a second electrode, the arrangement direction of the relative first electrode and the second electrode is parallel to the bearing surface of the array substrate, and the relative surfaces of the first electrode and the second electrode both intersect with the bearing surface of the array substrate, so that the electric field lines of the electric field formed between the first electrode and the second electrode tend to be straight lines, the electric field strength is strong, and the liquid crystal efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 is a structural schematic diagram of a liquid crystal display device provided by an embodiment of the present disclosure;

[0019] Figure 2 is a schematic diagram of a cross-sectional structure of a liquid crystal display panel provided by an embodiment of the present disclosure;

[0020] Figure 3 It is a schematic diagram of a cross-sectional structure of a liquid crystal display panel in the related art;

[0021] Figure 4 It is a schematic diagram of a planar structure of a color filter substrate side of a liquid crystal display panel provided by an embodiment of the present disclosure;

[0022] Figure 5 It is a schematic diagram of a planar structure of an array substrate side of a liquid crystal display panel provided by an embodiment of the present disclosure;

[0023] Figure 6 is a schematic diagram of a cross-sectional structure of another liquid crystal display panel provided by an embodiment of the present disclosure;

[0024] Figure 7 is a schematic diagram of a cross-sectional structure of another liquid crystal display panel provided by an embodiment of the present disclosure;

[0025] Figure 8 It is a schematic diagram of the planar structure of a color filter substrate side of another liquid crystal display panel provided by an embodiment of the present disclosure;

[0026] Fig. 9 is a schematic diagram of a planar structure of an array substrate side of another liquid crystal display panel provided by an embodiment of the present disclosure;

[0027] Fig.10 is a schematic diagram of a cross-sectional structure of another liquid crystal display panel provided by an embodiment of the present disclosure;

[0028] Fig.11 is a schematic cross-sectional structure diagram of an array substrate, a second electrode, and a second bump provided in an embodiment of the present disclosure;

[0029] Fig.12 It is a schematic flow chart of a method for manufacturing a liquid crystal display panel provided in an embodiment of the present disclosure.

[0030] Legend:

[0031] 100, liquid crystal display panel 200, backlight module x, first direction

[0032] 1. Color filter substrate 2. Array substrate 3. Liquid crystal drive unit 4. Liquid crystal layer

[0033] 11. First substrate 12. Color filter layer 121. Color block 122. Black matrix

[0034] 13. first electrode 14. first bump 15. first connection electrode

[0035] 21, second substrate 22, driving circuit layer 23, second electrode 24, second bump

[0036] 25, buffer layer 26, active layer 27, gate insulating layer 28, gate layer

[0037] 29, first insulating layer 30, source and drain electrode layer 31, second insulating layer

[0038] 32, first switching electrode 33, first planarization layer 34, second switching electrode

[0039] 35. Second planarization layer DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0041] The terms used in the embodiments of the present disclosure are only used to explain the embodiments of the present disclosure, and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be the usual meanings understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second", "third" and similar words used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate quantitative restrictions, but indicate that there is at least one. Similar words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects.

[0042] Figure 1 Schematic diagram of a liquid crystal display device provided by an embodiment of the present disclosure. Figure 1 As shown, the liquid crystal display device includes a liquid crystal display panel 100 and a backlight module 200. The liquid crystal display panel 100 is located on the light-emitting side of the backlight module 200. The shape and size of the liquid crystal display panel 100 are usually matched with the backlight module 200. For example, when the liquid crystal display device is applied to fields such as televisions or mobile terminals, the liquid crystal display panel 100 and the backlight module 200 can be set to be rectangular. The liquid crystal display panel 100 itself does not emit light, and the backlight module 100 is required to provide a light source for the liquid crystal display panel 200 to achieve brightness display.

[0043] Optionally, the backlight module is a direct-lit backlight module or an edge-lit backlight module, which is not limited in the present disclosure.

[0044] Figure 2 Schematic diagram of a cross-sectional structure of a liquid crystal display panel provided by an embodiment of the present disclosure. Figure 2As shown, the liquid crystal display panel includes a color filter substrate 1, an array substrate 2, multiple liquid crystal driving units 3 and a liquid crystal layer 4. The color filter substrate 1 and the array substrate 2 are relatively connected, and the liquid crystal layer 4 and the multiple liquid crystal driving units 3 are located between the color filter substrate 1 and the array substrate 2.

[0045] A plurality of liquid crystal drive units 3 are arranged in an array. Each liquid crystal drive unit 3 includes at least one pair of drive electrodes. Each pair of drive electrodes includes an opposite first electrode 13 and a second electrode 23, and the opposite first electrode 13 and the second electrode 23 are used to drive the liquid crystal between the first electrode 13 and the second electrode 23. The arrangement direction of the opposite first electrode 13 and the second electrode 23 is parallel to the bearing surface of the array substrate 2, and the opposite surfaces of the first electrode 13 and the second electrode 23 intersect with the bearing surface of the array substrate 2.

[0046] Here, the bearing surface of the array substrate 2 refers to the surface of the array substrate 2 close to the liquid crystal layer 4. The first electrode 13 and the second electrode 23 are planar electrodes, so the opposing surfaces of the first electrode 13 and the second electrode 23 are both planes. "Intersecting" means that in a three-dimensional space, the opposing surfaces of the first electrode 13 and the second electrode 23 intersect with the bearing surface of the array substrate 2, that is, the plane where the first electrode 13 and the second electrode 23 are located is not parallel to the bearing surface of the array substrate 2.

[0047] For example, Figure 2 As shown, the color filter substrate 1 includes a first substrate 11 and a color filter layer 12 located on a side of the first substrate 11 close to the liquid crystal layer 4. The color filter layer 12 includes a plurality of color resist blocks 121 distributed in an array and a black matrix 122 located between the plurality of color resist blocks. Figure 2 In the embodiment, the orthographic projection of the color resist block 121 on the surface of the first substrate 11 does not coincide with the orthographic projection of the black matrix 122 on the surface of the first substrate 11, while in other embodiments, the edge portion of the orthographic projection of the color resist block 121 on the surface of the first substrate 11 may coincide with the orthographic projection of the black matrix 122 on the surface of the first substrate 11.

[0048] The array substrate 2 includes a stacked base substrate 21 and a driving circuit layer 22, wherein the driving circuit layer 22 is close to the liquid crystal layer 4. At least one of the plurality of first electrodes 23 and the plurality of second electrodes 13 is connected to the driving circuit layer 22, and the driving circuit layer 22 controls the brightness of the corresponding sub-pixel of the liquid crystal driving unit 3, thereby realizing the display function of the liquid crystal display panel.

[0049] Figure 3 Schematic diagram of the interface structure of a liquid crystal display panel in the related art. Figure 3As shown, in the related art, a liquid crystal display panel, such as an IPS (In-Plane Switching) panel, includes a color filter substrate 1 and an array substrate 2 relative to each other, and a liquid crystal layer 4 located between the array substrate 2 and the color filter substrate 1. The driving circuit layer 22 has a plurality of electrode pairs, each electrode pair includes two electrodes 220 with opposite polarities, and an electric field is formed between the two electrodes 220 in each electrode pair, and the electric field is used to control the liquid crystal layer 4. The planes where the plurality of electrodes 220 are located are parallel to the bearing surface of the array substrate. However, since the electric field lines in the electric field formed by each electrode pair are parabolic and the electric field strength is weak, the liquid crystal efficiency is low.

[0050] In the liquid crystal display panel provided by the present disclosure, the first electrode 13 and the second electrode 23 are arranged opposite to each other, and the arrangement direction of the first and second electrodes relative to each other is parallel to the bearing surface of the array substrate, so that the electric field lines of the electric field formed by the first and second electrodes relative to each other tend to be straight lines, the intensity of the electric field is strong, the liquid crystal efficiency is high, and it is beneficial to improve the brightness of the product. At the same time, the liquid crystal display panel provided by the present disclosure can avoid the flexoelectric effect caused by the electric field with parabolic electric field lines, thereby improving the flicker (Flicker) defect.

[0051] In one possible implementation, see again Figure 2 , the first electrode 13 is connected to the color filter substrate 1, and the second electrode 23 is connected to the array substrate 2. Compared with the related art, since the wiring space on the color filter substrate 1 side is relatively abundant, while the wiring space on the array substrate 2 side is tight, arranging some electrodes on the color filter substrate 1 side can reduce the wiring in the array substrate 2, which is beneficial to improving the aperture ratio of the liquid crystal display panel, thereby improving the transmittance of the liquid crystal display panel.

[0052] In another possible implementation manner, both the first electrode 13 and the second electrode 23 are connected to the array substrate 2 .

[0053] For example, Figure 2 As shown, the liquid crystal drive unit 3 includes two pairs of drive electrodes. The liquid crystal drive unit 3 also includes a first bump 14 and two second bumps 24, the first bump 14 and the second bump 24 are arranged along the first direction x, and the two second bumps 24 are located on both sides of the first bump 14. The first bump 14 has two opposite first side walls, and the two first side walls are respectively connected to a first electrode 13. The second bump 24 has a second side wall opposite to the first bump 14, and the second side wall is connected to the second electrode 23. Arranging two pairs of drive electrodes in a liquid crystal drive unit 3 can maximize the electric field strength, improve the liquid crystal efficiency, and thus improve the product brightness.

[0054] Here, the first direction x may be a row direction or a column direction of the plurality of drive crystal units 3 .

[0055] For example, Figure 2 As shown, the first bump 14 is connected to the middle of the color resist block 121. The orthographic projection of the second bump 24 on the bearing surface of the first substrate 11 is located within the orthographic projection of the black matrix 122 on the bearing surface of the first substrate 11, that is, the second bump 24 is located "below" the black matrix 122. This arrangement can make the two electric field intensities formed by the two pairs of driving electrodes in a liquid crystal drive unit 3 the same, so that the light can be emitted more fully and evenly; at the same time, the second bump 24 is arranged below the black matrix 122 to increase the aperture ratio as much as possible. Optionally, the plurality of second bumps 24 may not be entirely located below the black matrix 122, that is, part of the structure of the plurality of second bumps 24 is located below the color resist block 121.

[0056] Figure 4 and Figure 5 A liquid crystal display panel ( Figure 2 Schematic diagram of the planar structure of the color filter substrate side and the array substrate side of the embodiment shown in FIG. Figure 4 As shown, a plurality of first electrodes 13 are distributed in an array on the first substrate 11, and the plurality of first electrodes 13 are connected to each other. Figure 5 As shown, a plurality of second electrodes 23 are distributed in an array on the second substrate 21. Figure 5 The dotted line frame area is the orthographic projection of the plurality of color resist blocks 121 on the color filter substrate 1 onto the supporting surface of the array substrate 2 .

[0057] Figure 6 is a schematic diagram of a cross-sectional structure of another liquid crystal display panel provided by an embodiment of the present disclosure. Figure 2 Compared with the embodiment shown, the difference is: Figure 6 In the illustrated embodiment, each liquid crystal driving unit 3 includes two pairs of driving electrodes. The liquid crystal driving unit 3 also includes two first bumps 14 and one second bump 24. The first bump 12 and the second bump 24 are arranged along the first direction x, and the first bump 14 is located on both sides of the second bump 24. The second bump 24 has two opposite second side walls, and the two second side walls are respectively connected to a second electrode. The first bump 14 has a first side wall opposite to the second bump 24, and the first side wall 12 is connected to the first electrode 13.

[0058] The orthographic projection of the second bump 24 on the bearing surface of the first substrate 11 is located in the middle of the orthographic projection of the color block 121 on the bearing surface of the first substrate 11. The orthographic projection of the first bump 14 on the bearing surface of the first substrate 11 is located within the orthographic projection of the black matrix 122 on the bearing surface of the first substrate 11. The effect corresponding to the arrangement of the first electrode 13 and the second electrode 23 is similar to that of Figure 2 The effects of the embodiments shown are similar, and an electric field with electric field lines tending to be straight lines can be formed, the electric field strength is strong, and the liquid crystal efficiency is improved. No further details will be given here.

[0059] For example, after simulation experiments, for ultra-high PPI products (pixel size less than 15 μm), the number of first bumps 14 and second bumps 24 provided in each liquid crystal drive unit 3 is three, for example, two second bumps 24 and one first bump 14 (such as Figure 2 ), or two first bumps 14 and one second bump 24 (as shown Figure 6 As shown), the transmittance can be increased as much as possible.

[0060] Figure 7 is a schematic diagram of a cross-sectional structure of another liquid crystal display panel provided by an embodiment of the present disclosure. Figure 2 Compared with the embodiment shown, the difference is: Figure 7 In the illustrated embodiment, each liquid crystal drive unit 3 includes a pair of drive electrodes. The liquid crystal drive unit 3 also includes a first bump 14 and a second bump 24. The first bump 14 and the second bump 24 are arranged along a first direction x, that is, along the arrangement direction of the first electrode 13 and the second electrode 23. The first electrode 13 is located on the first side wall of the first bump 14, and the second electrode 23 is located on the second side wall of the second bump 24, and the first side wall and the second side wall are opposite. The first bump 14 and the second bump 24 are used to support the first electrode 13 and the second electrode 23. Providing a pair of drive electrodes in a liquid crystal drive unit 3 can also increase the electric field strength, improve the liquid crystal efficiency, and thus improve the product brightness.

[0061] Exemplarily, the orthographic projections of the first bump 14 and the second bump 24 on the bearing surface of the first substrate 11 are located within the orthographic projection of the black matrix 122 on the bearing surface of the first substrate 11. The first bump 14 and the second bump 24 are arranged below the black matrix 122 to maximize the aperture ratio. Here, the bearing surface of the first substrate 11 refers to a side of the first substrate 11 close to the liquid crystal layer 4.

[0062] Figure 8 and Fig. 9 They are Figure 7 The schematic diagram of the planar structure of the color filter substrate side and the array substrate side of the liquid crystal display panel is shown in FIG. Figure 8 As shown, a plurality of first electrodes 13 are distributed in an array on the first substrate 11, and the plurality of first electrodes 13 are connected to each other. Fig. 9 As shown, a plurality of second electrodes 23 are distributed in an array on the second substrate 21. Figure 8 The dotted line frame area is the orthographic projection of the multiple color resist blocks 121 on the color filter substrate 1 on the supporting surface of the array substrate 2 .

[0063] For example, for an ultra-high PPI product (pixel size is less than 6 μm), each liquid crystal driving unit 3 is provided with a first bump 14 and a second bump 24 (eg, Figure 7As shown), the transmittance can be increased as much as possible while further reducing the process difficulty.

[0064] The transmittance of the liquid crystal display panel is calculated as follows: transmittance = transmittance of the array substrate * transmittance of the color film substrate * aperture ratio * liquid crystal efficiency. In the related art, the transmittance of the array substrate is about 70-80%, the transmittance of the color film substrate is about 25-40%, the aperture ratio of the high PPI product is about 30-50%, and the liquid crystal efficiency is about 30-50%. After simulation calculation, the transmittance of the liquid crystal display panel is about 1.5%. In the liquid crystal display panel shown in the present disclosure, the transmittance of the array substrate is about 70-80%, the transmittance of the color film substrate is about 25-40%, the aperture ratio of the high PPI product is about 30-50%, and the liquid crystal efficiency is about 90-100%. After simulation calculation, the transmittance is about 3%, and the transmittance of the liquid crystal display panel can be increased by more than 80%.

[0065] For example, Figure 2 As shown, the range of the distance between the color filter substrate 1 and the array substrate 2 and the difference a between the height of the first bump 14 and the second bump 24 is 0.5μm to 2.0μm, for example, 0.5μm to 1.0μm, and for example, 0.5μm, 0.6μm, 0.7μm, 1.2μm, etc. The liquid crystal display panel will deform under the action of external forces such as pressing, so that the distance between the color filter substrate 1 and the array substrate 2 is reduced. By making the height of the first bump 14 and the second bump 24 smaller and the difference a within this range, the first bump 14 or the second bump 24 can be prevented from breaking the liquid crystal display panel.

[0066] In the present disclosure, Figure 4 or Figure 8 As shown, the color filter substrate 11 further includes a first connection electrode 15, and the first connection electrode 15 connects the plurality of first electrodes 13. The first connection electrode 15 is located on the side of the color filter layer 12 close to the liquid crystal layer 4, and the orthographic projection of the first connection electrode 15 on the bearing surface of the first substrate 11 is located within the orthographic projection of the black matrix 122 on the bearing surface of the first substrate 11. The first connection electrode 15 electrically connects the plurality of first electrodes 13, so as to facilitate simultaneous control of the plurality of first electrodes 13. The first connection electrode 15 is arranged below the black matrix 122 to minimize the impact on the aperture ratio.

[0067] Optionally, the orthographic projection of the first connection electrode 15 on the supporting surface of the first substrate 11 may be as follows: Figure 4 or Figure 7The complete grid shape shown can also be an incomplete grid shape, as long as the first connection electrodes 15 can achieve the function of connecting all the first electrodes 13. Here, for the complete grid-shaped first connection electrodes 15, each color resist block 121 has a complete circle of first connection electrodes 15 around it; for the incomplete grid-shaped first connection electrodes 15, there are at least some color resist blocks 121, and these color resist blocks 121 have a circle of first connection electrodes 15 with gaps around them.

[0068] Exemplarily, the electrode located on the color filter substrate 1 side and the first connection electrode 15 connected thereto are called common electrodes, and the electrode located on the array substrate 2 side is called a pixel electrode.

[0069] Exemplarily, the plurality of first bumps 14 are made of color-resist material or transparent material, and the plurality of second bumps 24 are made of color-resist material or transparent material. Hereinafter, the term "bump" is used to refer to the first bump 14 or the second bump 24 .

[0070] Optionally, the color resist material may be a red, blue or green color resist material. A bump may be made of a color resist material of one color, or may be made of a stack of color resist materials of multiple colors. Optionally, for a color resist block 121 and a bump located below the color resist block 121, the bump may be made of a color resist material of the same color as the color resist block to minimize color deviation. Optionally, for a color resist block 121 and a bump located below the color resist block 121, the bump may be made of a color resist material of a different color from the color resist block.

[0071] Optionally, the transparent material may be an organic material or an inorganic material. The organic material may be a transparent resin material and PI (polyimide), etc., and the inorganic material may be silicon oxide (SiO X ) etc. Transparent resin material can also be used as OC (OverCoat) material. Among them, the bumps made of transparent resin have high transmittance and the manufacturing process is not difficult.

[0072] In the embodiment of the present disclosure, the liquid crystal display panel includes a plurality of sub-pixels, and each sub-pixel includes a color block. Assuming that any two adjacent sub-pixels are the first sub-pixel and the second sub-pixel, for a liquid crystal display panel with ultra-high pixel density (Pixels Per Inch, PPI), due to the small size of the sub-pixel, the electric field of the first sub-pixel will affect the liquid crystal in the second sub-pixel, resulting in edge field light leakage. In the embodiment of the present disclosure, there are two bumps between two adjacent sub-pixels, and the two bumps can be as follows: Figure 2 The two second protrusions 24 shown, or as shown in Figure 6 The two first protrusions 14 shown, or as shown in Figure 7The first bump 14 and the second bump 24 are shown. If the bumps are made of a material with a higher dielectric constant, such as the color resist material, SiO X And PI and other materials, the two bumps can achieve electric field shielding between two adjacent sub-pixels, reduce the impact of electric field crosstalk between pixels, and improve the edge field effect problem.

[0073] Exemplarily, the first electrode 13 or the second electrode 23 is made of a transparent conductive material or a metal material, wherein the transparent conductive material includes but is not limited to ITO (Indium tin oxide), IZO (Indium Zinc Oxide), etc., and the metal material includes at least one of molybdenum, aluminum or copper.

[0074] For example, Figure 2 or Figure 6 As shown, the first bump 14 and the second bump 24 may be in the shape of a cuboid with sidewalls perpendicular to the bearing surface of the first substrate 11. Correspondingly, the opposing surfaces of the first electrode 13 and the second electrode 23 may be perpendicular to the bearing surface of the first substrate 11.

[0075] For example, Fig. 9 is a schematic diagram of a cross-sectional structure of another liquid crystal display panel provided by an embodiment of the present disclosure, such as Fig. 9 As shown, the first bump 14 and the second bump 24 may be in the shape of a prism. Correspondingly, the opposing surfaces of the first electrode 13 and the second electrode 23 may also form a certain angle with the bearing surface of the first substrate 11 .

[0076] Fig.10 is a schematic diagram of a cross-sectional structure of an array substrate, a second electrode and a second bump provided by an embodiment of the present disclosure, for example Figure 2 A magnified schematic diagram of area A in the figure. Fig.10 As shown, the driving circuit layer of the array substrate 2 includes a plurality of pixel driving units, and each sub-pixel includes a pixel driving unit. Each pixel driving unit includes a TFT (Thin Film Transistor) located in the driving circuit layer 22 .

[0077] For example, Fig.10 The array substrate shown includes a second substrate 21 and a buffer layer 25, an active layer 26, a gate insulating layer 27, a gate layer 28, a first insulating layer 29, a source-drain electrode layer 30, a second insulating layer 31, a first transfer electrode 32, a first planarization layer 33, a second transfer electrode 34, and a second planarization layer 35 sequentially stacked on the second substrate 21. The second transfer electrode 34 is connected to the second electrode 23.

[0078] For example, Fig.10As shown, the second electrode 23 is electrically connected to the TFT via the first switching electrode 32 and the second switching electrode 34. Each switching electrode has a corresponding via hole.

[0079] In ultra-high PPI products, the spacing between two adjacent traces is subject to a minimum process limitation of 2μm. That is, the minimum spacing between two adjacent traces located in the same film layer is 2μm. If the spacing is too small, a short circuit may occur. However, if the two traces are located in different film layers, there is no minimum spacing limitation of 2μm. In the embodiment of the present disclosure, part of the traces in the array substrate 2 are arranged on one side of the color filter substrate 1. This part of the traces is called the first part of the traces, and the traces in the array substrate 2 are called the second part of the traces. Since the first part of the traces and the second part of the traces are not located in the same film layer, they are not limited by the process limitation that the minimum spacing between the two adjacent traces is 2μm, but are limited by the alignment accuracy of the color filter substrate 1 and the array substrate 2. Since the alignment accuracy of the color filter substrate 1 and the array substrate 2 is 0.5μm (less than 2μm), the spacing between the first part of the traces and the second part of the traces in the horizontal direction is further compressed in the present disclosure, which is conducive to improving the aperture ratio of the liquid crystal display panel, thereby improving the transmittance of the liquid crystal display panel. Here, the horizontal direction refers to the direction parallel to the bearing surface of the first substrate.

[0080] Exemplarily, the array substrate may be an LTPS (Low Temperature Poly-Silicon) substrate or an LTPO (Low Temperature Polycrystalline Oxide) substrate.

[0081] Exemplarily, the first substrate 1 can be any transparent substrate, such as a glass substrate, a quartz substrate, a plastic substrate, other transparent hard substrates or other transparent flexible substrates, which can be a single layer or a multilayer structure. Taking a multilayer structure as an example, the first substrate includes a first PI (polyimide) layer, a first protective layer, a second PI (polyimide) layer, and a second protective layer stacked from bottom to top. The two protective layers are used to protect the PI layer to prevent subsequent processes from damaging the PI layer. The second protective layer is also covered with a buffer layer, which can block water oxygen and block alkaline ions.

[0082] Exemplarily, the active layer 26 is made of low-temperature polysilicon material or metal oxide semiconductor materials such as IGZO (Indium Gallium Zinc Oxide).

[0083] Exemplarily, the gate insulating layer 27 is made of silicon oxide, silicon nitride, silicon oxynitride or the like.

[0084] Exemplarily, the gate 28 is made of a metal material, such as molybdenum, or titanium, aluminum, and titanium materials that are alternately stacked in sequence.

[0085] Exemplarily, the first insulating layer 29 and the second insulating layer 31 are made of silicon oxide, silicon nitride, silicon oxynitride, or the like.

[0086] Exemplarily, the first switching electrode 32 and the second switching electrode 34 are made of a transparent conductive material, such as ITO, IZO, etc.

[0087] Exemplarily, the first planarization layer 33 and the second planarization layer 35 are made of an organic insulating material, such as resin.

[0088] Fig.11 is a schematic diagram of a process for manufacturing a liquid crystal display panel provided by an embodiment of the present disclosure, such as Fig.11 As shown, the method for manufacturing a liquid crystal display panel includes:

[0089] In step S1, a color filter substrate and an array substrate are provided.

[0090] In step S2, the color filter substrate and the array substrate are relatively connected, a plurality of liquid crystal driving units are arrayed between the color filter substrate and the array substrate, and a liquid crystal layer material is injected between the array substrate and the color filter substrate to form a liquid crystal layer to obtain a liquid crystal display panel.

[0091] Among them, the liquid crystal driving unit includes at least one pair of driving electrodes, each pair of driving electrodes includes a relative first electrode and a second electrode, the relative first electrode and the second electrode are used to drive the liquid crystal between the first electrode and the second electrode, the arrangement direction of the relative first electrode and the second electrode is parallel to the bearing surface of the array substrate, and the relative surfaces of the first electrode and the second electrode both intersect with the bearing surface of the array substrate.

[0092] Illustratively, in step S2, in the process of arranging multiple liquid crystal driving units in an array, a first bump is first made on the color filter substrate, a second bump is made on the array substrate, a first electrode is then made on the first bump, and a second electrode is made on the second bump.

[0093] Optionally, the bump is manufactured by using an exposure etching process or a nano-imprinting process, and the bump includes a first bump or a second bump. Optionally, the etching process is a dry etching process.

[0094] Optionally, an initial electrode layer is formed on the bump, and a series of processes such as photoresist coating, exposure, etching, and stripping are used to obtain the first electrode and the second electrode. Optionally, before the initial electrode layer is formed, a sacrificial layer can be set in the area other than the first electrode and the second electrode. For example, a sacrificial layer can be set on the side of the two bumps located at the junction of two sub-pixels to facilitate the removal of the lateral metal of the two bumps between two adjacent sub-pixels. Here, "side" refers to the side wall of the bump with a smaller area except for the side wall on which the first electrode or the second electrode is set, and the other side wall opposite to the side wall. Optionally, the sacrificial layer material is photoresist. Optionally, the initial electrode layer is formed by sputtering or oblique evaporation by evaporation. Optionally, the photoresist is stripped using a chemical solution.

[0095] The present disclosure also provides a liquid crystal display device, which includes a backlight module and the aforementioned liquid crystal display panel, wherein the backlight module is used to provide a light source for the liquid crystal display panel.

[0096] Exemplarily, the liquid crystal display device further includes a power supply circuit, and the power supply circuit is used to supply power to the liquid crystal display panel.

[0097] For example, the liquid crystal display device provided in the embodiment of the present disclosure can be any product or component with display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc. The liquid crystal display device has the same effect as the aforementioned display panel, which will not be described in detail here.

[0098] The liquid crystal display device provided in the embodiments of the present disclosure is particularly suitable for high PPI display devices, including but not limited to augmented reality (AR) display devices, virtual reality (VR) display devices, etc.

[0099] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A liquid crystal display panel, characterized in that: The liquid crystal display panel comprises a color filter substrate, an array substrate, a liquid crystal layer and a plurality of liquid crystal driving units, wherein the color filter substrate and the array substrate are relatively connected, and the liquid crystal layer and the plurality of liquid crystal driving units are located between the color filter substrate and the array substrate; The plurality of liquid crystal driving units are arranged in an array, the liquid crystal driving unit comprises two pairs of driving electrodes, each pair of the driving electrodes comprises a first electrode and a second electrode opposite to each other, the first electrode and the second electrode opposite to each other are used to drive the liquid crystal between the first electrode and the second electrode, the first electrode is connected to the color filter substrate, and the second electrode is connected to the array substrate; The arrangement direction of the first electrode and the second electrode relative to each other is parallel to the carrying surface of the array substrate, and the relative surfaces of the first electrode and the second electrode both intersect with the carrying surface of the array substrate; The liquid crystal driving unit further includes a first bump and two second bumps, the first bump and the second bump are arranged along a first direction, and the second bump is located on both sides of the first bump, the first bump has two opposite first side walls, the two first side walls are respectively connected to one of the first electrodes, and the second bump has a second side wall opposite to the first bump, and the second side wall is connected to the second electrode; or, The liquid crystal driving unit also includes two first bumps and one second bump, the first bump and the second bump are arranged along a first direction, and the first bump is located on both sides of the second bump, the second bump has two opposite second side walls, the two second side walls are respectively connected to one second electrode, and the first bump has a first side wall opposite to the second bump, and the first side wall is connected to the first electrode.

2. The liquid crystal display panel according to claim 1, characterized in that: The color filter substrate comprises a first substrate and a color filter layer, wherein the color filter layer is located on a side of the first substrate close to the liquid crystal layer, and the color filter layer comprises a plurality of color resist blocks distributed in an array and a black matrix located between the plurality of color resist blocks; In the same driving unit, the orthographic projection of the middle convex block on the bearing surface of the first substrate is located in the middle of the orthographic projection of the color resist block on the bearing surface of the first substrate; the orthographic projections of the convex blocks on both sides on the bearing surface of the first substrate are located within the orthographic projection of the black matrix on the bearing surface of the first substrate.

3. The liquid crystal display panel according to claim 2, characterized in that: The color filter substrate comprises a first connecting electrode, and the first connecting electrode is connected to a plurality of the first electrodes; The first connecting electrode is located on a side of the color filter layer close to the liquid crystal layer, and an orthographic projection of the first connecting electrode on the bearing surface of the first substrate is located within an orthographic projection of the black matrix on the bearing surface of the first substrate.

4. The liquid crystal display panel according to any one of claims 1 to 3, characterized in that: The first bump is made of a color-resistance material or a transparent material, and the second bump is made of a color-resistance material or a transparent material.

5. A method for manufacturing a liquid crystal display panel, characterized in that: The method comprises: Provide color filter substrates and array substrates; The color filter substrate and the array substrate are connected relative to each other, a plurality of liquid crystal driving units are arranged in an array between the color filter substrate and the array substrate, and a liquid crystal layer material is injected between the array substrate and the color filter substrate to form a liquid crystal layer, thereby obtaining a liquid crystal display panel; Wherein, the liquid crystal driving unit includes two pairs of driving electrodes, each pair of the driving electrodes includes a first electrode and a second electrode opposite to each other, the first electrode is connected to the color filter substrate, the second electrode is connected to the array substrate, the first electrode and the second electrode opposite to each other are used to drive the liquid crystal between the first electrode and the second electrode, the arrangement direction of the first electrode and the second electrode opposite to each other is parallel to the bearing surface of the array substrate, and the opposite surfaces of the first electrode and the second electrode both intersect with the bearing surface of the array substrate; The liquid crystal driving unit further includes a first bump and two second bumps, the first bump and the second bump are arranged along a first direction, and the second bump is located on both sides of the first bump, the first bump has two opposite first side walls, the two first side walls are respectively connected to one of the first electrodes, and the second bump has a second side wall opposite to the first bump, and the second side wall is connected to the second electrode; or, The liquid crystal driving unit also includes two first bumps and one second bump, the first bump and the second bump are arranged along a first direction, and the first bump is located on both sides of the second bump, the second bump has two opposite second side walls, the two second side walls are respectively connected to one second electrode, and the first bump has a first side wall opposite to the second bump, and the first side wall is connected to the first electrode.

6. A liquid crystal display device, characterized in that: The display device comprises the liquid crystal display panel according to any one of claims 1 to 4 and a backlight module, wherein the backlight module is used to provide a light source for the liquid crystal display panel.

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