Pixel structure and display panel

Abstract

The utility model belongs to the technical field of display, and particularly relates to a pixel structure and a display panel. The pixel structure comprises an array function layer and a pixel electrode layer, the pixel electrode layer is arranged on the surface of the array function layer, the pixel electrode layer comprises a plurality of strip-shaped electrodes and a plurality of filling and leveling parts, the strip-shaped electrodes are arranged at intervals, the faces, away from the array function layer, of the strip-shaped electrodes are flush, the filling and leveling parts are at least arranged between every two adjacent strip-shaped electrodes, and the filling and leveling parts are arranged on the surface of the array function layer. The face, away from the array function layer, of the filling and leveling part is flush with the face, away from the array function layer, of the strip-shaped electrode. The filling and leveling part is arranged between every two adjacent strip-shaped electrodes, and the face, deviating from the array function layer, of each filling and leveling part is flush with the face, deviating from the array function layer, of each strip-shaped electrode, so that the terrain difference of the face, deviating from the array function layer, of the pixel electrode layer is reduced, and the influence of the terrain difference on the inclination angle of liquid crystals is reduced; therefore, the display contrast of the display panel can be improved.

Description

Technical Field

[0001] The present disclosure belongs to the field of display technology, and particularly relates to a pixel structure and a display panel. Background Art

[0002] The strip electrodes in the pixel structure are distributed at intervals on the surface of the array functional layer, so that gaps are formed between adjacent strip electrodes. The liquid crystal layer is arranged between the strip electrodes and the color film substrate. When the display panel is in the display state, due to the potential difference between the gaps between the strip electrodes and the side of the strip electrodes away from the array functional layer, under the influence of the potential difference formed by the strip electrodes, the liquid crystal layer is squeezed by the strip electrodes located at the high terrain, causing the liquid crystal molecules in the liquid crystal layer to tilt at different angles, affecting the emission of light, and then causing the contrast of the display panel to decrease. Utility Model Content

[0003] The purpose of the present application is to provide a pixel structure and a display panel, which can reduce the potential difference formed on the side of the pixel electrode layer away from the array functional layer, reduce the impact on the deflection angle of the liquid crystal molecules, and improve the display contrast of the display panel.

[0004] The present disclosure provides a pixel structure, comprising:

[0005] Array functional layer;

[0006] A pixel electrode layer is arranged on the surface of the array functional layer, and the pixel electrode layer includes a plurality of strip electrodes and a plurality of flattened portions. The strip electrodes are arranged at intervals, and a side of each strip electrode away from the array functional layer is flush with the flattened portion. The flattened portion is at least arranged between two adjacent strip electrodes, and a side of the flattened portion away from the array functional layer is flush with a side of the strip electrode away from the array functional layer.

[0007] In an exemplary embodiment of the present disclosure, the thickness of the filled portion is defined as H1, and the thickness of the strip electrode is defined as H2, then: H2≤H1.

[0008] In an exemplary embodiment of the present disclosure, the thickness of the flattened portion is defined as H1, which satisfies: 50 nm ≤ H1 ≤ 1000 nm.

[0009] In an exemplary embodiment of the present disclosure, the width of the filling portion is defined as W, which satisfies: 1um≤W≤5um.

[0010] In an exemplary embodiment of the present disclosure, the material of the filling portion is silicon nitride or silicon oxide.

[0011] In an exemplary embodiment of the present disclosure, the pixel structure includes an alignment layer, the alignment layer is located on a side of the pixel electrode layer away from the array functional layer, and the alignment layer covers the pixel electrode layer.

[0012] In an exemplary embodiment of the present disclosure, the array function layer includes:

[0013] substrate;

[0014] A thin film transistor is located between the substrate and the pixel electrode layer, and is used to connect the pixel electrode layer and supply power to the pixel electrode layer.

[0015] In an exemplary embodiment of the present disclosure, the thin film transistor includes:

[0016] A gate electrode is located on a side of the substrate facing the pixel electrode layer;

[0017] an insulating layer, located on a side of the gate facing away from the substrate, the insulating layer covering the gate;

[0018] A semiconductor layer, located on a side of the insulating layer facing away from the substrate;

[0019] The source and drain electrodes are located on a side of the semiconductor layer away from the substrate, and the source and drain electrodes are arranged corresponding to the strip electrodes and connected to the strip electrodes.

[0020] The present disclosure provides a display panel, comprising a color filter substrate, a liquid crystal layer and a pixel structure as described in any one of the above, wherein the liquid crystal layer is located between the color filter substrate and the pixel structure, and the color filter substrate comprises a common electrode, which is arranged correspondingly between the common electrode and the strip electrodes.

[0021] In an exemplary embodiment of the present disclosure, the display panel has a plurality of sub-pixel regions, each of the sub-pixel regions includes an opening region and a non-opening region arranged around the opening region, and the strip electrodes are located in the opening region.

[0022] This application scheme has the following beneficial effects:

[0023] The present invention provides a filling portion between two adjacent strip electrodes, and the side of the filling portion facing away from the array functional layer is flush with the side of the strip electrode facing away from the array functional layer, thereby reducing the potential difference between the pixel electrode layer at the gap between the two adjacent strip electrodes and the strip electrode, so as to reduce the squeezing of the liquid crystal layer by the strip electrode at the high terrain of the pixel electrode layer, thereby reducing the influence of the potential difference on the side of the pixel electrode layer facing the liquid crystal layer on the tilt angle of the liquid crystal in the liquid crystal layer, so that the liquid crystal in the black state displays shields the backlight, reduces the backlight or the light generated by the structural layers such as the metal layer in the pixel structure to pass through the liquid crystal layer to enter the wide viewing angle, and causes the display panel to leak light. At the same time, in the white state display, the tilt angle of the liquid crystal in the liquid crystal layer can be reduced to be limited under the squeezing of the high terrain of the pixel electrode layer, and then the liquid crystal can be tilted at a certain angle under the action of the electric field, so that more backlight passes through the liquid crystal to enter the wide viewing angle, so as to improve the display brightness in the white state display, and further improve the display contrast of the display panel.

[0024] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0027] Figure 1 It is a schematic diagram of the cross-sectional structure of the display panel when no filling portion is provided in the embodiment of the present disclosure.

[0028] Figure 2 It is a schematic diagram of the planar structure of the array functional layer and the strip electrodes when no filling portion is provided in the embodiment of the present disclosure.

[0029] Figure 3 Schematic diagram of the planar structure of the pixel structure in the embodiment of the present disclosure.

[0030] Figure 4 for Figure 3 Schematic diagram of the local cross-sectional structure at the dotted line A.

[0031] Figure 5 for Figure 3 Schematic diagram of the local plane structure at the dotted line A.

[0032] Figure 6 It is a schematic diagram of the cross-sectional structure when a filling material film is formed in an embodiment of the present disclosure.

[0033] Figure 7 It is a schematic diagram of the cross-sectional structure when the filling portion is formed in the embodiment of the present disclosure.

[0034] Figure 8 Another schematic diagram of a cross-sectional structure when a filling material film is formed in an embodiment of the present disclosure.

[0035] Fig. 9 It is another schematic diagram of the cross-sectional structure when the filling portion is formed in the embodiment of the present disclosure.

[0036] Fig.10 For Fig. 9 A schematic diagram of the cross-sectional structure of a strip electrode formed in a pit of the filled portion.

[0037] Fig.11 It is a schematic diagram of the planar structure when the thickness of the filling portion is greater than the thickness of the strip electrode.

[0038] Description of reference numerals:

[0039] 1. Display panel;

[0040] 11. Color film substrate;

[0041] 12. liquid crystal layer; 121. liquid crystal;

[0042] 13. Pixel structure; 131. Array functional layer; 132. Pixel electrode layer; 1321. Strip electrode; 1322. Filling part; 1323. Filling material film; 1323a. Completely removed area; 1323b. First retained area; 1323c. Second retained area; 1323d. Third retained area; 133. Alignment layer. DETAILED DESCRIPTION

[0043] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more comprehensive and complete and will fully convey the concept of the example embodiments to those skilled in the art.

[0044] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to reduce obscure aspects of the present disclosure.

[0045] The present disclosure is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be understood as limiting the present disclosure.

[0046] like Figure 1 and Figure 2 As shown, in the field of display technology, the pixel electrode layer 132 in the display panel 1 is not a structural layer uniformly coated on the surface of the array functional layer 131, but is composed of a plurality of strip electrodes 1321 arranged at intervals on the surface of the array functional layer 131 and gaps between adjacent strip electrodes 1321. Therefore, the terrain on the pixel electrode layer 132 where the strip electrodes 1321 are arranged is higher than the terrain on which the strip electrodes 1321 are not arranged. The liquid crystal layer 12 is arranged on the side of the pixel electrode layer 132 away from the array functional layer 131. Affected by the terrain difference of the side of the pixel electrode layer 132 away from the array functional layer 131, the high terrain of the pixel electrode layer 132 squeezes the liquid crystal layer 12, thereby causing the liquid crystal 121 in the liquid crystal layer 12 to tilt at different angles. When displaying in the black state, part of the liquid crystals 121 in the liquid crystal layer 12 is tilted, so that part of the backlight passes through the liquid crystals 121 into the wide viewing angle, and causes light leakage in the display panel 1 when displaying in the black state. When displaying in the white state, under the squeezing of the strip electrodes 1321, the tilt angle of part of the liquid crystals 121 in the liquid crystal layer 12 is limited, which in turn causes part of the backlight to be unable to enter the wide viewing angle due to the obstruction of the liquid crystals 121, and causes the display brightness of the display panel 1 to decrease when displaying in the white state. The contrast ratio of the display panel 1 = the brightness of the white state display / the brightness of the black state display. When the brightness of the white state display decreases or the brightness of the black state display increases, the display contrast ratio of the display panel 1 will decrease, thereby reducing the user experience.

[0047] To solve the above problems, the present disclosure provides a display panel 1, which includes a pixel structure 13, a color filter substrate 11 and a liquid crystal layer 12, wherein the liquid crystal layer 12 is located between the color filter substrate 11 and the pixel structure 13 (eg, Figures 3 to 11 shown).

[0048] Among them, Figure 4 and Figure 5 As shown, the liquid crystal layer 12 is filled with a plurality of liquid crystals 121, the pixel structure 13 includes an array function layer 131 and a pixel electrode layer 132, the pixel electrode layer 132 is arranged on the surface of the array function layer 131, the pixel electrode layer 132 includes a plurality of strip electrodes 1321 and a plurality of filling portions 1322, the strip electrodes 1321 are arranged at intervals, a side of each strip electrode 1321 away from the array function layer 131 is flush, the filling portion 1322 is arranged between at least two adjacent strip electrodes 1321, and a side of the filling portion 1322 away from the array function layer 131 is flush with a side of the strip electrode 1321 away from the array function layer 131.

[0049] In the embodiment of the present disclosure, a filling portion 1322 is provided between two adjacent strip electrodes 1321, and a side of the filling portion 1322 facing away from the array function layer 131 is flush with a side of the strip electrode 1321 facing away from the array function layer 131, thereby reducing the potential difference between the pixel electrode layer 132 at the gap between the two adjacent strip electrodes 1321 and the strip electrode 1321, so as to reduce the squeezing of the liquid crystal layer 12 by the pixel electrode layer 132 at the high terrain, thereby reducing the influence of the potential difference on the side of the pixel electrode layer 132 facing the liquid crystal layer 12 on the tilt angle of the liquid crystal 121 in the liquid crystal layer 12, so that the black state display is displayed. The liquid crystal 121 blocks the backlight, reducing the possibility of the backlight or the light generated by the structural layers such as the metal layer in the pixel structure 13 passing through the liquid crystal layer 12 to enter the wide viewing angle and causing light leakage in the display panel 1. At the same time, when the white state is displayed, the possibility of the tilt angle of the liquid crystal 121 in the liquid crystal layer 12 being restricted by the squeezing at the high terrain of the pixel electrode layer 132 can be reduced. Then, the liquid crystal 121 can be tilted at a certain angle under the action of the electric field, so that more backlight can pass through the liquid crystal 121 to enter the wide viewing angle, so as to improve the display brightness when the white state is displayed, and then the display contrast of the display panel 1 can be improved.

[0050] It should be noted that the vertical distances from various points on the side of the array functional layer 131 facing the pixel electrode layer 132 to the side of the pixel electrode layer 132 facing the array functional layer 131 may be equal, but not limited to this. The vertical distances from various points on the side of the array functional layer 131 facing the pixel electrode layer 132 to the side of the pixel electrode layer 132 facing the array functional layer 131 may also be unequal. At the same time, the thickness of the strip electrode 1321 may be set to the same thickness or to different thicknesses.

[0051] Specifically, when the vertical distances from each point on the side of the array functional layer 131 facing the pixel electrode layer 132 to the side of the pixel electrode layer 132 facing the array functional layer 131 are equal, each strip electrode 1321 can be set to have the same thickness. At this time, the strip electrodes 1321 are placed on the array functional layer 131, and each strip electrode 1321 is flush with a side facing away from the array functional layer 131.

[0052] When the vertical distances from various locations on the side of the array functional layer 131 facing the pixel electrode layer 132 to the side of the pixel electrode layer 132 facing the array functional layer 131 are not equal, strip electrodes 1321 of different thicknesses may be provided according to the vertical distances from various locations on the side of the array functional layer 131 facing the pixel electrode layer 132 to the side of the pixel electrode layer 132 facing the array functional layer 131, so that when the strip electrodes 1321 are provided on the array functional layer 131, each strip electrode 1321 is flush with a side facing away from the array functional layer 131.

[0053] It should be noted that the “terrain difference” mentioned above refers to the difference between the vertical distances from different positions on the side of the pixel electrode layer 132 facing the liquid crystal layer 12 to the liquid crystal layer 12; the smaller the vertical distance from the side of the pixel electrode layer 132 facing the liquid crystal layer 12 to the liquid crystal layer 12, the higher the terrain of the pixel electrode layer 132; the larger the vertical distance from the side of the pixel electrode layer 132 facing the liquid crystal layer 12 to the liquid crystal layer 12, the lower the terrain of the pixel electrode layer 132.

[0054] In the embodiment of the present disclosure, the filling portion 1322 is at least disposed between two adjacent strip electrodes 1321. Specifically, the filling portion 1322 can be located between two adjacent strip electrodes 1321, or can be disposed between the strip electrode 1321 and the array functional layer 131, but is not limited thereto. The filling portion 1322 can also be disposed on the side periphery of the strip electrode 1321 (that is, the filling portion 1322 can be disposed around the side of the strip electrode 1321), and the specific conditions can be determined according to actual conditions. It can be seen that the thickness of the filling portion 1322 is greater than or equal to the thickness of the strip electrode 1321. The thickness of the filling portion 1322 is defined as H1, and the thickness of the strip electrode 1321 is defined as H2, and then: H2≤H1 is satisfied.

[0055] The value range of the thickness H1 of the filling portion 1322 is 50nm≤H1≤1000nm. Specifically, the thickness H1 of the filling portion 1322 can be: 50nm, 100nm, 150nm, 200nm, 250nm, 300nm, 350nm, 400nm, 450nm, 500nm, 550nm, 600nm, 650nm, 700nm, 750nm, 800nm, 850nm, 900nm, 950nm, 1000nm, etc., but is not limited to this and can be determined according to actual conditions.

[0056] It should be noted that the thickness H1 of the filling portion 1322 is at least equal to the thickness H2 of the strip electrode 1321, the filling portion 1322 is filled between two adjacent strip electrodes 1321, and the side of the filling portion 1322 facing away from the array functional layer 131 is flush with the side of the strip electrode 1321 facing away from the array functional layer 131, so that the side of the pixel electrode layer 132 facing the liquid crystal layer 12 is a horizontal plane without any terrain difference, thereby reducing the possibility that the liquid crystal layer 12 is oppressed due to the terrain difference on the side of the pixel electrode layer 132 facing away from the array functional layer 131 and affecting the tilt angle of the liquid crystal 121 in the liquid crystal layer 12, so that the brightness of the display panel 1 is darker in the black state and brighter in the bright state, thereby improving the display contrast of the display panel 1.

[0057] In addition, when the thickness of each strip electrode 1321 is different, or the side of the array functional layer 131 facing the pixel electrode layer 132 is a non-horizontal surface, the filling portion 1322 can be simultaneously provided between the strip electrode 1321 and the array functional layer 131 and around the side of the strip electrode 1321. By providing the filling portion 1322 between the strip electrode 1321 and the array functional layer 131, when the strip electrode 1321 is provided on the array functional layer 131, under the effect of the filling portion 1322 , the side of the strip electrode 1321 facing the liquid crystal layer 12 can be made flush; through the filling portion 1322 between two adjacent strip electrodes 1321, the side of the pixel electrode layer 132 facing the liquid crystal layer 12 can be made horizontal, thereby reducing the potential difference of the side of the pixel electrode layer 132 away from the array functional layer 131, and reducing the pressure of the pixel electrode layer 132 on the liquid crystal layer 12 at the high terrain, so as to reduce the possibility of affecting the tilt angle of the liquid crystal 121 in the liquid crystal layer 12.

[0058] For example, when the vertical distances from each point on the side of the array functional layer 131 facing the pixel electrode layer 132 to the side of the pixel electrode layer 132 facing the array functional layer 131 are equal, and the thicknesses of the strip electrodes 1321 are the same, the strip electrodes 1321 are arranged on the side of the array functional layer 131 facing the pixel electrode layer 132, and the side of each strip electrode 1321 facing away from the array functional layer 131 is flush. At this time, a filling portion 1322 may be arranged between two adjacent strip electrodes 1321, so that the thickness H1 of the filling portion 1322 is equal to the thickness H2 of the strip electrode 1321, so that the side of the filling portion 1322 facing away from the array functional layer 131 is flush with the side of the strip electrode 1321 facing away from the array functional layer 131. One side of the column function layer 131 is flush, that is, the distances from each point on the side of the pixel electrode layer 132 away from the array function layer 131 to the liquid crystal layer 12 are equal, thereby reducing the terrain difference of the side of the pixel electrode layer 132 close to the liquid crystal layer 12, and reducing the possibility that the pixel electrode layer 132 at a high terrain will affect the tilt angle of the liquid crystal 121 in the liquid crystal layer 12, so as to reduce the light leakage of the display panel 1 due to the deflection of part of the liquid crystal 121 when the display panel 1 is in a black state, and reduce the obstruction of the high terrain of the pixel electrode layer 132 to the deflection of the liquid crystal 121, so as to increase the display brightness of the display panel 1 when the display panel 1 is in a white state, thereby improving the display contrast of the display panel 1.

[0059] At the same time, when the vertical distances from each point on the side of the array functional layer 131 facing the pixel electrode layer 132 to the side of the pixel electrode layer 132 facing the array functional layer 131 are equal, and the thicknesses of the strip electrodes 1321 are the same, the filling portion 1322 can be only arranged between two adjacent strip electrodes 1321, and does not have to be arranged between the strip electrodes 1321 and the array functional layer 131, thereby reducing the use of the material of the filling portion 1322, thereby reducing the production cost of the pixel structure 13 and the thickness of the display panel 1.

[0060] When there are differences in the vertical distances from various locations on the side of the array functional layer 131 facing the pixel electrode layer 132 to the side of the pixel electrode layer 132 facing the array functional layer 131, a filling portion 1322 of a certain thickness can be provided between adjacent strip electrodes 1321, and a filling portion 1322 of a certain thickness can be provided between the strip electrodes 1321 and the array functional layer 131. The thickness of the filling portion 1322 between the strip electrodes 1321 and the array functional layer 131 can be set according to the thickness of each strip electrode 1321 and the size of the potential difference of the array functional layer 131 at the location of each strip electrode 1321, so that when the strip electrodes 1321 are provided on the array functional layer 131, each strip electrode 1321 has a certain thickness. The side of 1321 facing away from the array functional layer 131 is flush, and the vertical distances from each point of the side of the pixel electrode layer 132 facing away from the array functional layer 131 to the liquid crystal layer 12 are equal, thereby reducing the terrain difference of the side of the pixel electrode layer 132 close to the liquid crystal layer 12, and reducing the possibility that the pixel electrode layer 132 at the high terrain affects the tilt angle of the liquid crystal 121 in the liquid crystal layer 12, so as to reduce the light leakage of the display panel 1 due to the deflection of part of the liquid crystal 121 when the display panel 1 is in the black state, and reduce the obstruction of the high terrain of the pixel electrode layer 132 to the deflection of the liquid crystal 121, so as to increase the display brightness of the display panel 1 when the display panel 1 is in the white state, thereby improving the display contrast of the display panel 1.

[0061] It should be noted that the two adjacent strip electrodes 1321 can be arranged at equal intervals to form a stable electric field in the liquid crystal layer 12, which can help to control the tilt angle of the liquid crystal 121 and reduce the difference in the distance between the strip electrodes 1321, which causes the liquid crystal 121 at different positions in the liquid crystal layer 12 to be affected by different magnitudes of the electric field, and causes the liquid crystal 121 to have different tilt angles, so that the display panel 1 has light leakage when displaying in black state due to the tilt of the liquid crystal 121, or reduces the possibility of the liquid crystal 121 being squeezed at a high altitude in white state, which causes the tilt angle of the liquid crystal 121 to be limited, and causes the liquid crystal 121 to block the backlight, thereby reducing the display brightness of the display panel 1. This can improve the display contrast of the display panel 1 and the uniformity of the display image of the display panel 1.

[0062] In the embodiment of the present disclosure, the order in which the filling portion 1322 and the strip electrode 1321 are formed may be different depending on the relationship between the thickness H1 of the filling portion 1322 and the thickness H2 of the strip electrode 1321 .

[0063] Specifically, when the thickness H1 of the flattened portion 1322 is equal to the thickness H2 of the strip electrode 1321, the flattened portion 1322 is not disposed between the strip electrode 1321 and the array functional layer 131, and the side of the flattened portion 1322 close to the liquid crystal layer 12 is flush with the side of the strip electrode 1321 close to the liquid crystal layer 12, and the side of the flattened portion 1322 away from the liquid crystal layer 12 is flush with the side of the strip electrode 1321 away from the liquid crystal layer 12. At this time, a plurality of strip electrodes 132 arranged at intervals can be first formed on the surface of the formed array functional layer 131. 1, and a filling portion 1322 is formed on the side of the strip electrode 1321, so that the side of the pixel electrode layer 132 close to the liquid crystal layer 12 is a horizontal plane, but not limited to this, the filling portion 1322 can also be first formed on the surface of the formed array function layer 131, and then a plurality of strip electrodes 1321 are arranged, the filling portion 1322 is arranged around the strip electrode 1321, and the side of the pixel electrode layer 132 close to the liquid crystal layer 12 is a horizontal plane, and the formation order of the filling portion 1322 and the strip electrode 1321 can be determined according to actual conditions.

[0064] When the thickness H1 of the filling portion 1322 is greater than the thickness H2 of the strip electrode 1321, the filling portion 1322 is simultaneously arranged between the strip electrode 1321 and the array functional layer 131, and on the side of the strip electrode 1321. At this time, the filling portion 1322 should be first formed on the surface of the array functional layer 131. The thickness of the filling portion 1322 can be set according to the potential difference of the side of the array functional layer 131 close to the pixel electrode layer 132 and the thickness of the strip electrode 1321. Then, the strip electrode 1321 is formed on the array functional layer 131 so that the side of the pixel electrode layer 132 close to the liquid crystal layer 12 is a horizontal plane.

[0065] For example, the thickness H1 of the flattened portion 1322 is equal to the thickness H2 of the strip electrode 1321, and the strip electrode 1321 is first formed on the array functional layer 131, and then the flattened portion 1322 is formed on the array functional layer 131. Figure 6 and Figure 7 As shown, the steps of forming the filling portion 1322 may be: after forming the strip electrodes 1321 on the surface of the array functional layer 131, a layer of filling material is coated on the surface of the array functional layer 131 to form a filling material film 1323, and the filling material film 1323 covers the surface of the array functional layer 131 and the strip electrodes 1321 (such as Figure 6As shown); a half-tone mask is formed on the side of the filling material film 1323 away from the array functional layer 131, and the half-tone mask has a first light-transmitting area covering the strip electrode 1321 and a second light-transmitting area covering the filling portion 1322; wherein the light transmittance of the first light-transmitting area is equal everywhere, the light transmittance of the second light-transmitting area is equal everywhere, and the light transmittance of the first light-transmitting area is greater than the light transmittance of the second light-transmitting area, and the filling material film 1323 is exposed and developed to form a completely removed area 1323a and a first retained area 1323b on the filling material film 1323, wherein the completely removed area 1323a The orthographic projection on the array functional layer 131 coincides with the orthographic projection of the first light-transmitting area on the array functional layer 131, and the orthographic projection of the first reserved area 1323b on the array functional layer 131 coincides with the orthographic projection of the second light-transmitting area on the array functional layer 131. The filling material film 1323 is etched to completely etch away the filling material film 1323 on the completely removed area 1323a, and partially etch away the filling material film 1323 on the first reserved area 1323b. The strip electrode 1321 is filled in the side periphery of the strip electrode 1321, and the side surface of the pixel electrode layer 132 close to the liquid crystal layer 12 is a horizontal plane (such as Figure 7 As shown), the potential difference of the pixel electrode layer 132 on one side close to the liquid crystal layer 12 is reduced, so as to reduce the possibility that the pixel electrode layer 132 causes the liquid crystal 121 in the liquid crystal layer 12 to tilt at different angles due to the potential difference, thereby reducing the light leakage problem caused by the tilt of the liquid crystal 121 when the display panel 1 is in a black state, and reducing the problem that the deflection angle of the liquid crystal 121 is limited when the display panel 1 is in a white state, thereby causing the liquid crystal 121 to block the backlight and reduce the display brightness of the display panel 1, thereby improving the display contrast of the display panel 1.

[0066] In addition, taking the example that the thickness H1 of the filling portion 1322 is greater than the thickness H2 of the strip electrode 1321, the thickness of the strip electrode 1321 is the same, and the side of the array functional layer 131 facing the pixel electrode layer 132 is a horizontal surface, the steps of forming the filling portion 1322 may be: coating a layer of filling material on the surface of the array functional layer 131 to form a filling material film 1323, the filling material film 1323 covering the surface of the array functional layer 131 (such as Figure 8As shown); a half-tone mask is formed on one side of the filling material film 1323 away from the array functional layer 131, the half-tone mask having a third light-transmitting area and a fourth light-transmitting area, and two adjacent third light-transmitting areas are spaced apart by the fourth light-transmitting area; wherein the light transmittance of the third light-transmitting area is equal everywhere, the light transmittance of the fourth light-transmitting area is equal everywhere, and the light transmittance of the third light-transmitting area is greater than the light transmittance of the fourth light-transmitting area, the filling material film 1323 is exposed and developed to form a second reserved area 1323c and a third reserved area 1323d on the filling material film 1323, wherein the orthographic projection of the second reserved area 1323c on the array functional layer 131 coincides with the orthographic projection of the third light-transmitting area on the array functional layer 131, and the third reserved area 1323d is The orthographic projection on the column functional layer 131 coincides with the orthographic projection of the fourth light-transmitting area on the array functional layer 131, and the filling material film 1323 is etched. After etching, the filling portion 1322 on the second reserved area 1323c is flush with the side away from the array functional layer 131, and the filling portion 1322 on the third reserved area 1323d is flush with the side away from the array functional layer 131, and the vertical distance from the side of the filling portion 1322 on the second reserved area 1323c away from the array functional layer 131 to the array functional layer 131 is greater than the vertical distance from the side of the filling portion 1322 on the third reserved area 1323d away from the array functional layer 131 to the array functional layer 131, so that the filling portion 1322 forms a pit at a position corresponding to the second reserved area 1323c (such as Fig. 9 The pits are separated by the filling portion 1322 located on the third reserved area 1323d, and strip electrodes 1321 are formed at the pits on the filling portion 1322. The side of the strip electrode 1321 away from the array functional layer 131 is flush with the side of the filling portion 1322 on the third reserved area 1323d away from the array functional layer 131 (as shown in FIG. Fig.10 and Fig.11 As shown), the potential difference of the pixel electrode layer 132 on one side close to the liquid crystal layer 12 is reduced, and the possibility that the pixel electrode layer 132 will cause the liquid crystal 121 in the liquid crystal layer 12 to tilt at different angles due to the potential difference is reduced, thereby reducing the light leakage problem caused by the tilt of the liquid crystal 121 when the display panel 1 is in a black state, and reducing the problem that the deflection angle of the liquid crystal 121 is limited when the display panel 1 is in a white state, thereby causing the liquid crystal 121 to block the backlight and reduce the display brightness of the display panel 1, thereby improving the display contrast of the display panel 1.

[0067] It should be noted that when the side of the array function layer 131 facing the pixel electrode layer 132 is a non-horizontal surface, or the thickness of the strip electrodes 1321 is different, a plurality of light-transmitting areas with different light transmittances can be provided on the half-tone mask according to the topography of the side of the array function layer 131 facing the pixel electrode layer 132 at different positions and the thickness of the strip electrodes 1321, so as to ensure that when the strip electrodes 1321 are provided on the flattened portion 1322, the side of each strip electrode 1321 facing away from the array function layer 131 is flush with the side of the flattened portion 1322 facing away from the array function layer 131 and the strip electrodes 1321 are flush with the side of the flattened portion 1322 facing away from the array function layer 131. The side of the electrode 1321 facing away from the array functional layer 131 is flush so as to reduce the potential difference of the side of the pixel electrode layer 132 close to the liquid crystal layer 12, and reduce the possibility that the pixel electrode layer 132 causes the liquid crystal 121 in the liquid crystal layer 12 to tilt at different angles due to the potential difference. This can reduce the light leakage problem caused by the tilt of the liquid crystal 121 when the display panel 1 is in a black state, and can reduce the problem that the deflection angle of the liquid crystal 121 is limited when the display panel 1 is in a white state, thereby causing the liquid crystal 121 to block the backlight and causing the display brightness of the display panel 1 to decrease, thereby improving the display contrast of the display panel 1.

[0068] Furthermore, the width of the filling portion 1322 is defined as W, which satisfies: 1um≤W≤5um. The specific value of the width W of the filling portion 1322 can be: 1um, 1.5um, 2um, 2.5um, 3um, 3.5um, 4um, 4.5um, 5um, etc., but is not limited to this, and can be determined according to actual conditions.

[0069] It should be noted that the width W of the above-mentioned filling portion 1322 refers to the width of the filling portion 1322 located between two adjacent strip electrodes 1321 (that is, the distance between two adjacent strip electrodes 1321). The width of the filling portion 1322 should not be less than 1um to reduce the possibility that the distance between two adjacent strip electrodes 1321 is too short, which causes the electric fields generated by the two adjacent strip electrodes 1321 to affect each other, and makes it difficult for the liquid crystal 121 to achieve the expected tilt angle, thereby affecting the display effect of the display panel 1; at the same time, the width of the filling portion 1322 should not be greater than 5um to reduce the situation that the number of strip electrodes 1321 is too small, resulting in the electric field strength of some liquid crystals 121 in the liquid crystal layer 12 being too weak, and causing the liquid crystal 121 to be unable to achieve the expected tilt angle, thereby affecting the display effect of the display panel 1.

[0070] In the embodiment of the present disclosure, the material of the filling portion 1322 can be silicon nitride or silicon oxide. Silicon nitride and silicon oxide have good oxidation resistance and insulation properties. By using silicon nitride or silicon oxide to make the filling portion 1322, an oxide protective film can be formed on the side of the array functional layer 131 close to the pixel electrode layer 132, thereby reducing the possibility of oxidation and corrosion of the array functional layer 131 due to contact with the outside air. At the same time, the filling portion 1322 can insulate between two adjacent electrodes 1321, thereby reducing the possibility of mutual interference between the electrical signals of the two adjacent electrodes 1321, thereby affecting the tilt angle of the liquid crystal 121. In addition, silicon nitride and silicon oxide also have high hardness, thereby reducing the possibility of collapse of the filling portion 1322 under external pressure, so as to keep the filling portion 1322 close to the liquid One side of the pixel electrode layer 132 is flush with the side of the strip electrode 1321 close to the liquid crystal layer 12, reducing the potential difference on the side of the pixel electrode layer 132 close to the liquid crystal layer 12 and the influence on the tilt angle of the liquid crystal 121, thereby reducing the problem of the liquid crystal 121 tilting at different angles during black display and causing light leakage of the display panel 1, and reducing the potential difference in the pixel electrode layer 132 and the restriction on the tilt angle of the liquid crystal 121, thereby reducing the blocking of the backlight by the liquid crystal 121 during white display, so as to improve the display brightness of the display panel 1 during white display, thereby improving the display contrast of the display panel 1, but not limited to this, the material of the filling portion 1322 can also be other inorganic materials or organic materials except silicon nitride and silicon oxide, which can be determined according to actual conditions.

[0071] Furthermore, the pixel structure 13 may also include an alignment layer 133, which is located on a side of the pixel electrode layer 132 away from the array function layer 131, and covers the pixel electrode layer 132. The alignment layer 133 has good control over the pre-tilt angle of the liquid crystal 121. With the cooperation of the alignment layer 133 and the strip electrodes 1321, the liquid crystals 121 in the liquid crystal layer 12 are arranged in a certain order and tilted at a certain angle under the action of the electric field, so that the display panel 1 can realize the display function.

[0072] In the embodiment of the present disclosure, the array functional layer 131 may include a substrate and a thin film transistor. The thin film transistor is located between the substrate and the pixel electrode layer 132 . The thin film transistor is used to connect the pixel electrode layer 132 and supply power to the pixel electrode layer 132 .

[0073] For example, a thin film transistor may include: a gate, an insulating layer, a semiconductor layer and a source and drain electrode, wherein the gate electrode is located on the side of the substrate facing the pixel electrode layer 132; the insulating layer is located on the side of the gate electrode facing away from the substrate, and the insulating layer covers the gate electrode; the semiconductor layer is located on the side of the insulating layer facing away from the substrate, and the semiconductor layer and the gate electrode are arranged correspondingly; the source and drain electrode are located on the side of the semiconductor layer facing away from the substrate, and the source and drain electrode are arranged correspondingly to the strip electrode 1321 and connected to the strip electrode 1321. Through the connection between the source and drain electrode and the strip electrode 1321, it is convenient to control the switch of the thin film transistor to supply power to the strip electrode 1321, so that the strip electrode 1321 forms an electric field on the liquid crystal layer 12, and drives the liquid crystal 121 to tilt at a certain angle, thereby realizing the display function of the display panel 1. However, it is not limited to this, and the thin film transistor may also include a passivation layer, a buffer layer, a light shielding layer and other structural layers, which may be determined according to actual conditions.

[0074] In the embodiment of the present disclosure, the color filter substrate 11 may include a common electrode, which is correspondingly arranged between the common electrode and the strip electrode 1321. When a voltage is applied to the strip electrode 1321, an electric field is formed on the liquid crystal layer 12 between the common electrode and the strip electrode 1321. Driven by the electric field, the liquid crystal 121 tilts, so that the tilt angle of the liquid crystal 121 can be controlled by controlling the magnitude of the voltage applied to the strip electrode 1321, thereby controlling the liquid crystal 121 to block or avoid the backlight, so as to realize the display function of the display panel 1. However, it is not limited to this, and the color filter substrate 11 may also include a color resistance layer, a reflective layer and other structural layers in addition to the common electrode, which may be determined according to actual conditions.

[0075] Furthermore, the display panel 1 has a plurality of sub-pixel regions, each of which includes an opening region and a non-opening region arranged around the opening region, the strip electrode 1321 is located in the opening region, and the filling portion 1322 is at least located in the opening region, so that at least one side of the pixel electrode layer 132 located in the opening region close to the liquid crystal layer 12 is a horizontal plane, so as to reduce the influence of the terrain difference of the pixel electrode layer 132 in the opening region on the tilt of the liquid crystal 121 in the opening region, thereby reducing the tilt of the liquid crystal 121 in the opening region at different angles when the black state is displayed, and causing the display panel 1 to leak light. The problem can be solved and the restriction of the potential difference of the pixel electrode layer 132 on the tilt angle of the liquid crystal 121 in the opening area can be reduced, thereby reducing the blocking of the backlight by the liquid crystal 121 in the opening area during white state display, so as to improve the display brightness during white state display, thereby improving the display contrast of the display panel 1, but not limited to this. The filling portion 1322 can also be arranged in the non-opening area, thereby reducing the light generated by the metal structure layer in the pixel structure 13 and the light entering the opening area after being scattered by the liquid crystal 121 in the non-opening area, thereby causing the display panel 1 in the black state to have light leakage.

[0076] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the feature. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0077] It should be noted that "upper", "lower", "left", "right" and the like are only used for distinction to facilitate description, and do not impose any directional limitation on the embodiments of the present invention. For example, the "upper" may actually be "lower", "left", "right" and other directions. In the present disclosure, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral whole; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium; it may be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0078] In the description of this specification, the description with reference to the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0079] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and cannot be construed as limitations on the present disclosure. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present disclosure. Therefore, any changes or modifications made in accordance with the claims and specification of the present disclosure shall fall within the scope covered by the patent of the present disclosure.

Claims

1. A pixel structure, characterized in that: include: Array functional layer; A pixel electrode layer is arranged on the surface of the array functional layer, and the pixel electrode layer includes a plurality of strip electrodes and a plurality of flattened portions. The strip electrodes are arranged at intervals, and a side of each strip electrode away from the array functional layer is flush with the flattened portion. The flattened portion is at least arranged between two adjacent strip electrodes, and a side of the flattened portion away from the array functional layer is flush with a side of the strip electrode away from the array functional layer.

2. The pixel structure according to claim 1, characterized in that: Define the thickness of the filled portion as H1, and the thickness of the strip electrode as H2, then: H2≤H1.

3. The pixel structure according to claim 1, characterized in that: The thickness of the filled portion is defined as H1, which satisfies: 50nm≤H1≤1000nm.

4. The pixel structure according to claim 1, characterized in that: The width of the filling portion is defined as W, which satisfies: 1um≤W≤5um.

5. The pixel structure according to claim 1, characterized in that: The material of the filling portion is silicon nitride or silicon oxide.

6. The pixel structure according to claim 1, characterized in that: The pixel structure comprises an alignment layer, wherein the alignment layer is located on a side of the pixel electrode layer away from the array function layer, and the alignment layer covers the pixel electrode layer.

7. The pixel structure according to any one of claims 1 to 6, characterized in that: The array function layer comprises: substrate; A thin film transistor is located between the substrate and the pixel electrode layer, and is used to connect the pixel electrode layer and supply power to the pixel electrode layer.

8. The pixel structure according to claim 7, characterized in that: The thin film transistor comprises: A gate electrode is located on a side of the substrate facing the pixel electrode layer; an insulating layer, located on a side of the gate facing away from the substrate, the insulating layer covering the gate; A semiconductor layer, located on a side of the insulating layer facing away from the substrate; The source and drain electrodes are located on a side of the semiconductor layer away from the substrate, and the source and drain electrodes are arranged corresponding to the strip electrodes and connected to the strip electrodes.

9. A display panel, characterized in that: It comprises a color filter substrate, a liquid crystal layer and a pixel structure as claimed in any one of claims 1 to 8, wherein the liquid crystal layer is located between the color filter substrate and the pixel structure, and the color filter substrate comprises a common electrode, which is arranged correspondingly between the common electrode and the strip electrodes.

10. The display panel according to claim 9, characterized in that: The display panel has a plurality of sub-pixel regions, each of the sub-pixel regions includes an opening region and a non-opening region arranged around the opening region, and the strip electrodes are located in the opening region.

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