Array substrate and total reflection type liquid crystal display panel

Abstract

The present invention provides an array substrate and a total reflection type liquid crystal display panel, and by providing at least a partial uneven surface on the side of the planarization layer of this total reflection type liquid crystal display panel that is farther from the substrate, it is possible to provide a reflective electrode in an uneven shape along the uneven surface of the planarization layer, thereby changing the reflection direction of light within the panel and reflecting light that would not otherwise be reflected at the total reflection critical angle from the panel, thereby increasing the reflectivity of the total reflection type liquid crystal display panel.

Description

[Technical field]

[0001] The present invention relates to the technical field of displays, and in particular to an array substrate and a total reflection type liquid crystal display panel. [Background technology]

[0002] Traditionally, transmissive liquid crystal display technology has been the mainstay of liquid crystal display (LCD) panels. With the growing market demand for low-power outdoor displays, the market prospects for reflective liquid crystal displays are gradually improving.

[0003] Compared with transmissive LCD panels, reflective LCD panels have the advantages of being able to display images clearly under ambient light source scenes, not requiring a backlight, having a thin device body, and consuming low power, and therefore have good market prospects for application in the field of outdoor displays. Summary of the Invention [Problem to be solved by the invention]

[0004] Current reflective LCD TV panels face the general problem of low reflectivity, and the maximum mass production level that can be achieved in the current industry is within 10%. The main reason is that the light path of the reflective LCD panel is reflected in multiple passes, resulting in large energy loss, and ultimately only 10% of the incident light is emitted. Therefore, how to improve the reflectivity is an important issue facing current reflective LCD technology.

[0005] As described above, the conventional reflective liquid crystal display panel has a problem of low reflectance, and therefore, in order to improve this drawback, it is necessary to provide an array substrate and a total reflective liquid crystal display panel. [Means for solving the problem]

[0006] The embodiments of the present invention provide an array substrate and a total reflection type liquid crystal display panel, which can improve the reflectance of the total reflection type liquid crystal display panel.

[0007] An embodiment of the present invention comprises: A substrate; A drive circuit layer provided on the substrate; a planarization layer provided on a side of the drive circuit layer farther from the substrate, the planarization layer having at least a partially uneven surface on the side farther from the substrate; a reflective electrode layer provided on a side of the planarization layer remote from the substrate and provided in an uneven shape along the uneven surface of the planarization layer.

[0008] According to one embodiment of the present invention, the planarization layer has a plurality of convex or concave structures, which are distributed in an array on a side of the planarization layer away from the substrate.

[0009] According to one embodiment of the present invention, the convex structure has a convex arc surface, and an angle between a tangent to any one point on the arc surface and the flat surface of the planarizing layer is less than or equal to 10°.

[0010] According to one embodiment of the present invention, the concave structure has a concave arc surface, and an angle between a tangent line of any one point on the arc surface and the flat surface of the flattening layer is less than or equal to 10°.

[0011] According to one embodiment of the present invention, the plurality of protruding or recessed structures are distributed continuously or at intervals on the surface of the planarization layer facing away from the substrate.

[0012] According to one embodiment of the present invention, a plurality of the protruding structures are arranged in rows at intervals along a first direction, and a plurality of the protruding structures are arranged in columns at intervals along a second direction, the first direction being different from the second direction, Any two adjacent rows or columns of the protruding structures are provided in parallel, or any two adjacent rows or columns of the protruding structures are provided in a shifted manner.

[0013] According to one embodiment of the present invention, a plurality of the recessed structures are arranged in rows at intervals along a first direction, and a plurality of the recessed structures are arranged in columns at intervals along a second direction, the first direction being different from the second direction, Any two adjacent rows or columns of the recessed structures are provided in parallel, or any two adjacent rows or columns of the recessed structures are provided in a shifted manner.

[0014] According to an embodiment of the present invention, the shape of the convex structure or the concave structure is any one of a triangle, a rectangle, a pentagon, a hexagon, a circle, and an ellipse.

[0015] According to an embodiment of the present invention, the material of the reflective electrode layer includes a first electrode layer which is a metal or an alloy.

[0016] According to one embodiment of the present invention, the material of the first electrode layer includes any one or more of gold, silver, copper and aluminum alloy.

[0017] According to one embodiment of the present invention, the reflective electrode layer includes a second electrode layer and a third electrode layer, the first electrode layer is disposed between the second electrode layer and the third electrode layer, and the material of the second electrode layer and the third electrode layer is a transparent conductive metal oxide.

[0018] According to the array substrate according to the above embodiment of the present invention, the embodiment of the present invention includes the array substrate, a color filter substrate, and a liquid crystal layer disposed between the array substrate and the color filter substrate, and the array substrate includes: A substrate; A drive circuit layer provided on the substrate; a planarization layer provided on a side of the drive circuit layer farther from the substrate, the planarization layer having at least a partially uneven surface on the side farther from the substrate; The present invention further provides a total reflection type liquid crystal display panel including a reflective electrode layer provided on the side of the planarization layer remote from the substrate and provided in an uneven shape along the uneven surface of the planarization layer.

[0019] According to one embodiment of the present invention, the planarization layer has a plurality of convex or concave structures, which are distributed in an array on a side of the planarization layer away from the substrate.

[0020] According to one embodiment of the present invention, the convex structure has a convex arc surface, and an angle between a tangent to any one point on the arc surface and the flat surface of the planarizing layer is less than or equal to 10°.

[0021] According to one embodiment of the present invention, the concave structure has a concave arc surface, and an angle between a tangent line of any one point on the arc surface and the flat surface of the planarization layer is less than or equal to 10°.

[0022] According to one embodiment of the present invention, the plurality of protruding or recessed structures are distributed continuously or at intervals on the surface of the planarization layer facing away from the substrate.

[0023] According to one embodiment of the present invention, a plurality of the protruding structures are arranged in rows at intervals along a first direction, and a plurality of the protruding structures are arranged in columns at intervals along a second direction, the first direction being different from the second direction, Any two adjacent rows or columns of the protruding structures are provided in parallel, or any two adjacent rows or columns of the protruding structures are provided in a shifted manner.

[0024] According to one embodiment of the present invention, a plurality of the recessed structures are arranged in rows at intervals along a first direction, and a plurality of the recessed structures are arranged in columns at intervals along a second direction, the first direction being different from the second direction, Any two adjacent rows or columns of the recessed structures are provided in parallel, or any two adjacent rows or columns of the recessed structures are provided in a shifted manner.

[0025] According to an embodiment of the present invention, the shape of the convex structure or the concave structure is any one of a triangle, a rectangle, a pentagon, a hexagon, a circle, and an ellipse.

[0026] According to an embodiment of the present invention, the material of the reflective electrode layer includes a first electrode layer which is a metal or an alloy.

[0027] According to one embodiment of the present invention, the material of the first electrode layer includes any one or more of gold, silver, copper and aluminum alloy.

[0028] According to one embodiment of the present invention, the reflective electrode layer includes a second electrode layer and a third electrode layer, the first electrode layer is disposed between the second electrode layer and the third electrode layer, and the material of the second electrode layer and the third electrode layer is a transparent conductive metal oxide. Effect of the Invention

[0029] The beneficial effects of the embodiments of the present invention are as follows: The embodiments of the present invention provide an array substrate and a total reflective liquid crystal display panel. The total reflection type liquid crystal display panel includes an array substrate, a color filter substrate, and a liquid crystal layer, the array substrate includes a substrate, a driving circuit layer, a planarization layer, and a reflective electrode layer, and the planarization layer has at least a part of an uneven surface on the side farther from the substrate, so that a reflective electrode can be provided unevenly along the uneven surface of the planarization layer, and the reflection direction of light inside the panel can be changed, and light that cannot be reflected at the total reflection critical angle can be reflected from the panel, thereby increasing the reflectance of the total reflection type liquid crystal display panel. [Brief description of the drawings]

[0030] In order to more clearly describe the technical means in the embodiments or the prior art, the drawings necessary for the description of the embodiments or the prior art will be briefly described below. However, the drawings in the following description are merely some embodiments of the present invention, and it is obvious that those skilled in the art can derive other drawings from these drawings without creative efforts. [Figure 1] FIG. 1 is a schematic diagram showing the structure of a total reflection type liquid crystal display panel according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram of a convex structure according to an embodiment of the present invention. [Diagram 3] FIG. 3 is a schematic diagram showing the distribution of convex structures according to an embodiment of the present invention. [Figure 4] FIG. 4 is a schematic diagram showing the distribution of other convex structures according to an embodiment of the present invention. [Diagram 5] FIG. 5 is a schematic diagram of another convex structure according to an embodiment of the present invention. [Figure 6] FIG. 6 is a schematic diagram showing the structure of another total reflection type liquid crystal display panel according to an embodiment of the present invention. [Figure 7] FIG. 7 is a schematic diagram of a recessed structure according to an embodiment of the present invention. [Figure 8] FIG. 8 is a schematic diagram showing the structure of another total reflection type liquid crystal display panel according to an embodiment of the present invention. [Figure 9] FIG. 9 is a histogram showing the measured diffuse reflection results of a convex structure and a concave structure obtained during verification of an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] In the following, in order to illustrate specific embodiments for carrying out the present invention, each embodiment will be described with reference to the attached drawings. Directional terms referred to in the present invention, such as [upper], [lower], [front], [rear], [left], [right], [inner], [outer], and "side" are merely directions referring to the attached drawings. Therefore, the directional terms are used to explain and understand the present invention, and are not intended to limit the present invention. In the drawings, structurally similar elements are indicated by the same reference numerals.

[0032] The present invention will now be described in more detail with reference to the accompanying drawings and specific examples.

[0033] As shown in FIG. 1, FIG. 1 is a structural schematic diagram of a total reflection type liquid crystal display panel according to an embodiment of the present invention, and the liquid crystal display panel includes an array substrate 10, a color filter substrate 20 arranged opposite each other, and a liquid crystal layer 30 disposed between the array substrate 10 and the color filter substrate 20.

[0034] The array substrate 10 includes a substrate 11 which is a glass substrate, a driving circuit layer 12, a planarization layer 13, and a reflective electrode layer .

[0035] The driving circuit layer 12 is provided on one side of the substrate 11. Here, being provided on one side of the substrate 11 may mean that the driving circuit layer 12 is in direct contact with the surface of one side of the substrate 11, or may mean that the driving circuit layer 12 is in indirect contact with the substrate 11.

[0036] The driving circuit layer 12 includes a first metal layer 121, a gate insulating layer 122, a semiconductor layer 123, an ohmic contact layer 124, and a second metal layer 125, which are sequentially stacked on the substrate 11.

[0037] The first metal layer 121 may include a plurality of patterned gates and a plurality of scan lines extending along a first direction x and spaced apart in a second direction y, the scan lines being for transmitting scan control signals for controlling the on / off of thin film transistors.

[0038] The material of the first metal layer 121 may be any one or an alloy of a plurality of metal materials such as copper, aluminum, silver, molybdenum, titanium, magnesium, etc. The first metal layer 121 may be a single-layer metal thin film structure made of any one of the above metal materials or alloy materials, or may be a multi-layer metal thin film structure in which at least two of the above metal materials or alloy materials are sequentially laminated.

[0039] The gate insulating layer 122 is made of a transparent inorganic material, which may be any one or a combination of silicon nitride, silicon oxide, or silicon oxynitride.

[0040] The semiconductor layer 123 includes a plurality of semiconductor patterns disposed opposite to the gate, and the material of the semiconductor layer 123 is amorphous silicon (A-Si).

[0041] The second metal layer 125 includes a plurality of patterned sources and drains and a plurality of data lines extending along a second direction y and distributed at intervals in a first direction x, the data lines being data signals for charging the pixels.

[0042] The material of the second metal layer 125 may be any one or an alloy of a plurality of metal materials such as copper, aluminum, silver, molybdenum, titanium, magnesium, etc. The first metal layer 121 may be a single-layer metal thin film structure made of any one of the above metal materials or alloy materials, or may be a multi-layer metal thin film structure in which at least two of the above metal materials or alloy materials are sequentially laminated.

[0043] The planarization layer 13 is provided on the side of the drive circuit layer 12 farther from the substrate 11, and the side of the planarization layer 13 farther from the substrate 11 has at least a partial uneven surface. The reflective electrode layer 14 is provided on the side of the planarization layer 13 farther from the substrate 11 and is provided in an uneven shape along the uneven surface of the planarization layer 13, and the uneven shape of the reflective electrode layer 14 can change the reflection direction of light inside the panel, and can increase the reflectance of the total reflection type liquid crystal display panel by reflecting light that cannot be originally reflected at the total reflection critical angle from the panel.

[0044] In addition, in a partial region of the display panel, light incident from an external environmental light source into the display panel is reflected to the color filter substrate 20 via the reflective electrode layer 14. Since the angle of incidence of the light on the color filter substrate 20 is smaller than the critical angle, the light can be emitted from the color filter substrate 20. The surface of the planarization layer 13 that corresponds to this partial region and is farther from the substrate 11 can be provided as a flat surface. The reflective electrode layer 14 may be provided along the flat surface of the planarization layer 13 and be in a flat state.

[0045] In other partial regions of the display panel, when light incident from an external environmental light source into the display panel is reflected to the color filter substrate 20 via the reflective electrode layer 14, the incident angle of the light on the color filter substrate 20 is equal to or greater than the critical angle. Therefore, the light is totally reflected by the color filter substrate 20 and is also reflected by the reflective electrode layer 14, and cannot be emitted from the color filter substrate 20. After multiple reflections between the array substrate 10 and the color filter substrate 20, the light loss is large, and the ultimately emitted light is weak.

[0046] The surface of the planarization layer 13 farther from the substrate 11 corresponding to this partial region can be provided as an uneven surface so that the reflective electrode layer 14 provided along the uneven surface of the planarization layer 13 has an uneven shape. The uneven reflective electrode layer 14 changes the reflection direction of the light in this portion, and the light is no longer totally reflected between the array substrate 10 and the color filter substrate 20. The light that originally cannot be emitted at the total reflection critical angle is reflected from the panel, and the reflectance of the total reflection type liquid crystal display panel can be increased.

[0047] Furthermore, the planarization layer 13 has a plurality of convex structures 131 or concave structures 132, which are distributed in an array on the side of the planarization layer away from the substrate, thereby defining the uneven surface.

[0048] 1, a plurality of convex structures 131 are provided on the surface of the planarization layer 13 farther from the substrate 11, and the plurality of convex structures 131 protrude from the flat surface of the planarization layer 13 toward the side farther from the substrate 11, thereby defining an uneven surface of the planarization layer 13 farther from the substrate 11. The reflective electrode layer 14 is laid on the surface of the planarization layer 13 farther from the substrate 11, and is uneven at locations corresponding to the plurality of convex structures 131.

[0049] The color filter substrate 20 includes an opposing substrate 21, a color filter layer 22 provided on the opposing substrate 21 closer to the array substrate 10, a protective layer 23, a common electrode 24, and a spacer 25. The color filter layer 22 includes a red filter layer 221, a green filter layer 222, a blue filter layer 223, and a black matrix 224 arranged in an array, and the black matrix 224 separates the red filter layer 221, the green filter layer 222, and the blue filter layer 223 from each other to prevent color mixing. The red filter layer 221, the green filter layer 222, and the blue filter layer 223 can transmit light of the corresponding color.

[0050] In one embodiment, the convex structures 131 may be provided corresponding to the red filter layer 221, the green filter layer 222, and the blue filter layer 223, respectively. The light from the external environment passing through the red filter layer 221, the green filter layer 222, and the blue filter layer 223 enters the inside of the panel, is reflected by the reflective electrode layer 14, and then passes through the red filter layer 221, the green filter layer 222, and the blue filter layer 223 to exit the inside of the panel, thereby reflecting the ambient light by the reflective electrode layer 14 to realize the color display of the total reflective LCD panel.

[0051] In one embodiment, the side of the planarization layer 13 farther from the substrate 11 may be entirely uneven, and thus the reflective electrode layer 14 provided on the planarization layer 13 may be uneven.

[0052] Furthermore, the convex structure may have a convex arcuate surface, and an angle between a tangent to any one point on the arcuate surface and the flat surface of the planarizing layer may be 10° or less.

[0053] As shown in Figure 2, Figure 2 is a schematic diagram of a convex structure according to an embodiment of the present invention, and the convex structure 131 has a convex arcuate surface 130 facing away from the substrate 11, and the angle α between a tangent to any point on the arcuate surface 130 and the flat surface of the planarization layer 13 may be 10°, 8°, 6°, 4°, etc.

[0054] Preferably, the angle α between a tangent to any one point on the arcuate surface 130 and the flat surface of the flattening layer 13 is 4° to 10°.

[0055] In one embodiment, the lengths of the plurality of convex structures 131 in the first direction x or the second direction y and the heights of the convex structures in the third direction z are equal to each other. In some other embodiments, the lengths of the plurality of convex structures 131 in the first direction x or the second direction y and the heights of the convex structures in the third direction z may not be equal to each other, and this is not a limitation here.

[0056] In an embodiment of the present invention, the first direction x may be a horizontal direction, the second direction y may be a vertical direction, the third direction z may be perpendicular to the first direction x and the second direction y, and the third direction z may be a thickness direction of the total reflection type liquid crystal display panel.

[0057] In one embodiment, as shown in FIG. 1, a plurality of the convex structures 131 are continuously distributed on the surface of the planarization layer 13 away from the substrate 11, and the minimum distance between adjacent convex structures 131 is zero.

[0058] In one embodiment, as shown in Fig. 3, which is a schematic diagram of a distribution of convex structures according to an embodiment of the present invention, a plurality of the convex structures 131 are distributed at intervals on the surface of the planarization layer 13 away from the substrate 11. The distances between adjacent convex structures 131 may be equal or unequal.

[0059] Furthermore, the minimum distance d between adjacent convex structures 131 may be greater than 0 μm and equal to or less than 30 μm. The smaller the distance between adjacent convex structures 131, the more improved the diffuse reflection effect of the reflective electrode layer 14 on light. The minimum distance between adjacent convex structures 131 may be, for example, 2 μm, 6 μm, 8 μm, 10 μm, 15 μm, 18 μm, 20 μm, 25 μm, or 30 μm.

[0060] In one embodiment, as shown in FIG. 3, a plurality of the convex structures 131 are arranged in rows at intervals along a first direction x, and a plurality of the convex structures 131 are arranged in columns at intervals along a second direction y different from the first direction x.

[0061] It should be noted that FIG. 3 only shows 4 rows x 5 columns of convex structures 131, and does not indicate the size and number of the convex structures 131 during actual use.

[0062] In one embodiment, as shown in FIG. 3, the convex structures 131 of any two adjacent rows are arranged in parallel, and the convex structures 131 of any two adjacent columns are also arranged in parallel.

[0063] In one embodiment, as shown in FIG. 4, FIG. 4 is a schematic distribution diagram of another convex structure according to an embodiment of the present invention, in which any two adjacent rows of the convex structures 131 are offset, and any two adjacent columns of the convex structures 131 are also offset.

[0064] Furthermore, the shape of the convex structure 131 is any one of a triangle, a rectangle, a pentagon, a hexagon, a circle, and an ellipse.

[0065] In one embodiment, as shown in FIG. 3, the planar shape of the convex structure 131 may be circular, and the plane may be parallel to the first direction x and the second direction y.

[0066] In one embodiment, as shown in FIG. 5, which is a schematic diagram of another convex structure according to an embodiment of the present invention, the convex structure 131 may be a hexagon.

[0067] In some other embodiments, the convex structure 131 may be any of a triangular, rectangular, pentagonal, hexagonal, or other polygonal shape, or an elliptical shape, and the like.

[0068] In one embodiment, as shown in Figure 6, Figure 6 is a structural schematic diagram of another total reflection type liquid crystal display panel according to an embodiment of the present invention, and the structure is almost the same as the structure shown in Figure 1, but differs in that a plurality of concave structures 132 are provided on the surface of the planarization layer 13 away from the substrate 11, and the plurality of concave structures 132 are recessed toward the side away from the substrate 11 to define an uneven surface of the planarization layer 13 away from the substrate 11, and the reflective electrode layer 14 is laid on the surface of the planarization layer 13 away from the substrate 11 and is uneven at locations corresponding to the plurality of concave structures 132.

[0069] In an embodiment, the concave structures 132 may be provided corresponding to the red filter layer 221, the green filter layer 222, and the blue filter layer 223, respectively. The light from the external environment entering the inside of the panel through the red filter layer 221, the green filter layer 222, and the blue filter layer 223 is reflected by the reflective electrode layer 14, and then exits the inside of the panel through the red filter layer 221, the green filter layer 222, and the blue filter layer 223, so that the reflective electrode layer 14 reflects the ambient light to realize the color display of the total reflection type LCD panel.

[0070] In one embodiment, the side of the planarization layer 13 farther from the substrate 11 may be entirely uneven, and thus the reflective electrode layer 14 provided on the planarization layer 13 may be uneven.

[0071] Furthermore, the recessed structure has a recessed arcuate surface, and the angle between a tangent to any one point on the arcuate surface and the flat surface of the planarizing layer is 10° or less.

[0072] As shown in Figure 7, Figure 7 is a schematic diagram of a concave structure according to an embodiment of the present invention, where the concave structure 132 has a concave arcuate surface 130 toward the substrate 11, and the angle α between a tangent to any point on the arcuate surface 130 and the flat surface of the planarization layer 13 may be 10°, 8°, 6°, 4°, etc.

[0073] Preferably, the angle α between a tangent to any one point on the arcuate surface 130 and the flat surface of the flattening layer 13 is 4° to 10°.

[0074] In one embodiment, the lengths of the plurality of recessed structures 132 in the first direction x or the second direction y and the recessed depths in the third direction z are equal to each other. In some other embodiments, the lengths of the plurality of recessed structures 132 in the first direction x or the second direction y and the recessed depths in the third direction z may not be equal to each other, and this is not a limitation here.

[0075] In one embodiment, as shown in FIG. 6, a plurality of the recessed structures 132 are continuously distributed on the surface of the planarization layer 13 away from the substrate 11, and the minimum distance between adjacent recessed structures 132 is zero.

[0076] In one embodiment, the recessed structures 132 are distributed at intervals on the surface of the planarization layer 13 away from the substrate 11, and the distance between adjacent recessed structures 132 may be equal or unequal.

[0077] Furthermore, the minimum distance between adjacent recessed structures 132 may be greater than 0 μm and less than or equal to 30 μm. The smaller the distance between adjacent recessed structures 132, the more improved the diffuse reflection effect of the reflective electrode layer 14. The minimum distance between adjacent recessed structures 132 may be, for example, 2 μm, 6 μm, 8 μm, 10 μm, 15 μm, 18 μm, 20 μm, 25 μm, or 30 μm.

[0078] In one embodiment, a plurality of the recessed structures 132 are arranged in rows at intervals along a first direction x, and a plurality of the recessed structures 132 are arranged in columns at intervals along a second direction y different from the first direction x.

[0079] In one embodiment, the recessed structures 132 of any two adjacent rows are arranged in parallel, and the recessed structures 132 of any two adjacent columns are also arranged in parallel.

[0080] In one embodiment, the recessed structures 132 of any two adjacent rows are staggered, and the recessed structures 132 of any two adjacent columns are also staggered.

[0081] Furthermore, the shape of the recessed structure 132 is either triangular, rectangular, pentagonal, hexagonal, circular or elliptical.

[0082] In one embodiment, the concave structure 132 has a circular planar shape, and the plane is parallel to the first direction x and the second direction y.

[0083] In one embodiment, the recessed structure 132 may be hexagonal.

[0084] In some other embodiments, the recessed structures 132 may be any of a triangular, rectangular, pentagonal, hexagonal, or other polygonal shape, an elliptical shape, and the like.

[0085] In an embodiment of the present invention, the material of the planarization layer 13 may be tetrafluoroethylene-perfluoroalkoxyethylene copolymer (perfluoroalkoxy, PFA) or an organic material commonly used in planarization layers (PLN) in conventional display panels.

[0086] In an actual manufacturing process, first, the planarization layer 13 is formed by coating or vapor deposition. Then, the side of the planarization layer 13 farther from the substrate 11 is etched to form an uneven surface at least partially having the convex structure 131 or the concave structure 132. Then, the reflective electrode layer 14 is manufactured and formed on the surface of the planarization layer 13 farther from the substrate 11, and the portions of the reflective electrode layer 14 corresponding to the uneven surface may be provided in an uneven shape.

[0087] Furthermore, the reflective electrode layer 14 includes a first electrode layer 141 whose material is a metal or an alloy. 1, the reflective electrode layer 14 includes only a first electrode layer 141 made of a single layer of metal or alloy material. The material of the first electrode layer 141 may be a metal that is difficult to oxidize, such as gold, or other alloy material, such as stainless steel. In this way, without providing guard electrodes on both the upper and lower sides of the first electrode layer 141, the structure of the reflective electrode layer 14 can be simplified, and the difficulty and thickness of the manufacturing process of the total reflection type liquid crystal display panel can be reduced.

[0088] In one embodiment, the reflective electrode layer 14 includes a first electrode layer 141, a second electrode layer 142, and a third electrode layer 143, and the first electrode layer 141 is disposed between the second electrode layer 142 and the third electrode layer 143.

[0089] As shown in FIG. 8, FIG. 8 is a structural schematic diagram of another total reflection type liquid crystal display panel according to an embodiment of the present invention, and the structure is almost the same as the structure shown in FIG. 1, but differs in that the reflective electrode layer 14 includes a first electrode layer 141, a second electrode layer 142, and a third electrode layer 143, the second electrode layer 142 is provided on the surface of the planarization layer 13 farther from the substrate 11, the first electrode layer 141 is provided on the surface of the second electrode layer 142 farther from the substrate 11, the third electrode layer 143 is provided on the surface of the first electrode layer 141 farther from the second electrode layer 142, and the first electrode layer 141, the second electrode layer 142, and the third electrode layer 143 are each provided in an uneven shape corresponding to the convex structure 131.

[0090] The material of the first electrode layer 141 may be a metal or an alloy material. Specifically, the material of the first electrode layer 141 may be any one of copper, aluminum, and silver, or an alloy containing these metals.

[0091] The second electrode layer 142 and the third electrode layer 143 are both made of a transparent conductive metal oxide. By providing the second electrode layer 142 and the third electrode layer 143 on both the upper and lower sides of the first electrode layer 141, respectively, the first electrode layer 141 is protected and corrosion of the first electrode layer 141 due to oxidation is prevented.

[0092] Specifically, the transparent conductive metal oxide may be indium tin oxide (ITO).

[0093] As shown in FIG. 9, FIG. 9 is a histogram showing the diffuse reflection results of the actual measurements of the convex structure and the concave structure obtained when verifying the embodiment of the present invention. When a convex structure 131 is provided on the surface of the planarization layer 13 away from the substrate 11, the specular component exclude reflectance (specular component exclude, SCE) is 30.75%. When a concave structure 132 is provided on the surface of the planarization layer 13 away from the substrate 11, the specular component exclude reflectance is 32.69. When the surface of the planarization layer 13 away from the substrate 11 is a flat surface, the specular component exclude reflectance is 0.31%. As described above, by providing a convex structure 131 or a concave structure 132 on the surface of the planarization layer 13 away from the substrate 11, the reflective electrode layer 14 can be provided in an uneven shape, the reflection direction of light inside the panel can be changed, and light that cannot originally be emitted at the total reflection critical angle can be emitted from the panel, thereby increasing the reflectance of the total reflection type liquid crystal display panel.

[0094] According to the display panel according to the above embodiment of the present invention, the embodiment of the present invention further provides an electronic device including the display panel according to the above embodiment. The electronic device may be, for example, a mobile terminal such as a color electronic paper, a color electronic book, or a smartphone. The electronic device may be, for example, a wearable terminal such as a smart watch or a smart band. The electronic device may be, for example, a fixed terminal such as a color electronic signboard or a color electronic poster.

[0095] The beneficial effects of the embodiments of the present invention are as follows: The embodiments of the present invention provide a total reflective liquid crystal display panel. The total reflection type liquid crystal display panel includes an array substrate, a color filter substrate, and a liquid crystal layer. The array substrate includes a substrate, a driving circuit layer, a planarization layer, and a reflective electrode layer. By providing at least a portion of an uneven surface on the side of the planarization layer away from the substrate, the reflective electrode can be provided in an uneven shape along the uneven surface of the planarization layer. This changes the reflection direction of light within the panel, and causes light that cannot be reflected at the total reflection critical angle to be reflected from the panel, thereby increasing the reflectivity of the total reflection type liquid crystal display panel.

[0096] As described above, the present invention has been described with reference to preferred embodiments. However, the preferred embodiments are not intended to limit the present invention, and a person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is determined by the claims.

Claims

1. A substrate; A drive circuit layer provided on the substrate; a planarization layer provided on a side of the drive circuit layer farther from the substrate, the planarization layer having at least a partially uneven surface on the side farther from the substrate; a reflective electrode layer provided on a side of the planarization layer farther from the substrate and provided in an uneven shape along the uneven surface of the planarization layer; The planarization layer has a plurality of convex structures, A plurality of the protruding structures are provided on the flat surface of the planarization layer and are continuously distributed on a side of the planarization layer farther from the substrate, the convex structure has a convex arc surface, and an angle between a tangent to any one point on the arc surface and a flat surface of the planarization layer is 10° or less; The material of the planarization layer is PFA. Array board.

2. A plurality of the protruding structures are distributed in an array on a side of the planarization layer farther from the substrate. The array substrate according to claim 1 .

3. The plurality of convex structures are arranged in rows at intervals along a first direction, and the plurality of convex structures are arranged in columns at intervals along a second direction, the first direction being different from the second direction, and any two adjacent rows or columns of the convex structures are arranged in parallel, or any two adjacent rows or columns of the convex structures are arranged offset from each other. The array substrate according to claim 1 .

4. The shape of the convex structure is any one of a triangle, a rectangle, a pentagon, a hexagon, a circle, and an ellipse. The array substrate according to claim 2 .

5. The reflective electrode layer includes a first electrode layer whose material includes any one of gold, silver, copper, and aluminum, or an alloy of a plurality of these. The array substrate according to claim 1 .

6. the reflective electrode layer includes a second electrode layer and a third electrode layer, the first electrode layer is provided between the second electrode layer and the third electrode layer; the material of the second electrode layer and the third electrode layer is a transparent conductive metal oxide; 6. The array substrate according to claim 5.

7. 7. A liquid crystal display device comprising: an array substrate according to claim 1; a color filter substrate, and a liquid crystal layer provided between the array substrate and the color filter substrate, the array substrate and the color filter substrate being disposed opposite each other; Totally reflective LCD panel.

Images