TWI843567B - Display panel - Google Patents

Abstract

A display panel including a first substrate, a second substrate, a plurality of pixel structures, a planarization layer and a liquid crystal layer is provided. The first substrate and the second substrate are overlapped with each other. The pixel structures are disposed on the first substrate. The display panel is provided with a reflection area and a light transmission area in each pixel structure. Each pixel structure includes a transparent conductive pattern and a reflective electrode. The transparent conductive pattern overlaps the light transmission area, and has at least one opening. The reflective electrode is disposed in the reflection area. The planarization layer is disposed on the second substrate, and has a groove arranged in the light transmission area. The reflection area and the light transmission area are arranged in a first direction. The groove is arranged symmetrically with respect to a virtual plane. The virtual plane is perpendicular to the first direction. The at least one opening of the transparent conductive pattern is arranged symmetrically with respect to the virtual plane. The liquid crystal layer is disposed between the planarization layer and the pixel structures.

Description

Display Panel

The present invention relates to a display technology, and in particular to a display panel.

In response to the demand for energy conservation, a semi-transmissive and semi-reflective liquid crystal display panel has been proposed, and in order to increase the reflection efficiency, the reflective area of the display pixel is generally much larger than the light-transmitting area. In the current technology, the liquid crystal layer can achieve multiple arrangement directions in each display pixel by setting up a protruding structure to meet the needs of a wide viewing angle. However, the configuration space of the light-transmitting area is compressed as the resolution of the display panel continues to increase, resulting in the current protruding structure being unable to form a stable liquid crystal arrangement in the extremely narrow light-transmitting area, thereby affecting the transmittance. If the protruding structure is to be made smaller, it is difficult due to the limitations of the process and materials.

The present invention provides a display panel with better stability of liquid crystal arrangement.

The display panel of the present invention includes a first substrate, a second substrate, a plurality of pixel structures, a flat layer and a liquid crystal layer. The first substrate and the second substrate are overlapped with each other. A plurality of pixel structures are arranged on the first substrate. The display panel is provided with a reflective area and a light-transmitting area in each pixel structure. Each pixel structure includes a transparent conductive pattern and a reflective electrode. The transparent conductive pattern overlaps the light-transmitting area and has at least one opening. The reflective electrode is arranged in the reflective area. The flat layer is arranged on the second substrate, and a groove is arranged in the light-transmitting area. The reflective area and the light-transmitting area are arranged along a first direction. The groove is symmetrically arranged according to a virtual plane. The virtual plane is perpendicular to the first direction. At least one opening of the transparent conductive pattern is symmetrically arranged according to the virtual plane. The liquid crystal layer is arranged between the flat layer and the plurality of pixel structures.

In one embodiment of the present invention, the flat layer of the display panel has a first edge and a second edge defining a groove along a first direction. At least one opening includes a first opening. The transparent conductive pattern has a first opening edge and a second opening edge defining the first opening and opposite to each other along the first direction. The orthographic projection of the first edge on the transparent conductive pattern is located on a side of the first opening edge away from the second opening edge, and has a first distance from the first opening edge along the first direction. The orthographic projection of the second edge on the transparent conductive pattern is located on a side of the second opening edge away from the first opening edge, and has a second distance from the second opening edge along the first direction. The first distance is equal to the second distance.

In one embodiment of the present invention, the width of the first opening of the display panel along the first direction is greater than 1 micron.

In one embodiment of the present invention, the transparent conductive pattern of the display panel includes a first portion defining a first opening edge, a second portion defining a second opening edge, and at least one connecting portion connecting the first portion and the second portion. The width of each at least one connecting portion along the second direction is greater than 1 micron. The second direction is perpendicular to the first direction.

In one embodiment of the present invention, the first part, the second part and at least one connecting part of the display panel are symmetrically arranged along an axis, and the axis direction is perpendicular to the virtual plane.

In one embodiment of the present invention, at least one connecting portion of the display panel is a connecting portion. The connecting portion is connected to one side of the first portion and the second portion along the second direction.

In one embodiment of the present invention, at least one opening of the display panel further includes a second opening. The transparent conductive pattern has a third opening edge and a fourth opening edge along the second direction that define the second opening and are opposite to each other. The third distance between the third opening edge and the fourth opening edge along the second direction is greater than 1 micron.

In one embodiment of the present invention, the first edge and the second edge of the display panel extend in the second direction. The second direction is perpendicular to the first direction. At least one opening further includes a second opening. The first opening and the second opening are arranged along the second direction. The width of each of the first opening and the second opening along the second direction and the distance between the first opening and the second opening along the second direction are greater than 1 micron.

In one embodiment of the present invention, the transparent conductive pattern of the display panel includes a first portion defining a first opening, a second portion defining a second opening, and a connecting portion connecting the first portion and the second portion. The distance between the first portion and the second portion along the second direction is greater than 1 micron.

In one embodiment of the present invention, the transparent conductive pattern of the display panel extends from the light-transmitting area to the reflective area, and the reflective electrode directly covers the transparent conductive pattern.

In one embodiment of the present invention, the orthographic projection outline of at least one opening of the display panel on the first substrate includes a rectangle, a circle or an ellipse.

In one embodiment of the present invention, the flat layer of the display panel has a first inclined surface and a second inclined surface that define a groove and are opposite to each other. The angle between the first inclined surface and the second inclined surface and the surface of the second substrate is between 10 degrees and 70 degrees.

In one embodiment of the present invention, the ratio of the orthographic projection area of the transparent conductive layer of the display panel in the light-transmitting area on the first substrate to the orthographic projection area of the reflective electrode on the first substrate is between 0.01 and 0.5.

Based on the above, in a display panel of an embodiment of the present invention, a groove of a flat layer and a transparent conductive pattern with at least one opening are provided in the light-transmitting area of the pixel structure. Since the groove and the at least one opening are symmetrically arranged relative to a virtual plane, the arrangement state of the liquid crystal layer in the light-transmitting area can be more stable, which helps to improve the light transmittance of the pixel structure in the light-transmitting area.

10: Display panel

101: First substrate

102: Second substrate

102s: Surface

110: Covering layer

120: Flat layer

120e1: First edge

120e2: Second edge

120RS: Groove

150: Liquid crystal layer

180: Color filter layer

AX:Axis

CE: Common electrode layer

Da:Diameter

e1: first opening edge

e2: Second opening edge

IP: Virtual plane

IS1: First slope

IS2: Second slope

MS: Optical microstructure

OP1, OP1-A, OP1-B, OP1-C, OP1-D, OP1-E, OP1-G: First opening

OP2-C, OP2-E: Second opening

PA: Pixel Area

PT: convex structure

PX, PX-A, PX-B, PX-C, PX-D, PX-E, PX-F, PX-G: Pixel structure

RA: Reflex area

RE:Reflective electrode

REa: Part 1

REb: Part 2

REc:Connection part

S1, S1”: first spacing

S2, S2”: Second spacing

S3: The third distance

S4, S5, S6: Spacing

se1: first side edge

se2: Second side edge

TA: light-transmitting area

TCP, TCP-A, TCP-B, TCP-C, TCP-D, TCP-E, TCP-F, TCP-G: transparent conductive pattern

TCPa, TCPa”, TCPa-D, TCPa-E, TCPa-F, TCPa-G: Part I

TCPb, TCPb", TCPb-D, TCPb-E, TCPb-F, TCPb-G: Part II

TCPc, TCPc-A, TCPc-A1, TCPc-A2, TCPc-D1, TCPc-D2, TCPc-F, TCPc-G1, TCPc-G2: Connection part

TCPe: Extension

W1, W2, W1”: Width

X, Y, Z: direction

A-A’: section line

θ1, θ2: angle of intersection

FIG1 is a schematic front view of a display panel according to an embodiment of the present invention.

FIG2 is a schematic cross-sectional view of the display panel of FIG1.

Figures 3A to 3G are schematic front views of pixel structures according to some variant embodiments of the present invention.

The other technical contents, features and effects of the present invention mentioned above will be clearly presented in the detailed description of the preferred embodiment with reference to the following drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only referenced to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and are not used to limit the present invention.

FIG. 1 is a schematic front view of a display panel according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the display panel of FIG. 1 . FIG. 2 corresponds to the section line A-A’ of FIG. 1 . For the sake of clarity, FIG. 1 only shows the first substrate 101, the second substrate 102, the pixel structure PX, the protrusion structure PT and the flat layer 120 of FIG. 2 .

Referring to FIG. 1 and FIG. 2 , the display panel 10 includes a first substrate 101, a second substrate 102, a flat layer 120, a plurality of pixel structures PX, and a liquid crystal layer 150. The first substrate 101 and the second substrate 102 are overlapped with each other along the direction Z. The material of the substrate may include glass, quartz, polymer (such as polyimide, polycarbonate, polymethyl methacrylate), or other suitable plates. The liquid crystal layer 150 is disposed between the first substrate 101 and the second substrate 102.

In this embodiment, a plurality of pixel structures PX are disposed on the first substrate 101 and are respectively located in a plurality of pixel areas PA. For example, the display panel 10 may also be provided with a plurality of data lines (not shown), a plurality of scan lines (not shown) and a plurality of active elements (not shown) on the first substrate 101. These scan lines intersect with these data lines and define the plurality of pixel areas PA, wherein each pixel structure PX may be electrically connected to a data line and a scan line via an active element, but is not limited thereto.

It is particularly noted that each of the plurality of pixel regions PA can be divided into a reflective region RA and a light-transmitting region TA, wherein the light-transmitting region TA is provided with a transparent conductive pattern TCP of the pixel structure PX, and the reflective region RA is provided with a reflective electrode RE of the pixel structure PX. In this embodiment, a common electrode layer CE can be provided on the second substrate 102, and an electric field (not shown) formed between the common electrode layer CE and the reflective electrode RE (or the transparent conductive pattern TCP) can be used to drive a plurality of liquid crystal molecules (not shown) of the liquid crystal layer 150 to rotate and form an arrangement state corresponding to the electric field intensity, thereby modulating the polarization state of light (not shown) passing through the liquid crystal layer 150. By setting up the aforementioned multiple active elements, the driving electric field strength of each of the multiple pixel structures PX can be individually controlled so that the light passing through these pixel structures PX has the same or different light output intensities to achieve the image display effect.

The materials of the transparent conductive pattern TCP and the common electrode layer CE include metal oxides, such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, or other suitable materials, or a stacked layer of at least two of the above. The materials of the reflective electrode RE include metals, alloys, nitrides of metal materials, oxides of metal materials, oxynitrides of metal materials, or other suitable materials, or a stacked layer of metal materials and other conductive materials.

In the present embodiment, the transparent conductive pattern TCP may selectively extend from the light-transmitting area TA to the reflective area RA, and the reflective electrode RE directly covers the extended portion TCPe of the transparent conductive pattern TCP located in the reflective area RA, but is not limited thereto. For example, in the present embodiment, the orthographic projection of the extended portion TCPe of the transparent conductive pattern TCP located in the reflective area RA on the first substrate 101 may be located within the orthographic projection of the reflective electrode RE on the first substrate 101. More specifically, the extended portion TCPe of the transparent conductive pattern TCP may conform to the reflective electrode RE in the line of sight direction (e.g., direction Z), but is not limited thereto.

It is particularly noted that the ratio of the orthographic projection area of the transparent conductive pattern TCP located in the light-transmitting area TA on the first substrate 101 to the orthographic projection area of the reflective electrode RE on the first substrate 101 is between 0.01 and 0.5. In other words, the display panel 10 of this embodiment is, for example, a micro-transflective liquid crystal display panel in which the area of the light-transmitting area TA is significantly smaller than the area of the reflective area RA.

In this embodiment, the display panel 10 may further include a cover layer 110 disposed on the first substrate 101. For example, the aforementioned active element not shown may be disposed on the first substrate 101 and covered by the cover layer 110. In order to improve the light uniformity after the light is reflected in the reflection area RA, the cover layer 110 may be selectively provided with a plurality of optical microstructures MS on a portion of the surface of the reflection area RA, and the reflective electrode RE conformally covers these optical microstructures MS.

The material of the coating layer 110 may include inorganic materials (e.g., silicon oxide, silicon nitride, silicon oxynitride, other suitable materials, or a stacked layer of at least two of the above materials), organic materials (e.g., polyesters, polyolefins, polyacrylics, polycarbonates, polyepoxides, polystyrenes, polyethers, polyketones, polyols, polyaldehydes, or other suitable materials, or a combination thereof), or other suitable materials, or a combination thereof.

In this embodiment, the reflective electrode RE may include a first portion REa, a second portion REb and a connecting portion REc. The first portion REa and the second portion REb are arranged along the direction Y, and the connecting portion REc is connected between the first portion REa and the second portion REb (as shown in FIG. 1 ). In this embodiment, the orthographic projection outline of the first portion REa and the second portion REb on the first substrate 101 is, for example, a square or a rectangle, but is not limited thereto. It should be noted that in other embodiments not shown, the number of portions cut from the reflective electrode may be adjusted to one or more than three according to actual application requirements, and the present invention is not limited to the content disclosed in FIG. 1 .

Furthermore, the display panel 10 further includes a planar layer 120 disposed on the second substrate 102, and the common electrode layer CE is disposed on the planar layer 120. The material of the planar layer 120 may include an organic material (for example, polyester, polyolefin, polyacrylic, polycarbonate, polyoxyalkylene, polystyrene, polyether, polyketone, polyol, polyaldehyde, or other suitable materials, or a combination thereof), or other suitable materials, or a combination thereof.

In order to allow the liquid crystal molecules of the liquid crystal layer 150 to form a multi-domain arrangement state in the first part REa and the second part REb, a protrusion structure PT can be overlapped on each of the first part REa and the second part REb, and the orthographic projection of the protrusion structure PT on the first substrate 101 overlaps the geometric center of the orthographic projection of the first part REa (or the second part REb) on the first substrate 101. In this embodiment, the protrusion structure PT is disposed on the flat layer 120, and the common electrode layer CE is located between the flat layer 120 and the plurality of protrusion structures PT.

For example, in this embodiment, the liquid crystal layer 150 is a negative liquid crystal, and the multiple liquid crystal molecules not shown are arranged in a vertical alignment in the absence of an electric field. By providing the protruding structure PT, these liquid crystal molecules can be stably arranged in multiple directions.

Since the light-transmitting area TA of this embodiment is significantly smaller than the reflective area RA, the above-mentioned protruding structure PT cannot be set in the light-transmitting area TA. In order to allow the liquid crystal layer 150 to form a stable liquid crystal molecule arrangement in the light-transmitting area TA, the transparent conductive pattern TCP has at least one opening (e.g., the first opening OP1) in the light-transmitting area TA, and the at least one opening is symmetrically arranged according to the virtual plane IP.

It is particularly noted that the planar layer 120 is provided with a groove 120RS in the light-transmitting area TA, and the groove 120RS is symmetrically arranged according to the virtual plane IP, wherein the virtual plane IP is, for example, a virtual plane parallel to the XZ plane. That is, the symmetry axis of the orthographic projection of the groove 120RS on the first substrate 101 coincides with the symmetry axis of the orthographic projection of at least one opening of the transparent conductive pattern TCP on the first substrate 101. For example, in this embodiment, the plurality of grooves 120RS of the planar layer 120 are arranged along the direction Y and extend in the direction X. Each groove 120RS overlaps with the plurality of light-transmitting areas TA of the plurality of pixel structures PX arranged along the direction X.

The groove 120RS of the planar layer 120 and at least one opening of the transparent conductive pattern TCP are symmetrically arranged relative to the virtual plane IP, so that the arrangement state of the liquid crystal layer 150 in the light-transmitting area TA can be more stable, which helps to improve the light transmittance of the pixel structure PX in the light-transmitting area TA.

For example, in this embodiment, the transparent conductive pattern TCP has a first opening OP1 in the light-transmitting area TA, and includes a first portion TCPa, a second portion TCPb, and a connecting portion TCPc that define the first opening OP1. The first portion TCPa and the second portion TCPb of the transparent conductive pattern TCP can be arranged at intervals along the direction Y and define the first opening OP1. More specifically, the first portion TCPa and the second portion TCPb respectively have a first opening edge e1 and a second opening edge e2 that define the first opening OP1 and are opposite to each other along the direction Y.

In this embodiment, the planar layer 120 has a first edge 120e1 and a second edge 120e2 that define the groove 120RS and are opposite to each other along the direction Y. The orthographic projection of the first edge 120e1 on the transparent conductive pattern TCP is located on a side of the first opening edge e1 away from the second opening edge e2, and has a first distance S1 from the first opening edge e1 along the direction Y. The orthographic projection of the second edge 120e2 on the transparent conductive pattern TCP is located on a side of the second opening edge e2 away from the first opening edge e1, and has a second distance S2 from the second opening edge e2 along the direction Y. That is, the first opening edge e1 of the transparent conductive pattern TCP is closer to the first edge 120e1 of the planar layer 120, and the second opening edge e2 of the transparent conductive pattern TCP is closer to the second edge 120e2 of the planar layer 120.

It is particularly noted that the first distance S1 between the first opening edge e1 and the first edge 120e1 is equal to the second distance S2 between the second opening edge e2 and the second edge 120e2. The width W1 of the first opening OP1 along the direction Y (i.e., the distance between the first opening edge e1 and the second opening edge e2 along the direction Y) and the width W2 along the direction X are both greater than 1 micron. Since the first portion TCPa and the second portion TCPb are symmetrically arranged relative to the virtual plane IP, the first opening edge e1 and the second opening edge e2 are each symmetrically spaced from the virtual plane IP along the direction Y.

On the other hand, the connecting portion TCPc of the transparent conductive pattern TCP is connected between the first portion TCPa and the second portion TCPb. In this embodiment, the first portion TCPa, the second portion TCPb and the connecting portion TCPc can be symmetrically arranged along the axis AX, and the axis direction of the axis AX is perpendicular to the virtual plane IP (as shown in FIG. 1 ). More specifically, in this embodiment, the orthographic projection of the transparent conductive pattern TCP located in the light-transmitting area TA (i.e., the portion not covered by the reflective electrode RE) on the first substrate 101 is generally in an I-shape, but is not limited thereto.

In this embodiment, the flat layer 120 further has a first inclined surface IS1 and a second inclined surface IS2 that define the groove 120RS and are opposite to each other. The angles between the first inclined surface IS1 and the second inclined surface IS2 and the surface 102s of the second substrate 102 (such as the angles θ1 and θ2 in FIG. 2 ) are between 10 degrees and 70 degrees. It is particularly noted that if the angle is too small (for example, less than 10 degrees), the area ratio of the light-transmitting area TA and the reflective area RA will be affected, resulting in degradation of optical quality. If the angle is too large (for example, greater than 70 degrees), the liquid crystal molecules on the inclined surface will be tilted excessively, which will affect the stabilizing effect of the groove 120RS and the transparent conductive pattern TCP on the arrangement of the liquid crystal molecules in the light-transmitting area TA.

For example, the display panel 10 may further include a color filter layer 180 disposed between the second substrate 102 and the flat layer 120, but is not limited thereto. The color filter layer 180 may have a plurality of color filter patterns corresponding to a plurality of pixel structures PX, and these color filter patterns are respectively suitable for allowing light of different colors (such as red light, green light, and blue light) to pass through, thereby allowing the display panel 10 to achieve a color display effect.

The following will list some other embodiments to illustrate the present disclosure in detail, wherein the same components will be marked with the same symbols, and the description of the same technical content will be omitted. For the omitted parts, please refer to the aforementioned embodiments, and no further description will be given below.

FIG. 3A to FIG. 3G are schematic front views of pixel structures according to some variant embodiments of the present invention. Referring to FIG. 3A , the difference between the pixel structure PX-A of the present embodiment and the pixel structure PX of FIG. 1 is that the connection portion of the transparent conductive pattern is arranged differently. Specifically, in the pixel structure PX-A of FIG. 3A , the connection portion TCPc-A of the transparent conductive pattern TCP-A is arranged on one side (e.g., the right side) of the first opening OP1-A along the direction X, and is connected between the first portion TCPa and the second portion TCPb.

Please refer to FIG. 3B . The difference between the pixel structure PX-B of this embodiment and the pixel structure PX of FIG. 1 is that the number and the location of the connection parts of the transparent conductive pattern are different. Specifically, in the pixel structure PX-B of FIG. 3B , the transparent conductive pattern TCP-B has a first connection part TCPc-A1 and a second connection part TCPc-A2. These two connection parts are respectively arranged on opposite sides of the first opening OP1-B along the direction X, and each connects the first part TCPa and the second part TCPb.

Referring to FIG. 3C , the difference between the pixel structure PX-C of this embodiment and the pixel structure PX-B of FIG. 3B is that the transparent conductive pattern TCP-C of the pixel structure PX-C of FIG. 3C further includes a second opening OP2-C, and the extension direction of the second opening OP2-C is perpendicular to the extension direction of the first opening OP1-C. More specifically, the second opening OP2-C of the transparent conductive pattern TCP-C separates the first portion TCPa” and the second portion TCPb” along the direction Y. That is, the transparent conductive pattern TCP-C of this embodiment further has a third opening edge e3 and a fourth opening edge e4 that define the second opening OP2-C and are opposite to each other along the direction X. Preferably, the third distance S3 between the third opening edge e3 and the fourth opening edge e4 along the direction X (i.e., the width of the second opening OP2-C along the direction X) is greater than 1 micron.

Referring to FIG. 3D , the difference between the pixel structure PX-D of this embodiment and the pixel structure PX-B of FIG. 3B is that the opening profile of the transparent conductive pattern is different. Specifically, in the pixel structure PX-D of this embodiment, the first opening OP1-D defined by the first part TCPa-D, the second part TCPb-D, the first connecting part TCPc-D1 and the second connecting part TCPc-D2 of the transparent conductive pattern TCP-D has a circular orthographic projection profile on the first substrate. Preferably, the circular diameter Da of the first opening OP1-D and the first edge 120e1 and the second edge 120e2 of the flat layer 120 are respectively greater than 1 micron in the first distance S1” and the second distance S2” from the first opening OP1-D along the direction Y.

Referring to FIG. 3E , the difference between the pixel structure PX-E of this embodiment and the pixel structure PX-D of FIG. 3D is that the transparent conductive pattern TCP-E of the pixel structure PX-E of this embodiment further has a second opening OP2-E, and the second opening OP2-E and the first opening OP1-E are separated from each other in the direction X. In this embodiment, the transparent conductive pattern TCP-E can be distinguished into a first portion TCPa-E and a second portion TCPb-E arranged along the direction X and connected to each other, and the first portion TCPa-E and the second portion TCPb-E are respectively provided with a first opening OP1-E and a second opening OP2-E.

Preferably, the width of each of the first opening OP1-E and the second opening OP2-E along the direction X (e.g., the diameter Da) and the distance S4 between the first opening OP1-E and the second opening OP2-E along the direction X are greater than 1 micron. On the other hand, the first part TCPa-E and the second part TCPb-E of the transparent conductive pattern TCP-E respectively have a first side edge se1 and a second side edge se2 that are opposite to each other along the direction X, wherein the first opening OP1-E is closer to the first side edge se1, and the second opening OP2-E is closer to the second side edge se2. Preferably, the distance S5 between the first opening OP1-E and the first side edge se1 (or, the second opening OP2-E and the second side edge se2) along the direction X is greater than 1 micron.

Referring to FIG. 3F , the difference between the pixel structure PX-F of this embodiment and the pixel structure PX-E of FIG. 3E is that: in the pixel structure PX-F of this embodiment, the first part TCPa-F and the second part TCPb-F of the transparent conductive pattern TCP-F are separated from each other in the direction X. A connecting part TCPc-F is provided between the first part TCPa-F and the second part TCPb-F, and the connecting part TCPc-F connects the first part TCPa-F and the second part TCPb-F. Preferably, the spacing S6 between the first part TCPa-F and the second part TCPb-F along the direction X is greater than 1 micron. In this embodiment, the first part TCPa-F, the second part TCPb-F and the connecting part TCPc-F are symmetrically arranged according to the virtual plane IP.

Please refer to FIG. 3G . The difference between the pixel structure PX-G of this embodiment and the pixel structure PX-D of FIG. 3D is that the opening profile of the transparent conductive pattern is different. Specifically, in the pixel structure PX-G of FIG. 3G , the first opening OP1-G defined by the first part TCPa-G, the second part TCPb-G, the first connecting part TCPc-G1 and the second connecting part TCPc-G2 of the transparent conductive pattern TCP-G has an orthographic projection profile on the first substrate that is elliptical. Preferably, the width W1" of the first opening OP1-G along the direction Y, the first spacing S1 between the first opening edge e1 and the first edge 120e1 along the direction Y, and the second spacing S2 between the second opening edge e2 and the second edge 120e2 along the direction Y are all greater than 1 micron.

In summary, in a display panel of an embodiment of the present invention, a groove of a flat layer and a transparent conductive pattern with at least one opening are provided in the light-transmitting area of the pixel structure. Since the groove and the at least one opening are symmetrically arranged relative to a virtual plane, the arrangement state of the liquid crystal layer in the light-transmitting area can be more stable, which helps to improve the light transmittance of the pixel structure in the light-transmitting area.

10: Display panel

101: First substrate

102: Second substrate

120: Flat layer

120e1: First edge

120e2: Second edge

120RS: Groove

AX:Axis

e1: first opening edge

e2: Second opening edge

IP: Virtual plane

OP1: First opening

PA: Pixel Area

PT: convex structure

PX: Pixel structure

RA: Reflex area

RE:Reflective electrode

REa: Part 1

REb: Part 2

REc:Connection part

S1: First spacing

S2: Second spacing

TA: light-transmitting area

TCP: Transparent Conductive Pattern

TCPa: Part 1

TCPb: Part 2

TCPc: Connection part

W1, W2: Width

X, Y, Z: direction

A-A’: section line

Claims (12)

A display panel comprises: A first substrate and a second substrate, which are overlapped with each other; A plurality of pixel structures are arranged on the first substrate, and the display panel has a reflective area and a light-transmitting area in each of the pixel structures, and comprises: A transparent conductive pattern, which is overlapped with the light-transmitting area and has at least one opening; and A reflective electrode, which is arranged in the reflective area, wherein the ratio of the orthographic projection area of the transparent conductive pattern in the light-transmitting area on the first substrate to the orthographic projection area of the reflective electrode on the first substrate is between 0.01 and 0.5; A flat layer is disposed on the second substrate, the flat layer has a groove in the light-transmitting area, wherein the reflective area and the light-transmitting area are arranged along a first direction, the groove is symmetrically arranged according to a virtual plane, the virtual plane is perpendicular to the first direction, and the at least one opening of the transparent conductive pattern is symmetrically arranged according to the virtual plane; and a liquid crystal layer is disposed between the flat layer and the pixel structures. A display panel as described in claim 1, wherein the flat layer has a first edge and a second edge defining the groove along the first direction, the at least one opening includes a first opening, the transparent conductive pattern has a first opening edge and a second opening edge defining the first opening and opposite to each other along the first direction, the orthographic projection of the first edge on the transparent conductive pattern is located on a side of the first opening edge away from the second opening edge, and has a first distance from the first opening edge along the first direction, the orthographic projection of the second edge on the transparent conductive pattern is located on a side of the second opening edge away from the first opening edge, and has a second distance from the second opening edge along the first direction, and the first distance is equal to the second distance. A display panel as described in claim 2, wherein a width of the first opening along the first direction is greater than 1 micron. A display panel as described in claim 2, wherein the transparent conductive pattern includes a first portion defining the edge of the first opening, a second portion defining the edge of the second opening, and at least one connecting portion connecting the first portion and the second portion, and each of the at least one connecting portion has a width greater than 1 micron along a second direction, and the second direction is perpendicular to the first direction. A display panel as described in claim 4, wherein the first portion, the second portion and the at least one connecting portion are symmetrically arranged along an axis, and the axis direction is perpendicular to the virtual plane. A display panel as described in claim 4, wherein the at least one connecting portion is a connecting portion that connects the first portion and the second portion on one side along the second direction. A display panel as described in claim 2, wherein the at least one opening further includes a second opening, the transparent conductive pattern has a third opening edge and a fourth opening edge along a second direction that define the second opening and are opposite to each other, and a third distance between the third opening edge and the fourth opening edge along the second direction is greater than 1 micron. A display panel as described in claim 2, wherein the first edge and the second edge extend in a second direction, the second direction is perpendicular to the first direction, the at least one opening further includes a second opening, the first opening and the second opening are arranged along the second direction, and the width of the first opening and the second opening along the second direction and the distance between the first opening and the second opening along the second direction are both greater than 1 micron. A display panel as described in claim 8, wherein the transparent conductive pattern includes a first portion defining the first opening, a second portion defining the second opening, and a connecting portion connecting the first portion and the second portion, and a distance between the first portion and the second portion along the second direction is greater than 1 micron. A display panel as described in claim 1, wherein the transparent conductive pattern extends from the light-transmitting area to the reflective area, and the reflective electrode directly covers the transparent conductive pattern. A display panel as described in claim 1, wherein the orthographic projection outline of the at least one opening on the first substrate includes a rectangle, a circle, or an ellipse-like shape. A display panel as described in claim 1, wherein the flat layer has a first inclined surface and a second inclined surface that define the groove and are opposite to each other, and the angle between the first inclined surface and the second inclined surface and a surface of the second substrate is between 10 degrees and 70 degrees.

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