CN104698697B - Pixel structure and display panel - Google Patents

Abstract

The present invention discloses a pixel structure, which includes a substrate having a surface, an insulating layer and a pixel electrode. The insulating layer defines a first area and a second area surrounding the first area. The first area has a first area top surface and the second area has a second area top surface. The first distance from the top surface of the first area to the surface is less than the second distance from the top surface of the second area to the surface. The pixel electrode extends continuously from the top surface of the first area to the top surface of the second area, wherein the pixel electrode has a trunk opening and a plurality of slit openings connected to the trunk opening. The trunk openings are distributed along a cross-shaped track to divide a plurality of alignment areas. The slit openings in the same alignment area are parallel to each other and define a stripe portion of the pixel electrode between two adjacent slit openings, and the intersection of the cross-shaped track is located in the first area. A display panel is also provided.

Description

Pixel structure and display panel

technical field

The present invention relates to a pixel structure and a display panel, and in particular to a pixel structure that helps to improve light transmittance and a display panel using the pixel structure.

Background technique

Currently, the performance requirements of the market for LCD panels include high contrast ratio, no gray scale inversion, low color shift, high luminance, and high color saturation. , quick response and wide viewing angle. At present, the technologies that can meet the requirement of wide viewing angle include Twisted Nematic (TN) liquid crystal with wide viewing film (wide viewing film), in-plane switching (In-Plane Switching, IPS) liquid crystal display panel, marginal field switching Type (Fringe Field Switching) liquid crystal display panel, multi-domain vertical alignment (Multi-domain Vertical Alignment, MVA) liquid crystal display panel, etc.

In the existing multi-domain vertical alignment liquid crystal display panel, the pixel electrodes form a plurality of slit openings, thereby controlling the liquid crystal molecules in the liquid crystal layer to fall in various directions, so as to achieve the purpose of wide viewing angle. However, liquid crystal molecules will experience different electric field magnitudes and directions under the action of a non-uniform electric field, causing some liquid crystal molecules to fall in unexpected directions, and produce undesired dislocation lines ( disclination line) and disclination node, thereby affecting the light transmittance of the display panel.

Contents of the invention

The invention provides a pixel structure, which helps to improve the light transmittance.

The present invention provides a display panel, which adopts the above-mentioned pixel structure and has ideal light transmittance.

A pixel structure of the present invention includes a substrate, an insulating layer and a pixel electrode. The substrate has a surface. The insulating layer is disposed on the substrate to define a first area and a second area, and the second area surrounds the first area, wherein the first area has a top surface of the first area and the second area has a top surface of the second area. A first distance from the top surface of the first region to the surface is smaller than a second distance from the top surface of the second region to the surface. The pixel electrode is arranged on the substrate, and at least part of the area of the pixel electrode extends continuously from the top surface of the first region to the top surface of the second region, wherein the pixel electrode has a trunk opening and a plurality of slit openings connected to the trunk opening. The backbone openings are distributed along a cross-shaped track to define multiple alignment regions. The slit openings in the same alignment area are parallel to each other to define a stripe portion of the pixel electrode between two adjacent slit openings, and the intersection of the cross-shaped tracks is located in the first area.

A display panel of the present invention includes the above-mentioned plurality of pixel structures and a liquid crystal layer. The liquid crystal molecules in the liquid crystal layer are driven by the pixel structure, and driven by the pixel structure, the liquid crystal molecules are all dumped to the second area.

Based on the above, the pixel structure of the embodiment of the present invention utilizes the design that the edge of the pixel electrode is higher than the center, so that the liquid crystal molecules can be stably tilted outward during driving, which helps to improve the light transmittance, and makes the pixel structure using the above design The display panel can have ideal light transmittance.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

Description of drawings

FIG. 1A is a schematic top view of a pixel structure according to an embodiment of the present invention.

FIG. 1B is a partially enlarged schematic diagram of an embodiment of the pixel structure in FIG. 1A .

FIG. 1C and FIG. 1D are schematic cross-sectional views along the section lines I-I and II-II in FIG. 1B , respectively.

FIG. 1E is another embodiment of the area C in FIG. 1C .

FIG. 2A is a partially enlarged schematic view of another embodiment of the pixel structure in FIG. 1A .

FIG. 2B and FIG. 2C are schematic cross-sectional views along line III-III and IV-IV in FIG. 2A , respectively.

3 to 10 are partial enlarged schematic diagrams of the pixel structure in FIG. 1A in other embodiments, respectively.

FIG. 11 is a schematic cross-sectional view of a display panel according to an embodiment of the present invention.

Among them, reference signs:

10: Display panel

14: Liquid crystal layer

16: opposite substrate

12, 100, 100A, 100B, 100C, 100D, 100E, 100F, 100G, 100H, 100I: pixel structure

110: Substrate

120: insulating layer

130, 130A, 130B, 130C, 130D, 130E, 130F, 130G: pixel electrodes

132: Stripe department

134, 134A, 134B, 134C: peripheral connection part

136: Corner pattern department

138, 138A, 138B: trunk connection part

A1, A1': the first area

A11': Center

A12': Protrusion

A2: The second area

A3: Junction area

AA: Alignment Area

AD: active element

B: Junction

CE: common electrode layer

CH: channel layer

D1: first distance

D2: second distance

DE: Drain

DL: data line

E: edge

G: Gap

GE: Gate

I-I, II-II, III-III, IV-IV: broken lines

IC: inner contour

IT, W, W1, W2, W3, W4, W5: Width

OC: outer contour

PL, PW: component

S1: surface

SE: source

SL: scan line

SO: slit opening

SUB: light-transmitting substrate

T1: the top surface of the first zone

T2: the top surface of the second zone

T3: sloped surface

TO: trunk opening

TP: turning point

U: storage space

X: intersection

θ: included angle

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

FIG. 1A is a schematic top view of a pixel structure according to an embodiment of the present invention. FIG. 1B is a partially enlarged schematic diagram of an embodiment of the pixel structure in FIG. 1A . FIG. 1C and FIG. 1D are schematic cross-sectional views along the section lines I-I and II-II in FIG. 1B , respectively. Referring to FIGS. 1A to 1D , the pixel structure 100 includes a substrate 110 , an insulating layer 120 and a pixel electrode 130 . The substrate 110 can be a glass substrate, a silicon substrate, a flexible plastic substrate, or any known substrate that can be used in making display panels. The substrate 110 has a surface S1. The insulating layer 120 and the pixel electrode 130 are disposed on the surface S1, and the insulating layer 120 and the pixel electrode 130 are not limited to being in direct contact with the surface S1.

Specifically, other film layers or components may be formed on the surface S1 before the insulating layer 120 and the pixel electrode 130 are formed. For example, before forming the pixel electrode 130, the scan line SL, the data line DL and the active device AD may be formed on the surface S1. The scan lines SL and the data lines DL intersect with each other, and for example, are perpendicular to each other but do not touch each other. The active device AD is electrically connected to the scan line SL, the data line DL and the pixel electrode 130 respectively.

As shown in Figure 1A, the active device AD has a gate GE, a channel layer CH, a source SE and a drain DE, wherein the gate GE is connected to the scan line SL, the source SE is connected to the data line DL and the drain DE is connected to on the pixel electrode 130 . The gate GE in the active device AD must be separated from the channel layer CH without contact, the scan line SL and the data line DL must also be separated from each other without contact, and the pixel electrode 130 cannot directly contact the scan line SL. , the data line DL and the channel layer CH. Therefore, the insulating layer 120 is disposed in the pixel structure 100 to realize separation between these components. In this embodiment, the insulating layer 120 is not limited to a single-layer structure, but may be formed by stacking multiple insulating material layers. For example, the insulating layer 120 may include a first insulating material layer and a second insulating material layer not shown, wherein the first insulating material layer is disposed between the gate GE and the channel layer CH and the scan line SL and the data line DL between, and the second insulating material layer is disposed between the pixel electrode 130 and the data line DL and between the pixel electrode 130 and the channel layer CH, but not limited thereto. In another embodiment, the insulating layer 120 can also be a single-layer structure, and other insulating layers can be configured in the pixel structure 100 . In addition, the insulating layer 120 is not limited to be composed of a single material, and the insulating material constituting the insulating layer 120 can be selected from silicon oxide, silicon nitride, silicon oxynitride, insulating photoresist material, organic insulating material or other insulating materials. One or a combination of materials.

Before forming the pixel electrode 130, the insulating layer 120 may be patterned to define a first area A1 and a second area A2 surrounding the first area A1. In this embodiment, the boundary B between the first area A1 and the second area A2 forms a closed pattern. FIG. 1B shows the boundary B between the first area A1 and the second area A2 with a thick dashed line, wherein the first area A1 is inside the thick dashed line, and the second area A2 is outside the thick dashed line. The closed pattern is, for example, a square pattern as shown in FIG. 1B , that is, the boundary B between the first area A1 and the second area A2 is distributed along the outline of the square pattern.

There is a height difference between the first area A1 and the second area A2. Further, the first area A1 has a top surface T1 of the first area, and the second area A2 has a top surface T2 of the second area. The top surface T1 of the first region and the top surface T2 of the second region may be planes parallel to the surface S1, and the first distance D1 from the top surface T1 of the first region to the surface S1 is smaller than the second distance between the top surface T2 of the second region and the surface S1. distance D2. For example, the difference between the first distance D1 and the second distance D2 may be between 0.3 μm and 0.9 μm, and is preferably 0.5 μm.

In this embodiment, when the insulating layer 120 is composed of multiple insulating material layers of different materials, the material of the insulating layer 120 on the top surface T1 of the first region and the material of the insulating layer 120 on the top surface T2 of the second region may be the same. or different. In other words, the insulating layer 120 is composed of multiple insulating material layers of different materials, and the top insulating material layer is partially thinned in the first region A1 to form the top surface T1 of the first region, then the insulating layer 120 is formed in the first region A1. The material of the top surface T1 of the region may be the same as the material of the insulating layer 120 on the top surface T2 of the second region. In addition, the insulating layer 120 is composed of multiple insulating material layers of different materials, and the top insulating material layer is completely removed in the first region A1 so that the surface of the second top layer constitutes the top surface T1 of the first region, then the insulating The material of the layer 120 on the top surface T1 of the first region may be different from the material of the insulating layer 120 on the top surface T2 of the second region.

The pixel electrode 130 is formed behind the insulating layer 120, and the pixel electrode 130 and the drain DE are electrically connected to each other. As shown in FIG. 1C and FIG. 1D , at least part of the area of the pixel electrode 130 extends continuously from the top surface T1 of the first region to the top surface T2 of the second region. Specifically, the relatively recessed first area A1 forms a recessed accommodating space U, the pixel electrode 130 is disposed in this accommodating space U, and the edge of the pixel electrode 130 extends outward from the relatively recessed accommodating space U to The relatively raised top surface T2 of the second zone. Since the top surface T2 of the second area is higher than the top surface T1 of the first area, the pixel electrode 130 located in the second area A2 is higher than the pixel electrode 130 located in the first area A1. With the design of elevating the edge of the pixel electrode 130, when the pixel structure 100 of this embodiment is applied to a liquid crystal display, the direction of the electric force line and the area density of the electric force line during driving can be changed, so that the liquid crystal molecules can be controlled to fall in a predetermined direction. Taking the negative liquid crystal as an example, under the action of the electric field, the short axes of the negative liquid crystal molecules will be aligned along the direction of the electric field. The design of elevating the edge of the pixel electrode 130 can make the negative-type liquid crystal molecules fall stably outward during driving, thereby improving the efficiency of the liquid crystal, and can strengthen the limitation of the disclination node (disclination node) on the edge of the pixel structure 100 (such as the junction B corner) capabilities. In this way, it will help to reduce the probability of undesired dislocation lines or dislocation points being generated in the central area of the pixel structure 100 (eg, the first region A1 ). Therefore, the light transmittance of the pixel structure 100 can be effectively improved, and the display panel using the pixel structure 100 can have ideal light transmittance and display quality.

In this embodiment, the boundary B between the top surface T1 of the first region and the top surface T2 of the second region is formed by a steep surface, but it is not limited thereto. FIG. 1E is another embodiment of the area C in FIG. 1C . As shown in Figure 1E, depending on different process methods or process parameters, there may be a junction area A3 between the first area A1 and the second area A2, wherein the junction area A3 has a junction area connected to the top surface T1 of the first area and the second area An inclined surface T3 between the top surfaces T2, and the included angle θ between the inclined surface T3 and the surface S1 of the substrate 110 is, for example, greater than 80 degrees, so as to better stabilize the liquid crystal inversion. In this embodiment, the top surface T1 of the first region and the top surface T2 of the second region can be considered to be substantially parallel, and the inclined surface T3 is connected between the two top surfaces.

Referring to FIG. 1B again, the pixel electrode 130 of this embodiment has a trunk opening TO and a plurality of slit openings SO connected to the trunk opening TO. The trunk openings TO are distributed along a cross-shaped track to define a plurality of alignment areas AA (for example, four alignment areas AA). In addition, the intersection X of the cross-shaped tracks is located in the first area A1, such as, but not limited to, the center of the pixel electrode 130 . In this embodiment, aligning with the trunk opening TO helps to reduce the line width of the misalignment line corresponding to the middle of the pixel electrode 130 , so that light transmittance can be taken into account while taking advantage of a wide viewing angle. In this embodiment, the width IT of the trunk opening TO is, for example, between 2 micrometers and 8 micrometers, and is preferably 4 micrometers.

The slit openings SO in the same alignment area AA are parallel to each other, and a stripe portion 132 of the pixel electrode 130 is defined between two adjacent slit openings SO. In this embodiment, the width W of the stripes 132 in the same alignment area AA in the alignment direction is constant, that is, the stripes 132 are designed with equal widths, but the invention is not limited thereto. In another embodiment, the width W of the striped portion 132 may also gradually decrease from outside to inside, that is, the width W of the striped portion 132 gradually decreases toward the intersection X. As shown in FIG. Under this framework, the width of the slit opening SO gradually increases from the outside (farther from the intersection X) to the inside (closer to the intersection X). This improvement is applicable to the following embodiments, and will not be repeated here.

The pixel electrode 130 may further include a peripheral connection part 134 . The peripheral connection portion 134 is partially located in the first area A1 and partially located in the second area A2. In this embodiment, the width W1 of the peripheral connection portion 134 located in the first area A1 (that is, the horizontal distance between the edge of the peripheral connection portion 134 located in the first area A1 and the junction B) is, for example, greater than 0 μm and less than or equal to 4 μm . In addition, the width W2 of the peripheral connection portion 134 in the second area A2 (ie, the horizontal distance between the edge of the peripheral connection portion 134 in the second area A2 and the boundary B) is, for example, between 2 μm and 10 μm.

The stripe portion 132 extends outward from the trunk opening TO and is connected to the peripheral connection portion 134 . In this embodiment, the peripheral connection portion 134 has a ring pattern and the stripe portion 132 is located in an area surrounded by the ring pattern. In addition, the outer contour OC and the inner contour IC of the peripheral connecting portion 134 (the inner contour is formed by connecting lines between all the stripe portions 134 and the peripheral connecting portion 134 ) substantially conform to (conform to) the top surface T1 of the first region and the second region. The junction B of the top surface T2 of the second district. Therefore, the outer contour OC and the inner contour IC of the peripheral connection portion 134 in this embodiment are also square, for example, square, but not limited thereto. In another embodiment, the pixel electrode 130 may also be rectangular, and its aspect ratio may be between 1 and 1.5. At this time, the outer contour OC and the inner contour IC of the peripheral connection portion 134 are both rectangular.

FIG. 2A is a partially enlarged schematic view of another embodiment of the pixel structure in FIG. 1A . FIG. 2B and FIG. 2C are schematic cross-sectional views along line III-III and IV-IV in FIG. 2A , respectively. Please refer to FIG. 2A to FIG. 2C , the pixel structure 100A is substantially the same as the pixel structure 100 , and the same elements are denoted by the same reference numerals, and details are not repeated here. The main difference between the pixel structure 100A and the pixel structure 100 is that the area of the first area A1' of the pixel structure 100A has a central part A11' and a plurality of protruding parts A12' extending outward from the central part A11', and the convex When the extension track of the out portion A12 ′ extends toward the center of the first area A1 ′, the central portion A11 ′ is divided into the above-mentioned plurality of alignment areas AA. Specifically, the protrusions A12', for example, respectively correspond to the ends of the trunk opening TO and extend out along the cross-shaped track of the trunk opening TO. The arrangement of the protrusion A12' helps to make the liquid crystal reversing more stable, and can further strengthen the ability to fix the dislocation point at the overlap of the protrusion A12' and the peripheral connection part 134, so that the corresponding trunk opening TO The misalignment lines are relatively thin and collimated, which helps to further improve the light transmittance. In this embodiment, the width W3 of the protrusion A12' in the direction perpendicular to its extension is greater than 3 microns, for example.

3 to 10 below illustrate other implementable types of pixel structure, but the present invention is not limited to the listed embodiments, anyone with ordinary knowledge in the technical field can combine and change the techniques of different embodiments , and all of them fall into the inventions to be protected in this case. 3 to 10 are partially enlarged schematic diagrams of other embodiments of the pixel structure in FIG. 1A . Please refer to FIG. 3 first, the pixel structure 100B is substantially the same as the pixel structure 100A, and the same components are denoted by the same reference numerals, which will not be repeated here. The main difference between the pixel structure 100B and the pixel structure 100A is that the pixel electrode 130A of the pixel structure 100B further includes a corner pattern portion 136 . The corner pattern portion 136 is disposed at a corner of the square formed by the peripheral connection portion 134 . The disposition of the corner pattern portion 136 helps to further strengthen the ability to fix the dislocation point on the edge of the pixel structure 100B (the position corresponding to the corner pattern portion 136 ), so as to make the liquid crystal reversing more stable. In this embodiment, the protruding width W4 of the corner pattern portion 136 (ie, the shortest distance from the edge of the corner pattern portion 136 to the edge of the peripheral connection portion 134 ) is, for example, between 1 μm and 4 μm.

Please refer to FIG. 4 , the pixel structure 100C is substantially the same as the pixel structure 100 , and the same elements are denoted by the same reference numerals, which will not be repeated here. The main difference between the pixel structure 100C and the pixel structure 100 is that the boundary B between the top surface T1 of the first region and the top surface T2 of the second region of the pixel structure 100C is distributed along the contour of a geometric pattern. The width of the geometric pattern in the first direction D1 gradually decreases from the center to the outside, and the width in the second direction D2 perpendicular to the first direction D1 gradually decreases from the center to the outside. Moreover, two adjacent edges E of the geometric pattern respectively form a turning point TP in the four alignment areas AA divided by the trunk opening TO. Each edge E corresponds to the cross-shaped track of the trunk opening TO with one long and one short component PL, PW, and the ratio PL/PW of the component PL to the component PW is greater than or equal to 0.0185.

In this embodiment, both the outer contour OC and the inner contour IC of the peripheral connection portion 134 maintain the aforementioned square design, and at least part of the stripe portion 132 overlaps the boundary B between the top surface T1 of the first region and the top surface T2 of the second region, Moreover, part of the stripe portion 132 extends from the top surface T1 of the first region to the top surface T2 of the second region, but the invention is not limited thereto. As shown in FIG. 5 , the inner contour IC of the peripheral connection portion 134A of the pixel electrode 130B may also follow the boundary B between the top surface T1 of the first region and the top surface T2 of the second region, and have substantially the same contour as the above geometric pattern. Alternatively, as shown in FIG. 6 , the outer contour OC and inner contour IC of the peripheral connection portion 134B of the pixel electrode 130C may jointly conform to the boundary B between the top surface T1 of the first region and the top surface T2 of the second region to have the same geometric pattern as above. Essentially the same profile. Under the framework of FIG. 5 and FIG. 6, all the stripe portions 132 are located in the area surrounded by the circular pattern of the peripheral connection portions 134A, 134B, that is, all the stripe portions 132 are arranged on the top surface T1 of the first region . In addition, the peripheral connection portions 134A, 134B overlap and cross the boundary B between the top surface T1 of the first region and the top surface T2 of the second region.

In the pixel structures 100C, 110D, and 100E in FIGS. 4 to 6 , at least one of the outer contour OC of the peripheral connection portion 134B, the inner contour IC of the peripheral connection portions 134A, 134B, and the boundary B adopts a gradient design, It helps to further stabilize the inversion of the liquid crystal, so as to achieve the above-mentioned effect of improving the efficiency of the liquid crystal and the light transmittance.

Please refer to FIG. 7 , the pixel structure 100F is substantially the same as the pixel structure 100 , and the same elements are denoted by the same reference numerals, so details are not repeated here. The main difference between the pixel structure 100F and the pixel structure 100 is that the peripheral connection portion 134C of the pixel structure 100F is divided into multiple sections by a plurality of gaps G, and each gap G is located at the end of the trunk opening TO. The gap G structurally separates the peripheral connection portions 134C from each other, and the gap G can be considered as an extension of the trunk opening TO. That is, the gap G and the trunk opening TO are both hollow structures. In addition, one of the stripes 132 of each alignment area AA extends toward the trunk opening TO to connect one of the stripes 132 of the adjacent alignment area AA. Specifically, the extended portion of the stripe portion 132 extending toward the trunk opening TO constitutes a plurality of trunk connection portions 138 . The trunk connection part 138 is located in the trunk opening TO to connect one of the stripe parts 132 of each alignment area AA to one of the stripe parts 132 of the adjacent alignment area AA. In addition, the trunk connecting portion 138 does not overlap the intersection X of the cross trace, that is, the trunk connecting portion 138 exposes the intersection X. In this embodiment, the backbone connecting portion 138 is separated from each other, and the stripe portion 132 and the backbone connecting portion 138 are connected together to form a V shape, but this embodiment is not intended to limit the shape of the backbone connecting portion 138 and its connection to the stripe portion 132 The way. As shown in the pixel electrode 130E in FIG. 8 , the stripe portion 132 and the connected trunk connection portion 138A may also form a W shape. Alternatively, as shown in the pixel electrode 130F in FIG. 9 , the trunk connecting portions 138B located in the trunk opening TO may be connected together to form a square structure surrounding the intersection X. Referring to FIG. However, the present invention is not limited to the above.

In the pixel structures 100F, 100G, and 100H, the setting of the gap G helps to make the liquid crystal inversion more stable, and can further strengthen the ability to fix the dislocation point at the position corresponding to the gap G, so as to achieve the aforementioned improvement of liquid crystal efficiency and optical efficiency. The effect of penetration. In these embodiments, the width W5 of the gap G (ie, the distance between two adjacent segments of the peripheral connection portion 134C) is, for example, greater than 1 micron and less than or equal to 8 microns. In addition, the width W1 is, for example, greater than 2 micrometers, and the width W2 is, for example, between 2 micrometers and 8 micrometers. In addition, as shown in FIG. 10 , the pixel electrode 130G of the pixel structure 100I further includes the corner pattern portion 136 in FIG. 3 under the framework of FIG. location) capability. The pixel structures 100G and 100H in FIG. 8 and FIG. 9 can also be improved in the same way, and will not be repeated here. In addition, the ranges of the widths W1 , W2 , W4 , and W5 in FIG. 10 can be referred to above, and will not be repeated here.

FIG. 11 is a schematic cross-sectional view of a display panel according to an embodiment of the present invention. Please refer to FIG. 11 , the display panel 10 includes a plurality of pixel structures 12 (only one is schematically shown in FIG. 11 ) and a liquid crystal layer 14, wherein each pixel structure 12 can adopt the above-mentioned pixel structures 100, 100A, 100B, 100C, 100D, One of 100E, 100F, 100G, 100H, 100I.

The display panel 10 may further include a facing substrate 16 . The opposite substrate 16 is disposed opposite to the pixel structure 12 , and the liquid crystal layer 14 is located between the opposite substrate 16 and the pixel structure 12 . In addition, the opposite substrate 16 may include a transparent substrate SUB and a common electrode layer CE disposed thereon. The common electrode layer CE and the pixel electrode 130 are respectively located on opposite sides of the liquid crystal layer 14 , and the liquid crystal molecules LC of the liquid crystal layer 14 change their tilting direction according to the direction of the electric field between the pixel electrode 130 and the common electrode layer CE. Taking the liquid crystal molecules LC as negative type liquid crystal molecules as an example, the short axis of the negative type liquid crystal molecules will be aligned along the direction of the electric field. Driven by the pixel structure 12 , the direction of the electric field is directed from the pixel electrode 130 to the common electrode layer CE (approximately vertical electric field). Through the above-mentioned design of elevating the edge of the pixel electrode 130 , the liquid crystal molecules LC can all fall to the second area A2 , so that the display panel 10 can have good light transmittance and display quality.

To sum up, the pixel structure of the embodiment of the present invention is designed to elevate the edge of the pixel electrode, so that the liquid crystal molecules can be stably tilted outward during driving, which helps to improve the light transmittance, and makes the application of the above pixel The display panel with the structure can have ideal light transmittance.

Although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the appended patent application.

Claims (18)

1. A kind of 1. dot structure, it is characterised in that including：

   One substrate, has a surface；

   One insulating layer, be configured on the substrate and define one first area and one second area and secondth area be centered around this first Area periphery, wherein firstth area are with one first area's top surface and secondth area is with one second area's top surface, and the firstth area top surface One first distance to the surface is less than the secondth area top surface to a second distance on the surface；And

   One pixel electrode, is configured on the substrate, and at least part area of the pixel electrode by the firstth area top surface continuously The secondth area top surface is extended to, the wherein pixel electrode has a trunk opening and is communicated in multiple slits of the trunk opening Opening, the trunk opening are distributed along cross track to mark off multiple orientation areas, and the slit in same orientation area is opened A mouth striped portion parallel to each other and that the pixel electrode is defined between two neighboring slit opening, and the cross track Infall be located in firstth area；

   Contoured profile of the boundary of the firstth area top surface and the secondth area top surface along a geometrical pattern.
2. 2. dot structure according to claim 1, it is characterised in that the wherein court of stripe portion positioned at the respectively orientation area Extended out to the trunk opening and connect a wherein stripe portion in adjacent orientation area.
3. 3. dot structure according to claim 2, it is characterised in that the pixel electrode further includes multiple Truck Connection portions, In the trunk opening, the respectively orientation area is extended out towards the trunk opening this wherein a stripe portion is connected to A wherein stripe portion in the adjacent orientation area.
4. 4. dot structure according to claim 3, it is characterised in that the not overlapping cross track in the Truck Connection portion Infall.
5. 5. dot structure according to claim 2, it is characterised in that the striped portion is overlapped in the firstth area top surface with being somebody's turn to do The boundary of second area's top surface.
6. 6. dot structure according to claim 1, it is characterised in that the pixel electrode further includes a peripheral join, portion Divide and be located in firstth area and be partly located in secondth area, and the striped portion is extended by the trunk outward opening and is connected to The peripheral join.
7. 7. dot structure according to claim 6, it is characterised in that peripheral join bar with circular pattern Line portion is located in the circular area of the circular pattern.
8. 8. dot structure according to claim 6, it is characterised in that the peripheral join is separated into more by multiple gaps Section and respectively the gap is located at the end of the trunk opening.
9. 9. dot structure according to claim 6, it is characterised in that the outer contour of the peripheral join is square.
10. 10. dot structure according to claim 9, it is characterised in that the pixel electrode further includes corner drafting department and sets In the square corner that the peripheral join is formed.
11. 11. dot structure according to claim 6, it is characterised in that the outer contour of the peripheral join is substantially complied with The boundary of the firstth area top surface and the secondth area top surface.
12. 12. dot structure according to claim 1, it is characterised in that the geometrical pattern is square pattern.
13. 13. dot structure according to claim 1, it is characterised in that width of the geometrical pattern on a first direction It is by being gradually reduced outside mediad, and the width in a second direction is and the first direction by being gradually reduced outside mediad It is vertical with the second direction.
14. 14. dot structure according to claim 1, it is characterised in that the area in firstth area have a central part and The multiple protrusions to be stretched out away by the central part, and the center in extension track towards firstth area of the protrusion is prolonged The central part is divided into multiple orientation areas when stretching.
15. 15. dot structure according to claim 1, it is characterised in that thickness of the insulating layer in firstth area is less than The thickness in secondth area.
16. 16. dot structure according to claim 1, it is characterised in that the difference of first distance and the second distance between Between 0.3 micron to 0.9 micron.
17. 17. dot structure according to claim 1, it is characterised in that there are a friendship between firstth area and secondth area Battery limit (BL), the junctional area have the inclined plane being connected between the firstth area top surface and the secondth area top surface, and the inclined plane is with being somebody's turn to do The angle on the surface of substrate is more than 80 degree.
18. A kind of 18. display panel, it is characterised in that including：

    Multiple dot structures as any one of claim 1 to 17；And

    One liquid crystal layer, the liquid crystal molecule of the liquid crystal layer are driven by the dot structure, and under dot structure driving, it is described Liquid crystal molecule is all toppled over to secondth area.