CN211478805U - Display panel - Google Patents

Abstract

The application discloses a display panel, including array substrate and various membrane base plate that relative setting and press from both sides the liquid crystal layer between array substrate and various membrane base plate, various membrane base plate includes first base plate and piles up first base plate orientation color resistance layer on the surface of liquid crystal layer, visual angle control electrode and protective layer, array substrate include the second base plate and pile up the second base plate orientation active array, common electrode, pixel electrode and passivation layer on the surface of liquid crystal layer, wherein, the protective layer with the passivation layer includes a plurality of first archs and the second arch that have the slope lateral wall respectively, and is a plurality of first arch with the second arch all faces the liquid crystal layer sets up. The utility model provides a display panel is through all setting up a plurality of archs on array substrate and various membrane base plate are relative on the surface, when adding power, changes the deflection of liquid crystal molecule, the light leak effect when having increased the strabismus to the contrast ratio is strengthened, the effect of multi-angle peep-proof on a large scale is realized.

Description

Display panel

Technical Field

The utility model relates to a liquid crystal display field, in particular to display panel that can multi-angle peep-proof.

Background

Liquid Crystal Display devices (LCD) have been widely used because of their advantages such as thin body, power saving, and no radiation. Currently, several commonly used liquid crystal display modes, such as FFS (Fringe field Switching) mode, IPS (In-Plane Switching) mode, etc., are widely applied to related products due to their excellent wide viewing angle characteristics.

However, with the development of society, people have an increasing interest in personal privacy and information security, and the demand for the liquid crystal display screen to have a peep-proof function is also increasing. In the related art, peeping prevention is mainly realized by adding a layer of peeping prevention film of a 3M shutter on the surface of a display device, or switching of wide and narrow viewing angles is realized by adopting a display screen with a controllable viewing angle, so that the peeping prevention of the display device is realized, but the peeping prevention modes provided by the prior art can only realize the peeping prevention in the viewing angles in the left direction and the right direction.

When a user uses a cash dispenser to perform bank transactions, economic transactions and other property-related services in a commercial place, the security protection is poor because only two directions of visual angles are used for preventing peeping, passwords and other transaction secrets are easy to leak, and the security protection is not high.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present invention is to provide a display panel, which sets up a plurality of protruding structures on both sides of the liquid crystal layer, so that the deflection of the liquid crystal molecules is affected, the generation of the deflection angle makes the oblique light leakage enhanced, thereby enhancing the central contrast, the formal image quality is effectively improved, and the all-round peep-proof effect is achieved.

The utility model provides a display panel, which comprises an array substrate and a color film substrate which are oppositely arranged and a liquid crystal layer which is clamped between the array substrate and the color film substrate,

the color film substrate comprises a first substrate, a color resistance layer, a visual angle control electrode and a protective layer, wherein the color resistance layer, the visual angle control electrode and the protective layer are stacked on the surface, facing the liquid crystal layer, of the first substrate;

the array substrate comprises a second substrate and an active array, a common electrode, a pixel electrode and a passivation layer which are stacked on the surface of the second substrate facing the liquid crystal layer;

wherein the protective layer and the passivation layer respectively include a plurality of first protrusions and second protrusions having inclined sidewalls, the plurality of first protrusions and second protrusions being disposed toward the liquid crystal layer.

Preferably, the plurality of first protrusions of the protection layer and the plurality of second protrusions of the passivation layer are disposed to be offset from each other by a distance in a direction perpendicular to the display panel.

Preferably, the viewing angle control electrode is located on a surface of the first protrusion facing the liquid crystal layer, and/or the pixel electrode is located on a surface of the second protrusion facing the liquid crystal layer;

or, the visual angle control electrode is positioned on the surface of the first bulge back to the liquid crystal layer, and/or the pixel electrode is positioned on the surface of the bulge back to the liquid crystal layer.

Preferably, the viewing angle control electrode and/or the pixel electrode is a continuous whole electrode layer.

Preferably, the viewing angle controlling electrode and/or the pixel electrode includes a plurality of electrode bars insulated from each other.

Preferably, the viewing angle control electrode covers at least a portion of each of the first protrusions, and/or the pixel electrode covers at least a portion of each of the second protrusions.

Preferably, the viewing angle controlling electrode is distributed around and does not cover the plurality of first protrusions, and/or the pixel electrode is distributed around and does not cover the plurality of second protrusions.

Preferably, the plurality of first protrusions and the second protrusions include a circular truncated cone, a prism, a pyramid, and a triangle.

Preferably, the display panel further includes:

the first polaroid is positioned on the surface of the first substrate, which is opposite to the liquid crystal layer;

and the second polaroid is positioned on the surface of the second substrate, which is opposite to the liquid crystal layer, and the first polaroid and the second polaroid are both circular polaroids.

Preferably, each of the first protrusions and the second protrusions has a height less than half of a thickness of the liquid crystal layer.

The utility model provides a display panel, include two-layer relative protective layer and passivation layer that set up respectively in the liquid crystal layer both sides, every layer is all including a plurality of archs that have the slope lateral wall, and two-layer arch distributes respectively on array substrate and various membrane base plate, as array substrate and the partly of various membrane base plate, a deflection angle for changing the liquid crystal molecule, increase the oblique sight light leak effect, the narrow visual angle effect of reinforcing, and because the bellied setting of many places, make the peep-proof effect homogeneous phase of each angle the same, thereby reach more meticulous diversified peep-proof.

In another embodiment, a polarizer and a quarter-wave plate are respectively added on the array substrate and the color film substrate, the circularly polarized polarizer converges light, and the quarter-wave plate enables the light to be emitted as circularly polarized light, so that the light converging effect of the circularly polarized polarizer is enhanced, the central contrast is improved, the front view image quality is better, the narrow viewing angle effect is enhanced, and the arrangement of the circularly polarized polarizer enables the light at each angle to be uniform, thereby realizing multi-angle peep prevention.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.

Fig. 1 shows a schematic structural diagram of a display panel according to an embodiment of the present invention.

Fig. 2 shows a schematic structural diagram of a display panel according to another embodiment of the present invention.

Fig. 3a to 3c are schematic structural diagrams of a color film substrate of a display panel according to another embodiment of the present invention.

Fig. 4a and 4b show schematic deflection diagrams of liquid crystal molecules of a display panel according to an embodiment of the present invention in a dark state and a bright state, respectively.

Fig. 5 is a schematic diagram illustrating the peep-proof effect of each angle of the display panel according to the embodiment of the present invention.

Detailed Description

Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.

It will be understood that when a layer or region is referred to as being "on" or "over" another layer or region in describing the structure of the device, it can be directly on the other layer or region or intervening layers or regions may also be present. And if the device is turned over, that layer, region, or regions would be "under" or "beneath" another layer, region, or regions. If for the purpose of describing the situation directly on another layer, another area, the expression "a is directly above B" or "a is above and adjacent to B" will be used herein.

Fig. 1 shows a schematic structural diagram of a display panel according to a first embodiment of the present invention.

As shown in the figure, the display panel 100 of the present embodiment includes: the liquid crystal display panel comprises a color film substrate 110, an array substrate 130 arranged opposite to the color film substrate 110, and a liquid crystal layer 120 located between the color film substrate 110 and the array substrate 130. The color filter substrate 110 is a color filter substrate, on which structures such as a black matrix and a color filter are generally disposed, and a protective layer is disposed on a first surface of the color filter substrate 110 facing the liquid crystal layer 120, and is preferably an oc (over coating) layer, such as the protective layer 115 shown in fig. 1. The array substrate 130 is generally arranged with active devices such as data lines, scan lines, and pixel units, and a protection layer or passivation layer, such as the passivation layer 135 shown in fig. 1, is also disposed above the active devices, i.e., on a first surface of the array substrate 130 facing the liquid crystal layer 120. The layer structures of the different liquid crystal display devices are not all the same, so that the following description will only show some possible embodiments of the liquid crystal display device of the present invention, which cannot be used to define the present invention.

Fig. 1 is a schematic diagram of a display panel 100 according to an embodiment of the present invention, and as shown in the figure, a color filter substrate 110 includes a first substrate 111, and a black matrix 112, a color resist layer 113, a protective layer 115, and a viewing angle control electrode 116 stacked on a surface of the first substrate 111 facing a liquid crystal layer 120. The color resist layer 113 is, for example, R, G, B color resist, and the color resist layer 113 and the black matrix 112 are arranged to be offset from each other. The protective layer 115 covers the surfaces of the black matrix 112 and the color resist layer 113, and plays a role of protection and support.

In this embodiment, the protection layer 115 covers not only the surfaces of the black matrix 112 and the color resist layer 113, but also the protection layer 115 includes a plurality of first protrusions 118 with inclined sidewalls, and the plurality of first protrusions 118 face the liquid crystal layer 120, that is, the first protrusions 118 are a part of the protection layer 115, and may be directly manufactured in a convex shape during manufacturing. The viewing angle controlling electrode 116 is made of, for example, a transparent conductive material ITO (indium tin oxide), and the viewing angle controlling electrode 116 is located on the surface of the protective layer 115 having the first protrusions 118, i.e., the viewing angle controlling electrode 116 covers the plurality of first protrusions 118 and the other portions of the protective layer 115, matching the shape of the protective layer 115.

The array substrate 130 includes, for example, a second substrate 131, and an active element array 132, a passivation layer 133, a common electrode 134, a passivation layer 135, and a pixel electrode 136 sequentially covering a surface of the second substrate 131 on a side facing the liquid crystal layer 120. The structure of the active element array 132 is well known in the art, and for example, the active element array 132 includes a plurality of scan lines, a plurality of data lines, and Thin Film Transistors (TFTs), where the plurality of scan lines and the plurality of data lines are insulated from each other and crossed to define a plurality of sub-pixels (sub-pixels) arranged in an array, and a TFT is disposed in each sub-pixel. Each TFT comprises a grid electrode, an active layer, a source electrode and a drain electrode, wherein the grid electrode is electrically connected with the corresponding scanning line, and the source electrode is electrically connected with the corresponding data line. The common electrode 134 and the pixel electrode 136 are located at different layers, and a passivation layer 135 is sandwiched between the common electrode 134 and the pixel electrode 136, so that the common electrode 134 and the pixel electrode 136 are insulated from each other. The passivation layer 135 is formed of, for example, an organic insulating material OC, which serves as an insulator on the one hand and planarizes a surface of the array substrate 130 facing the liquid crystal layer 120 on the other hand.

The passivation layer 135 of the array substrate 130 covers not only the surface of the common electrode 134, but also the passivation layer 135 includes a plurality of second protrusions 137 having inclined sidewalls, and the plurality of second protrusions 137 toward the liquid crystal layer 120 together with the first protrusions 118 affect the deflection of the liquid crystal molecules 121, i.e., the second protrusions 137 and the passivation layer 135 are an integral structure, and the second protrusions 137 are a part of the passivation layer 135. The surface of the second protrusion 137 is covered with a layer of pixel electrode 136, and the pixel electrode 136 is, for example, ITO, and matches the shape of the passivation layer 135.

The liquid crystal layer 120 includes a plurality of liquid crystal molecules 121, and the liquid crystal molecules 121 can be deflected under the action of an electric field to transmit light. In general, a first alignment layer and a second alignment layer (not shown) may be disposed on the upper and lower sides of the liquid crystal molecules 121, respectively, and the two alignment layers are disposed on the array substrate 130 and the color filter substrate 110 and close to the liquid crystal layer 120. The first alignment layer and the second alignment layer serve to initially align the liquid crystal layer 120, together defining an initial alignment direction of the liquid crystal molecules 121. In the present embodiment, the liquid crystal molecules 121 are, for example, negative liquid crystal, and the initial alignment of the liquid crystal molecules 121 is vertical, i.e. the long axes of the liquid crystal molecules 121 are perpendicular to the two substrates.

The display panel of the present embodiment adopts a Field Fringe Field Switching (FFS) architecture, and the pixel electrode 136 and the common electrode 134 are both formed on the same substrate (array substrate); when a voltage is applied only between the pixel electrode 136 and the common electrode 134 and the viewing angle control electrode 116 is not applied, a horizontal electric field is formed between the pixel electrode 136 and the common electrode 134, and the liquid crystal molecules 121 rotate within the plane electric field, which is a wide viewing angle mode, that is, a wide viewing angle is obtained.

When a voltage is applied between the viewing angle control electrode 116 and the pixel electrode 136, a vertical electric field is formed due to a voltage difference between the two electrodes, the existence of the vertical electric field weakens a horizontal electric field, so that the liquid crystal molecules 121 deflect under the action of the electric field, the long axis of the negative liquid crystal is perpendicular to the direction of the electric field, so that an inclination angle is formed between the liquid crystal molecules 121 and the substrate, the liquid crystal molecules deflect under the action of the inclination electric field to form a light leakage phenomenon, the contrast is reduced, the viewing angle is reduced, and the narrow viewing angle display effect is achieved; due to the existence of the plurality of first protrusions 118 and the plurality of second protrusions 137, the liquid crystal molecules 121 are not all deflected in the direction perpendicular to the electric field, but some liquid crystal molecules 121 are arranged and deflected along the side wall directions of the first protrusions 118 and the second protrusions 137, so that different liquid crystal molecules 121 have different deflection angles and have larger inclination angles with the substrate, thereby increasing light leakage in oblique view, causing the contrast to be reduced, reducing the viewing angle, having poor image quality effect in side view, having better image quality effect in center view, and realizing the peep-proof effect with a narrow viewing angle.

In the display panel of the embodiment, the first protrusions 118 of the protection layer 115 and the second protrusions 137 of the passivation layer 135 are arranged at a certain distance in a direction perpendicular to the liquid crystal panel, so that the protrusion density is large, and in the perpendicular direction, the deflection angle of the liquid crystal molecules 121 in each column is affected by the protrusions. In other embodiments, the plurality of first protrusions 118 and the plurality of second protrusions 137 are disposed in a vertical direction, e.g., aligned.

The first protrusions 118 and the second protrusions 137 each have a height less than half of the thickness of the liquid crystal layer 120, for example, the height of the first protrusions and the second protrusions is 1.2 to 1.5 μm. When the thickness of the liquid crystal layer 120 is 4 μm, the height of the first protrusion and the second protrusion may be set to 1.2 μm. Limiting the height of the protrusion to prevent the protrusion from directly contacting the array substrate 130 or the color film substrate 110, and damaging the panel when external force is applied; and prevent that the arch is too high, influence the distribution and the printing opacity effect of liquid crystal molecule.

The first protrusions 118 and the second protrusions 137 are, for example, cylindrical or prismatic, tapered from top to bottom, and have inclined sidewalls, so that the liquid crystal molecules 121 at different positions are deflected at different angles. The first protrusion 118 and the second protrusion 137 are, for example, circular truncated cones, trapezoidal truncated cones, triangular bodies, tapered-body-shaped and other shapes having inclined side walls. The inclined side walls of the first protrusion 118 and the second protrusion 137 are inclined at an angle in the range of, for example, 45 ° to 60 °. The utility model provides a display panel, include the two-layer relative protective layer that sets up respectively in the liquid crystal layer both sides, every layer of protective layer is all including a plurality of archs that have the slope lateral wall, and two-layer arch distributes respectively on array substrate and various membrane base plate, as array substrate and the partly of various membrane base plate, a deflection angle for changing the liquid crystal molecule, increase oblique sight light leakage effect, the narrow visual angle effect of reinforcing, and because the bellied setting of many places, make the peep-proof effect homogeneous phase of each angle the same, thereby reach more meticulous diversified peep-proof.

Further, the display panel 100 of the embodiment further includes a first polarizer 117 and a second polarizer 139. The first polarizer 117 is located on the surface of the first substrate 111 of the color filter substrate 110 facing away from the liquid crystal layer 120, and the second polarizer 139 is located on the surface of the second substrate 131 of the array substrate 130 facing away from the liquid crystal layer 120, that is, the two polarizers are distributed on the outer sides of the two substrates. The polarizing axes of the first and second polarizing plates 117 and 139 are, for example, arranged perpendicular to each other, and a good light-transmitting effect is achieved.

The first polarizer 117 and the second polarizer 139 are, for example, circular polarizers, which have better light-gathering effect and can further improve the contrast ratio of the oblique-view and front-view panels. In addition, the surfaces of the first polarizer 117 and the second polarizer 139 are covered with a quarter-wave plate (not shown), and the slow axes of the two quarter-wave plates covered on the first polarizer 117 and the second polarizer 139 are perpendicular to each other. The quarter-wave plate enables light rays to be emitted into elliptically polarized light, and when the incident light and the quarter-wave plate form an angle of 45 degrees, the emergent light is circularly polarized light which is just used for a circular polarizer, so that the light condensation effect of the polarizer is further improved. And the setting of circular polaroid for no matter which angle on the plane is watched at this display panel, its viewing effect is the same, thereby realizes omnidirectional peep-proof visual angle.

In the present embodiment, the thickness of the first substrate 111 is, for example, 0.1 μm, the thickness of the first protrusion 118 of the first protection layer 115 is, for example, 1.2 μm, the inclination angle is 60 °, the thickness of the color resist layer 113 is, for example, 0.135 μm, the thickness of the common electrode 134 is, for example, 0.04 μm, and the thickness and the inclination angle of the second protrusion 137 of the passivation layer 135 are the same as those of the first protrusion 118.

The embodiment is additionally provided with the polaroid and the quarter-wave plate on the array substrate and the color film substrate respectively, the circularly polarized polaroid enables light to be converged, the quarter-wave plate enables light to be emitted to be circularly polarized light, the condensation effect of the circularly polarized polaroid is enhanced, the central contrast is improved, the front view image quality is better, the narrow visual angle effect is enhanced, the circularly polarized polaroid is arranged to enable light of all angles to be uniform, and multi-angle peeping prevention is achieved.

In the present embodiment, the viewing angle control electrode 116 and the pixel electrode 136 are both respectively located on the surfaces of the first protrusion 118 and the second protrusion 137 facing the liquid crystal layer 120, and it is found in the experimental process that multi-angle peep prevention can still be achieved by interchanging the positions of the protective layer 115 and the viewing angle control electrode 116, or interchanging the positions of the pixel electrode 136 and the passivation layer 135, so that only the pixel electrode 136 can be located on the surface of the second protrusion 137 facing the liquid crystal layer 120 and the viewing angle control electrode 116 can be located between the protective layer 115 and the first protrusion 118, or only the viewing angle control electrode 116 can be located on the surface of the first protrusion 118 facing the liquid crystal layer 120 and the pixel electrode 136 can be located between the passivation layer 135 and the common electrode 134.

Fig. 2 shows a schematic structural diagram of a display panel according to another embodiment of the present invention. As shown in fig. 2, the display panel 200 of the present embodiment has substantially the same structure as the display panel of the first embodiment, and also includes an array substrate 230 and a color filter substrate 210 which are oppositely disposed, and a liquid crystal layer 220 located therebetween. The array substrate 230 includes a second polarizer 239, a second substrate 231, an active device array 232, a first passivation layer 233, a common electrode 234, a second passivation layer 238, a pixel electrode 236, and a third passivation layer 235, which are sequentially stacked, and a plurality of second protrusions 237 are formed on a surface of the third passivation layer 235. In the present embodiment, the pixel electrode 236 is disposed under the second protrusion 237, and the pixel electrode 236 is separated from the common electrode 234 by the second passivation layer 238.

The first polarizer 217, the first substrate 211, the black matrix 211, the color resist layer 213, the viewing angle control electrode 216, and the first protective layer 215 of the color filter substrate 210 are the same as those of the first embodiment, and are not described herein again. The difference between this embodiment and the above embodiment is that the positions of the first passivation layer 215 and the viewing angle control electrode 216 are interchanged, so in this embodiment, the second passivation layer 214 is further covered on the surface of the color resist layer 213, the viewing angle control electrode 216 is located between the first passivation layer 215 and the second passivation layer 214, and the viewing angle control electrode 216 is a flat whole layer. The first protection layer 215 still includes a plurality of first protrusions 218, and the first protrusions 218 and the second protrusions 237 are disposed to be offset from each other in a direction perpendicular to the display panel.

That is, in the present embodiment, at least one of the viewing angle control electrode 216 and the pixel electrode 236 is located on a surface of the projection facing away from the liquid crystal layer 120. The viewing angle control electrode 216 may be disposed only between the second protective layer 214 and the first protective layer 215, i.e., disposed over the first protrusion 218, without covering the first protrusion 218, and the pixel electrode 236 covers the surface of the second protrusion 237; it is also possible to dispose only the pixel electrode 236 under the second protrusions 237 so that it does not cover any of the second protrusions 237, and the viewing angle control electrode 216 covers the surface of the first protrusion 218; the viewing angle control electrode 216 may be disposed between the second protective layer 214 and the first protective layer 215, and the pixel electrode 236 may be disposed under the second protrusion 237, so that the first protrusion 218 and the second protrusion 237 on both sides of the liquid crystal layer 220 are exposed.

In the present embodiment, the protrusions are exposed, so that the electrode layer is covered by the protection layer or the passivation layer on which the protrusions are located, but a vertical electric field is applied between the viewing angle control electrode 216 and the pixel electrode 236, which still can achieve peep prevention at various angles, and the viewing angle control electrode 216 is located between the first protection layer 215 and the second protection layer 214, which can reduce the error rate of the manufacturing process. The array substrate and/or the color film substrate can be manufactured by adopting the stacking method of any one of the two embodiments.

Furthermore, the electrode layer of the present invention may be a continuous whole layer, or may be a plurality of electrode strips spaced apart from each other. For example, in fig. 1, the pixel electrode 136 on the array substrate 130 and the viewing angle control electrode 116 on the color filter substrate 110 are continuous and integral layers, and cover all the second protrusions 137 and all the first protrusions 118, respectively. In the present embodiment, the viewing angle control electrode 216 is still a continuous whole layer covered by the first passivation layer 215, and the pixel electrodes 236 are separated by a plurality of electrode stripes, which are separated by the third passivation layer 235 and insulated from each other. In other embodiments, the viewing angle control electrode 216 may be a plurality of electrode strips separately disposed.

Experiments on the display panels of the embodiment of fig. 1 and the embodiment of fig. 2 show that the center contrast of the display panel 100 of the first embodiment is 290, which is already close to 300, so the image quality of the main screen is effectively improved, and the oblique-view image quality is poor. The center contrast of the display panel 200 of the second embodiment is 319, and its front view image quality is better, so the utility model discloses the center contrast of the display panel of two embodiments is all very high, and the light leak of squinting is great, and narrow visual angle is respond well, the display panel's that is applicable to department such as bank ATM setting.

When the electrode layer is coated on the surface of the protrusion, there may be a plurality of discontinuous electrode stripes, as in several embodiments shown in fig. 3a-3 c.

Fig. 3a to 3c are schematic structural diagrams of a color film substrate of a display panel according to another embodiment of the present invention.

Here, the color filter substrate 310 is merely described as an example, and actually, the same electrode arrangement method may be adopted for the array substrate. As shown in fig. 3a, a viewing angle control electrode 3161 is covered on the surface of the protective layer 315, and the viewing angle control electrode 3161 is, for example, an ITO layer. The viewing angle control electrode 3161 is distributed around the first protrusions 318 without covering the first protrusions 318, and at this time, the viewing angle control electrode 3161 also includes a plurality of electrode bars spaced and insulated from each other, and the plurality of electrode bars cover the portion of the protection layer 315 where the first protrusions 318 are not disposed.

In fig. 3b, a viewing angle control electrode 3162 is covered on the surface of the first protrusion 318, and the viewing angle control electrode 3162 is, for example, an ITO layer. The viewing angle control electrodes 3162 are distributed on the surfaces of the plurality of first protrusions 318, but do not cover the portions of the protective layer 315 where the first protrusions 318 are not disposed. At this time, the viewing angle control electrode 3162 also includes a plurality of electrode bars spaced apart and insulated from each other, and the plurality of electrode bars cover only a portion of the protective layer 315 where the first protrusion 318 is disposed.

In fig. 3c, a viewing angle controlling electrode 3163 is covered on the surface of the first protrusion 318, and the viewing angle controlling electrode 3163 is, for example, an ITO layer. The viewing angle control electrodes 3163 are distributed on the surfaces of the plurality of first protrusions 318, and partially cover the surface of each first protrusion 318, and do not cover the portion of the protective layer 315 where the first protrusion 318 is not disposed. That is, the viewing angle control electrode 3163 covers at least a portion of each first protrusion 318, for example, on the left one of the first protrusions 318 in fig. 3c, the viewing angle control electrode 3163 covers only the inclined sidewall, while on the middle first protrusion 318, the viewing angle control electrode 3163 covers only the plane of the first protrusion 318, and on the rightmost first protrusion 318, the viewing angle control electrode 3163 covers only the plane and a portion of the inclined sidewall of the first protrusion 318. At this time, the viewing angle control electrode 3163 also includes a plurality of electrode bars spaced apart and insulated from each other, and the plurality of electrode bars cover only a portion of the protective layer 315 where the first protrusion 318 is disposed. In different embodiments, the viewing angle control electrode may cover the protrusions in different forms.

The manner of covering the protrusions on the array substrate by the pixel electrodes may be the same as that of the present embodiment, and will not be described herein again.

Fig. 4a and 4b show schematic deflection diagrams of liquid crystal molecules of a display panel according to an embodiment of the present invention in a dark state and a bright state, respectively.

With reference to fig. 1, the display panel according to the embodiment of the present invention is tested, and in a dark state, i.e. when the viewing angle control electrode 116 is not powered on, as shown in fig. 4a, the alignment of the liquid crystal molecules 121 is vertical. In a bright state, that is, when a voltage is applied between the pixel electrode 136 and the viewing angle control electrode 116 to form a vertical electric field, as shown in fig. 4b, the liquid crystal molecules 121 are deflected by the electric field, but due to the existence of the plurality of first protrusions 118 and the plurality of second protrusions 137, the liquid crystal molecules 121 are not all deflected in a direction perpendicular to the electric field, but are deflected more in an inclined direction of the protrusions, so that the deflection of the liquid crystal molecules 121 is disturbed by the arrangement of the plurality of first protrusions 118 and the plurality of second protrusions 137, and light leakage in an oblique view is increased, thereby achieving a good narrow viewing angle effect. This embodiment is merely an example, and therefore, is merely schematic and not intended to limit the present invention.

Fig. 5 is a schematic diagram illustrating the peep-proof effect of each angle of the display panel according to the embodiment of the present invention.

Fig. 5 is a comparative picture of pictures at different polar angles and azimuth angles obtained by testing according to an embodiment of the present invention. As shown in fig. 5, in the range of 45 ° -65 °, the display picture is not substantially seen in oblique view, the narrow viewing angle effect is good, and the picture definition is high in front view.

In addition, since the display effect of the display screen is the same when viewed at the same polar angle in different azimuth angles, the display screen is viewed in the same direction as long as the polar angle is the same in any azimuth angle range of 0 to 360 °. Therefore, when the display panel is used as a peep-proof screen, the picture can be seen the same no matter which azimuth angle is obliquely viewed, and the full-direction peep-proof can be achieved within the narrow visual angle range.

No matter which direction is seen, the display content on the display panel can not be seen within a certain squint range, so that the peep-proof effect of the display panel can be 360-degree full-direction multi-angle peep-proof, and the peep-proof effect is greatly improved compared with the related technology.

The utility model provides a display panel, include the two-layer relative protective layer that sets up respectively in the liquid crystal layer both sides, every layer of protective layer is all including a plurality of archs that have the slope lateral wall, and two-layer arch distributes respectively on array substrate and various membrane base plate, as array substrate and the partly of various membrane base plate, a deflection angle for changing the liquid crystal molecule, increase oblique sight light leakage effect, the narrow visual angle effect of reinforcing, and because the bellied setting of many places, make the peep-proof effect homogeneous phase of each angle the same, thereby reach more meticulous diversified peep-proof.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: in accordance with the embodiments of the present invention as set forth above, these embodiments are not exhaustive and do not limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention. The embodiment was chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its practical application in conjunction with the modifications made to the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. A display panel comprises an array substrate, a color film substrate and a liquid crystal layer, wherein the array substrate and the color film substrate are arranged oppositely, and the liquid crystal layer is clamped between the array substrate and the color film substrate, and the display panel is characterized in that:

the color film substrate comprises a first substrate, a color resistance layer, a visual angle control electrode and a protective layer, wherein the color resistance layer, the visual angle control electrode and the protective layer are stacked on the surface, facing the liquid crystal layer, of the first substrate;

the array substrate comprises a second substrate and an active array, a common electrode, a pixel electrode and a passivation layer which are stacked on the surface of the second substrate facing the liquid crystal layer;

wherein the protective layer and the passivation layer respectively include a plurality of first protrusions and second protrusions having inclined sidewalls, the plurality of first protrusions and the second protrusions being disposed toward the liquid crystal layer.

2. The display panel according to claim 1, characterized in that: the first protrusions of the protection layer and the second protrusions of the passivation layer are arranged in a staggered mode at a certain distance from each other in a direction perpendicular to the display panel.

3. The display panel according to claim 1, characterized in that: the visual angle control electrode is positioned on the surface of the first bulge facing the liquid crystal layer, and/or the pixel electrode is positioned on the surface of the second bulge facing the liquid crystal layer;

or the visual angle control electrode is positioned on the surface, facing away from the liquid crystal layer, of the protective layer where the first protrusion is positioned, and/or the pixel electrode is positioned on the surface, facing away from the liquid crystal layer, of the passivation layer where the second protrusion is positioned.

4. The display panel according to claim 1, characterized in that: the viewing angle control electrode and/or the pixel electrode is a continuous whole electrode layer.

5. The display panel according to claim 1, characterized in that: the viewing angle control electrode and/or the pixel electrode includes a plurality of electrode bars insulated from each other.

6. The display panel according to claim 1, characterized in that: the viewing angle control electrode covers at least a portion of each of the first protrusions, and/or the pixel electrode covers at least a portion of each of the second protrusions.

7. The display panel according to claim 1, characterized in that: the viewing angle control electrode is distributed around the plurality of first protrusions and does not cover the plurality of first protrusions, and/or the pixel electrode is distributed around the plurality of second protrusions and does not cover the plurality of second protrusions.

8. The display panel according to claim 1, characterized in that: the plurality of first protrusions and the plurality of second protrusions include a circular truncated cone, a prism, a cone and a triangle.

9. The display panel according to claim 1, characterized in that: further comprising:

the first polaroid is positioned on the surface of the first substrate, which is opposite to the liquid crystal layer;

and the second polaroid is positioned on the surface of the second substrate, which is opposite to the liquid crystal layer, and the first polaroid and the second polaroid are both circular polaroids.

10. The display panel according to claim 1, characterized in that: the height of each first protrusion and the height of each second protrusion are smaller than half of the thickness of the liquid crystal layer.

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