CN117518571A

CN117518571A - Display panel and display device

Info

Publication number: CN117518571A
Application number: CN202310377160.7A
Authority: CN
Inventors: 李宗珀; 曹丹; 李君杰; 杨红
Original assignee: TCL China Star Optoelectronics Technology Co Ltd
Current assignee: TCL China Star Optoelectronics Technology Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2024-02-06
Also published as: WO2024198336A1

Abstract

The embodiment of the invention provides a display panel and display equipment, wherein the display panel comprises: the first polarizing layer, the base plate and the second polarizing layer are stacked, wherein the first polarizing layer comprises at least one splicing gap, the base plate comprises at least one shading part which is arranged corresponding to the at least one splicing gap, the second polarizing layer comprises at least one light path steering structure, and the at least one light path steering structure is arranged corresponding to the at least one shading part so as to change light paths around the shading part. According to the method, the light path steering structure is arranged around the shading part to change the light path around the shading part, so that the spliced polaroid is utilized to realize large-size display, and the shading area is prevented from being formed at the splicing part, so that the picture display of the shading area is influenced.

Description

Display panel and display device

Technical Field

The invention relates to the technical field of display, in particular to a display panel and display equipment.

Background

As a necessary material of the liquid crystal panel, the liquid crystal is rotated by applying voltage to the liquid crystal, and two polarizers with 90 degrees up and down are used in a matching way, so that the light is controlled to pass through to realize display; the effect of the polarizer thus affects the display effect of the final panel.

At present, most large-size display panels realize attachment of a lower polaroid in a splicing mode, however, due to limitation of cutting and attaching precision of the polaroid, problems such as light leakage and the like exist at a splicing position of the polaroid, and display of the liquid crystal display panel is affected. In the prior art, the spliced part is normally shielded, and a larger area which cannot normally display the picture appears in the display panel, so that the display effect is affected.

Disclosure of Invention

The embodiment of the invention provides a display panel and display equipment, which aim to solve the problems that a spliced polaroid is easy to fail and display is influenced by the arrangement of a shading area in the prior art.

To solve the above-mentioned problem, in a first aspect, the present application provides a display panel, the display panel comprising:

the first polarizing layer is formed by splicing a plurality of first polaroids, and the first polarizing layer further comprises at least one splicing gap;

the substrate is arranged above the first polarizing layer and comprises at least one shading part, and the at least one shading part is arranged corresponding to the at least one splicing gap;

the second polarizing layer is arranged above the substrate, the second polarizing layer comprises at least one light path steering structure, the at least one light path steering structure is arranged corresponding to the at least one shading part, and the at least one light path steering structure is used for changing the light path around the at least one shading part, so that partial light rays originally perpendicularly emitted around the at least one shading part are emitted from above the at least one shading part after the direction of the at least one light path steering structure is changed.

In some embodiments, the second polarizing layer is a multi-film structure, the second polarizing layer comprising:

a first optical protection layer;

the polarizing sub-layer is arranged below the first optical protection layer;

a second optical protection layer disposed below the polarizing sublayer;

the refractive structure layer is arranged below the second optical protection layer, and the light path steering structure is arranged in the refractive structure layer.

In some embodiments, the refractive structure layer is a multi-film structure, the refractive structure layer comprising:

the optical path turning structure is arranged in the first optical refractive layer;

and the second optical refractive layer is arranged above the first optical refractive layer and comprises a convex part filled in the light path turning structure.

In some embodiments, the refractive index of the first optical refractive layer is less than the refractive index of the second optical refractive layer.

In some embodiments, the refractive index of the second optical protection layer is less than the refractive index of the second optical refractive layer.

In some embodiments, the cross-sectional shape of the light path turning structure includes a connection face corresponding to the light shielding portion, and a light path redirecting face connected to the connection face.

In some embodiments, the light path turning structure is internally a stepped structure.

In some embodiments, the height of the light path turning structure is smaller than the thickness of the first optical refractive layer in a direction perpendicular to the display panel.

In some embodiments, the first polarizing layer includes a plurality of splice slits, the substrate includes a plurality of light shielding portions, and the second polarizing layer includes a plurality of light path steering structures, where the plurality of light path steering structures, the plurality of light shielding portions and the plurality of splice slits are disposed in one-to-one correspondence.

In a second aspect, embodiments of the present application further provide a display device including a display panel as described in any one of the above.

The beneficial effects are that: the embodiment of the invention provides a display panel and display equipment, wherein the display panel comprises: the first polarizing layer, the base plate and the second polarizing layer are stacked, wherein the first polarizing layer comprises at least one splicing gap, the base plate comprises at least one shading part which is arranged corresponding to the at least one splicing gap, the second polarizing layer comprises at least one light path steering structure, and the at least one light path steering structure is arranged corresponding to the at least one shading part so as to change light paths around the shading part. According to the method, the light path steering structure is arranged around the shading part to change the light path around the shading part, so that the spliced polaroid is utilized to realize large-size display, and the shading area is prevented from being formed at the splicing part, so that the picture display of the shading area is influenced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an embodiment of a display panel according to the present disclosure;

FIG. 2 is a schematic structural diagram of an embodiment of a second polarizing layer according to the present disclosure;

FIG. 3 is a schematic view of an optical path in a refractive structure layer according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of another embodiment of an optical path steering structure according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In this application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

The embodiment of the invention provides a display panel and display equipment. The following will describe in detail.

Fig. 1 is a schematic structural diagram of an embodiment of a display panel according to an embodiment of the present application. In the embodiment shown in fig. 1, the display panel may include:

the first polarizing layer 10, the first polarizing layer 10 is formed by splicing a plurality of first polarizers 101, and the first polarizing layer further comprises at least one splicing gap.

The substrate 20, the substrate 20 is disposed above the first polarizing layer 10, and the substrate 20 includes at least one light shielding portion 201, where the at least one light shielding portion 201 corresponds to the at least one splice gap.

The second polarizing layer 30, the second polarizing layer 30 is disposed above the substrate 20, the second polarizing layer 30 includes at least one light path turning structure 301, the at least one light path turning structure 301 is disposed corresponding to the at least one light shielding portion 201, and the at least one light path turning structure 301 is used to change a light path around the at least one light shielding portion 201. Specifically, the light rays originally emitted vertically around the light shielding portion 201 can be controlled to be emitted from above the light shielding portion 201 after the light path is turned to the direction of the structure conversion.

The display panel provided by the application comprises: the first polarizing layer, the base plate and the second polarizing layer are stacked, wherein the first polarizing layer comprises at least one splicing gap, the base plate comprises at least one shading part which is arranged corresponding to the at least one splicing gap, the second polarizing layer comprises at least one light path steering structure, and the at least one light path steering structure is arranged corresponding to the at least one shading part so as to change light paths around the shading part. According to the method, the light path steering structure is arranged around the shading part to change the light path around the shading part, so that the spliced polaroid is utilized to realize large-size display, and the shading area is prevented from being formed at the splicing part, so that the picture display of the shading area is influenced.

In fig. 1, the first polarizing layer 10 is formed by splicing a plurality of first polarizers 101, so that the effective width of the polarizers can be increased, and a large-sized display panel can be manufactured. And a splice gap appears in the spliced first polarizing layer 10; the application is through setting up the shading portion in base plate 20 in order to shelter from the splice gap, avoids splice gap department light leak.

On the basis of this, the present application prepares the optical path turning structure 301 in the second polarizing layer 30, and the optical path turning structure 301 is disposed corresponding to the light shielding portion. The light path steering structure can change the trend of light around the shading part, so that the light around the shading part can be emitted in a concentrated way, the size of the shading part is reduced visually, and the overall display effect of the display panel is improved.

Fig. 2 is a schematic structural diagram of an embodiment of a second polarizing layer according to the present application. The second polarizing layer 30 provided herein may be a multi-film structure; specifically, the method comprises the following steps:

a first optical protection layer 302;

a polarizing sub-layer 303, the polarizing sub-layer 303 being disposed under the first optical protection layer 302;

a second optical protection layer 304, the second optical protection layer 304 being disposed under the bias sublayer 303;

the refractive structure layer 305, the refractive structure layer 305 is disposed under the second optical protection layer 304, and the refractive structure 301 is disposed in the refractive structure layer 305.

Referring to fig. 2, the refractive structure layer shown in fig. 2 may be a multi-layer structure. Specifically, a first optical refractive layer 3051 and a second optical refractive layer 3052 may be included; the light path turning structure 301 is disposed in the first optical refractive layer 3051, and the second optical refractive layer 3052 is disposed above the first optical refractive layer 3051, and includes a convex portion 3053 filled inside the light path turning structure 301.

That is, in the embodiment of the present application, the optical path turning structure 301 may be a groove-like structure provided in the first optical refractive layer 3051, with which the optical path around the light shielding portion may be changed. In order to ensure the flatness of the refractive structure layer 305 as a whole, the optical path turning structure 301 needs to be filled with other materials. Specifically, the material corresponding to the second optical refractive layer 3052 may be directly filled, and the second optical refractive layer 3052 is prepared above the first optical refractive layer 3051 and inside the optical path turning structure 301.

In an actual polarizer, the second light refracting layer 3052 also serves to bond the first light refracting layer 3051 and the second optical protecting layer 304. However, since the light path around the light shielding portion is mainly changed, that is, the light path at the light path turning structure is changed, the thickness of the second light refracting layer 3052 in the direction perpendicular to the display panel is not very large; the method can be specifically set according to actual requirements, and is not limited herein.

Meanwhile, in the actual polarizer, an adhesive is further disposed between the first optical protection layer 302 and the polarizing sub-layer 303 to bond the first optical protection layer 302 and the polarizing sub-layer 303; similarly, an adhesive is also provided between the second optical protection layer 304 and the polarizing sublayer 303 to bond the second optical protection layer 304 and the polarizing sublayer 303. In some embodiments, the adhesive may be a water gel or a UV gel, or other materials that can adhere to the film layer, etc.

Fig. 3 is a schematic view of an optical path in a refractive structure layer according to an embodiment of the present application. In fig. 3, the light path turning structure is disposed in the first optical refractive layer and corresponds to the light shielding portion; the second optical refractive layer includes a portion formed over the first optical refractive layer and a portion filled in the optical path turning structure. Above the second optical refraction layer is a second optical protection layer.

In the present application, the refractive index of the first optical refractive layer is smaller than the refractive index of the second optical refractive layer; and the refractive index of the second optical protection layer is also smaller than that of the second optical refractive layer. In fig. 3, the light rays emitted from the light shielding portion in a straight line reach the optical path turning structure, are deflected, and enter the second optical refractive layer in a direction toward the middle region of the optical path turning structure. By the arrangement, when a human eye views the display panel, the light shielding part still emits light to normally display a picture, and the problem that the picture cannot be normally displayed due to the fact that the light shielding part shields the light is avoided. The refractive index of the second optical protection layer is smaller than that of the second optical refractive layer, so that light rays entering the second optical protection layer are scattered compared with light rays entering the second optical refractive layer; i.e. the light rays originally concentrated in the second optical refractive layer diverge in the second optical protective layer.

Although the application hopes that the light around the shading part can be emitted from the corresponding position of the shading part, so as to avoid the influence of the shading part on display caused by no light emission; however, if too much light is concentrated and emitted from the position corresponding to the light shielding portion, a color mixing phenomenon may be generated to affect the display of the screen. Therefore, in the present application, when the light rays are incident into the first optical refractive layer in a straight line and the light rays around the light path steering structure (or around the light shielding part) enter the second optical refractive layer, the light rays are deflected; and the deflected light is concentrated into the light path diverting structure. The concentrated light in the light path steering structure is emitted into the second light protection layer and then diverges. Finally, the light rays emitted out of the second light protection layer still have a concentrated trend compared with the light rays emitted into the first light refraction layer; so that the light is still emitted from the corresponding position of the light shielding part.

In the embodiment of the present application, the cross-sectional shape of the optical path turning structure may include a connection surface corresponding to the light shielding portion, and an optical path turning surface connected to the connection surface. Specifically, in the vertical direction, the connection surface is located above the light shielding portion and is attached to the light shielding portion, and the orthographic projection of the connection surface and the orthographic projection of the light shielding portion completely coincide. The light path turning surface is connected with the connecting surface and is arranged in a direction deviating from the vertical direction, and the orthographic projection of the light path turning surface and the orthographic projection of the shading part are overlapped and mutually connected but not overlapped on the same horizontal plane.

In some embodiments, the cross-sectional shape of the light path turning structure may be an inverted trapezoid structure or a circular arc structure. When the section of the light path steering structure is an inverted trapezoid structure, the light path steering structure comprises a connecting surface corresponding to the shading part, namely the bottom surface of the inverted trapezoid structure; the light path steering device also comprises a light path steering surface connected with the connecting surface, namely two inclined side surfaces of the inverted trapezoid structure. In the application, the angle of the light emitted from the corresponding position above the shading part can be adjusted by adjusting the size of the inverted trapezoid structure or the radian and the radius of the arc structure; thereby changing the viewing angle range corresponding to the light shielding portion. Therefore, in the embodiment of the present application, the width of the light path turning structure and the width of the light shielding portion are not limited in the horizontal direction. The light can be emitted from the corresponding position above the shading part by adjusting the size of the light path steering structure and the refractive index of different film layers in the second polarizing layer; meanwhile, the light rays are not too concentrated, so that the problems of color mixing and the like are avoided.

As shown in fig. 4, another embodiment of the optical path turning structure provided in the embodiment of the present application is shown. In other embodiments, the light path steering structure may be a stepped structure; this may further concentrate the light. And the whole section of the whole light path steering structure is in an inverted trapezoid shape or an arc shape. Meanwhile, in the direction perpendicular to the display panel, the height of the light path turning structure 301 needs to be smaller than the thickness of the first optical refractive layer; to ensure connectivity of the first optical refractive layer.

In the foregoing embodiment, the first polarizing layer includes two spliced first polarizers; in other embodiments, the first polarizing layer may include more than two spliced first polarizers; at this time, the first polarizing layer includes a plurality of splicing slits, that is, the first polarizing layer may be spliced by more than two first polarizers. Correspondingly, the substrate also comprises a plurality of shading parts, and the second polarizing layer also comprises a plurality of light path steering structures; and a plurality of light path steering structures, a plurality of shading parts and a plurality of splicing gaps are arranged in a one-to-one correspondence manner.

It should be noted that, in the above display panel embodiments, only the above structures are described, and it should be understood that, in addition to the above structures, any other necessary structures, such as a buffer layer, an interlayer dielectric layer (ILD), etc., may be included in the display panel according to the embodiments of the present invention, which is not limited herein.

The present application also provides a display device comprising a display panel as claimed in any one of the above; the specific structure of the display panel may refer to the foregoing, and will not be described herein. The display device provided by the embodiment of the application comprises: the first polarizing layer, the base plate and the second polarizing layer are stacked, wherein the first polarizing layer comprises at least one splicing gap, the base plate comprises at least one shading part which is arranged corresponding to the at least one splicing gap, the second polarizing layer comprises at least one light path steering structure, and the at least one light path steering structure is arranged corresponding to the at least one shading part so as to change light paths around the shading part. According to the method, the light path steering structure is arranged around the shading part to change the light path around the shading part, so that the spliced polaroid is utilized to realize large-size display, and the shading area is prevented from being formed at the splicing part, so that the picture display of the shading area is influenced.

In the foregoing embodiments, the descriptions of the embodiments are focused on, and the portions of one embodiment that are not described in detail in the foregoing embodiments may be referred to in the foregoing detailed description of other embodiments, which are not described herein again.

In the implementation, each unit or structure may be implemented as an independent entity, or may be implemented as the same entity or several entities in any combination, and the implementation of each unit or structure may be referred to the foregoing method embodiments and will not be repeated herein.

The foregoing has described in detail a display panel and a display device according to embodiments of the present invention, and specific examples have been applied to illustrate the principles and embodiments of the present invention, where the foregoing examples are provided to assist in understanding the method and core idea of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present invention, the present description should not be construed as limiting the present invention.

Claims

1. A display panel, the display panel comprising:

2. The display panel of claim 1, wherein the second polarizing layer is a multi-film structure, the second polarizing layer comprising:

a first optical protection layer;

the polarizing sub-layer is arranged below the first optical protection layer;

a second optical protection layer disposed below the polarizing sublayer;

3. The display panel of claim 2, wherein the refractive structure layer is a multi-layer structure, the refractive structure layer comprising:

4. The display panel of claim 3, wherein the refractive index of the first optical refractive layer is less than the refractive index of the second optical refractive layer.

5. A display panel according to claim 3, wherein the refractive index of the second optical protection layer is smaller than the refractive index of the second optical refractive layer.

6. The display panel according to claim 1, wherein a cross-sectional shape of the light path turning structure includes a connection face corresponding to the light shielding portion, and a light path redirecting face connected to the connection face.

7. The display panel of claim 1, wherein the light path turning structure is internally of a stepped structure.

8. The display panel of claim 1, wherein the height of the light path turning structure is less than the thickness of the first optical refractive layer in a direction perpendicular to the display panel.

9. The display panel according to claim 1, wherein the first polarizing layer includes a plurality of splice slits, the substrate includes a plurality of light shielding portions, the second polarizing layer includes a plurality of light path turning structures, and the plurality of light path turning structures, the plurality of light shielding portions and the plurality of splice slits are disposed in one-to-one correspondence.

10. A display device comprising the display panel according to any one of claims 1-9.