CN113608383A - Display panel and display device - Google Patents

Abstract

The embodiment of the application provides a display panel and a display device, relates to the technical field of display, and is used for improving the light transmission of a camera area of the display panel. The display panel is provided with a display area and a camera area; the display panel comprises an array substrate, an opposite substrate, a liquid crystal layer and a light-transmitting part; the opposite substrate and the array substrate are arranged in an involution way; the liquid crystal layer is arranged between the array substrate and the opposite substrate; the light-transmitting part is arranged between the array substrate and the opposite substrate and is positioned in the camera area; the liquid crystal layer is distributed around the light transmission part.

Description

Display panel and display device

Technical Field

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

Background

With the development of display technology, the display device of the full-screen gradually becomes one of the mainstream designs of the display device due to the advantages of large screen ratio, good visualization effect, contribution to split screen, higher technological sense and the like. The display device of the camera under the screen is a display device with a comprehensive screen, and the camera is arranged below a display panel of the display device, so that the influence on a visual picture of the display device is small, and the design of the display device with potential at present is formed.

However, in a display device using an off-screen camera, the requirement for the light transmittance of the camera area of the display panel is high, and how to provide a display panel with a high light transmittance of the camera area becomes a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

The embodiment of the invention provides a display panel and a display device, which are used for improving the light transmittance of a camera area of the display panel.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, a display panel is provided with a display area and a camera area; the display panel comprises an array substrate, an opposite substrate, a liquid crystal layer and a light-transmitting part; the opposite substrate and the array substrate are arranged in an involutory mode; the liquid crystal layer is arranged between the array substrate and the opposite substrate; the light-transmitting part is arranged between the array substrate and the opposite substrate and is positioned in the camera area; the liquid crystal layer is distributed on the periphery of the light transmission part.

Optionally, the light-transmitting portion is a lens structure.

Optionally, the surface of the light-transmitting portion close to the array substrate is a convex surface.

Optionally, the light-transmitting portion includes a fresnel lens structure, a surface of the light-transmitting portion close to the array substrate has a plurality of insections, and the insections form a plurality of concentric circles on the surface of the light-transmitting portion.

Optionally, a gap is formed between the light-transmitting portion and the array substrate, and the light-transmitting portion is in contact with the counter substrate.

Optionally, the light-transmitting portion is of a solid column structure or a hollow column structure.

Optionally, the light-transmitting portion is in contact with the array substrate and the counter substrate, respectively.

Optionally, an outline of an orthographic projection of the light-transmitting portion on the array substrate is the same as an outline of the camera area.

Optionally, the display panel further includes a support layer disposed between the array substrate and the opposite substrate; the supporting layer is positioned in the effective display area and outside the camera area; the light-transmitting part is made of the same material as the support layer.

Optionally, the light-transmitting portion is made of an organic film or a photolithographic material.

In a second aspect, a display device is provided, which includes the display panel of the first aspect and a camera located at a backlight side of the display panel, where the camera is located below the camera area.

The liquid crystal layer in the camera area is arranged by the light transmission part arranged in the camera area of the display panel and the light transmission part. The light transmittance of the light-transmitting part is higher than that of liquid crystal in the liquid crystal layer, so that the light transmittance of the camera area of the display panel is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

fig. 2A is a structural diagram of a display module according to an embodiment of the present disclosure;

fig. 2B is a structural diagram of a backlight source provided in the embodiment of the present application;

fig. 2C is a block diagram of another backlight source provided in this embodiment of the present application;

fig. 3A is a structural diagram of a display panel according to an embodiment of the present disclosure;

fig. 3B is a structural diagram of another display panel provided in the embodiment of the present application;

fig. 3C is a structural diagram of another display panel provided in the embodiment of the present application;

fig. 3D is a structural diagram of another display panel provided in the embodiment of the present application;

fig. 4 is a top view of a display panel according to an embodiment of the present disclosure;

FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;

fig. 6 is a cross-sectional view of a display panel according to an embodiment of the present application;

fig. 7 is a cross-sectional view of another display panel provided in an embodiment of the present application;

fig. 8A is a cross-sectional view of a light-transmitting portion according to an embodiment of the present disclosure;

fig. 8B is a top view of a light-transmitting portion according to an embodiment of the present disclosure;

fig. 9A is a cross-sectional view of another display panel provided in the embodiment of the present application;

fig. 9B is a perspective view of a light-transmitting portion according to an embodiment of the present disclosure;

fig. 10A is a cross-sectional view of another display panel provided in the embodiment of the present application;

fig. 10B is a perspective view of another light-transmitting portion according to an embodiment of the present application.

Reference numerals:

1000-a display device; 100-a display module; 110-middle frame; 120-a housing; 130-a cover plate; 1-a display panel; 2-a backlight module; 21-a light source; 22-a light guide plate; 23-an optical film; 24-a reflective sheet; 25-a diffuser plate; 31-an array substrate; 310-a first substrate; 311-pixel electrode layer; 312-a passivation layer; 313-a lower alignment film; 32-a counter substrate; 320-a second substrate; 321-a color filter layer; 322-common electrode layer; 323-upper alignment film; 33-a liquid crystal layer; 34-frame sealing glue; 35-lower polarization layer; 36-an upper polarizing layer; 37-a conductive layer; 38-a support layer; 39-a light-transmitting portion; 391-insection; AA-active display area; s-camera area; d-sub-pixel unit.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

Further, in the present application, directional terms such as "upper" and "lower" are defined with respect to a schematically-disposed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts that are used for descriptive and clarity purposes and that will vary accordingly with respect to the orientation in which the components are disposed in the drawings.

In the present application, unless expressly stated or limited otherwise, the term "coupled" is to be construed broadly, e.g., "coupled" may be a fixed connection, a removable connection, or an integral part; may be directly connected or indirectly connected through an intermediate. "and/or" is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The embodiment of the present application provides a display device, and the display device related to the embodiment of the present application may be, for example: tablet personal computers, mobile phones, electronic readers, remote controllers, Personal Computers (PCs), notebook computers, Personal Digital Assistants (PDAs), vehicle-mounted devices, network televisions, wearable devices, televisions, and the like.

In the embodiments of the present application, specific forms of the display device are not particularly limited, and for convenience of description, the display device is a mobile phone.

As shown in fig. 1, the display device 1000 mainly includes a display module 100, a middle frame 110, a housing 120 and a cover 130, wherein the display module 100 and the middle frame 110 are disposed in the housing 120.

The middle frame 110 is located between the display module 100 and the housing 120, and a surface (a surface facing the housing 120) of the middle frame 110 away from the display module 100 is used for mounting internal components such as a battery, a circuit board, a camera (camera), and an antenna.

The cover plate 130 is located on a side of the display module 100 away from the middle frame 110, and the cover plate 130 may be, for example, Cover Glass (CG), which may have a certain toughness.

The display module 100 has a light-emitting side capable of viewing a display screen and a back side opposite to the light-emitting side, the middle frame 110 is disposed on the back side of the display module 100, and the cover plate 130 is disposed on the light-emitting side of the display module 100.

The display module 100 includes a Display Panel (DP), for example, as shown in fig. 2A, the display panel 1 may be a thin film transistor liquid crystal display (TFT-LCD). In this case, the display module 100 further includes a backlight unit (BLU) 2 for providing a light source to the TFT-LCD 1.

Regarding the backlight module 2, in one possible embodiment, the backlight module 2 is a side-in type backlight module.

As shown in fig. 2B, the backlight module 2 includes a light source 21, a light guide plate 22, an optical film 23, and a reflective sheet 24. The light source 21 is disposed on a side surface of the light guide plate 22, the optical film 23 is disposed on a light exit side of the light guide plate 22, and the reflective sheet 24 is disposed on a side of the light guide plate 22 opposite to the light exit side.

In another possible embodiment, the backlight module 2 is a direct type backlight module.

As shown in fig. 2C, the backlight module 2 includes a light source 21, a diffusion plate 25, an optical film 23, and a reflection sheet 24. The light source 21 is located between the diffusion plate 25 and the reflection sheet 24, and the optical film 23 is disposed on the diffusion plate 25 side away from the light source 21.

With respect to TFT-LCD1, in one possible embodiment, TFT-LCD1 may be, for example, a Twisted Nematic (TN) type liquid crystal display panel.

As shown in fig. 3A, the TN liquid crystal display panel includes an array substrate 31, an opposite substrate 32, a liquid crystal layer 33, a sealant 34, a lower polarization layer 35, and an upper polarization layer 36. The opposite substrate 32 and the array substrate 31 are arranged in a matching manner, the opposite substrate 32 and the array substrate 31 are matched together through the frame sealing glue 34, and the frame sealing glue 34, the opposite substrate 32 and the array substrate 31 form a closed area. The liquid crystal layer 33 is disposed between the array substrate 31 and the counter substrate 32 and located in the closed region, and the liquid crystal layer 33, the frame sealing adhesive 34, the counter substrate 32, and the array substrate 31 constitute a liquid crystal cell.

The array substrate 31 may include a first substrate 310, a Thin Film Transistor (TFT) disposed on the first substrate 310, a pixel electrode layer 311, a passivation layer 312, and a lower alignment Film 313. A passivation layer 312 is disposed on the side of the TFT away from the first substrate 310, a pixel electrode layer 311 is disposed on the side of the passivation layer 312 away from the first substrate 310, and a lower alignment film 313 is disposed on the side of the pixel electrode layer 311 away from the first substrate 310.

The opposite substrate 32 may include a second substrate 320, a Black Matrix (BM) layer disposed on the second substrate 320, a color filter layer 321, an insulating cover layer (OC), a common electrode layer 322, and an upper alignment film 323.

The BM is disposed on the second substrate 320 to define a light emitting area of the TFT-LCD 1. The color filter layer 321 is disposed on the second substrate 320 and located in the light emitting region defined by the BM, wherein the color filter layer 321 may overlap with the BM, for example. The color filter layer 321 is provided on the counter substrate 32, and in this case, the counter substrate 32 may also be referred to as a color filter substrate.

The OC is disposed on the side of the color filter layer 321 remote from the second substrate 320. The common electrode layer 322 is disposed on a side of the OC remote from the second substrate 320. The upper alignment film 323 is disposed on the common electrode layer 322 on a side away from the second substrate 320.

As can be seen from the above description, the backlight module 2 is disposed at the back of the TFT-LCD1 for providing light source to the TFT-LCD 1.

The display principle of the display device 1000 is as follows: the backlight module 2 emits white light, which is polarized in a specific polarization direction through the lower polarization layer 35 and then enters the array substrate 31, and then is filtered by the liquid crystal layer 33 and the color filter layer 321 on the opposite substrate 32 to form polarized light of three primary colors of red, green and blue.

When the polarization direction of the polarized light is perpendicular to the polarization direction of the upper polarizing layer 36, the polarized light cannot pass through the upper polarizing layer 36, and no light exits.

When the polarization direction of the polarized light is parallel to the polarization direction of the upper polarization layer 36, the polarized light can pass through the upper polarization layer 36, and the light intensity of the emergent light is strongest at this time.

Since the liquid crystal in the liquid crystal layer 33 has a polarization property for polarized light, a specific molecular arrangement direction may change the polarization direction of the polarized light. The pixel circuit on the array substrate 31 transmits a driving signal to each sub-pixel (sub-pixel), and the deflection direction of the liquid crystal in each sub-pixel is changed to change the polarization direction of the light emitted from the sub-pixel, so that the included angle between the polarized light and the upper polarization layer 36 can be controlled, and the amount of light emitted from the upper polarization layer 36 in each sub-pixel can be controlled to display different gray scale images.

In another possible embodiment, the TFT-LCD1 may be, for example, an In Plane Switch (IPS) type liquid crystal display panel.

As shown in fig. 3B, the IPS mode liquid crystal display panel also includes an array substrate 31, an opposite substrate 32, a liquid crystal layer 33, a sealant 34, a lower polarization layer 35, and an upper polarization layer 36.

The IPS mode liquid crystal display panel is different from the TN mode liquid crystal display panel shown in fig. 3A in that: the common electrode layer 322 and the pixel electrode layer 311 are both disposed on the array substrate.

For example, as shown in fig. 3B, the common electrode layer 322 includes a plurality of first bar electrodes, the first bar electrodes located in the same sub-pixel unit are electrically connected, and the first bar electrodes located in the plurality of sub-pixel units may or may not be electrically connected. The pixel electrode layer 311 includes a plurality of second stripe electrodes, and the plurality of second stripe electrodes located in the same sub-pixel unit are electrically connected, and the first stripe electrodes and the second stripe electrodes are arranged at intervals.

The common electrode 322 and the pixel electrode 311 may be disposed in the same layer, or may be disposed in different layers. Fig. 3B illustrates only that the common electrode layer 322 and the pixel electrode layer 311 are disposed in different layers, and the common electrode layer 322 is disposed on the side of the pixel electrode layer 311 close to the first substrate 310.

In addition, for the IPS mode liquid crystal display panel, the pixel electrode layer 311 may be made of the same material as the source/drain metal layer of the TFT, and the pixel electrode layer 311 is made of an opaque metal electrode.

In addition, as shown in fig. 3B, the IPS mode liquid crystal display panel further includes a conductive layer 37, the conductive layer 37 is located between the second substrate 320 and the upper polarization layer 36, and the conductive layer 37 is used for shielding an external electric field and preventing the external electric field from affecting the liquid crystal deflection.

In another possible embodiment, the TFT-LCD1 may be, for example, a Fringe Field Switching (FFS) type liquid crystal display panel.

As shown in fig. 3C, the FFS type lcd panel also includes an array substrate 31, an opposite substrate 32, a liquid crystal layer 33, a sealant 34, a lower polarizer 35, an upper polarizer 36, and a conductive layer 37.

The FFS mode liquid crystal display panel is different from the IPS mode liquid crystal display panel shown in fig. 3B in that: the electrodes adjacent to the first substrate 310 are bulk electrodes and no longer include a plurality of strip electrodes.

In one possible embodiment, as shown in fig. 3C, the FFS type liquid crystal display panel is different from the IPS type liquid crystal display panel as shown in fig. 3B in that: the portion of the common electrode layer 322 located in each sub-pixel unit is in a block shape, the common electrode layer 322 may be in a planar shape, for example, and the common electrode layer 322 no longer includes a plurality of first stripe electrodes.

In another possible embodiment, as shown in fig. 3D, the FFS type liquid crystal display panel is different from the IPS type liquid crystal display panel as shown in fig. 3B in that: the common electrode layer 322 is disposed on a side of the pixel electrode layer 311 away from the first substrate 310, a portion of the pixel electrode layer 311 located in each sub-pixel unit is in a block shape, and the pixel electrode layer 311 no longer includes a plurality of second strip-shaped electrodes.

Regardless of which type of display panel the TFT-LCD1 is, for a display device 1000 having an off-screen camera, the display device 1000 includes a display panel 1 and a camera located on the backlight side of the display panel 1. The display panel 1(TFT-LCD1) is provided with a camera area, and the camera is located below the camera area. External light passes through the camera area of the display panel 1 from the side of the opposite substrate 32, then passes through the array substrate 31, and finally enters the camera, so that the camera can realize the shooting function.

Hereinafter, the TFT-LCD1 provided with a camera below according to the embodiment of the present application will be described in detail by way of several examples. For convenience of explanation, the FFS type liquid crystal display panel shown in fig. 3D will be described as an example.

Example 1

In the embodiment of the present application, as shown in fig. 4, in a plan view, the TFT-LCD1 is provided with a display area (AA) and a camera area S in the TFT-LCD 1.

As seen in cross-section, the TFT-LCD1 includes an array substrate 31, an opposite substrate 32, a liquid crystal layer 33, a lower polarizing layer 35, an upper polarizing layer 36, a conductive layer 37, and a support layer 38, as shown in fig. 5 (a cross-sectional view along direction C-C of fig. 4).

Regarding the structure of the array substrate 31, in some embodiments of the present application, as shown in fig. 5, the array substrate 31 includes a first substrate 310 and a TFT and a lower alignment film 313 sequentially stacked on the first substrate 310. The first substrate 310 and the lower alignment film 313 are located in the display area AA and the camera area S of the TFT-LCD1, and the TFTs are located only in the display area AA of the TFT-LCD 1. Thus, the TFT can be prevented from blocking the light of the camera area S.

The material of the first substrate 310 may be glass. In this case, the light transmittance of the second substrate 320 is better.

It should be noted that the array substrate 31 further includes film layers such as a pixel electrode layer 311, a common electrode layer 322, and a passivation layer 312, for clarity, fig. 5 is not shown, and the structure of the pixel electrode layer 311, the common electrode layer 322, and the passivation layer 312 can refer to fig. 3D. The pixel electrode layer 311 and the common electrode layer 322 are located in the display area AA of the TFT-LCD 1. The passivation layer 312 may be located in the display area AA and the camera area S of the TFT-LCD1, and the passivation layer 312 may be located only in the display area AA of the TFT-LCD 1.

Regarding the structure of the opposite base plate 32, in some embodiments of the present application, as shown in fig. 5, the opposite base plate 32 includes a second substrate 320, a BM, a color filter layer 321, an OC, and an upper alignment film 323 disposed on the second substrate 320.

Wherein the second substrate 320 is located in the display area AA and the camera area S of the TFT-LCD 1. In some embodiments, the material of the second substrate 320 may be glass. In this case, the light transmittance of the second substrate 320 is better.

Regarding the BM, illustratively, as shown in fig. 5, the BM is disposed on the second substrate 320, and the BM is located in the display area AA of the TFT-LCD 1. The BM serves to define the light emitting area of the TFT-LCD 1.

Regarding the color filter layer 321, for example, as shown in fig. 5, the color filter layer 321 is disposed on the second substrate 320, located in the display area AA of the TFT-LCD1, and located in the light emitting area defined by the BM.

As shown in fig. 5, the display area AA of the TFT-LCD1 includes sub-pixel cells D that emit light of a plurality of colors including at least a first color, a second color, and a third color, which are three primary colors (e.g., red, green, and blue).

In the case where the backlight source provided by the backlight module 2 is white light, the color filter layer 321 includes a first color filter unit located in the sub-pixel unit for emitting the first color light, a second color filter unit located in the sub-pixel unit for emitting the second color light, and a third color filter unit located in the sub-pixel unit for emitting the third color light.

Regarding the OC, for example, as shown in fig. 5, the OC is provided on the side of the color filter layer 321 away from the second substrate 320, in the display area AA and the camera area S of the TFT-LCD 1.

As for the upper alignment film 323, illustratively, as shown in fig. 5, the upper alignment film 323 is disposed on the side of the OC remote from the second substrate 320, in the display area AA and the camera area S of the TFT-LCD 1.

As for the liquid crystal layer 33, illustratively, as shown in fig. 5, the liquid crystal layer 33 is disposed between the array substrate 31 and the counter substrate 32, and the liquid crystal of the liquid crystal layer 33 fills the entire display area AA and the camera area S of the TFT-LCD 1.

The light transmittance of such materials as liquid crystals is generally 70% to 80%.

As for the conductive layer 37, illustratively, as shown in fig. 5, the conductive layer 37 is provided on the surface of the second substrate 320 remote from the liquid crystal layer 33, and the conductive layer 37 is located in the display area AA and the camera area S of the TFT-LCD 1.

In some embodiments, the material of the conductive layer 37 may be Indium Tin Oxide (ITO), which has a light transmittance of about 80%.

The conductive layer 37 is used to shield the external electric field and prevent the external electric field from affecting the liquid crystal deflection.

As for the support layer 38, for example, as shown in fig. 5, the support layer 38 may also be referred to as a spacer, the support layer 38 is disposed between the array substrate 31 and the opposite substrate 32, and both ends of the support layer 38 are in contact with the lower alignment film 313 and the upper alignment film 323, respectively. The support layer 38 is located in the display area AA of the TFT-LCD 1.

In some embodiments, the material of the support layer 38 is a resin, and the light transmittance of the material can reach more than 90%.

In some embodiments, as shown in fig. 5, the support layer 38 may be located below the BM and above the TFT, i.e., the orthographic projection of the support layer 38 on the first substrate 310, the orthographic projection of the BM on the first substrate 310, and the orthographic projection of the conductive layer in the TFT on the first substrate 310 overlap. Illustratively, the orthographic projection of the support layer 38 on the first substrate 310 and the orthographic projection of the conductive layer in the TFT on the first substrate 310 are within the orthographic projection of the BM on the first substrate 310. In this way, the support layer 38 and the conductive layer in the TFT can be prevented from blocking light in regions other than BM, so that light transmittance of the TFT-LCD1 can be ensured.

The support layer 38 supports the TFT-LCD1, and reduces the degree of elastic deformation of the array substrate 31 and the counter substrate 32 of the TFT-LCD 1. It can also be said that the support layer 38 serves to maintain the cell thickness of the liquid crystal cell uniform. Based on this, the number of the support layers 38 in the TFT-LCD1 is not limited, and may be set as appropriate as needed.

Regarding the lower polarization layer 35, for example, as shown in fig. 5, the lower polarization layer 35 is disposed on the surface of the array substrate 31 away from the liquid crystal layer 33, and the lower polarization layer 35 is located in the display area AA of the TFT-LCD 1. It will also be appreciated that the lower polarizing layer 35 is provided with through holes in the camera area S of the TFT-LCD1 which allow it to escape completely from the camera area S, avoiding the lower polarizing layer 35 from blocking light entering the camera area S.

With respect to the upper polarizing layer 36, as shown in fig. 5, for example, the upper polarizing layer 36 is disposed on the surface of the opposite substrate 32 remote from the liquid crystal layer 33, and the upper polarizing layer 36 is disposed in the display area AA of the TFT-LCD 1. It will also be appreciated that the upper polarizing layer 36 is provided with through holes in the camera area S of the TFT-LCD1 which allow the through holes to completely escape the camera area S, avoiding the upper polarizing layer 36 from blocking light entering the camera area S.

However, with the development of display technology, the user' S requirements for the quality of pictures taken by the camera in the display device 1000 are higher and higher, and the light transmittance of the camera area S is crucial to the quality of pictures taken by the camera. The high light transmittance of the camera area S is beneficial to the shooting of the camera. As can be seen from the above description, the liquid crystal in the liquid crystal layer 33 fills the entire display area AA and camera area S of the TFT-LCD 1. And the liquid crystal can have certain sheltering from to the light that gets into in the camera district S, and the light transmissivity of liquid crystal is generally 70% -80% to make the light transmissivity of camera district S have certain reduction, be unfavorable for the shooting of camera.

Example two

Example two differs from example one in that the TFT-LCD1 further includes a light-transmitting portion.

As shown in fig. 6, the TFT-LCD1 includes an array substrate 31, a counter substrate 32, a liquid crystal 33, a lower polarizing layer 35, an upper polarizing layer 36, a conductive layer 37, a support layer 38, and a light-transmitting portion 39.

The array substrate 31, the opposite substrate 32, the liquid crystal layer 33, the lower polarization layer 35, the upper polarization layer 36, the conductive layer 37, and the supporting layer 38 are the same as those in the first example, and reference may be made to the related description in the first example, which is not repeated herein.

As shown in fig. 6, the light-transmitting portion 39 is provided between the array substrate 31 and the counter substrate 32, and the light-transmitting portion 39 is located in the camera area S. The liquid crystal layer 33 is distributed around the light-transmitting portion 39.

It is also understood that the light-transmitting portion 39 is provided in the camera area S of the TFT-LCD1 for discharging the liquid crystal of the liquid crystal layer 33 of the camera area S.

In some embodiments, the light-transmitting portion 39 is made of the same material as the support layer 38, that is, the light-transmitting portion 39 may be made of resin, and thus the light transmittance of the light-transmitting portion 39 may be 90% or more. Thus, the liquid crystal having low light transmittance is discharged from the light-transmitting portion 39 having high light transmittance in the camera area S of the TFT-LCD1, so that the light transmittance of the camera area S of the TFT-LCD1 can be increased, which is beneficial for the image pickup by the camera.

In some embodiments, as shown in fig. 6, the outline of the orthographic projection of the light-transmitting portion 39 on the array substrate 31 is the same as the outline of the camera area S. Thus, the light-transmitting portion 39 has the largest volume, and can discharge the liquid crystal having the largest volume, thereby improving the light transmittance of the camera area S to a greater extent.

In some embodiments provided in the present application, the light-transmitting portion 39 is a lens structure, and a gap is formed between the light-transmitting portion 39 and the array substrate 31, and the light-transmitting portion is in contact with the opposite substrate 32.

As shown in fig. 6, the surface of the light-transmitting portion 39 close to the array substrate 31 is convex. A gap is formed between the surface of the light-transmitting portion 39 close to the array substrate 31 and the surface of the array substrate 31 close to the liquid crystal layer 33, and the surface of the light-transmitting portion 39 close to the counter substrate 32 is in contact with the surface of the counter substrate 32 close to the liquid crystal layer 33, and there is no gap.

In some embodiments, the BM, the color filter layer 321, the OC, and the upper alignment film 323 are first sequentially formed on the second substrate 320 to obtain the opposite substrate 32. Then, on the counter substrate 32, the support layer 38 and the light-transmitting portion 39 are prepared by a patterning process (including, for example, steps of glue application, exposure, development, etching, and the like). Next, TFTs, a pixel electrode layer 311, a common electrode layer 322, a passivation layer 312, and a lower alignment film 313 are formed on the first substrate 310, thereby obtaining the array substrate 31. Finally, the counter substrate 32 and the array substrate 31 are vacuum bonded to obtain a liquid crystal cell.

The mask used in the composition process may be, for example, a half-tone mask (halftone slit mask), the half-tone mask includes a half-tone layer having a certain light transmittance, and light passing through the half-tone layer is attenuated and only part of the light passes through the half-tone layer, so that the photoresist is partially exposed, and the purpose of controlling the thickness of the exposed photoresist is achieved. Finally, the light-transmitting portion 39 having a convex surface can be prepared.

Therefore, the surface of the light-transmitting portion 39 close to the array substrate 31 is convex, so that the light-transmitting portion 39 can play a role of converging light, which is beneficial to reducing light loss, thereby improving light utilization rate and also improving light transmittance of the camera area S.

Illustratively, as shown in fig. 7, the light-transmitting portion 39 includes a fresnel lens structure. As shown in fig. 8A and 8B, the surface of the light-transmitting portion 39 close to the array substrate 31 has a plurality of insections, and the insections form a plurality of concentric circles on the surface of the light-transmitting portion 39.

In some embodiments, a halftone mask may be used to prepare the fresnel lens structure in the light-transmitting portion 39.

As shown in fig. 7, the external light passes through the transparent portion 39 (lens structure) from the counter substrate 32 side, and then passes through the array substrate 31 to enter the camera.

It should be noted that, a backlight module 2 is further disposed between the camera and the TFT-LCD1, and the backlight module 2 is provided with a through hole in the corresponding camera area S, so that light can directly pass through the through hole.

The thickness difference between the middle and the edge of the common lens is large due to the thick middle and the thin periphery of the common lens, and after light passes through the common lens, the phenomena of darkening of corners and blurring of local areas can occur. However, in the light transmitting portion 39 having the fresnel lens structure, when light enters the camera area S, refraction occurs in the lens edge area. Because of fresnel lens has the insection 391 of a plurality of equidistance for light along the rectilinear propagation is filtered in fresnel lens, only keeps the light of taking place refracting curved surface department, and light passes lens entering camera, makes camera received light luminance everywhere unanimously, is favorable to having realized high-quality imaging.

In other embodiments provided herein, the light-transmitting portion 39 is a pillar structure.

Regarding the material of the light-transmitting portion 39 having the pillar structure, in some embodiments, the material of the light-transmitting portion 39 may be an organic film or a photolithographic material, and the light transmittance of the organic film and the photolithographic material is generally higher than that of the liquid crystal 33.

Alternatively, in other embodiments, the material of the light-transmitting portion 39 is the same as that of the support layer 38, and may be, for example, a resin, and the light transmittance of the resin may be 90% or more.

As shown in fig. 9A and 9B, fig. 9B is a perspective view of light-transmitting portion 39 in fig. 9A, light-transmitting portion 39 has a solid pillar structure, and both ends of light-transmitting portion 39 are in contact with array substrate 31 and counter substrate 32, respectively.

Thus, there is no gap between light-transmitting portion 39 and array substrate 31, and no liquid crystal is present between light-transmitting portion 39 and array substrate 31. It can also be understood that the light-transmitting portion 39 can drain all liquid crystal in the camera area S, and can greatly improve the light transmittance of the camera area S, thereby facilitating the shooting of the camera. In addition, the two ends of the light-transmitting part 39 are respectively contacted with the array substrate 31 and the opposite substrate 32, so that the light-transmitting part 39 can better support the TFT-LCD1, and the problem of yellowing of the periphery of the display panel caused by the change of the cell thickness of a liquid crystal cell in a camera area is avoided.

As shown in fig. 10A and 10B, fig. 10B is a perspective view of the light-transmitting portion 39 in fig. 10A, the light-transmitting portion 39 has a hollow pillar structure, and both ends of the light-transmitting portion 39 are in contact with the array substrate 31 and the counter substrate 32, respectively.

Thus, on the one hand, there is no gap between the light-transmitting portion 39 and the array substrate 31, and the light-transmitting portion 39 can drain all the liquid crystals 33 in the camera area S, and the light transmittance of the camera area S can be improved. On the other hand, the light transmission part 39 is a hollow structure, the hollow part of the light transmission part 39 has no any shielding to light, and the light transmission rate is high and can be nearly 100%. Thus, the shooting of the camera is facilitated.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (11)

1. A display panel provided with a display area and a camera area, characterized in that the display panel comprises:

an array substrate;

the opposite substrate is arranged in an opposite mode with the array substrate;

a liquid crystal layer disposed between the array substrate and the opposite substrate;

a light-transmitting portion provided between the array substrate and the counter substrate and located in the camera area; the liquid crystal layer is distributed on the periphery of the light transmission part.

2. The display panel according to claim 1, wherein the light-transmitting portion is a lens structure.

3. The display panel according to claim 2, wherein a surface of the light-transmitting portion adjacent to the array substrate is convex.

4. The display panel of claim 2, wherein the light-transmissive portion comprises a fresnel lens structure, and wherein a surface of the light-transmissive portion adjacent to the array substrate has a plurality of insections that form a plurality of concentric circles on the surface of the light-transmissive portion.

5. The display panel according to claim 3 or 4, wherein the light-transmitting portion is in contact with the counter substrate with a gap therebetween.

6. The display panel according to claim 1, wherein the light-transmitting portion is a solid pillar structure or a hollow pillar structure.

7. The display panel according to claim 6, wherein the light-transmitting portion is in contact with the array substrate and the counter substrate, respectively.

8. The display panel according to any one of claims 1 to 4, 6, or 7, wherein an outline of an orthogonal projection of the light-transmitting portion on the array substrate is the same as an outline of the camera area.

9. The display panel according to any one of claims 1 to 4 or 6 or 7, wherein the display panel further comprises a support layer disposed between the array substrate and the counter substrate; the supporting layer is positioned in the effective display area and outside the camera area;

the light-transmitting part is made of the same material as the support layer.

10. The display panel according to claim 6 or 7, wherein the material of the light-transmitting portion is an organic film or a photolithographic material.

11. A display device comprising a display panel according to any one of claims 1 to 10 and a camera positioned on a backlight side of the display panel, the camera being positioned below the camera area.

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