CN110518045B

CN110518045B - Display panel

Info

Publication number: CN110518045B
Application number: CN201910813646.4A
Authority: CN
Inventors: 张福阳
Original assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2022-02-22
Anticipated expiration: 2039-08-30
Also published as: CN110518045A

Abstract

The invention discloses a display panel, which comprises a camera shooting area, a display sub-area surrounding the camera shooting area and a substrate; the thin film transistor layer is arranged on the substrate; the organic light-emitting layer is arranged on the thin film transistor layer; and the groove is arranged in the image pickup area, penetrates through the thin film transistor layer and the organic light emitting layer and extends to the inside of the substrate. The display panel has the advantages that the groove is formed in the image pickup area and filled with the light-transmitting material, light transmittance of light is improved, image pickup precision is improved, the groove is of a structure with a wide upper part and a narrow lower part, manufacturing of the groove and subsequent filling of fillers are facilitated, and meanwhile, the structure with the wide upper part and the narrow lower part is also beneficial to packaging of the groove.

Description

Display panel

Technical Field

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

Background

At the present stage, the development of display technologies is changing day by day, and the appearance of various screen technologies provides infinite possibilities for electronic terminals. Particularly, with the rapid application of display technologies represented by OLEDs (organic light emitting diodes), various mobile terminals that use "full screen", "special screen", "sound production under screen", "fingerprint under screen", and the like as selling points are beginning to be rapidly popularized.

The full screen technology is a wider definition of ultra-high screen than the design of mobile phones in the display industry. The explanation is that the front of the mobile phone is a screen, the display interface of the mobile phone is completely covered by the screen, and the four frame positions of the mobile phone are designed without frames, so that the ultrahigh screen occupation ratio close to 100% is pursued. However, the mobile phone is limited by indispensable basic functional requirements of other mobile phones such as a front camera of the mobile phone, a mobile phone receiver, a distance sensor and a light sensor, and at present, a certain gap is required to be reserved above a mobile phone screen to place the functional components, so that the mobile phone with a full screen declared in the industry is only a mobile phone with an ultrahigh screen ratio temporarily, and a mobile phone with a front screen accounting for 100% of the mobile phone front screen, namely a "bang screen", is not provided. By adding an ultra-narrow frame design, the real screen occupation ratio (unofficial publicity) can reach about 80-90%, and a certain distance is left from a 100% overall screen.

In the past, the real full-screen call is higher and higher, and from the perspective of display technology, one of the main difficulties is to balance the contradiction between the front camera and the display panel, namely to realize the front camera of the device while not damaging the integrity of the panel. The option is to place the camera below the panel. As for the flexible display panel, since the visible light transmittance of the flexible substrate adopted in large scale at the present stage is generally low, the external visible light is difficult to enter the camera unit for imaging when the camera is placed below the panel.

Disclosure of Invention

In order to solve the above problems, the present invention provides a display panel, which is used to solve the technical problems in the prior art that the visible light transmittance of a flexible substrate is low, and when a camera is placed below the panel, external visible light is difficult to enter a camera unit for imaging.

The technical scheme for solving the problems is as follows: the invention provides a display panel, which comprises a camera shooting area, a display sub-area surrounding the camera shooting area and a substrate; the thin film transistor layer is arranged on the substrate; the organic light-emitting layer is arranged on the thin film transistor layer; and the groove is arranged in the image pickup area, penetrates through the thin film transistor layer and the organic light emitting layer and extends to the inside of the substrate.

Furthermore, the display panel further comprises a packaging layer, the organic light emitting layer is arranged on one side far away from the thin film transistor layer, and the packaging layer covers the opening of the groove.

Further, the groove is filled with a light-transmitting material, and the light-transmitting material includes at least one of a transparent resin material, a polyimide material, a flexible resin material, and an inorganic material.

Further, the groove comprises a first opening surface which is flush with one side, close to the organic light emitting layer, of the packaging layer; the first bottom surface is arranged in the substrate, wherein the projection of the first bottom surface on the substrate completely falls into the projection of the first opening surface on the substrate.

Further, the groove further comprises a first annular circumferential surface, the first annular circumferential surface is smoothly connected with the first opening surface and the edge of the first bottom surface, the groove is surrounded by the first opening surface, the first bottom surface and the first annular circumferential surface, and the cross section of the groove in the vertical direction is in an inverted trapezoid shape.

Furthermore, the display panel further comprises a first blocking layer, which is arranged between the groove and the thin film transistor layer, between the groove and the organic light emitting layer, between the groove and the substrate, and extends to the surface of the organic light emitting layer.

Further, the groove comprises a first groove part penetrating through the organic light emitting layer and the thin film transistor layer, the first groove part comprises a second opening surface, and the second opening surface is flush with one side of the packaging layer, which is close to the organic light emitting layer; the second groove part is inwards concave in the substrate and comprises a third bottom surface which is arranged in the substrate; one side of the first groove part, which is far away from the second opening surface, and one side of the second groove part, which is far away from the second bottom surface, are intersected at one side of the thin film transistor layer, which is close to the substrate.

Further, the recess still includes that the second annular is global, the second annular is global to be connected the second opening face with the edge of third bottom surface, the second annular is global including a cylinder annular is global and an inversion round platform annular is global, wherein, the cylinder annular global with the round platform annular is global including an intersection face, the intersection face is located thin film transistor layer is close to on the annular of base plate is global.

Further, a reflective layer is attached to the second annular peripheral surface, and the material of the reflective layer includes at least one of molybdenum and tungsten.

Further, still include the second barrier layer, locate thin-film transistor layer is close to base plate one side covers the global surface of the circular face of the round platform of inversion with the surface of bottom surface.

The invention has the advantages that: according to the display panel, the groove is formed in the image pickup area and filled with the light-transmitting material, so that the light transmittance of light is improved, the image pickup precision is improved, the groove is in a structure with a wide upper part and a narrow lower part, the groove is beneficial to manufacturing the groove and filling subsequent fillers, and meanwhile, the structure with the wide upper part and the narrow lower part is also beneficial to packaging the groove.

Drawings

The invention is further explained below with reference to the figures and examples.

Fig. 1 is a plan view of a display panel in embodiment 1.

Fig. 2 is a schematic view of a display panel in embodiment 1.

Fig. 3 is a schematic view of a display panel in embodiment 2.

10 a display panel; 101 a display sub-region;

102 a camera shooting area; a 110 substrate;

120 a thin film transistor layer; 130 an organic light emitting layer;

140 a first barrier layer; 150 a first encapsulation layer;

141 a second barrier layer; 151 a second encapsulation layer;

1021 a first groove; 1022 a second recess;

10211 a first open face; 10212 a first bottom surface;

10213 a first annular peripheral surface; 102201 a first groove portion;

102202 a second groove portion; 10221 a second open face;

10222 a second bottom surface; 10223 third open face;

10224 third bottom surface; 102251 a cylindrical annular periphery;

102201 a first groove portion; 102202 a second groove portion;

160 a light-reflecting layer; 10211 a light transmissive material;

102252 inverting the circular periphery of the circular truncated cone;

Detailed Description

The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. The directional terms used in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., refer to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.

Example 1

As shown in fig. 1, in the present embodiment, the display panel 10 of the present invention includes a display sub-area 101 and an image pickup area 102.

As shown in fig. 2, the display panel 10 further includes a substrate 110, a thin-film transistor layer 120, an organic light emitting layer 130, a first barrier layer 140, and a first encapsulation layer 150.

The substrate 110 is a flexible substrate made of polyimide or other similar flexible resin materials or a combination of flexible resin materials and inorganic materials, and the substrate 110 is made of a light-transmitting material, so that light can be received through the substrate 110.

The thin-film transistor layer 120 is disposed on the substrate 110, and a plurality of circuit structures are disposed on the thin-film transistor layer 120 and used for providing electric energy displayed by the display panel 10.

The organic light emitting layer 130 is disposed on the thin film transistor layer 120 and generally comprises a plurality of regularly arranged pixel units, wherein each pixel unit comprises a red pixel unit, a green pixel unit and a blue pixel unit, and different pixel units can emit red, green, blue, white and other colors of light, so that the display panel 10 can emit bright-colored pictures.

In this embodiment, the image pickup area 102 in the display panel 10 of the invention is a display area, and in order to facilitate lighting of the image pickup area 102, a first groove 1021 is formed at a position of the thin film transistor layer 120 and the organic light emitting layer 130 corresponding to the image pickup area 102, where the first groove 1021 penetrates through the thin film transistor layer 120 and the organic light emitting layer 130 and is recessed in the substrate 110, specifically, the first groove 1021 includes a first open surface 10211 flush with a side of the first encapsulation layer 150 close to the organic light emitting layer 130 and a first bottom surface 10212 arranged inside the substrate 110, a projection of the first bottom surface 10212 on the substrate 110 completely falls into a projection of the first open surface 10211 on the substrate 110, the first groove 1021 further includes a first annular peripheral surface 10213, and the first annular peripheral surface 10213 smoothly connects an edge of the first open surface 10211 and the first bottom surface 10212, first open face 10211, first bottom surface 10212 with first annular global 10213 encloses into the recess, the cross-section of recess on vertical direction is for invering the trapezoidally, first recess 1021 adopts "the trapezoidally design of falling of narrow down wide, is not only favorable to the processing of first recess 1021, also is convenient for subsequent printing opacity material 10211 to fill first recess 1021.

The light-transmitting material 10211 is at least one of a combination of a transparent resin material, a polyimide material, a flexible resin material and an inorganic material, and is mainly used for filling the first groove 1021 to prevent the first groove 1021 from falling into foreign matters during use, and simultaneously prevent the first groove 1021 from deforming and collapsing.

In order to protect the first groove 1021 from water and oxygen, in this embodiment, a first blocking layer 140 is disposed on the first groove 1021, the first blocking layer 140 is disposed on the organic light emitting layer 130 and covers an outer wall of the first groove 1021, and the first blocking layer 140 is made of one or a combination of several films such as silicon oxide, silicon nitride, silicon oxynitride, and amorphous silicon.

In this embodiment, the first encapsulation layer 150 is disposed on one side of the organic light emitting layer 130 away from the thin film transistor layer 120, and covers the opening of the first recess 1021, so as to prevent the intrusion of impurities or water and oxygen, and the first encapsulation layer 150 is made of one or a combination of several films such as silicon oxide, silicon nitride, silicon oxynitride, and amorphous silicon.

Example 2

In this embodiment, the display panel 10 of the present invention includes a display sub-area 101 and an imaging area 102.

As shown in fig. 3, the display panel 10 further includes a substrate 110, a thin-film transistor layer 120, an organic light emitting layer 130, a second barrier layer 141, and a second encapsulation layer 151.

In this embodiment, the image capturing area 102 in the display panel 10 of the invention is a display area, and in order to facilitate lighting of the image capturing area 102, a second groove 1022 is formed at a position of the thin-film transistor layer 120 and the organic light emitting layer 130 corresponding to the image capturing area 102, the second groove 1022 penetrates through the thin-film transistor layer 120 and the organic light emitting layer 130 and is recessed in the substrate 110, and the shape and size of the opening are consistent with the shape and size of the image capturing area 102.

Specifically, the second groove 1022 includes a first groove portion 102201 and a second groove portion 102202, wherein the first groove portion 102201 penetrates through the organic light emitting layer 130 and the thin-film transistor layer 120, the first groove portion 102201 includes a second open surface 10221 and a second bottom surface 10222, and the second open surface 10221 is flush with the side of the second encapsulation layer 151 close to the organic light emitting layer 130.

The second groove portion 102202 is recessed in the substrate 110, the second groove portion 102202 includes a third opening surface 10223 and a third bottom surface 10224, the third opening surface 10223 coincides with the second bottom surface 10222, and the third bottom surface 10224 is disposed in the substrate.

The second groove 1022 further includes a second annular peripheral surface including a cylindrical annular peripheral surface 102251 and an inverted circular truncated cone annular peripheral surface 102252, wherein the cylindrical annular peripheral surface 102251 connects the second opening surface 10221 and the second bottom surface 10222, and the inverted circular truncated cone annular peripheral surface 102252 connects the third opening surface 10223 and the third bottom surface 10224.

The first groove portion 102201 is cylindrical, so that more light rays can enter the first groove portion 102201, and the second groove portion 102202 is truncated cone-shaped, so that the processing and forming are facilitated, and the filling of materials is facilitated.

The second recess 1022 is filled with a light-transmitting material 10211, wherein the light-transmitting material 10211 is at least one of a combination of a transparent resin material, a polyimide material, a flexible resin material and an inorganic material, and is mainly used for filling the second recess 1022 to prevent impurities from falling into the second recess 1022 in the using process, and simultaneously prevent the second recess 1022 from deforming and collapsing.

The second blocking layer 141 is disposed between the substrate 110 and the thin film transistor layer 120 and covers the outer surface of the second groove portion 102202, and the second blocking layer 141 is made of one or a combination of several films such as silicon oxide, silicon nitride, silicon oxynitride, amorphous silicon, etc.

The second encapsulation layer 151 is disposed on the side of the organic light emitting layer 130 away from the thin film transistor layer 120, and covers the opening of the second recess 1022, i.e., the opening surface 10221, so as to prevent the intrusion of impurities or water and oxygen, and the second encapsulation layer 151 is made of one or a combination of several films such as silicon oxide, silicon nitride, silicon oxynitride, amorphous silicon, etc.

In order to make the light more concentrated, a light reflecting layer 160 is further disposed on the annular periphery of the second recess 1022, wherein the light reflecting layer 160 is made of a light reflecting material such as molybdenum, tungsten, or the like.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A display panel comprising a camera area and a display sub-area surrounding the camera area, characterized by further comprising

A substrate;

the thin film transistor layer is arranged on the substrate;

the organic light-emitting layer is arranged on the thin film transistor layer;

the groove is arranged in the image pickup area, penetrates through the thin film transistor layer and the organic light emitting layer and extends into the substrate;

the packaging layer is provided with one side of the organic light-emitting layer, which is far away from the thin film transistor layer, and the packaging layer covers the second opening surface of the groove;

the groove comprises

The first groove part penetrates through the organic light-emitting layer and the thin film transistor layer, the first groove part comprises a second opening surface and a second bottom surface, and the second opening surface is flush with one side, close to the organic light-emitting layer, of the packaging layer;

the second groove part is inwards concave in the substrate and comprises a third opening surface and a third bottom surface, and the third bottom surface is arranged in the substrate;

the second bottom surface and the third opening surface are overlapped and intersected at one side of the thin film transistor layer close to the substrate;

the groove further comprises a second annular circumferential surface, the second annular circumferential surface comprises a cylindrical annular circumferential surface and an inverted circular truncated cone annular circumferential surface, the cylindrical annular circumferential surface is connected with the second opening surface and the second bottom surface, and the inverted circular truncated cone annular circumferential surface is connected with the third opening surface and the third bottom surface.

2. The display panel according to claim 1,

the groove is filled with a light-transmitting material, and the light-transmitting material comprises at least one of a transparent resin material, a polyimide material, a flexible resin material and an inorganic material.

3. The display panel according to claim 1,

and a light reflecting layer is attached to the second annular peripheral surface, and the material of the light reflecting layer comprises at least one of molybdenum and tungsten.

4. The display panel according to claim 1, further comprising

The second barrier layer is arranged on the thin film transistor layer and close to one side of the substrate, and covers the outer surface of the annular periphery of the inverted round table and the outer surface of the third bottom surface.