WO2020191901A1

WO2020191901A1 - Display panel and display device

Info

Publication number: WO2020191901A1
Application number: PCT/CN2019/087278
Authority: WO
Inventors: 应俊
Original assignee: 武汉华星光电半导体显示技术有限公司
Priority date: 2019-03-26
Filing date: 2019-05-16
Publication date: 2020-10-01
Also published as: CN110034165A

Abstract

The present invention provides a display panel. The display panel comprises a main display panel and a secondary display panel, wherein the main display panel comprises a display area and a functional area; the secondary display panel is located below the main display panel and can switch between a first position and a second position. A camera module is hidden below a screen; a driving member drives the secondary display panel to move; when the camera module is closed, the driving member drives the secondary display panel to move to the functional area, so that the secondary display panel and the main display panel form a whole; when the camera module is opened, the driving member drives the secondary display panel to leave the functional area, and at this moment, outside light can smoothly enter a lens of the camera module without shielding by a metal film layer in the secondary display panel, so that the transmittance is improved, and the use effect of the lens is optimized. In this configuration mode, on one hand, the screen-to-body ratio of the screen is improved, and on the other hand, the anti-falling performance of a mobile phone is further improved without an external mechanical structure.

Description

Display panel and display device

Technical field

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

Background technique

The technological development of mobile terminals such as mobile phones is changing with each passing day. Indicators such as mobile phone screen size, screen-to-body ratio, and resolution affect user experience. Among them, screen-to-body ratio directly affects the beauty and experience of mobile phones, and is also the goal of various businesses to improve.

In order to increase the screen-to-body ratio, the current existing technologies are represented by notch and water drop screens, which gradually occupy the mainstream of the market. Although the screen-to-body ratio is increased to a certain extent, special-shaped cutting technology is required, which not only affects the appearance, but also Cannot avoid the front camera. Another technology is the lifting screen. Although the lifting screen does not need to be cut in a special shape, and the front display area can be expanded, it needs to add a lifting system externally, and the mechanical properties of the mobile phone such as falling resistance are weakened.

At present, there are voices with higher screen-to-body ratio on the market. Although there are no real mass products on the market, they are already in development. The development idea is to dig holes on the screen, place the front camera, and hide the camera module in the panel. There are multiple metal traces on the OLED panel. With the increase of PPI, the density of metal traces increases. Light cannot reach the camera lens through a large amount of metal traces.

Therefore, it is indeed necessary to develop a new type of display panel to overcome the defects of the prior art.

technical problem

An object of the present invention is to provide a display panel that can solve the problems of unsightly appearance of mobile phones, weakened anti-fall mechanical performance, and low light transmittance of panel stacking caused by improving the screen-to-body ratio in the prior art.

Technical solutions

To achieve the above objective, the present invention provides a display panel including a main display panel and a sub display panel, wherein the main display panel includes a display area and a function area; the sub display panel is located under the main display panel and can be Switch position between the first position and the second position; wherein, when the auxiliary display panel is in the first position, the auxiliary display panel is located below the functional area of the main display panel, and the auxiliary display panel corresponds to It is arranged at the position of the functional area of the main display panel, and when the auxiliary display panel is in the second position, the auxiliary display panel is located below the display area of the main display panel.

Further, in other implementation manners, electronic components are provided at a position corresponding to the functional area under the main display panel.

Further, in other embodiments, the electronic component includes a camera module or a light sensor unit.

Further, in other implementation manners, wherein the functional area on the main display panel includes two or more, and the display area separates the functional areas.

Further, in other embodiments, the electronic component is correspondingly disposed under each of the functional areas in the display area.

Further, in other embodiments, in the display area, the main display panel includes a first substrate layer, a thin film transistor layer, a light-emitting layer, an encapsulation layer, and a polarizer arranged in sequence; in the functional area, the The main display panel includes a second substrate layer and the encapsulation layer arranged in sequence.

Further, in other embodiments, the thickness of the second substrate layer is 20% to 80% of the thickness of the first substrate layer, preferably the thickness of the second substrate layer is the thickness of the first substrate layer 40% of it. In other embodiments, the thickness of the second substrate layer can be determined as needed, and is not limited, as long as the thickness of the second substrate layer can be ensured to be less than the thickness of the first substrate layer.

Another object of the present invention is to provide a display device, which includes a body on which the display panel related to the present invention is arranged, wherein a driving member is further provided on the body, and the driving member and the auxiliary The display panel is connected and can drive the secondary display panel to switch positions between the first position and the second position.

Further, in other embodiments, the driving member drives the auxiliary display panel to switch positions between the first position and the second position by contracting.

Further, in other embodiments, wherein the main body is further provided with a main board, the main board is connected to the main display panel and the auxiliary display panel, and the main display panel and the main display panel can be controlled by controlling the main board. The display effect of the two screens on the secondary display panel.

When the camera module is closed, the driving member drives the auxiliary display panel to be located at the first position. At this time, the display area of the auxiliary display panel can fill the position of the functional area of the main display panel, and is compatible with The display areas of the main display panel are combined to realize a complete display of the surface of the main display panel; when the camera module is turned on, the driving member drives the auxiliary display panel to be located at the second position, and at this time The functional area is not blocked by the metal film layer in the secondary display panel, and external light can smoothly enter the lens of the camera module, thereby increasing the transmittance and optimizing the use effect of the lens.

Beneficial effect

Compared with the prior art, the beneficial effect of the present invention is to provide a display panel and a display device. The display panel includes a main display panel and a sub display panel. The camera module is hidden under the screen, and the sub display panel is driven to move through the drive. When the camera module is closed, the driver drives the sub-display panel to move to the functional area, so that it is integrated with the main display panel; when the camera module is opened, the driver drives the sub-display panel to leave the functional area, and there is no sub-display panel at this time The metal film layer in the occlusion, the external light can smoothly enter the lens of the camera module, thereby increasing the transmittance and optimizing the use of the lens. This setting method increases the screen ratio of the screen on the one hand, and there is no external machinery on the other hand. The structure further improves the anti-drop performance of the mobile phone.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

1 is a schematic top view of a display panel provided by Embodiment 1 of the present invention;

2 is a schematic cross-sectional view of the display device when the secondary display panel is in the first position according to Embodiment 1 of the present invention;

3 is a schematic cross-sectional view of the display device when the secondary display panel is in the second position according to Embodiment 1 of the present invention;

4 is a schematic cross-sectional view of the display device when the secondary display panel is in the first position according to Embodiment 2 of the present invention;

5 is a schematic cross-sectional view of the display device when the secondary display panel is in the second position according to Embodiment 2 of the present invention;

6 is a schematic top view of a display panel provided by Embodiment 3 of the present invention.

The best mode of the invention

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

The specific structure and functional details disclosed herein are only representative, and are used for the purpose of describing exemplary embodiments of the present invention. However, the present invention can be implemented in many alternative forms, and should not be construed as being limited only to the embodiments set forth herein.

In the description of the present invention, it should be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply the pointed device Or the element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the characteristics defined by "first" and "second" may explicitly or implicitly include one or more of these characteristics. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In addition, the term "including" and any variations thereof is intended to cover non-exclusive inclusion.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood in specific situations.

Example 1

Please refer to FIG. 1. FIG. 1 shows a schematic top view of the display panel provided by this embodiment. The present invention provides a display panel including a main display panel 1, a sub display panel 2 and a camera module 3, and a sub display panel 2 The camera module 3 is arranged under the main display panel 1 and can be switched between a first position and a second position. The camera module 3 is arranged under the auxiliary display panel 2.

Referring to FIG. 2, the present invention also provides a display device, which includes a body on which the display panel of the present invention is arranged. The main display panel 1 includes a function area 4 and a display area 5, wherein the body is also provided with The driving member 6 is connected to the auxiliary display panel 2 and can drive the auxiliary display panel 2 to switch positions between the first position and the second position by shrinking.

2 shows a schematic cross-sectional view of the display device when the secondary display panel is in the first position according to this embodiment. When the secondary display panel 2 is in the first position, it is located under the functional area of the main display panel 1 and the camera module Above 3, the secondary display panel 2 can fill the position of the functional area 4 of the main display panel 1, and combine with the display area 4 of the main display panel 1 to achieve a complete display of the surface of the main display panel 1; Figure 3 is this embodiment Provided is a schematic cross-sectional view of the display device when the secondary display panel is in the second position. When the secondary display panel 2 is in the second position, it is located below the display area 5 of the primary display panel 1, so that the camera module 3 can receive external light .

When the camera module 3 is closed, the driver 6 drives the auxiliary display panel 2 to be located in the first position. At this time, the auxiliary display panel 2 can fill the position of the functional area 4 of the main display panel 1 and combine with the display area 5 of the main display panel 1 Together to achieve a complete display of the surface of the main display panel 1; when the camera module 3 is opened, the driver 6 drives the auxiliary display panel 2 to be in the second position, and the functional area 4 is not blocked by the metal film layer in the auxiliary display panel 2 , The external light can smoothly enter the lens of the camera module 3, thereby increasing the transmittance and optimizing the use effect of the lens.

In the display area 5, the main display panel 1 includes a first substrate layer 11, a thin film transistor layer 12, a light-emitting layer 13, an encapsulation layer 14 and a polarizer 15, which are sequentially arranged. A substrate layer 11 and an encapsulation layer 14.

The first substrate layer 11 can be polyimide (PI), polycarbonate (PC), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), etc. In the embodiment, the PI film layer, that is, polyimide film, is used as the base of the display panel; the polyimide film is the best-performing film-type insulating material in the world. It has strong tensile strength and is composed of Tetracarboxylic dianhydride and diaminodiphenyl ether are polycondensed and cast into a film in a strong polar solvent and then imidized.

The thin film transistor layer 12 includes a buffer layer, an insulating layer, a semiconductor layer, a first gate insulating layer, a first metal layer, a second gate insulating layer, a second metal layer, an interlayer insulating layer, and a third metal layer sequentially arranged . The buffer layer and the insulating layer can prevent some metal ions in the first substrate layer 11 from introducing impurities in the subsequent high-temperature manufacturing process, which may affect the product;

The first metal layer forms a first gate, the second metal layer forms a second gate, and the third metal layer forms a signal line. The materials of the first metal layer, the second metal layer and the third metal layer include, but are not limited to, one or more of metal materials such as Al, Mo, Cu, Ag, Cr, Ti, TiAlTi, and MoTi.

In this embodiment, the material of the first gate insulating layer and the second gate insulating layer is silicon nitride, and silicon oxide, silicon oxynitride, etc. can also be used, which can be determined as required and is not limited.

The light-emitting layer 13 includes a pixel definition layer and an RGB layer. The encapsulation layer 14 includes a first inorganic encapsulation layer, a first organic encapsulation layer, and a second inorganic encapsulation layer arranged in sequence. Since the G and RGB luminescent materials are very sensitive to water vapor and oxygen, It needs to be packaged and protected, and the protection area is expanded to functional area 5 to form an integrated effect to ensure the package effect. Since both the inorganic packaging material and the organic packaging material are transparent materials, they have almost no effect on the transmittance of the imaging area 4 under the screen.

The main body of the display device is also provided with a main board, which is connected to the main display panel 1 and the auxiliary display panel 2, and the display effects of the main display panel 1 and the auxiliary display panel 2 can be controlled by controlling the main board.

The structure of the secondary display panel 2 is similar to the structure of the main display panel 1, and will not be repeated here.

Example 2

The structure of the display device in this embodiment is roughly the same as that of Embodiment 1. For the same structure, please refer to the above-mentioned manner, which will not be repeated here. The main difference is that in the functional area 4, the main display panel 1 includes The second substrate layer 112 and the encapsulation layer 14. The thickness of the second substrate layer 112 is 20% to 80% of the thickness of the first substrate layer 11. In this embodiment, the thickness of the second substrate layer 112 is preferably 40% of the thickness of the first substrate layer 11. By etching off a part of the substrate layer, the thickness of the substrate layer is reduced to increase the transmittance and enhance the effect of taking pictures under the screen.

In other embodiments, the thickness of the second substrate layer can be determined as needed and is not limited, as long as the thickness of the second substrate layer can be ensured to be smaller than the thickness of the first substrate layer.

Please refer to FIGS. 4 and 5. FIG. 4 shows a schematic cross-sectional view of the display device when the auxiliary display panel is in the first position provided by this embodiment. When the auxiliary display panel 2 is in the first position, it is in the main display panel Below the functional area of 1 and above the camera module 3. At the same time, the secondary display panel 2 can fill the position of the functional area 4 of the main display panel 1, and combine with the display area 4 of the main display panel 1 to achieve a complete surface of the main display panel 1. Figure 5 is a schematic cross-sectional view of the display device when the secondary display panel is in the second position provided by this embodiment. When the secondary display panel 2 is in the second position, it is located below the display area 5 of the primary display panel 1. So that the camera module 3 can receive external light.

Example 3

Please refer to FIG. 6. FIG. 6 is a schematic top view of the display panel provided in this embodiment. The structure of the display panel in this embodiment is substantially the same as that in Embodiment 1. For the same structure, refer to the above-mentioned manner, which will not be repeated here. The main difference is that there are two functional areas defined on the surface of the main display panel. The display area separates the two functional areas. Two sub-display panels 2 and two camera modules 3 are provided under the two functional areas. , The two camera modules 3 are arranged side by side, and the position of the functional area is not limited to the upper left corner of the screen.

In other embodiments, the number and location of the functional areas can be determined as needed and are not limited. The number of secondary display panels and camera modules can also be set as needed and is not limited.

The beneficial effect of the present invention is to provide a display panel and a display device. The camera module is hidden under the screen, and the auxiliary display panel is driven by the driver to move. When the camera module is closed, the driver drives the auxiliary display panel to move to the functional area. , It is integrated with the main display panel; when the camera module is opened, the driver drives the auxiliary display panel to leave the functional area. At this time, there is no shielding by the metal film in the auxiliary display panel, and external light can smoothly enter the camera module. The lens, thereby improving the transmittance and optimizing the use of the lens, on the one hand, this setting method increases the screen-to-body ratio of the screen, on the other hand, there is no external mechanical structure, which further improves the anti-drop performance of the mobile phone.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered This is the protection scope of the present invention.

Claims

A display panel, including a main display panel and a sub display panel, wherein the main display panel includes a display area and a functional area; the sub display panel is located under the main display panel and can be positioned at a first position and a second position Position conversion position; wherein, when the auxiliary display panel is in the first position, the auxiliary display panel is located below the functional area of the main display panel, and the auxiliary display panel is correspondingly arranged on the main display The position of the panel function area, when the auxiliary display panel is in the second position, the auxiliary display panel is located below the display area of the main display panel.
The display panel according to claim 1, wherein an electronic component is provided at a position corresponding to the functional area under the main display panel.
3. The display panel according to claim 2, wherein the electronic component comprises a camera module or a light sensor unit.
The display panel according to claim 1, wherein the functional area on the main display panel includes two or more, and the display area separates the functional areas.
4. The display panel of claim 4, wherein the electronic component is correspondingly disposed under each of the functional areas.
The display panel according to claim 1, wherein, in the display area, the main display panel includes a first substrate layer, a thin film transistor layer, a light-emitting layer, an encapsulation layer, and a polarizer arranged in sequence; in the functional area The main display panel includes a second substrate layer and the encapsulation layer arranged in sequence.
7. The display panel of claim 6, wherein the thickness of the second substrate layer is 20% to 80% of the thickness of the first substrate layer.
A display device comprising a main body, wherein the display panel according to claim 1 is arranged on the main body, wherein a driving member is further arranged on the main body, and the driving member is connected with the auxiliary display panel, and The secondary display panel can be driven to switch positions between the first position and the second position.
8. The display device according to claim 8, wherein the driving member drives the auxiliary display panel to switch positions between the first position and the second position by contracting.
The display device according to claim 8, wherein the main body is further provided with a main board, the main board is connected to the main display panel and the auxiliary display panel, and the main display panel and the main display panel can be controlled by controlling the main board. The display effect of the two screens of the secondary display panel.
8. The display device according to claim 8, wherein an electronic component is provided at a position corresponding to the functional area under the main display panel.
11. The display device of claim 11, wherein the electronic component comprises a camera module or a light sensor unit.
8. The display device according to claim 8, wherein the functional area on the main display panel includes two or more, and the display area separates the functional areas.
The display device according to claim 13, wherein the electronic components are correspondingly disposed under each of the functional areas.
8. The display device according to claim 8, wherein, in the display area, the main display panel includes a first substrate layer, a thin film transistor layer, a light-emitting layer, an encapsulation layer, and a polarizer arranged in sequence; in the functional area The main display panel includes a second substrate layer and the encapsulation layer arranged in sequence.
15. The display device according to claim 15, wherein the thickness of the second substrate layer is 20% to 80% of the thickness of the first substrate layer.