CN214202980U

CN214202980U - Display panel and display device

Info

Publication number: CN214202980U
Application number: CN202023164851.XU
Authority: CN
Inventors: 艾经伟; 黄素丽; 贾聪聪; 林君
Original assignee: Hefei Visionox Technology Co Ltd
Current assignee: Hefei Visionox Technology Co Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-09-14
Anticipated expiration: 2030-12-24

Abstract

The utility model provides a display panel, include: the display device comprises a main display area and an auxiliary display area, wherein the auxiliary display area comprises a plurality of pixel display areas and a plurality of light-transmitting display areas which are arranged in an array manner, and the pixel display areas and the light-transmitting display areas are alternately arranged; the non-display surface side of the auxiliary display area is correspondingly provided with an imaging assembly and an optical conversion element, the light sensation element is arranged on the horizontal side of the optical conversion element, and the optical conversion element is provided with a light guide inclined plane structure corresponding to the light sensation element and used for changing the path of incident light so as to enable the light to be horizontally transmitted to the light sensation element. The light-transmitting display areas are arranged in an array mode through the auxiliary display areas, the utilization rate of light is improved, and the transmittance of the auxiliary display areas is improved. One side of the non-display surface of the secondary display area is horizontally provided with a light sensing element and a prism optical conversion piece, the path of incident light is changed, incident light is focused and enters the light sensing element, the light entering amount of the camera under the screen is increased, and the imaging effect is improved.

Description

Display panel and display device

Technical Field

The present application relates to the field of display technologies, and in particular, to a display panel and a display device.

Background

At present, display screens for electronic devices are being developed in large-screen and full-screen directions to provide users with better visual experience. Taking electronic products such as mobile phones and tablet computers as examples, because these electronic devices need to combine components such as a camera and a light sensor, and these components usually occupy the display area space of the display screen, it is not favorable to improving the screen ratio, thereby causing the display screen to be difficult to realize full screen design.

In some related embodiments, a transparent display area may be disposed on the electronic device, and the light sensing element is disposed below the transparent display area, so that the electronic device can display a full screen under the condition that the light sensing element is ensured to work normally, and therefore, the improvement of the transmittance of the transparent display area is an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a display panel for solve the not enough problem of display panel luminousness.

To achieve the above object, the present invention provides a display panel, including: the display device comprises a main display area and an auxiliary display area, wherein the auxiliary display area comprises a plurality of pixel display areas and a plurality of light-transmitting display areas which are arranged in an array manner, and the pixel display areas and the light-transmitting display areas are alternately arranged; the non-display surface side of the auxiliary display area is correspondingly provided with an imaging assembly and an optical conversion element, the light sensation element is arranged on the horizontal side of the optical conversion element, and the optical conversion element is provided with a light guide inclined plane structure corresponding to the light sensation element and used for changing the path of incident light so as to enable the light to be horizontally transmitted to the light sensation element.

Optionally, a plurality of prism structures are arrayed on the light guide slope structure.

Optionally, the prismatic structure is a prismatic pellicle formed using laser direct writing or nanoimprinting.

Optionally, the prism structure is any one or combination of a cylindrical curved surface prism structure, a triangular prism structure, a quadrangular prism structure and a pentagonal prism structure.

Optionally, the triangular prism structure is an equilateral right-angled triangle structure.

Optionally, the inclination angle of the light guide slope is 35-55 °.

Optionally, an optical focusing element is arranged between the light sensing element and the optical conversion element.

Optionally, the optical focusing element is a convex lens.

Optionally, the light emitting layer in the secondary display region is provided with a plurality of pixel units arranged in an array, and each pixel unit includes a plurality of light emitting sub-pixels in the pixel display region and a non-light emitting sub-pixel in the light transmitting display region.

The utility model also provides a display device, including above-mentioned display panel.

The utility model has the advantages that: the light-transmitting display areas are arranged in an array mode through the auxiliary display areas, the utilization rate of light is improved, and the transmittance of the auxiliary display areas is improved. One side of the non-display surface of the secondary display area is horizontally provided with a light sensing element and a prism optical conversion piece, the path of incident light is changed, incident light is focused and enters the light sensing element, the light entering amount of the camera under the screen is increased, and the imaging effect is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. Wherein:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of the present invention;

description of reference numerals:

1. a sub display area; 2. an optical conversion member; 3. a light sensing element; 4. an optical focusing element.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application belong to the protection scope of the present application.

With the development of the intelligent display panel technology, most display panels such as mobile phones and the like have an image acquisition function, namely, functions of photographing or recording and the like. However, to achieve the image capturing function, a corresponding image capturing device needs to be disposed on the display panel, and in order to achieve the image capturing function, a through hole, a blind hole or a light-transmitting material is usually disposed at a position of the display panel corresponding to the image capturing device to ensure that the image capturing device can capture external light smoothly, thereby achieving imaging. Meanwhile, as the requirements of people on the display panel are higher and higher, the full-screen display is produced. In order to realize full-screen display, that is, full display on the surface of the display panel, it is necessary to ensure that the position (the through hole, the blind hole, or the light-transmitting material) corresponding to the image capturing device can also be displayed. The pixel unit is required to be arranged at the position for displaying, but the pixel unit obviously blocks a part of light, so that the lighting quantity of the image acquisition device is influenced, namely the pixel unit reduces the lighting quantity of the photosensitive element under the screen, so that the imaging effect (such as brightness reduction) of the image acquisition device is reduced. That is, the light transmittance of the auxiliary display area of the existing display panel is not high, and the problem of poor imaging effect caused by insufficient incident light quantity of the camera under the screen exists.

Based on this, as shown in fig. 1, the utility model provides a display panel is applied to display device, and display device can be cell-phone, panel computer, notebook computer, intelligent wearing equipment (like intelligent bracelet, intelligent wrist-watch, intelligent helmet, intelligent glasses etc.), augmented reality equipment, virtual reality equipment etc. do not do the restriction here. The display panel may be an LCD display screen, an OLED display screen, a Micro-LED display screen, etc., and is not limited herein. The display panel includes a main display area and a sub display area 1, and both the main display area and the sub display area 1 may be used to display a picture and may be independently controlled so that the pictures are displayed simultaneously or in time division. The sub-display area 1 is reused as a light sensing element setting area, and devices such as a camera and the like are arranged below the screen.

The auxiliary display area 1 comprises a plurality of pixel display areas and a plurality of light-transmitting display areas which are arranged in an array manner, and the pixel display areas and the light-transmitting display areas are alternately arranged in a checkerboard manner; the light-transmitting display area is used for transmitting light rays through the screen and then the light rays enter the light sensing element below the screen. The areas of the pixel display area and the transparent display area can be equal or arranged according to a certain proportion. The pixel display area and the light-transmitting display area are distributed at intervals, so that pictures of the pixel display area are continuous, and enough light can still be ensured to transmit through the screen under the condition that the pixel display area does not have obvious large-area intervals. The light emitting layer in the auxiliary display area is provided with a plurality of pixel units which are arranged in an array mode, and each pixel unit comprises a plurality of light emitting sub-pixels of the pixel display area and non-light emitting sub-pixels of the light transmitting display area. It should be understood that, in the embodiment of the present application, the material of the transparent display area may be selected according to the requirement of the practical application scene, and the transparent display area is not necessarily all transparent materials, for example, gaps between pixel units and between routing lines in the transparent display area are transparent materials, as long as the transparent display area can achieve light entering and ensure the light collection amount required by the light sensing element. The embodiment of the present application does not limit the specific material of the light-transmitting display region and the arrangement of various materials. The non-display surface side of the sub-display area 1 is correspondingly provided with a light sensing element 3 and an optical conversion 2, and the light sensing element 3 can comprise a camera and other devices for collecting images. It should be understood that, in the embodiments of the present application, the specific structure of the light sensing element may be selected according to the requirements of the actual application scenario, as long as the selected light sensing element can realize the image capturing function, and the specific structure of the light sensing element is not limited in the embodiments of the present application.

The non-display surface side of the sub-display area 1 is correspondingly provided with a light sensing element 3 and an optical conversion element 2, the light sensing element 3 is arranged on the horizontal side of the optical conversion element 2, the optical conversion element 2 is provided with a light guide slope structure corresponding to the light sensing element 3 and used for changing the path of incident light, and the incident light is horizontally transmitted to the light sensing element for imaging. The embodiment of the utility model provides a display panel can improve the utilization ratio to light to improve display panel's transmissivity. Specifically, a plurality of prism structures are arranged on the light guide inclined plane structure in an array mode. The prism structure is configured to direct light incident from the light incident surface toward the light sensing element. The light guide inclined plane structure guides the light rays emitted from the light-transmitting display area through the prism structure array so that the light rays emit to the light sensing element, and therefore the light emitting angle of the emergent light rays is contracted, and the light incident amount of the light sensing element is improved. The prism structure may be a cylindrical curved surface prism structure, a triangular prism structure, a quadrangular prism structure, a pentagonal prism structure, or other prism shapes, etc., and embodiments of the present disclosure are not limited thereto. The prism structure is a prism semi-permeable membrane formed by laser direct writing or nano-imprinting.

The utility model discloses can according to the camera size, with the prism array between the different prism leaded light inclined plane angles of distance adjustment, utilize the reflection principle of light to realize that the incident light assembles and gets into the light sense component, improve the income light volume. The inclination angle of the light guide inclined plane is 35-55 degrees, and preferably, the angle of each prism corresponding to the light guide inclined plane and the angle of the horizontal plane can be respectively adjusted. For example, the triangular prism structure can be an equilateral right-angled triangle structure, and the angle of the light guide inclined plane corresponding to each prism and the angle of the horizontal plane are both 45 degrees.

In the columnar curved surface prism structures, the center of each columnar curved surface prism structure is superposed with the center of the corresponding light-transmitting display area, or the boundary line of two adjacent columnar curved surface prism structures is superposed with the center of the corresponding light-transmitting display area; the embodiment of the present invention is described by taking the coincidence between the center of each cylindrical curved surface prism structure and the center of the corresponding transparent display area as an example, and certainly, the coincidence between the boundary line of two adjacent cylindrical curved surface prism structures and the center of the corresponding transparent display area can also be used; the above solutions can be implemented to guide the light entering the transparent display area to direct the light to the light-sensing element, and the specific selection of which solution depends on the selected and designed combination.

In another embodiment of the present invention, referring to fig. 2, an optical focusing element 4 is disposed between the light sensing element 3 and the optical conversion element 2, and more light rays can be focused on the light sensing element 3 by using the light focusing characteristic of the optical focusing element, so as to ensure the display effect of the display screen body and the light incident amount, thereby ensuring the imaging effect of the light sensing. It should be understood that, in the embodiment of the present application, the specific size of the optical focusing element may be selected according to the requirement of the practical application scenario, as long as the selected specific size of the optical focusing element can ensure the amount of the light entering the light sensing element, and the specific size of the optical focusing element is not limited in the embodiment of the present application.

In an embodiment, the optical focusing element may comprise a convex lens. In a further embodiment, the optical focusing element may comprise a fresnel lens. The convex lens is made according to the principle of light refraction, the convex lens is a lens with thicker center and thinner edge, the convex lens is divided into the forms of double convex, plano convex, concave-convex (or positive meniscus) and the like, and the convex lens has the function of converging light and is also called as a convergent lens. Fresnel lens (Fresnel lens) is also known as screw lens, which is mostly a sheet made of polyolefin material by injection molding and also made of glass, one surface of the lens is smooth, the other surface is inscribed with concentric circles from small to large, the texture of the Fresnel lens is designed according to the requirements of light interference and interference, relative sensitivity and receiving angle, and the phenomena of darkening and blurring of corners can occur when a common convex lens is used. The light refraction is only generated at the interface of the medium, the convex lens is thicker, the light ray is attenuated by the part of the light which is transmitted in a straight line in the glass, and the Fresnel lens only keeps the curved surface which is refracted by removing the part of the light which is transmitted in the straight line, so that a large amount of materials can be saved, and the same light condensation effect can be achieved. Can adopt convex lens to realize the focus of light in the embodiment of this application, thereby improve the light volume that gets into photosensitive element, in addition, reduce the thickness of display panel for the thickness that minimizes optical focusing piece, in order to further improve spotlight effect simultaneously, fresnel lens can also be preferred to optical focusing piece in the embodiment of this application, the thickness that utilizes fresnel lens is thin and spotlight effect is better specific, can improve the light volume that gets into photosensitive element when minimizing display panel thickness, thereby improve photosensitive element's imaging effect.

It should be noted that the method provided by the present application is not limited to solve the problem of the under-screen camera, and is also applicable to other devices that need to be disposed under the display panel and require light transmission. The preparation method of the display panel disclosed by the application can be used for various display modes, such as OLED display, quantum dot display, Micro-LED display and the like. Here, the OLED display is taken as an example for explanation, but is not limited to this display mode.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A display panel, comprising: the display device comprises a main display area and an auxiliary display area, wherein the auxiliary display area comprises a plurality of pixel display areas and a plurality of light-transmitting display areas which are arranged in an array manner, and the pixel display areas and the light-transmitting display areas are alternately arranged;

the non-display surface side of the auxiliary display area is correspondingly provided with an imaging assembly and an optical conversion element, the light sensation element is arranged on the horizontal side of the optical conversion element, and the optical conversion element is provided with a light guide inclined plane structure corresponding to the light sensation element and used for changing the path of incident light so that light rays are horizontally transmitted to the light sensation element.

2. The display panel of claim 1, wherein the light guide slope structure has a plurality of prism structures arrayed thereon.

3. The display panel of claim 2, wherein the prismatic structure is a prismatic semi-permeable membrane formed using laser direct writing or nanoimprinting.

4. The display panel according to claim 2, wherein the prism structure is any one or a combination of a cylindrical curved surface prism structure, a triangular prism structure, a quadrangular prism structure, and a pentagonal prism structure.

5. The display panel of claim 4, wherein the triangular prism structures are equilateral right-angled triangle structures.

6. The display panel of claim 1, wherein the light guide slopes have an inclination angle of 35 ° -55 °.

7. The display panel of claim 1, wherein an optical focusing element is disposed between the light sensing element and the optical conversion element.

8. The display panel of claim 7, wherein the optical focusing element is a convex lens.

9. The display panel according to claim 1, wherein the light emitting layer in the sub-display region is provided with a plurality of pixel units arranged in an array, each of the pixel units comprising a plurality of light emitting sub-pixels of a pixel display region and a non-light emitting sub-pixel of a light transmissive display region.

10. A display device characterized by comprising the display panel according to claims 1 to 9.