CN116390597A - Display panel, display device and preparation method of display panel - Google Patents

Abstract

The application discloses a display panel, a display device and a preparation method of the display panel. The light emitting layer is positioned on the substrate and comprises a plurality of light emitting units arranged in the third area in an array. The light transmittance of the first area is larger than that of the third area, and the first area is used for setting a photosensitive assembly to realize the photosensitive function of the display panel. The substrate is provided with a reflecting part towards one side of the light emitting layer, and the reflecting part is used for reflecting light emitted by the light emitting unit and reaching the reflecting part. The reflection part and the first light absorption part are both positioned in the second area, so that the influence of the reflection part and the first light absorption part on the light emission of the light emitting unit is reduced, and the display effect of the display panel is ensured. Part of light emitted by the light emitting unit enters the second area and reaches the reflecting part, the reflecting part reflects the light to the first light absorbing part, and the first light absorbing part absorbs the light to reduce the light entering the first area, so that the problem that the light emitted by the light emitting unit enters the first area to cause light leakage of the first area is solved.

Description

Display panel, display device and preparation method of display panel

Technical Field

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

Background

With the rapid development of electronic devices, users have higher requirements on the electronic devices, so that the user experience of the electronic devices is receiving more attention from the industry.

Conventional electronic devices such as mobile phones, tablet computers, and the like need to integrate such as front cameras, handsets, and infrared sensing elements. In the prior art, a display screen may be provided with a slot (Notch) or an opening, and external light may enter a photosensitive element located below the screen through the slot or the opening. And the light leakage phenomenon of the hole area can occur on the screen after slotting or perforating.

Disclosure of Invention

The embodiment of the application provides a display panel, a display device and a preparation method of the display panel, and aims to improve the hole area light leakage phenomenon of the display panel.

An embodiment of a first aspect of the present application provides a display panel, the display panel including a first region, a second region and a third region, at least a portion of the second region being located between the first region and the third region, a light transmittance of the first region being greater than a light transmittance of the third region, the display panel including: a substrate; the light-emitting layer is positioned on the substrate and comprises a plurality of light-emitting units which are arranged in the third area in an array manner; the first light absorption part is positioned at one side of the light emitting layer, which is away from the substrate, and is positioned in the second region; the substrate is provided with a reflecting part on one side facing the light emitting layer, and the reflecting part is positioned in the second area so as to reflect the light rays emitted by the light emitting unit to the surface of the reflecting part to the first light absorbing part.

According to an embodiment of the first aspect of the present application, the reflective portion is arranged around the first region.

According to any of the preceding embodiments of the first aspect of the present application, the first light absorbing portion is disposed around the first region.

According to any one of the foregoing embodiments of the first aspect of the present application, the reflective portion has a cross-sectional dimension that tends to shrink as it gets farther from the substrate, the cross-section is perpendicular to a surface of the substrate that is closer to the light-emitting layer, and an extending direction of the cross-section is a direction from the first region toward the third region; the cross section includes a first bottom side and a second bottom side which are oppositely arranged in the thickness direction, the first bottom side is positioned on one side of the second bottom side which faces away from the substrate, and the width of the first bottom side is 30 μm-40 μm.

According to any of the foregoing embodiments of the first aspect of the present application, the cross section is trapezoidal.

According to any of the preceding embodiments of the first aspect of the present application, the cross section is an isosceles trapezoid.

According to any one of the embodiments described above, the first aspect of the present application includes a plurality of reflective portions, and the plurality of reflective portions are disposed at intervals along the first region toward the third region.

According to any of the foregoing embodiments of the first aspect of the present application, the minimum distance between two adjacent reflecting portions is equal to the width of the first bottom edge.

According to any one of the foregoing embodiments of the first aspect of the present application, the display panel includes an array layer, the array layer is located between the substrate and the light emitting layer, and a thickness of the reflective portion in a thickness direction is greater than or equal to a thickness of the array layer.

According to any of the foregoing embodiments of the first aspect of the present application, the reflecting portion and the substrate are integrally provided or separately provided.

According to any of the foregoing embodiments of the first aspect of the present application, the display panel further includes a packaging layer and a touch layer, the packaging layer is located on a side of the light emitting layer facing away from the substrate, and the touch layer is located on a side of the packaging layer facing away from the substrate; the distance L0 between the reflecting portion and the third region satisfies the following relationship:

L0≤h1*L/(2h1+h2)

wherein h1 represents the total thickness of the array layer and the light emitting layer along the thickness direction, h2 represents the total thickness of the packaging layer and the touch layer along the thickness direction, and L represents the width of the second region.

According to any of the foregoing embodiments of the first aspect of the present application, the front projection of the reflective portion on the substrate is located within the front projection of the first light absorbing portion on the substrate.

According to any of the foregoing embodiments of the first aspect of the present application, at least a portion of the first light absorbing portion coincides with an edge of the second region adjacent to the first region at an orthographic projection edge of the substrate.

According to any of the foregoing embodiments of the first aspect of the present application, the display panel includes an optical adhesive layer, and the first light absorbing portion is located between the light emitting layer and the optical adhesive layer.

According to any of the foregoing embodiments of the first aspect of the present application, the display panel includes an optical adhesive layer, and the first light absorbing portion is located between the light emitting layer and the optical adhesive layer;

according to any one of the foregoing embodiments of the first aspect of the present application, the display panel further includes a second light absorbing portion, the second light absorbing portion is located in the optical adhesive layer, and the second light absorbing portion is located in the second area;

according to any one of the foregoing embodiments of the first aspect of the present application, the second light absorbing portion includes a light absorbing block penetrating through the optical adhesive layer in a thickness direction; or the second light absorption part comprises a plurality of light absorption particles which are distributed in the optical adhesive layer at intervals;

according to any of the preceding embodiments of the first aspect of the present application, the diameter of the light absorbing particles is smaller than the thickness of the optical glue layer in the thickness direction.

According to any of the foregoing embodiments of the first aspect of the present application, the second light absorbing portion has a largest dimension that is less than or equal to a thickness of the optical adhesive layer in a thickness direction.

An embodiment of a second aspect of the present application provides a display device including a display panel of any one of the above embodiments.

An embodiment of a third aspect of the present application provides a method for manufacturing a display panel, where the display panel includes a first region, a second region, and a third region, at least a portion of the second region is located between the first region and the third region, and light transmittance of the first region is greater than light transmittance of the third region, the method including:

preparing a substrate, wherein a reflecting part is arranged on the substrate;

preparing a light-emitting layer on one side of the substrate close to the reflecting part, wherein the light-emitting layer comprises a plurality of light-emitting units arranged in an array in a third area;

and preparing a first light absorption part on one side of the light emitting layer, which is away from the substrate, wherein the reflecting part and the first light absorption part are both positioned in the second area so as to reflect the light emitted by the light emitting unit to the surface of the reflecting part to the first light absorption part.

According to the display panel of the embodiment of the application, the display panel comprises a substrate, a light emitting layer and a first light absorbing part. The light-emitting unit emits light to enable the third area to emit light for display. The light transmittance of the first area is larger than that of the third area, and the first area is used for setting a photosensitive assembly to realize the photosensitive function of the display panel. The substrate is provided with a reflecting part towards one side of the light emitting layer, and the reflecting part is used for reflecting light emitted by the light emitting unit and reaching the reflecting part. The reflection part and the first light absorption part are both positioned in the second area, so that the influence of the reflection part and the first light absorption part on the light emission of the light emitting unit is reduced, and the display effect of the display panel is ensured. Part of light emitted by the light emitting unit enters the second area and reaches the reflecting part, the reflecting part reflects the light to the first light absorbing part, and the first light absorbing part absorbs the light to reduce the light entering the first area, so that the problem that the light emitted by the light emitting unit enters the first area to cause light leakage of the first area is solved.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings, in which like or similar reference characters designate the same or similar features, and which are not to scale.

Fig. 1 is a schematic top view of a display panel according to an embodiment of a first aspect of the present application;

FIG. 2 is a partial cross-sectional view at A-A of FIG. 1;

FIG. 3 is a schematic top view of a display panel according to another embodiment;

FIG. 4 is a partial cross-sectional view of a display panel according to another embodiment;

fig. 5 is a partial cross-sectional view of a display panel according to still another embodiment;

FIG. 6 is a partial cross-sectional view of a display panel according to still another embodiment;

FIG. 7 is a partial cross-sectional view of a display panel according to still another embodiment;

FIG. 8 is a partial cross-sectional view of a display panel according to still another embodiment;

fig. 9 is a partial cross-sectional view of a display panel provided by yet another embodiment;

fig. 10 is a partial cross-sectional view of a display device provided in an embodiment of a second aspect of the present application;

fig. 11 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the third aspect of the present application.

Reference numerals illustrate:

10. a display panel; 11. a first zone; 12. a second zone; 13. a third zone;

100. a substrate; 110. a reflection section; 111. a first bottom edge; 112. a second bottom edge;

200. a light emitting layer; 210. a light emitting unit;

300. a first light absorption portion;

400. an array layer;

500. an encapsulation layer;

600. a touch layer;

700. an optical adhesive layer; 710. a second light absorption portion; 720. a cover plate;

800. a protective film;

900. a composite film layer;

z, thickness direction.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below to make the objects, technical solutions and advantages of the present application more apparent, and to further describe the present application in conjunction with the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to explain the present application and are not configured to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.

On electronic devices such as mobile phones and tablet computers, it is necessary to integrate a photosensitive component such as a front camera, an infrared light sensor, a proximity light sensor, and the like on the side where the display panel is disposed. In some embodiments, a light-transmitting area may be disposed on the electronic device, and the photosensitive element is disposed on the back of the light-transmitting area, so that the light transmittance of the photosensitive element needs to be improved in order to improve the photosensitive performance of the photosensitive element.

In order to increase the light transmittance of the light-transmitting region, a Notch (Notch) or an opening may be formed in the display screen, and external light may enter the photosensitive element located below the screen through the Notch or the opening in the screen. However, after the slot or the opening, part of the light of the display area reaches the light-transmitting area, thereby causing the light leakage phenomenon of the light-transmitting display area. The light leakage phenomenon of the light-transmitting display region includes two types: the first is that the light of the display area reaches the substrate of the display area near the edge of the light transmission area and is reflected to the light transmission area through the substrate; the second type is that the refractive index of the optical adhesive layer is larger, and light entering the optical adhesive layer can be totally reflected in the optical adhesive layer, so that the light reaches the light-transmitting area.

In order to solve the above-mentioned problems, embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel, and embodiments of the display panel, the display device, and the method for manufacturing a display panel will be described below with reference to the accompanying drawings.

Embodiments of the present application provide a display panel, which may be an organic light emitting diode (Organic Light Emitting Diode, OLED) display panel.

Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic top view of a display panel according to an embodiment of a first aspect of the present application; fig. 2 is a partial cross-sectional view at A-A in fig. 1.

As shown in fig. 1 and 2, the embodiment of the first aspect of the present application provides a display panel 10, where the display panel 10 includes a first region 11, a second region 12, and a third region 13, at least a portion of the second region 12 is located between the first region 11 and the third region 13, the light transmittance of the first region 11 is greater than the light transmittance of the third region 13, and the display panel 10 includes a substrate 100, a light emitting layer 200, and a first light absorbing portion 300; the light emitting layer 200 is positioned on the substrate 100 and includes a plurality of light emitting cells 210 arranged in an array in the third region 13; the first light absorbing portion 300 is located at a side of the light emitting layer 200 away from the substrate 100, wherein a reflective portion 110 is disposed at a side of the substrate 100 facing the light emitting layer 200, and the reflective portion 110 and the first light absorbing portion 300 are both located in the second region 12 so as to reflect light emitted from the light emitting unit 210 to the surface of the reflective portion 110 to the first light absorbing portion 300.

According to the display panel 10 of the embodiment of the present application, the display panel 10 includes the substrate 100, the light emitting layer 200, and the first light absorbing part 300. The light emitting layer 200 is located on the substrate 100 and includes a plurality of light emitting units 210 arranged in an array in the third region 13, and the light emitting units 210 emit light so that the third region 13 emits light to display. The light transmittance of the first region 11 is greater than that of the third region 13, and the first region 11 is used for arranging a photosensitive assembly to realize the photosensitive function of the display panel 10. The substrate 100 is provided with a reflecting portion 110 at a side facing the light emitting layer 200, and the reflecting portion 110 is configured to reflect light emitted from the light emitting unit 210 and reaching the reflecting portion 110. The reflective portion 110 and the first light absorbing portion 300 are both located in the second region 12, so that the influence of the reflective portion 110 and the first light absorbing portion 300 on the light emission of the light emitting unit 210 is reduced, and the display effect of the display panel 10 is ensured. Part of the light emitted from the light emitting unit 210 enters the second region 12 and reaches the reflecting portion 110, the reflecting portion 110 reflects the light to the first light absorbing portion 300, and the first light absorbing portion 300 absorbs the light to reduce the light entering the first region 11, thereby improving the problem that part of the light emitted from the light emitting unit 210 enters the first region 11 to cause light leakage in the first region 11.

Alternatively, the first area 11 is a light-transmitting area or an aperture area, and is used to provide a photosensitive assembly, and the photosensitive assembly may be disposed on the backlight side of the display panel 10 in the first area 11.

Alternatively, the substrate 100 is Polyimide (PI), and the PI substrate 100 has a low transmittance and a high reflectance to light, so that the light is reflected when reaching the substrate 100. The substrate 100 located in the third region 13 may reflect light to the light emitting surface of the display panel 10, so as to improve the display effect. The substrate 100 positioned in the second region 12 may reflect a portion of the light entering the second region 12 to the first light absorbing part 300, thereby reducing the light entering the first region 11 and improving the light leakage phenomenon of the first region 11.

Optionally, the display panel 10 includes a filter layer disposed on a side of the light emitting layer 200 facing away from the substrate 100, where the filter layer includes a filter portion and a Black Matrix (BM) disposed at intervals, and the filter portion filters ambient light entering the third region 13, so as to reduce an influence of the ambient light on light emission of the third region 13. BM is disposed between adjacent filter portions to improve the problem of color mixing of light between the filter portions.

Alternatively, the first light absorbing part 300 is BM, and the first light absorbing part 300 and the filter layer have the same material portion, so that when the filter layer of the display panel 10 is prepared, the first light absorbing part 300 can be prepared at the same time, thereby simplifying the preparation process.

Referring to fig. 3, fig. 3 is a schematic top view of a display panel according to another embodiment.

As shown in fig. 3, alternatively, the reflective portion 110 is disposed around the first area 11, that is, each position around the first area 11 is correspondingly disposed with the reflective portion 110, and the surrounding reflective portion 110 has a larger reflection range. When the light emitted from the light emitting unit 210 of the third region 13 enters the second region 12, the reflecting portion 110 can receive the light emitted from the light emitting unit 210 around the first region 11 and reflect the light to the first light absorbing portion 300, thereby further reducing the light entering the first region 11.

Alternatively, the first light absorbing parts 300 are disposed around the first region 11, and when the reflective parts 110 around the first region 11 receive the light from the third region 11, the light can be reflected to the first light absorbing parts 300 and absorbed by the first light absorbing parts 300 to reduce the light entering the first region 11.

Referring to fig. 4, fig. 4 is a partial cross-sectional view of a display panel according to another embodiment.

As shown in fig. 4, in some alternative embodiments, the size of the cross section of the reflective portion 110 has a tendency to shrink as it gets farther from the substrate 100, the cross section is perpendicular to the surface of the substrate 100 that is close to the light emitting layer, and the extending direction of the cross section is the direction of the first region 11 toward the third region 13; the cross section includes a first bottom edge 111 and a second bottom edge 112 disposed opposite to each other in the thickness direction Z, the first bottom edge 111 being located on a side of the second bottom edge 112 facing away from the substrate 100, the first bottom edge 111 having a width of 30 μm to 40 μm.

In these alternative embodiments, the cross-section of the reflective portion 110 decreases in size in a direction away from the substrate 100, i.e., the width of the first bottom edge 111 is smaller than the width of the second bottom edge 112, i.e., the cross-section is a positive trapezoid structure, and when light reaches the side edge connecting the first bottom edge 111 and the second bottom edge 112, the light is reflected to the first light absorbing portion 300 or the light emitting surface of the display panel 10. The first bottom 111 is disposed away from the substrate 100, and when the light emitted from the light emitting unit 210 enters the second region 12 from the third region 13, a part of the light reaches the first bottom 111 and is reflected to the first light absorbing part 300 via the first bottom 111. The width of the first bottom edge 111 is greater than or equal to 30 μm, so as to solve the problem that the light leakage phenomenon is still serious because the light receiving range of the reflecting portion 110 is too small due to the too small width of the first bottom edge 111, and the light entering the first region 11 cannot be reduced well. The width of the first base 111 is less than or equal to 40 μm to improve the problem of increasing the material cost due to the excessive width of the first base 111, and the range in which the first base 111 can reflect light to the first light absorbing part 300 is limited, and there may be a partial region where the excessive width of the first base 111 reflects light into the first region 11.

Optionally, the first bottom edge 111 and the second bottom edge 112 are disposed in parallel. When part of the light reaches the first bottom edge 111, it may be directly reflected to the first light absorbing part 300.

Optionally, the width of the first bottom edge 111 is greater than the width of the second bottom edge 112, that is, the cross section is in an inverted trapezoid structure, when light reaches the side edge, the light is reflected to the surface of the substrate 100, and then reflected to the light emitting surface through the surface of the substrate 100, so as to improve the display effect of the display panel 10.

Optionally, the cross section is isosceles trapezoid. The isosceles trapezoid reflecting part 110 has regular structure and is convenient to prepare.

Alternatively, the reflecting portion 110 may have a rectangular or arc-shaped cross section. For example, the reflection part 110 extends along an extended path surrounding the first region 11, and a cross section of the reflection part 110 refers to a cross section of the reflection part 110 on a plane intersecting the extended path.

In these alternative embodiments, the cross-section of the reflective portion 110 is rectangular or arc-shaped, so that the reflective portion 110 has a more regular shape, which facilitates the preparation of the reflective portion 110.

Referring to fig. 5, fig. 5 is a partial cross-sectional view of a display panel according to another embodiment.

As shown in fig. 5, in some alternative embodiments, the reflective parts 110 are plural, and the reflective parts 110 are disposed at intervals in the direction from the first region 11 to the third region 13.

In these alternative embodiments, the plurality of reflection parts 110 are spaced apart in the direction of the first region 11 toward the third region 13, and the plurality of reflection parts 110 increase the receiving range of the light so that more light can reach the reflection parts 110 and be reflected to the first light absorbing part 300. And the plurality of reflecting portions 110 are used in cooperation, so that the light can be more precisely reflected to the first light absorbing portion 300 by adjusting the size and the position of each reflecting portion 110.

Optionally, the plurality of reflecting portions 110 are uniformly distributed, and the reflecting portions 110 are uniformly arranged, so that the preparation of the reflecting portions 110 is facilitated.

Alternatively, the distance between the reflecting portions 110 may be different, and the distance between the reflecting portions 110 is adjusted according to the actual reflection requirement, so as to reflect more light to the first light absorbing portion 300.

In some alternative embodiments, the minimum distance between two adjacent reflecting portions 110 is equal to the width of the first bottom edge 111. When the width of the first bottom edge 111 is smaller than the second bottom edge 112, the minimum distance between the adjacent two reflection parts 110 is the distance between the second bottom edges 112 of the adjacent two reflection parts 110.

In these alternative embodiments, the distance between the adjacent reflecting portions 110 is equal to the width of the first bottom edge 111, and the structure is regular, so that the preparing of the reflecting portions 110 is facilitated. On the one hand, the problem that the light leakage phenomenon is still serious due to the fact that the light receiving range of the reflecting parts 110 is too small and the light entering the first area 11 cannot be well reduced due to the fact that the distance between the adjacent reflecting parts 110 is too small is solved, and on the other hand, the problem that the light is reflected into the first area 11 due to the fact that the distance between the adjacent reflecting parts 110 is too large is solved.

Referring to fig. 6, fig. 6 is a partial cross-sectional view of a display panel according to still another embodiment.

As shown in fig. 6, in some alternative embodiments, the display panel 10 includes an array layer 400, the array layer 400 being located between the substrate 100 and the light emitting layer 200, and the thickness of the reflective part 110 in the thickness direction Z is greater than or equal to the thickness of the array layer 400.

In these alternative embodiments, the array layer 400 is used to provide a driving circuit for controlling the light emission of the light emitting unit 210. The array layer 400 is located between the substrate 100 and the light emitting layer 200, and the reflective portion 110 is disposed protruding from the substrate 100, i.e., at least a portion of the reflective portion 110 is disposed inside the array layer 400. The reflective portion 110 is disposed inside the array layer 400 to be disposed close to the light emitting layer 200, so that more light entering the second region 12 can reach the reflective portion 110 and be reflected to the first light absorbing portion 300. When the thickness of the reflective portion 110 is greater than the thickness of the array layer 400, the reflective portion 110 extends to the light emitting layer 200 in the thickness direction Z, increasing the reflective range of the reflective portion 110 for light, and further reducing the light entering the first region 11. The thickness of the reflection part 110 is equal to that of the array layer 400, and the influence of the reflection part 110 entering the light emitting layer 200 on the light emitting layer 200 can be reduced while having a large reflection range.

Alternatively, the reflecting portion 110 is integrally provided with the substrate 100 or separately provided.

In these alternative embodiments, the reflective portion 110 is integrally formed with the substrate 100, and the reflective portion 110 is made of the same material as the substrate 100 and is prepared together with the substrate 100, so that the preparation process is simplified, and the substrate 100 is made of a reflective material, so that light can be reflected to the light emitting surface or the first light absorbing portion 300 of the display panel 10 after reaching the substrate 100. The reflective portion 110 and the substrate 100 are separately disposed, and the material for preparing the reflective portion 110 is deposited on the substrate 100, so that the material for preparing the reflective portion 110 can be adjusted according to actual needs to better reflect the light entering the second region 12.

Referring to fig. 7, fig. 7 is a partial cross-sectional view of a display panel according to still another embodiment.

As shown in fig. 7, in some alternative embodiments, the display panel 10 further includes an encapsulation layer 500 and a touch layer 600, the encapsulation layer 500 is located on a side of the light emitting layer 200 facing away from the substrate 100, and the touch layer 600 is located on a side of the encapsulation layer 500 facing away from the substrate 100; the distance L0 between the reflection portion 110 and the third region 13 satisfies the following relationship:

L0≤h1*L/(2h1+h2)

where h1 represents the total thickness of the array layer 400 and the light emitting layer 200 along the thickness direction Z, h2 represents the total thickness of the encapsulation layer 500 and the touch layer 600 along the thickness direction Z, and L represents the width of the second region 13.

The width L of the second region 12 refers to the minimum extension distance of the second region 12 in the direction in which the first region 11 points to the third region 13.

In these alternative embodiments, the encapsulation layer 500 is disposed on a side of the light emitting layer 200 facing away from the substrate 100, for encapsulating the light emitting layer 200 to isolate water oxygen, and to improve the problem of corrosion of the light emitting unit 210 due to water oxygen entering the light emitting layer 200. The touch layer 600 is used for realizing the touch function of the display panel 10. The first light absorbing part 300 is aligned near the edge of the first region 11 and the edge of the second region 12, so that the first light absorbing part 300 can absorb light farther from the third region 13, improving the degree of light absorption. The distance L0 between the reflecting portion 110 and the third region 13 is at most h1×l/(2h1+h2), at which distance the reflecting portion 110 can receive the light reflected by the reflecting portion 110 to the edge of the first light absorbing portion 300 near the first region 11, i.e. the light that can be reflected to the first light absorbing portion 300 and is farthest from the third region 13 can be received by the reflecting portion 110 and reflected to the first light absorbing portion 300, so as to minimize the light entering the first region 11 and improve the light leakage phenomenon of the first region 11. When the distance L0 is smaller than h1×l/(2h1+h2), the reflecting portion 110 can receive and reflect a portion of the light to the first light absorbing portion 300, so as to solve the problem that the light received by the reflecting portion 110 and reflected to the first light absorbing portion 300 is less due to the excessive distance L0, and most of the light still enters the first region 11 to cause light leakage.

In some alternative embodiments, the front projection of the reflective portion 110 onto the substrate 100 is located within the front projection of the first light absorbing portion 300 onto the substrate 100.

In these alternative embodiments, the front projection of the first light absorbing portion 300 on the substrate 100 covers the front projection arrangement of the reflective portion 110 on the substrate 100, and the first light absorbing portion 300 has a larger light absorbing range, so that the first light absorbing portion 300 absorbs the light reflected by the reflective portion 110 to a greater extent, and reduces the light entering the first region 11.

Optionally, at least part of the first light absorbing portion 300 coincides with the edge of the second region 12 near the first region 11 at the orthographic projection edge of the substrate 100. The first light absorbing portion 300 extends to the edge of the second region 12 near the first region 11, so that the light absorbing range of the first light absorbing portion 300 can be increased, so that the large-angle light reflected by the reflecting portion 110 can reach the first light absorbing portion 300 more, and the light entering the first region 11 can be reduced better.

Alternatively, the first light absorbing part 300 may extend partially into the first region 11, further increasing the light absorbing range of the first light absorbing part 300.

Optionally, the first light absorbing portion 300 is disposed to cover the second region 12, and when the second region 12 is completely covered by the first light absorbing portion 300, the light entering the second region 12 can be absorbed by the first light absorbing portion 300 more, so as to further reduce the light entering the first region 11.

Referring to fig. 8 and fig. 9 together, fig. 8 is a partial cross-sectional view of a display panel according to still another embodiment; fig. 9 is a partial cross-sectional view of a display panel according to still another embodiment.

As shown in fig. 8 and 9, in some alternative embodiments, the display panel 10 includes an optical adhesive layer 700, and the first light absorbing part 300 is located between the light emitting layer 200 and the optical adhesive layer 700.

In these alternative embodiments, the first light absorbing part 300 is located between the light emitting layer 200 and the optical cement layer 700, and on one hand, the first light absorbing part 300 absorbs part of the light from the light emitting unit 210 and part of the light reflected from the reflecting part 110, and on the other hand, the light emitted from the light emitting unit 210 enters the optical cement layer 700 to generate a waveguide effect, and part of the light generated by the waveguide reaction reaches the first light absorbing part 300 and can be absorbed by the first light absorbing part 300, thereby reducing the light reaching the first region 11. The optical cement layer 700 is used to bond a film layer, such as a cover plate 720, to the display panel 10.

The waveguide reaction means that, since the refractive index of the optical glue layer 700 is greater than that of the adjacent film layers, when light enters the optical glue layer 700 and reaches the interface between the optical glue layer 700 and other film layers, total reflection occurs, so that the light is continuously reflected inside the optical glue layer 700 until reaching the first region 11.

In some alternative embodiments, the display panel 10 further includes a second light absorbing portion 710, the second light absorbing portion 710 being located within the optical adhesive layer 700.

In these alternative embodiments, the second light absorbing portion 710 is disposed within the optical cement layer 700 such that the portion of light entering the optical cement layer 700 and causing the waveguide effect is absorbed by the second light absorbing portion 710, reducing light entering the first region 11 via the optical cement layer 700.

As shown in fig. 8, optionally, a second light absorbing portion 710 is located in the second region 12.

As shown in fig. 8, optionally, the second light absorbing portion 710 includes a light absorbing block, and the light absorbing block penetrates through the optical adhesive layer 700 in the thickness direction Z, and light of the optical adhesive layer 700 with a waveguide effect is absorbed by the second light absorbing portion 710 during multiple reflections from the third region 13 to the first region 11, so as to further reduce light entering the first region 11. Illustratively, in some embodiments, the light-absorbing blocks are configured from a black-equipped matrix.

As shown in fig. 9, the second light absorbing part 710 may include a plurality of light absorbing particles 711, and the light absorbing particles 711 may be spaced apart within the optical cement layer 700. The plurality of light absorbing particles 711 are spaced apart such that light having a waveguide effect within the optical cement layer 700 can be more absorbed by the light absorbing particles 711, further reducing light entering the first region 11.

Optionally, the diameter of the light absorbing particles 711 is smaller than the thickness of the optical cement layer 70 in the thickness direction Z, so that light having a waveguide effect can be absorbed to a greater extent, the light entering the first region 11 from the optical cement layer 700 is further reduced, and the functional characteristics of the optical cement layer are ensured.

The structural design in this embodiment may be applied to other display panels 10, and may be specifically selected according to practical situations, which is not specifically limited in this application.

Embodiments of the second aspect of the present application also provide a display device including the display panel 10 of any of the embodiments of the first aspect. Since the display device provided in the second embodiment of the present application includes the display panel 10 in any one of the embodiments of the first aspect, the display device provided in the second embodiment of the present application has the beneficial effects of the display panel 10 in any one of the embodiments of the first aspect, which are not described herein.

Referring to fig. 10, fig. 10 is a partial cross-sectional view of a display device according to a second embodiment of the present application.

As shown in fig. 10, the display device may optionally include a protective film 800 disposed on a side of the substrate 100 facing away from the light emitting layer 200, for supporting and protecting the display panel 10.

Alternatively, the display device includes a composite film layer 900 disposed on a side of the protective film 800 facing away from the substrate 100, the composite film layer 900 including an SCF (Super Clean Foam) assembly including a buffer layer, an adhesive layer, and a metal layer disposed in a stacked manner. The buffer layer is made of foam. When the display device is impacted, the buffer layer can perform a buffering function to reduce damage to the display panel 10 by the impact. The bonding layer is used for bonding the buffer layer and the metal layer. The metal layer can conduct out the static electricity of the display panel 10 to reduce the influence of the static electricity on the display panel 10.

The display device in the embodiment of the application includes, but is not limited to, a mobile phone, a personal digital assistant (Personal Digital Assistant, abbreviated as PDA), a tablet computer, an electronic book, a television, an access control, a smart phone, a console, and other devices with display functions.

Referring to fig. 11, fig. 11 is a schematic flow chart of a method for manufacturing a display panel according to a third embodiment of the present application. And refer to the display panels of fig. 1-10.

An embodiment of a third aspect of the present application provides a method for manufacturing a display panel 10, where the display panel 10 includes a first region 11, a second region 12, and a third region 13, at least a portion of the second region 12 is located between the first region 11 and the third region 13, and a light transmittance of the first region 11 is greater than a light transmittance of the third region 13, and the method includes:

step S01: a substrate is prepared, and a reflecting portion is provided on the substrate.

Step S02: and preparing a light-emitting layer on one side of the substrate close to the reflecting part, wherein the light-emitting layer comprises a plurality of light-emitting units arranged in an array in the third region.

Step S03: and preparing a first light absorption part on one side of the light emitting layer, which is away from the substrate, wherein the reflecting part and the first light absorption part are both positioned in the second area so as to reflect the light emitted by the light emitting unit to the surface of the reflecting part to the first light absorption part.

According to the manufacturing method of the display panel 10 in the embodiment of the application, the light transmittance of the first area 11 is greater than the light transmittance of the third area 13, and the first area 11 is used for arranging a photosensitive assembly to realize the photosensitive function of the display panel 10. The substrate 100 is prepared through step S01, and a side of the substrate 100 facing the light emitting layer 200 is provided with a reflecting portion 110, and the reflecting portion 110 serves to reflect light emitted from the light emitting unit 210 and reaching the reflecting portion 110. The light emitting layer 200 is prepared through step S02, and the light emitting layer 200 is positioned on the substrate 100 and includes a plurality of light emitting cells 210 arranged at intervals in the third region 13, and the light emitting cells 210 emit light so that the third region 13 emits light to display. The first light-absorbing portion 300 is prepared in step S03, and the reflective portion 110 and the first light-absorbing portion 300 are both located in the second region 12, so that the influence of the reflective portion 110 and the first light-absorbing portion 300 on the light emission of the light-emitting unit 210 is reduced, and the display effect of the display panel 10 is ensured. Part of the light emitted from the light emitting unit 210 enters the second region 12 and reaches the reflecting portion 110, the reflecting portion 110 reflects the light to the first light absorbing portion 300, and the first light absorbing portion 300 absorbs the light to reduce the light entering the first region 11, thereby improving the problem that part of the light emitted from the light emitting unit 210 enters the first region 11 to cause light leakage in the first region 11.

In some alternative embodiments, step S01 includes,

disposing a substrate material on a base plate;

coating photoresist on one side of the substrate material away from the base plate and performing exposure treatment;

etching is carried out by adopting a developing solution, and a substrate is obtained, wherein the substrate comprises a reflecting part protruding towards the light-emitting layer.

These embodiments are not all details described in detail according to the embodiments described hereinabove, nor are they intended to limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various modifications as are suited to the particular use contemplated. This application is to be limited only by the claims and the full scope and equivalents thereof.

Claims (10)

1. A display panel comprising a first region, a second region, and a third region, at least a portion of the second region being located between the first region and the third region, the first region having a light transmittance that is greater than a light transmittance of the third region, the display panel comprising:

a substrate;

a light emitting layer on the substrate and including a plurality of light emitting units arranged in an array in the third region; the method comprises the steps of,

the first light absorption part is positioned at one side of the light emitting layer away from the substrate and positioned in the second region;

and a reflecting part is arranged on one side of the substrate facing the light emitting layer, and the reflecting part is positioned in the second area so as to reflect the light emitted by the light emitting unit to the surface of the reflecting part to the first light absorbing part.

2. The display panel according to claim 1, wherein the reflection portion is disposed around the first region;

preferably, the first light absorbing portion is disposed around the first region.

3. The display panel according to claim 1, wherein a size of a cross section of the reflecting portion has a tendency to shrink as it is farther from the substrate, the cross section is perpendicular to a surface of the substrate that is closer to the light emitting layer, and an extending direction of the cross section is a direction in which the first region faces the third region; the cross section comprises a first bottom edge and a second bottom edge which are oppositely arranged in the thickness direction, the first bottom edge is positioned at one side of the second bottom edge, which is away from the substrate, and the width of the first bottom edge is 30-40 mu m;

preferably, the cross section is trapezoidal;

preferably, the cross section is isosceles trapezoid.

4. A display panel according to claim 3, wherein the plurality of reflection portions are provided at intervals in a direction along the first region toward the third region;

preferably, the minimum distance between two adjacent reflecting portions is equal to the width of the first bottom edge.

5. The display panel according to claim 1, wherein the display panel includes an array layer between the substrate and the light-emitting layer, and wherein a thickness of the reflective portion in a thickness direction is equal to or greater than a thickness of the array layer;

preferably, the reflecting portion and the substrate are integrally provided or separately provided.

6. The display panel of claim 5, further comprising an encapsulation layer and a touch layer, the encapsulation layer being on a side of the light emitting layer facing away from the substrate, the touch layer being on a side of the encapsulation layer facing away from the substrate; the distance L0 between the reflecting portion and the third region satisfies the following relationship:

L0≤h1*L/(2h1+h2)

wherein h1 represents the total thickness of the array layer and the light-emitting layer along the thickness direction, h2 represents the total thickness of the packaging layer and the touch layer along the thickness direction, and L represents the width of the second region.

7. The display panel of claim 1, wherein the front projection of the reflective portion on the substrate is located within the front projection of the first light absorbing portion on the substrate;

preferably, at least part of the first light absorbing portion coincides with an edge of the second region adjacent to the first region at an orthographic projection edge of the substrate.

8. The display panel of claim 1, wherein the display panel comprises an optical glue layer, the first light absorbing portion being located between the light emitting layer and the optical glue layer;

preferably, the display panel further includes a second light absorption portion, the second light absorption portion is located in the optical adhesive layer, and the second light absorption portion is located in the second region;

preferably, the second light absorbing part includes a light absorbing block penetrating through the optical adhesive layer in a thickness direction; or, the second light absorption part comprises a plurality of light absorption particles, and the light absorption particles are distributed in the optical adhesive layer at intervals;

preferably, the diameter of the light absorbing particles is smaller than the thickness of the optical adhesive layer in the thickness direction.

9. A display device comprising the display panel of any one of claims 1-8.

10. A method of manufacturing a display panel, the display panel including a first region, a second region, and a third region, at least a portion of the second region being located between the first region and the third region, the first region having a light transmittance greater than a light transmittance of the third region, the method comprising:

preparing a substrate, wherein a reflecting part is arranged on the substrate;

preparing a light-emitting layer on one side of the substrate close to the reflecting part, wherein the light-emitting layer comprises a plurality of light-emitting units arranged in an array in the third region;

and preparing a first light absorption part on one side of the light emitting layer, which is far away from the substrate, wherein the reflecting part and the first light absorption part are both positioned in the second area so as to reflect the light emitted by the light emitting unit to the surface of the reflecting part to the first light absorption part.

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