Display panel and display device

By setting a template layer and a reflection layer under the color filter part of the OLED display, the reflective layer reflects the light emitted from a large angle, which solves the problems of poor viewing and low light output efficiency of the OLED display at a large viewing angle, and achieves brightness improvement and visual improvement .

CN117560970BActive Publication Date: 2025-02-11HKC CORP LTD
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Patent Information

Application Number
CN202311461565.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-11-03
Publication Date
2025-02-11
Estimated Expiration
2043-11-03

AI Technical Summary

Technical Problem

The OLED display has a poor appearance at a large viewing angle, and due to the existence of the black matrix, the light output efficiency is reduced and the brightness is insufficient.

Method used

A template layer is provided below the color filter part, and an inclined surface is provided on the side of the template layer, and a reflective layer is provided on the inclined surface. By controlling the side inclination angle of the template layer, the inclination angle of the reflective layer extends from the open area to the non-open area, and the reflective layer reflects large-angle outgoing light to improve brightness and large-viewing angle.

Benefits of technology

It improves the brightness of the display panel and the visual feeling at a large viewing angle, reduces the reflection problem of ambient light, and thus improves the taste of the display panel.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application discloses a display panel and a display device, wherein the display panel comprises a substrate, a light-emitting unit layer, an encapsulation layer and a color filter layer; the color filter layer comprises a black matrix and a plurality of color filter portions, the black matrix is ​​arranged in the non-opening area, and the color filter portion is arranged in the opening area; the display panel further comprises a template layer and a reflection layer, the template layer is arranged in the opening area and below the color filter portion; the template layer is formed of a light-transmitting material; within the same opening area, the width of the template layer gradually decreases along the light-emitting direction, and the side surface of the template layer is an inclined surface; the reflection layer is used to reflect light, the reflection layer is arranged on the inclined surface of the template layer, and the angle between the reflection layer and the bottom surface of the template layer is an acute angle or a right angle; the brightness of the display panel and the display device and the viewing experience under a wide viewing angle are improved by the effect of the reflection layer.
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Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] With the continuous development of OLED (Organic Light-Emitting Diode) display technology, OLED is increasingly used in displays such as smartphones, tablets, computers, and televisions. OLED displays have the advantages of being thin and light, high contrast, fast response, wide viewing angle, high brightness, and full color. In order to prevent reflections on the screen, OLED devices generally require circular polarizers, but their circular polarizers cause too much light loss. A new technology to replace polarizers, represented by COE (Color film on Encapsulation, forming a color filter on a thin film encapsulation structure), has emerged, also known as POL-less technology. That is, a technical solution that uses color filters to replace polarizers. The maximum transmittance of the color filter can reach 60%, which can greatly increase the brightness of the light, thereby reducing the power consumption of OLED devices and increasing their lifespan. Through the color filter process, R, G, and B color filter parts are deposited. In order to prevent cross-color between different colors, a black matrix (BM) is set between different color blocks to absorb the colored light at the edge of the color block. Therefore, these color filter parts are separated by the black matrix (BM).

[0003] Although the black matrix can be used to block the incidence of ambient light, it will also affect the efficiency of light output, reduce the brightness of light output at a wide viewing angle, and cause the display panel to have a poor viewing experience at a wide viewing angle. Summary of the invention

[0004] The purpose of the present application is to provide a display panel and a display device, which can improve the brightness of the display panel and the display device and the viewing experience at a wide viewing angle through the effect of a reflective layer.

[0005] The present application discloses a display panel, comprising an opening area and a non-opening area, wherein the display panel comprises a substrate, a light-emitting unit layer, an encapsulation layer and a color filter layer; the light-emitting unit layer is arranged on the substrate; the encapsulation layer is arranged on the light-emitting unit layer; the color filter layer is arranged on the encapsulation layer; wherein the color filter layer comprises a black matrix and a plurality of color filter portions, the black matrix is ​​arranged in the non-opening area, and the color filter portion is arranged in the opening area; the display panel further comprises a template layer and a reflection layer, the template layer is arranged in the opening area and below the color filter portion; the template layer is formed of a light-transmitting material; within the same opening area, the width of the template layer gradually decreases along the light emitting direction, and the side surface of the template layer is an inclined surface; the reflection layer is used to reflect light, the reflection layer is arranged on the inclined surface of the template layer, and the angle formed between the reflection layer and the bottom surface of the template layer is an acute angle or a right angle.

[0006] Optionally, the angle formed by the reflective layer and the bottom surface of the template layer is between 40 degrees and 90 degrees.

[0007] Optionally, the light-transmitting material includes a transparent organic material; the template layer is arranged between the color filter portion and the encapsulation layer, and the two sides of the template layer are respectively connected to the side surfaces of the black matrix; in the same non-opening area, the width of the black matrix gradually increases along the light output direction, one side of the reflective layer contacts the side surface of the template layer, and the other side of the reflective layer contacts the side surface of the black matrix.

[0008] Optionally, in the same opening area, the orthographic projection of the template layer on the substrate is located within the orthographic projection range of the color filter portion on the substrate.

[0009] Optionally, the light-transmitting material includes a color filter material, and in the same opening area, the color of the template layer is consistent with the color of the color filter portion.

[0010] Optionally, in each of the non-opening areas, the black matrix includes a first light-shielding portion and a second light-shielding portion, the first light-shielding portion is arranged on the second light-shielding portion, the width of the second light-shielding portion gradually increases along the light-emitting direction, the second light-shielding portion is an inverted trapezoid, and the reflective layer is arranged on the side of the second light-shielding portion; the side inclination angle of the template layer is consistent with the side inclination angle of the second light-shielding portion, and the side of the template layer is completely fitted with the side of the second light-shielding portion.

[0011] Optionally, the reflective layer is formed of a metal material; the width of the first light-shielding portion is equal to the maximum width of the second light-shielding portion; and the orthographic projection of the reflective layer on the substrate is within the range of the orthographic projection of the black matrix on the substrate.

[0012] Optionally, the width of the first light-shielding portion remains unchanged in the light-emitting direction, the thickness of the template layer is equal to the thickness of the second light-shielding portion, the first light-shielding portion partially covers the template layer setting, and the first light-shielding portion and the color filter portion partially overlap on the projection of the substrate; the color filter portion partially covers the first light-shielding portion setting, and the thickness of the color filter portion is greater than or equal to the thickness of the first light-shielding portion.

[0013] Optionally, the light-emitting unit layer includes a plurality of light-emitting units, and the plurality of light-emitting units respectively include a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit; the plurality of color filters respectively include a red filter portion, a green filter portion and a blue filter portion, the red light-emitting unit is arranged correspondingly to the red filter portion, the green light-emitting unit is arranged correspondingly to the green filter portion, and the blue light-emitting unit is arranged correspondingly to the blue filter portion; the display panel also includes a second reflective layer, the second reflective layer is arranged between the black matrix and the encapsulation layer, and the two sides of the second reflective layer are respectively connected to the reflective layer.

[0014] The present application also discloses a display device, comprising a driving circuit and the above-mentioned display panel, wherein the driving circuit is used to drive the display panel to display.

[0015] The present application sets an inclined surface on the side of the template layer by setting a template layer below the color filter part, and sets a reflective layer on the inclined surface. By controlling the inclination angle of the side of the template layer, the inclination angle of the reflective layer is extended from the opening area to the non-opening area, so that the large-angle outgoing light can be directly incident on the reflective layer, while the external ambient incident light cannot be incident on the reflective layer. On the one hand, by utilizing the reflection effect of the reflective layer, the large-angle outgoing light of the light-emitting unit, especially the outgoing light of the light-emitting unit partially emitted on the black matrix, is reflected by the reflective layer, and the light originally absorbed by the black matrix is ​​re-emitted to form a large-angle outgoing light, which can improve the brightness of the display panel and improve the viewing experience under a large viewing angle. On the other hand, the reflective layer is set to be inclined in the direction of the black matrix, so that most of the ambient light cannot be directly incident on the reflective layer, reducing the reflection problem of ambient light, thereby improving the quality of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 is a schematic diagram of a display panel of the present application;

[0018] Figure 2 is a schematic diagram of a display panel according to a second embodiment of the present application;

[0019] Figure 3 is a schematic diagram of a black matrix of a second embodiment of the present application;

[0020] Figure 4 is a schematic diagram of a display panel according to a third embodiment of the present application;

[0021] Figure 5 is a schematic diagram of another display panel of the third embodiment of the present application

[0022] Figure 6 is a schematic diagram of a display device of the present application.

[0023] Among them, 100, display panel; 101, opening area; 102, non-opening area; 110, substrate; 120, light-emitting unit layer; 121, red light-emitting unit; 122, green light-emitting unit; 123, blue light-emitting unit; 130, encapsulation layer; 131, first inorganic encapsulation layer; 132, organic encapsulation layer; 133, second inorganic encapsulation layer; 140, color filter layer; 141, color filter part; 142, red filter part; 143, green filter part; 144, blue filter part; 150, black matrix; 151, first shading part; 152, second shading part; 160, template layer; 170, reflection layer; 171, second reflection layer; 200, display device; 210, driving circuit. DETAILED DESCRIPTION

[0024] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0025] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "multiple" means two or more. In addition, the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. indicating orientation or positional relationships are described based on the orientation or relative positional relationships shown in the accompanying drawings, and are only for the convenience of describing the simplified description of the present application, rather than indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0026] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0027] Figure 1 is a schematic diagram of the display panel of the present application, see Figure 1 As shown, the present application discloses a display panel 100 , which includes an opening area 101 and a non-opening area 102 .

[0028] The display panel 100 includes a substrate 110, a light-emitting unit layer 120, an encapsulation layer 130 and a color filter layer 140; the light-emitting unit layer 120 is disposed on the substrate 110; the encapsulation layer 130 is disposed on the light-emitting unit layer 120; the color filter layer 140 is disposed on the encapsulation layer 130; wherein the color filter layer 140 includes a black matrix 150 and a plurality of color filter portions 141, the black matrix 150 is disposed in the non-opening area 102, and the color filter portion 141 is disposed in the opening area 101;

[0029] The display panel 100 also includes a template layer 160 and a reflective layer 170. The template layer 160 is arranged in the opening area 101 and below the color filter portion 141. The template layer 160 is formed of a light-transmitting material. In the same opening area 101, the width of the template layer 160 gradually decreases along the light-emitting direction, and the side surface of the template layer 160 is an inclined surface. The reflective layer 170 is used to reflect light. The reflective layer 170 is arranged on the inclined surface of the template layer 160, and the angle formed between the reflective layer 170 and the bottom surface of the template layer 160 is an acute angle or a right angle.

[0030] The present application arranges an inclined surface on the side of the template layer 160 by arranging the template layer 160 below the color filter portion 141, and arranges a reflective layer 170 on the inclined surface. By controlling the inclination angle of the side of the template layer 160, the inclination angle of the reflective layer 170 is extended from the opening area 101 to the non-opening area 102, so that the large-angle outgoing light can be directly incident on the reflective layer 170, while the external ambient incident light cannot be incident on the reflective layer 170. On the one hand, by utilizing the reflection effect of the reflective layer 170, the large-angle outgoing light of the light-emitting unit, especially the outgoing light of the light-emitting unit partially emitted to the black matrix 150, is reflected by the reflective layer 170, and the light originally absorbed by the black matrix 150 is re-emitted to form a large-viewing angle outgoing light, which can improve the brightness of the display panel 100 and improve the viewing experience under a large viewing angle. On the other hand, the reflective layer 170 is disposed to be inclined toward the black matrix 150 , so that most of the ambient light cannot directly enter the reflective layer 170 , thereby reducing the reflection problem of the ambient light and improving the quality of the display panel 100 .

[0031] Among them, the opening area 101 generally refers to the position of the color filter 141. When displaying, the opening area 101 forms an outgoing light, and a region that can display multiple colors roughly corresponds to the position where the black matrix 150 is hollowed out. The color filter 141 is respectively arranged at the hollow position of the black matrix 150. The non-opening area 102 is the position corresponding to the black matrix 150, which does not have an outgoing light when displayed and is displayed as a black area. Generally speaking, the opening area 101 and the non-opening area 102 are both located in the display area of ​​the display panel 100. According to the sub-pixel area, the display panel 100 can be divided into a plurality of opening areas 101 and non-opening areas 102, each sub-pixel area includes a sub-pixel, and three sub-pixels form a pixel. In a sub-pixel area, the middle part is the opening area 101, and the non-opening area 102 is arranged around the opening area 101. The black matrix 150 arranged in the non-opening area 102 is used to separate two adjacent sub-pixels. The corresponding template layer 160 is located in the opening area 101 and below the color filter 141.

[0032] The present application uses the template layer 160 to adjust the tilt angle of the reflective layer 170. Compared with the method of adjusting the tilt angle of the side of the color filter 141, first, it does not affect the process sequence of the color filter 141. It is not necessary to form the color filter 141 first and then form the black matrix 150. After using the template layer 160, the black matrix 150 can be formed first and then the color filter 141, thereby reducing the influence of the black matrix 150 on the color filter 141. Secondly, the template layer 160 has a richer material selection and more process technology options, which is more conducive to avoiding the disadvantages of choosing the color filter 141 as an inclined surface.

[0033] For example, the template layer 160 may be selected to be a color filter material, and together with the corresponding color filter portion 141 , form a double-layer color filter layer 140 .

[0034] Figure 2 is a schematic diagram of a display panel of the second embodiment of the present application, see Figure 2 As shown, the present application discloses another display panel 100, which includes a substrate 110, a light-emitting unit layer 120, an encapsulation layer 130 and a color filter layer 140. Compared with the previous embodiment, the same points are not repeated here, and the difference is that the light-transmitting material of the template layer 160 is a color filter material.

[0035] Specifically, the template layer 160 is disposed between the color filter portion 141 and the encapsulation layer 130, and both sides of the template layer 160 are respectively connected to the side surfaces of the black matrix 150. The template layer 160 is disposed in the same layer as the black matrix 150 and is surrounded by the black matrix 150. Each opening area 101 is provided with a template layer 160, and four sides of the template layer 160 are respectively provided with inclined surfaces, and reflective layers 170 are respectively disposed on the inclined surfaces, and the reflective layers 170 are disposed along the inclined surfaces.

[0036] In this solution, a double-layer color filter material is provided on the color filter layer 140, a layer of color filter material close to the substrate 110 forms the template layer 160, and the other layer forms the color filter portion 141. In the same opening area 101, the color of the template layer 160 is consistent with the color of the color filter portion 141. By using the embossing technology to form an inclined surface with the inclined angle required by the present application on the template layer 160, although the template layer 160 also has the filtering property, the main purpose of the design of this solution is to use the inclined surface of the template layer 160 to form the required reflective layer 170, and adjust the inclined angle of the reflective layer 170 to the required angle. And at the same opening area 101 position, the color of the template layer 160 is consistent with the color of the color filter portion 141, forming a double-layer filtering effect. The design of the template layer 160 does not affect the performance of the upper color filter portion 141, and realizes the angle adjustment of the reflective layer 170.

[0037] The reflective layer 170 material can be formed of metal materials, such as silver metal materials, copper metal materials and aluminum metal materials. The metal material has a high reflectivity and can reflect most of the light incident on the reflective layer 170. The metal material also has good ductility. When the side of the color filter portion 141 is inclined, the film layer of the reflective layer 170 formed by the metal material is not prone to cracks.

[0038] Specifically, the orthographic projection of the reflective layer 170 on the substrate 110 is within the range of the orthographic projection of the black matrix 150 on the substrate 110 .

[0039] In this solution, the reflective layer 170 is also covered by the black matrix 150. In the direction from the light-emitting side to the substrate 110, the reflective layer 170 is completely blocked by the black matrix 150. On the one hand, it prevents external ambient light from directly incident on the reflective layer 170. On the other hand, even if there is ambient light incident on the reflective layer 170, this part of the ambient light is relatively incident at a large angle, and has less interference with the display panel 100.

[0040] In the same opening area 101, the orthographic projection of the template layer 160 on the substrate 110 is located within the orthographic projection range of the color filter portion 141 on the substrate 110. The orthographic projection of the template layer 160 on the substrate 110 overlaps with the orthographic projection of the black matrix 150 on the substrate 110. The side of the template layer 160 is also blocked by the black matrix 150.

[0041] Specifically, the angle formed by the reflective layer 170 and the bottom surface of the template layer 160 is between 40 and 80 degrees. In this embodiment, the film layer on the side of the template layer 160 can be sacrificed and the required tilt angle can be formed by a patterning process.

[0042] Specifically, in the same non-opening area 102, the width of the black matrix 150 gradually increases along the light emitting direction, one side of the reflective layer 170 contacts the side of the template layer 160, and the other side of the reflective layer 170 contacts the side of the black matrix 150. The inclination angle of the black matrix 150 is consistent with the inclination angle of the template layer 160. The side of the black matrix 150 is inclined inward, and the side of the template layer 160 is inclined outward to form a complementary relationship. The reflective layer 170 is formed between the template layer 160 and the black matrix 150, and the angle formed by the reflective layer 170 and the bottom surface of the black matrix 150 is an obtuse angle, and the angle formed by the reflective layer 170 and the bottom surface of the template layer 160 is an acute angle.

[0043] The process steps in this embodiment may include forming a template layer 160 on the encapsulation layer 130, forming an inclined surface on the side of the template layer 160, and forming a reflective layer 170 on the inclined surface. The reflective layer 170 may be patterned so that the reflective layer 170 is only disposed on the inclined surface. Next, a black matrix 150 is formed in the non-opening area 102, that is, a black matrix 150 is formed between adjacent template layers 160. The thickness of the black matrix 150 is greater than the thickness of the template layer 160. After the black matrix 150 is formed, the step of completing the color filter 141 is completed.

[0044] The reflective layer 170 can be patterned so that the reflective layer 170 only covers the side surface of the color filter 141. Relatively speaking, when all the light-emitting units are white light-emitting units, a patterning process can be added to remove the reflective layer 170 on the bottom surface of the black matrix 150. When the light-emitting units are red, green, and blue light-emitting units 123, a patterning process can be saved to retain the reflective layer 170 on the bottom surface of the black matrix 150.

[0045] Specifically, the light-emitting unit layer 120 includes a plurality of light-emitting units, and the light-emitting units are arranged in the opening area 101, and the light-emitting units are white light-emitting units. In this embodiment, the emitted light emitted by the light-emitting units is all white. When a reflective layer 170 is also provided at the bottom of the black matrix 150, the reflective layer 170 easily reflects the emitted light of the light-emitting unit to the adjacent light-emitting unit. If the adjacent light-emitting unit does not emit light, light leakage will occur. This embodiment is directed to an organic light-emitting display panel 100 that mainly emits white light, and for an organic light-emitting display panel 100 that emits RGB color light, the patterning process of the reflective layer 170 can also be omitted.

[0046] In another embodiment, the light-emitting unit layer 120 includes a plurality of light-emitting units, and the plurality of light-emitting units respectively include a red light-emitting unit 121, a green light-emitting unit 122 and a blue light-emitting unit 123; the plurality of color filter portions 141 respectively include a red filter portion 142, a green filter portion 143 and a blue filter portion 144, the red light-emitting unit 121 is arranged corresponding to the red filter portion 142, the green light-emitting unit 122 is arranged corresponding to the green filter portion 143, and the blue light-emitting unit 123 is arranged corresponding to the blue filter portion 144; the display panel 100 also includes a second reflective layer 171, the second reflective layer 171 is arranged between the black matrix 150 and the encapsulation layer 130, and the two sides of the second reflective layer 171 are respectively connected to the reflective layer 170.

[0047] In this solution, since the red light emitting unit 121 emits red light, it is difficult to emit from the adjacent green filter portion 143 or blue filter portion 144 even under the reflection effect of the second reflective layer 171, thereby avoiding light leakage when the adjacent light emitting unit is not emitting light.

[0048] Figure 3 is a schematic diagram of a black matrix of the second embodiment of the present application, see Figure 3As shown, in each of the non-opening areas 102, the black matrix 150 includes a first light-shielding portion 151 and a second light-shielding portion 151, the first light-shielding portion 151 is arranged on the second light-shielding portion 151, the width of the second light-shielding portion 151 gradually increases along the light-emitting direction, the second light-shielding portion 151 is an inverted trapezoid, and the reflective layer 170 is arranged on the side of the second light-shielding portion 151; the side inclination angle of the template layer 160 is consistent with the side inclination angle of the second light-shielding portion 151, and the side of the template layer 160 is completely fitted with the side of the second light-shielding portion 151.

[0049] The black matrix 150 in each non-opening area 102 is double-layered, and a highly efficient and stable light shielding effect is achieved by using a stacked design of a second light shielding portion 151 and a first light shielding portion 151. The first light shielding portion 151 is mainly located between adjacent color filter portions 141, and the second light shielding portion 151 is located between adjacent template layers 160.

[0050] Specifically, the width of the first light shielding portion 151 is constant in the light emitting direction, the thickness of the color filter portion 141 is greater than the thickness of the first light shielding portion 151, the first light shielding portion 151 partially covers the template layer 160, and the first light shielding portion 151 and the template layer 160 partially overlap on the projection of the substrate 110. The thickness of the second light shielding portion 151 is consistent with the thickness of the template layer 160, and the maximum width of the second light shielding portion 151 is equal to the width of the first light shielding portion 151. Specifically, the orthographic projection of the reflective layer 170 on the substrate 110 is within the orthographic projection range of the black matrix 150 on the substrate 110.

[0051] In this solution, the first light shielding portion 151 partially covers the color filter portion 141, so that the reflective layer 170 is also covered by the first light shielding portion 151. In the direction from the light output side to the substrate 110, the reflective layer 170 is completely blocked by the first light shielding portion 151. On the one hand, it avoids the external ambient light from directly incident on the reflective layer 170. On the other hand, even if there is ambient light incident on the reflective layer 170, this part of the ambient light is relatively large-angle incident light, and the interference to the display panel 100 is relatively small.

[0052] Figure 4 is a schematic diagram of a display panel of the third embodiment of the present application, see Figure 4 As shown, the present application also discloses a display panel 100, which includes a substrate 110, a light-emitting unit layer 120, an encapsulation layer 130 and a color filter layer 140. The same points as the previous embodiment are not repeated here, except that the light-transmitting material of the template layer 160 is an organic encapsulation material layer.

[0053] Specifically, the template layer 160 is disposed between the color filter portion 141 and the encapsulation layer 130, and both sides of the template layer 160 are respectively connected to the side surfaces of the black matrix 150. The template layer 160 is disposed in the same layer as the black matrix 150 and is surrounded by the black matrix 150. Each opening area 101 is provided with a template layer 160, and four sides of the template layer 160 are respectively provided with inclined surfaces, and reflective layers 170 are respectively disposed on the inclined surfaces, and the reflective layers 170 are disposed along the inclined surfaces.

[0054] In this solution, the template layer 160 can be selected to be formed of a transparent organic material, such as an organic packaging material layer. Due to the process of the color filter material, it is difficult to form a large angle inclined surface on the color filter portion 141 or the side of the template layer 160 formed by the color filter material, such as an angle of more than 80 degrees or close to 90 degrees, and it cannot be formed using the color filter material. In this embodiment, an organic material layer can be used to achieve a bottom surface of the reflective layer 170 and the template layer 160 between 80 and 90 degrees. It can be understood that the 90 degrees here can be 90 degrees or can be infinitely close to 90 degrees. Among them, it is closer to a vertical state, so that more angles of light from the light-emitting unit can be reflected by the reflective layer 170.

[0055] In another embodiment, in addition to organic materials, the template layer 160 may also be made of silicon nitride with a high nitrogen content, which may have a high refractive index. The reflective layer 170 may be made of an inorganic material with a lower refractive index, such as silicon oxide or silicon nitride with a low nitrogen content, so that the light emitted by the light-emitting unit is totally reflected in the cross-sections of the two materials.

[0056] Figure 5 is a schematic diagram of another display panel of the third embodiment of the present application, see Figure 5 As shown, the present application also discloses a display panel 100, which includes a substrate 110, a light-emitting unit layer 120, an encapsulation layer 130 and a color filter layer 140. Compared with the previous embodiment, the same points are not repeated here, and the difference is that the template layer 160 is the organic encapsulation layer 132 in the encapsulation layer 130.

[0057] Specifically, the encapsulation layer 130 includes a first inorganic encapsulation layer 131, an organic encapsulation layer 132, and a second inorganic encapsulation layer 133, wherein the organic encapsulation layer 132 is disposed between the first inorganic encapsulation layer 131 and the second inorganic encapsulation layer 133. In this solution, a plurality of grooves are provided in the organic encapsulation layer 132 corresponding to the non-opening area 102, and the second inorganic encapsulation layer 133 covers the plurality of grooves, and the depth of the groove is greater than the thickness of the second inorganic encapsulation layer 133, and a groove is formed at the position corresponding to the groove of the second inorganic encapsulation layer 133. The reflective layer 170 is formed on the side of the groove or extends to the bottom of the groove. In the subsequent process of the color filter layer 140, the groove is filled with the black matrix 150 to form a black matrix 150 with a sunken design.

[0058] In this solution, the organic encapsulation layer 132 in the encapsulation layer 130 is used to set a groove in the corresponding non-opening area 102, and the organic encapsulation layer 132 is etched by a patterning process to form a groove, and the side wall and the ground of the groove meet the inclination angle in the above embodiment, which can be between 40 degrees and 90 degrees. On the one hand, this solution can make the black matrix 150 sink, and on the other hand, the reflective layer 170 is set by using the sunken black matrix 150, and the inclination angle of the reflective layer 170 can be controlled. And from another perspective, the area of ​​the reflective layer 170 is increased or the reflective layer 170 is moved away from the color filter part 141, so that the reflective layer 170 is closer to the light-emitting unit, so that more large-angle light can be reflected. While increasing the brightness of the display panel 100, the viewing experience under a wide viewing angle can also be improved.

[0059] Figure 6 is a schematic diagram of the display device of the present application, see Figure 6 As shown, the present application further discloses a display device 200 , which includes a driving circuit 210 and a display panel 100 in any one of the above embodiments, wherein the driving circuit is used to drive the display panel 100 to display.

[0060] The present application arranges an inclined surface on the side of the template layer 160 by arranging the template layer 160 below the color filter portion 141, and arranges a reflective layer 170 on the inclined surface. By controlling the inclination angle of the side of the template layer 160, the inclination angle of the reflective layer 170 is extended from the opening area 101 to the non-opening area 102, so that the large-angle outgoing light can be directly incident on the reflective layer 170, while the external ambient incident light cannot be incident on the reflective layer 170. On the one hand, by utilizing the reflection effect of the reflective layer 170, the large-angle outgoing light of the light-emitting unit, especially the outgoing light of the light-emitting unit partially emitted to the black matrix 150, is reflected by the reflective layer 170, and the light originally absorbed by the black matrix 150 is re-emitted to form a large-viewing angle outgoing light, which can improve the brightness of the display panel 100 and improve the viewing experience under a large viewing angle. On the other hand, the reflective layer 170 is disposed to be inclined toward the black matrix 150 , so that most of the ambient light cannot directly enter the reflective layer 170 , thereby reducing the reflection problem of the ambient light and improving the quality of the display panel 100 .

[0061] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0062] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A display panel, comprising an opening area and a non-opening area, characterized in that: The display panel comprises a substrate, a light-emitting unit layer, an encapsulation layer and a color filter layer; the light-emitting unit layer is arranged on the substrate; the encapsulation layer is arranged on the light-emitting unit layer; the color filter layer is arranged on the encapsulation layer; wherein the color filter layer comprises a black matrix and a plurality of color filter parts, the black matrix is ​​arranged in the non-opening area, and the color filter part is arranged in the opening area; The display panel further comprises a template layer and a reflective layer, wherein the template layer is arranged in the opening area and below the color filter portion; the template layer is formed of a light-transmitting material; In the same opening area, the width of the template layer gradually decreases along the light emitting direction, and the side surface of the template layer is an inclined surface; The reflective layer is used to reflect light, and the reflective layer is arranged on the inclined surface of the template layer, and the angle between the reflective layer and the bottom surface of the template layer is an acute angle or a right angle; In each of the non-opening areas, the black matrix includes a first light shielding portion and a second light shielding portion, the first light shielding portion is arranged on the second light shielding portion, the width of the second light shielding portion gradually increases along the light emitting direction, the second light shielding portion is an inverted trapezoid, and the reflective layer is arranged on the side of the second light shielding portion; the side inclination angle of the template layer is consistent with the side inclination angle of the second light shielding portion, and the side of the template layer is completely in contact with the side of the second light shielding portion; The light-emitting unit layer includes a plurality of light-emitting units, and the plurality of light-emitting units include a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit respectively; the plurality of color filters include a red filter portion, a green filter portion and a blue filter portion respectively, the red light-emitting unit is arranged corresponding to the red filter portion, the green light-emitting unit is arranged corresponding to the green filter portion, and the blue light-emitting unit is arranged corresponding to the blue filter portion; the display panel also includes a second reflective layer, the second reflective layer is arranged between the black matrix and the encapsulation layer, and the two sides of the second reflective layer are respectively connected to the reflective layer.

2. The display panel according to claim 1, characterized in that: The angle formed by the reflective layer and the bottom surface of the template layer is between 40 degrees and 90 degrees.

3. The display panel according to claim 1, characterized in that: The light-transmitting material includes a transparent organic material; The template layer is arranged between the color filter portion and the encapsulation layer, and two sides of the template layer are respectively connected to the side surfaces of the black matrix; In the same non-opening area, the width of the black matrix gradually increases along the light emitting direction, one side of the reflective layer contacts the side of the template layer, and the other side of the reflective layer contacts the side of the black matrix.

4. The display panel according to claim 3, characterized in that: In the same opening area, the orthographic projection of the template layer on the substrate is located within the orthographic projection range of the color filter portion on the substrate.

5. The display panel according to claim 3, characterized in that: The light-transmitting material includes a color filter material, and in the same opening area, the color of the template layer is consistent with the color of the color filter portion.

6. The display panel according to claim 1, characterized in that: The reflective layer is formed of metal material; The width of the first light shielding portion is equal to the maximum width of the second light shielding portion; The orthographic projection of the reflective layer on the substrate is within the range of the orthographic projection of the black matrix on the substrate.

7. The display panel according to claim 1, characterized in that: The width of the first light shielding portion is constant in the light emitting direction, the thickness of the template layer is equal to the thickness of the second light shielding portion, the first light shielding portion partially covers the template layer, and the first light shielding portion and the color filter portion partially overlap on the projection of the substrate; The color filter portion partially covers the first light shielding portion, and the thickness of the color filter portion is greater than or equal to the thickness of the first light shielding portion.

8. A display device, characterized in that: It comprises a driving circuit and the display panel according to any one of claims 1 to 7, wherein the driving circuit is used to drive the display panel to display.

Citation Information

Patent Citations

  • Display panel and display device

    CN116828920A

  • Display panel, manufacturing method thereof and display device

    CN116828926A