Display panel and display device

Abstract

The embodiment of the utility model discloses a display panel and a display device. The display panel comprises a plurality of light-emitting units and a prism structure layer, the prism structure layer is arranged on the light-emitting side of the light-emitting unit; the side, close to the light-emitting unit, of the prism structure layer comprises a plurality of prisms. According to the technical scheme, the side, close to the light-emitting unit, of the prism structure layer comprises the multiple prisms, light emitted by the light-emitting unit is totally reflected, refracted and / or accumulated at the positions of the multiple prisms of the prism structure layer, more light emitted by the light-emitting unit in all directions is emitted out towards the center of the light-emitting unit in a concentrated mode, and the light emitting efficiency is improved. The light utilization rate is improved, so that the light-emitting brightness of the light-emitting units is closer, the colors of the light-emitting units with the same light-emitting color are closer, the display uniformity of a display product is improved, and the display effect is improved.

Description

Technical Field

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

[0002] With the continuous improvement of the degree of social informatization, the organic light-emitting diode (OLED) display technology has made great progress. OLED display technology has the advantages of simple structure, fast response speed, self-luminescence without backlight, wide viewing angle, high contrast and wide operating temperature range, and has been widely recognized by the market.

[0003] However, in OLED display technology, the light-emitting units are independent of each other, and the difference in quality of each unit leads to a large uncertainty in the display uniformity, which affects the display effect of the product. Utility Model Content

[0004] The utility model provides a display panel and a display device, so as to reduce the loss rate of light, improve the display uniformity of display products, and enhance the display effect.

[0005] According to one aspect of the utility model, a display panel is provided, the display panel comprising: a plurality of light-emitting units and a prism structure layer;

[0006] The prism structure layer is arranged on the light emitting side of the light emitting unit;

[0007] The prism structure layer includes a plurality of prisms on a side close to the light-emitting unit;

[0008] The surface of the prism structure layer away from the light-emitting side is a plane.

[0009] Optionally, the multiple prisms of the prism structure layer are arranged in an array, and the heights of the prisms are the same.

[0010] Optionally, in the prism structure layer, a plurality of prisms are correspondingly arranged on the light-emitting side of each light-emitting unit.

[0011] Optionally, the prism structure layer includes a main prism and a connecting prism, the bottom surface of the main prism is parallel to the light emitting surface of the light emitting unit, the connecting prism is located on the side of the main prism, and at least part of the connecting prism connects adjacent main prisms.

[0012] Optionally, the display panel further includes: an adhesive layer and a cover plate;

[0013] The bonding layer is located between the cover plate and the prism structure layer, and the prism structure layer is bonded to the cover plate through the bonding layer.

[0014] Optionally, the display panel further includes: at least two prism structure layers, and the at least two prism structure layers are stacked along the thickness direction of the display panel.

[0015] Optionally, an angle between the side surface of the prism and the light emitting surface of the light emitting unit is greater than or equal to 27.5° and less than or equal to 52.5°.

[0016] Optionally, the light-emitting unit includes a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit; the angles formed by the side surface of the prism and the light-emitting surface of the red light-emitting unit, the light-emitting surface of the green light-emitting unit and the light-emitting surface of the blue light-emitting unit are all equal.

[0017] Optionally, the prism is in the shape of a pyramid.

[0018] According to another aspect of the present invention, a display device is provided. The display device includes the above-mentioned display panel.

[0019] According to the technical solution of the embodiment of the utility model, a display panel is provided including a plurality of light-emitting units and a prism structure layer, wherein the prism structure layer is provided on the light-emitting side of the light-emitting unit; the prism structure layer includes a plurality of prisms on a side close to the light-emitting unit, and light emitted by the light-emitting unit undergoes total reflection, refraction and / or light accumulation at the plurality of prisms of the prism structure layer, so that light emitted in all directions by the light-emitting unit is more concentrated toward the center of the light-emitting unit, thereby improving the utilization rate of light, and thereby making the light-emitting brightness of each light-emitting unit closer, and the color of light-emitting units with the same light-emitting color closer, thereby improving the optical uniformity of the display product and enhancing the optical performance of the display product.

[0020] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 is a structural schematic diagram of a display panel provided according to an embodiment of the utility model;

[0023] Figure 2 is a schematic diagram of the prism arrangement of the prism structure layer provided according to an embodiment of the utility model;

[0024] Figure 3 is a schematic structural diagram of a prism structure layer provided according to an embodiment of the utility model;

[0025] Figure 4 is a structural schematic diagram of another display panel provided according to an embodiment of the utility model;

[0026] Figure 5 is a structural schematic diagram of another display panel provided according to an embodiment of the utility model;

[0027] Figure 6 is a schematic structural diagram of another display panel provided according to an embodiment of the utility model;

[0028] Figure 7 It is a structural schematic diagram of a display device provided according to an embodiment of the utility model. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] Figure 1 Schematic diagram of a display panel provided according to an embodiment of the present utility model. Figure 1 As shown, the display panel includes: a plurality of light-emitting units 20 and a prism structure layer 10; the prism structure layer 10 is arranged on the light-emitting side of the light-emitting unit 20; the side of the prism structure layer 10 close to the light-emitting unit 20 includes a plurality of prisms 101; the surface of the prism structure layer 10 away from the light-emitting side is a plane.

[0032] In an embodiment of the utility model, the display panel includes a plurality of light-emitting units 20 and a prismatic structure layer 10. The light-emitting unit 20 may include an organic light-emitting device, such as an OLED; it may also include an inorganic light-emitting device, such as a micro light-emitting diode Micro-LED. When the light-emitting unit 20 includes an OLED, each light-emitting unit 20 may include an anode, a cathode, and a light-emitting functional layer disposed between the anode and the cathode. The light-emitting functional layer includes a hole injection layer, a hole transport layer, a light-emitting layer, and an electron transport layer sequentially disposed on the anode. Optionally, the display panel may include light-emitting units 20 of different colors, for example, the display panel may include a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit.

[0033] The prism structure layer 10 is arranged on the light-emitting side of the light-emitting unit 20, and the side of the prism structure layer 10 close to the light-emitting unit 20 includes a plurality of prisms 101. Since the light-emitting units 20 in the display panel are independent of each other, uncontrollable factors in some process processes of the preparation process will inevitably cause display differences between different light-emitting units, for example, there are large differences in the amount of light emitted from different light-emitting units to their respective centers, resulting in differences in brightness of different light-emitting units and / or differences in luminous colors between the same light-emitting units. By setting a plurality of prism 101 structures in the prism structure layer 10, relying on its optical properties such as total reflection, refraction and light accumulation, the light emitted from the light-emitting unit 20 that is deviated from the center is concentrated and emitted to the center of the light-emitting unit 20, so that the amount of light emitted from different light-emitting units 20 to their respective centers is more consistent, thereby making the luminous brightness of each light-emitting unit 20 more consistent, and the color of the same light-emitting unit is consistent, thereby improving the utilization efficiency of light. Through a plurality of prisms 101, the emitted light of the light-emitting unit 20 is evenly distributed to each area, improving the optical uniformity of the display product, so as to achieve the purpose of improving the optical performance of the display product.

[0034] In the embodiment of the utility model, the surface of the prism structure layer 10 connected to the bottom surface of the prism 101 is a plane. The plane may be a mirror structure. The surface of the prism structure layer 10 away from the light-emitting side is set as a plane, so that the bottom surfaces of the multiple prisms 101 in the prism structure layer 10 are located in the same horizontal plane, realizing a regular arrangement of the multiple prisms 101.

[0035] The surface of the prism structure layer 10 away from the light-emitting side is set as a plane, and the bottom surfaces of the multiple prisms 101 in the prism structure layer 10 are located in the same horizontal plane. When the multiple light-emitting units 20 emit light in different directions at the same time, the prisms 101 corresponding to the different light-emitting units 20 evenly distribute the light in different directions to various areas, thereby improving the optical uniformity of the display product. In addition, the surface of the prism structure layer 10 away from the light-emitting side is set as a plane, so that the upper film layer of the prism structure layer 10 away from the light-emitting side is more closely attached to the prism structure layer 10, thereby reducing the thickness of the display panel.

[0036] According to the technical solution of the embodiment of the utility model, a display panel is provided including a plurality of light-emitting units and a prism structure layer, wherein the prism structure layer is provided on the light-emitting side of the light-emitting unit; the prism structure layer includes a plurality of prisms on a side close to the light-emitting unit, and light emitted by the light-emitting unit undergoes total reflection, refraction and / or light accumulation at the plurality of prisms of the prism structure layer, so that light emitted in all directions by the light-emitting unit is more concentrated toward the center of the light-emitting unit, thereby improving the utilization rate of light, and thereby making the light-emitting brightness of each light-emitting unit closer, and the color of light-emitting units with the same light-emitting color closer, thereby improving the optical uniformity of the display product and enhancing the optical performance of the display product.

[0037] Figure 2 Schematic diagram of the prism arrangement of the prism structure layer provided according to an embodiment of the utility model. Figure 2 As shown, the plurality of prisms 101 of the prism structure layer 10 are arranged in an array, and the heights of the prisms 101 are the same.

[0038] In the embodiment of the present invention, the prism structure layer 10 includes a planar structure portion 102 and a prism structure portion. The prism structure portion includes a plurality of prisms 101, and the plurality of prisms 101 are arranged in an array and the heights of the prisms 101 are the same. For example, Figure 2 As shown, the structure of the prism 101 is a triangular prism, the bottom surfaces of the multiple triangular prisms are connected to the planar structure part 102, and the multiple triangular prisms are arranged in an array. The multiple prisms 101 are arranged in an array, so that the prisms 101 are arranged more closely, and the optical properties of the formed prism structure layer 10, such as total reflection, refraction, and light accumulation, are stronger, so as to achieve the purpose of improving the optical performance of the display product.

[0039] The plurality of prisms 101 are arranged in an array and the heights of the prisms 101 are the same. When manufacturing the prism structure layer 10 , the preparation process is simple and the prism structure layer 10 can be easily made thinner.

[0040] Based on the above utility model embodiment technical solution, refer to Figure 1 In the prism structure layer 10 , a plurality of prisms 101 are correspondingly arranged on the light-emitting side of each light-emitting unit 20 .

[0041] In the embodiment of the utility model, a plurality of prisms 101 are correspondingly arranged on the light-emitting side of each light-emitting unit 20. Exemplarily, a 4*4 array of prisms 101 is correspondingly arranged on the light-emitting side of each light-emitting unit 20. The number and arrangement of the prisms 101 corresponding to the light-emitting side of each light-emitting unit 20 are the same, so that the prism structure layer 10 is simple in preparation, and similar optical effects are achieved at the light-emitting units 20 at different positions in the prism structure layer 10.

[0042] Figure 3 is a schematic structural diagram of a prism structure layer provided according to an embodiment of the utility model, Figure 3 It can correspond to the partial structure of the prism structure layer. Figure 3 As shown, the prism structure layer 10 includes a main prism 103 and a connecting prism 104 . The bottom surface of the main prism 103 is parallel to the light emitting surface of the light emitting unit 20 . The connecting prism 104 is located on the side of the main prism 103 . At least part of the connecting prism 104 connects adjacent main prisms 103 .

[0043] In the embodiment of the utility model, the main prism 103 includes but is not limited to a triangular prism and a quadrangular prism. When the main prism 103 is a triangular prism, the main prism 103 includes a bottom surface and three side surfaces, and the three side surfaces are provided with connecting prisms 104. The plurality of main prisms in the prism structure layer 10 are arranged in an array, and adjacent main prisms 103 can be connected by a connecting prism 104, so that the formed prism structure layer 10 is more stable and less susceptible to damage.

[0044] Figure 3 The structure when the main prism 103 is a quadrangular prism and the main prisms 103 are arranged in a 4*4 array is shown. When the main prism 103 is a quadrangular prism, the main prism 103 includes a bottom surface and four side surfaces, and connecting prisms 104 are arranged on the four side surfaces. Adjacent main prisms 103 are connected by connecting prisms 104, so that the formed prism structure layer 10 is more stable.

[0045] In other optional embodiments of the present invention, the main prism 103 may be a polygonal prism, and the configuration and connection relationship of the corresponding connecting prism 104 are similar to those of a triangular prism or a quadrangular prism, which are not limited here.

[0046] Figure 4 FIG. 1 is a schematic diagram of the structure of another display panel provided according to an embodiment of the present utility model. Figure 4 As shown, the display panel further includes: an adhesive layer 30 and a cover plate 40 ; the adhesive layer 30 is located between the cover plate 40 and the prism structure layer 10 , and the prism structure layer 10 is bonded to the cover plate 40 via the adhesive layer 30 .

[0047] In the embodiment of the utility model, the prism structure layer 10 can be made of organic synthetic materials. Generally, organic synthetic materials include synthetic plastics, synthetic fibers and synthetic rubbers. Exemplarily, the prism structure layer 10 can be made of synthetic plastics and formed by single injection molding.

[0048] The display panel further includes an adhesive layer 30 and a cover plate 40, wherein the adhesive layer 30 is located between the cover plate 40 and the prism structure layer 10, and the prism structure layer 10 is bonded to the cover plate 40 through the adhesive layer 30. The adhesive layer 30 may be an adhesive. The prism structure layer 10 is bonded to the cover plate 40 by the adhesive, so that the combination of the prism structure layer 10 and the cover plate 40 is more stable. The adhesive layer is transparent.

[0049] The material of the cover plate 40 can be glass. In other optional embodiments of the utility model, the prism structure layer 10 can also be directly evaporated on the glass cover plate 40. The evaporation process, also known as vacuum evaporation, is a process method in which a coating material is evaporated and gasified by a certain heating evaporation method under vacuum conditions, and the particles fly to the surface of the substrate and condense into a film. Evaporation is an earlier and more widely used vapor deposition technology, which has the advantages of simple film forming method, high film purity and density, and unique film structure and performance.

[0050] Figure 5 FIG. 1 is a schematic diagram of the structure of another display panel provided according to an embodiment of the present utility model. Figure 5 As shown, the display panel further includes: at least two prism structure layers 10, and the at least two prism structure layers 10 are stacked along the thickness direction X of the display panel.

[0051] In the embodiment of the present invention, the display panel may include at least two prism structure layers 10 , and the at least two prism structure layers 10 are stacked along the thickness direction X of the display panel. Figure 5 , two prism structure layers 10 are stacked along the thickness direction X of the display panel. In other optional embodiments of the utility model, the display panel may further include a plurality of prism structure layers 10 stacked along the thickness direction X of the display panel. By providing a plurality of prism structure layers 10, and stacking the plurality of prism structure layers 10 along the thickness direction X of the display panel, the utilization rate of light can be improved, the optical uniformity of the display product can be improved, and the optical performance of the display product can be improved.

[0052] Based on the above utility model embodiment technical solution, refer to Figure 5 As shown, the angle a between the side surface of the prism 101 and the light emitting surface 201 of the light emitting unit 20 is greater than or equal to 27.5° and less than or equal to 52.5°.

[0053] In the embodiment of the utility model, the light emitting surface 201 of the light emitting unit 20 can be a plane. The angle a between the side surface of the prism 101 and the light emitting surface 201 of the light emitting unit 20 is greater than or equal to 27.5° and less than or equal to 52.5°. When the angle between the side surface of a certain prism 101 and the light emitting surface 201 of the light emitting unit 20 is determined, the remaining prisms 101 are also arranged in an array according to the determined angle.

[0054] Based on the above utility model embodiment technical solution, refer to Figure 5 The light-emitting unit 20 includes a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit; the angles formed by the side surface of the prism 101 and the light-emitting surfaces of the red light-emitting unit, the green light-emitting unit and the blue light-emitting unit are all equal.

[0055] Based on the above utility model embodiment technical solution, refer to Figure 1 , the shape of the prism 101 is a pyramid.

[0056] In the embodiment of the utility model, the shape of the prism 101 is a pyramid, that is, the bottom surface of the prism 101 is a triangle or a quadrilateral, one end of each edge of the prism 101 is connected to the end point of the bottom surface, and the other end is connected to a common point to form a pyramid, which can evenly distribute the light emitted from the light-emitting unit 20 to various areas, thereby improving the optical uniformity of the display product.

[0057] Figure 6 FIG. 1 is a schematic diagram of the structure of another display panel provided according to an embodiment of the present utility model. Figure 6 As shown, in an embodiment of the utility model, the display panel includes an array substrate 50, a pixel definition layer 203, a light-emitting device layer, a prism structure layer 10, a bonding layer 30 and a cover plate 40. The prism structure layer 10 includes a plurality of prisms 101 and a planar structure portion 102. The light-emitting device layer includes a plurality of light-emitting units 20, and the light-emitting unit 20 includes an anode 202, a light-emitting layer and a cathode. The pixel definition layer 203 includes a plurality of openings, and the light-emitting layer of the light-emitting unit 20 is arranged in the opening. The array substrate 50 includes an active layer and a metal layer stacked to form a pixel circuit. The pixel circuit can be electrically connected to the anode 202 of the light-emitting unit 20 to provide a driving signal for the light-emitting unit 20.

[0058] Figure 7 Schematic diagram of a display device according to an embodiment of the present utility model. Figure 7 As shown, the display device 200 includes the display panel 100 of any of the above embodiments, and has the beneficial effects of the display panel of any of the above embodiments of the utility model.

[0059] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0060] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A display panel, characterized in that: include: A plurality of light emitting units and a prism structure layer; The prism structure layer is arranged on the light emitting side of the light emitting unit; The prism structure layer includes a plurality of prisms on a side close to the light-emitting unit; The surface of the prism structure layer away from the light-emitting side is a plane.

2. The display panel according to claim 1, characterized in that: The plurality of prisms in the prism structure layer are arranged in an array, and the heights of the prisms are the same.

3. The display panel according to claim 1, characterized in that: In the prism structure layer, a plurality of prisms are correspondingly arranged on the light-emitting side of each light-emitting unit.

4. The display panel according to claim 1, characterized in that: The prism structure layer includes a main prism and a connecting prism. The bottom surface of the main prism is parallel to the light emitting surface of the light emitting unit. The connecting prism is located on the side of the main prism. At least part of the connecting prism connects the adjacent main prisms.

5. The display panel according to claim 1, characterized in that: Also includes: Adhesive layers and cover sheets; The bonding layer is located between the cover plate and the prism structure layer, and the prism structure layer is bonded to the cover plate through the bonding layer.

6. The display panel according to claim 1, characterized in that: Also includes: At least two of the prism structure layers are stacked along the thickness direction of the display panel.

7. The display panel according to claim 1, characterized in that: The included angle between the side surface of the prism and the light emitting surface of the light emitting unit is greater than or equal to 27.5° and less than or equal to 52.5°.

8. The display panel according to claim 7, characterized in that: The light-emitting units include a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit; the angles formed by the side surface of the prism and the light-emitting surfaces of the red light-emitting unit, the green light-emitting unit and the blue light-emitting unit are all equal.

9. The display panel according to any one of claims 1 to 8, characterized in that: The prism is in the shape of a pyramid.

10. A display device, characterized in that: A display panel comprising any one of claims 1 to 9.

Images