Film layer structure of AMOLED screen

Abstract

The utility model relates to a film layer structure of an AMOLED screen. The film layer structure of the AMOLED screen comprises a film material assembly, the film material assembly comprises a hole injection layer, the hole injection layer comprises a first anode sub-layer, a second anode sub-layer and a pixel definition sub-layer, the first anode sub-layer is connected with the pixel definition sub-layer, and the second anode sub-layer is connected with the pixel definition sub-layer; the first anode sub-layer is provided with a plurality of first convex parts which enable the first anode sub-layer to form a wave shape, the pixel definition sub-layer is provided with a plurality of second convex parts which enable the pixel definition sub-layer to form a wave shape, the second anode sub-layer is provided with a plurality of third convex parts which enable the second anode sub-layer to form a wave shape, and the heights and the widths among the first convex parts, the second convex parts and the third convex parts are respectively the same. According to the scheme provided by the invention, the problem of color cast of the AMOLED screen under the condition of low gray scale can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to a film layer structure of an AMOLED screen. Background Art

[0002] At present, the development of smart wearable products is in full swing. Its forms are also diverse, including smart watches, smart bracelets, etc.

[0003] In the related technology, AMOLED screens are commonly used in smart wearable products. In the case of low grayscale, such as grayscale below 68, the surface of the hole injection layer inside the AMOLED screen is relatively smooth and smooth. During the lighting process, the voltage on the surface of the hole injection layer is inconsistent, which causes the AMOLED screen to have color cast problems in the case of low grayscale. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a film layer structure of an AMOLED screen, which can solve the problem of color cast of the AMOLED screen in the case of low gray scale.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] In a first aspect, the present application provides a film layer structure of an AMOLED screen, comprising: a film material component, the film material component comprising a hole injection layer, the hole injection layer comprising a first anode sublayer, a second anode sublayer and a pixel definition sublayer, the first anode sublayer being connected to the pixel definition sublayer, the second anode sublayer being connected to the pixel definition sublayer; the first anode sublayer being provided with a plurality of first convex portions forming a wavy shape, the pixel definition sublayer being provided with a plurality of second convex portions forming a wavy shape, the second anode sublayer being provided with a plurality of third convex portions forming a wavy shape, the heights and widths of the first convex portions, the first convex portions, the second convex portions and the third convex portions being the same respectively.

[0007] The film material assembly further includes a current layer, and the current layer is arranged on the pixel definition sublayer.

[0008] The film material assembly further includes a hole transport layer, and the hole transport layer is arranged on the current layer.

[0009] The film material assembly further includes a first light-emitting layer, and the first light-emitting layer is arranged on the hole transport layer.

[0010] The film material assembly also includes a grounding layer, and the grounding layer is arranged on the first light-emitting layer.

[0011] The film material assembly further includes a second light-emitting layer, and the second light-emitting layer is arranged on the current layer.

[0012] The hole transport layer and the first light emitting layer are parallel to each other.

[0013] The first protrusion is in a U shape.

[0014] The second protrusion is in a U shape.

[0015] The third protrusion is in a U shape.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] By providing the first convex part, the second convex part and the third convex part in a wavy shape, the surface of the entire hole injection layer is made rougher, the continuity of the hole injection layer is changed, and the lateral resistance of the hole injection layer changes, thereby causing the lateral current to change. At the same time, the width and height of the first convex part, the second convex part and the third convex part are respectively the same, that is, the cross-sectional area is the same, so that the resistance of each part of the hole injection layer is the same, thereby ensuring that the voltage of each part of the hole injection layer is the same, thereby solving the problem of color cast in the case of low grayscale of the AMOLED screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0019] Figure 1 It is a schematic structural diagram of the film structure of the AMOLED screen in one embodiment of the utility model;

[0020] Figure 2 It is a schematic structural diagram of a hole injection layer in one embodiment of the utility model. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0022] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0023] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] Smart wearable products generally use AMOLED screens. In the case of low grayscale, such as grayscale below 68, the surface of the hole injection layer inside the AMOLED screen is relatively smooth and smooth. During the lighting process, the voltage on the surface of the hole injection layer is inconsistent, resulting in color cast problems in the AMOLED screen at low grayscale.

[0025] In view of the above problems, the embodiments of the present application provide a film layer structure of an AMOLED screen, which can solve the problem of color cast of the AMOLED screen in the case of low gray scale.

[0026] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0027] See also Figure 1 and Figure 2 A film layer structure of an AMOLED screen includes: a film material component 100, the film material component 100 includes a hole injection layer 110, the hole injection layer 110 includes a first anode sublayer 111, a second anode sublayer 112 and a pixel definition sublayer 113, the first anode sublayer 111 is connected to the pixel definition sublayer 113, and the second anode sublayer 112 is connected to the pixel definition sublayer 113; the first anode sublayer 111 is provided with a plurality of first convex portions 111a to form a wavy shape, the pixel definition sublayer 113 is provided with a plurality of second convex portions 113a to form a wavy shape, and the second anode sublayer 112 is provided with a plurality of third convex portions 112a to form a wavy shape, and the heights and widths of the first convex portions 111a, the second convex portions 113a and the third convex portions 112a are respectively the same.

[0028] It should be noted that the first anode sublayer 111 and the second anode sublayer 112 are both anodes, and the pixel definition sublayer 113 defines and limits the size and shape of the pixel. Further, the entire hole injection layer 110 promotes the injection of holes from the anode into the light-emitting layer, improves the injection efficiency of holes, and at the same time blocks the movement of electrons to the shape, reduces the recombination of electrons and holes, thereby improving the luminous efficiency and stability of the device. Further, the shape of the first convex portion 111a is U-shaped, the shape of the second convex portion 113a is U-shaped, and the shape of the third convex portion 112a is U-shaped. Multiple first convex portions 111a are combined to form a wave. Similarly, multiple second convex portions 113a are combined to form a wave, and multiple third convex portions 112a are combined to form a wave. In this way, by providing the wavy first convex portion 111a, the second convex portion 113a and the third convex portion 112a, the surface of the entire hole injection layer 110 is made rougher, which changes the continuity of the hole injection layer 110, thereby causing the lateral resistance of the hole injection layer 110 to change, thereby causing the lateral current to change. At the same time, the width and height of the first convex portion 111a, the second convex portion 113a and the third convex portion 112a are the same, that is, the cross-sectional area is the same, so that the resistance of each part of the hole injection layer 110 is the same, thereby ensuring that the voltage of each part of the hole injection layer 110 is the same, thereby solving the problem of color cast in the case of low grayscale of the AMOLED screen. Among them, Figure 2 It is a partial structure of the hole injection layer 110.

[0029] See also Figure 1 In one embodiment, the film assembly 100 further includes a current layer 120 , and the current layer 120 is disposed on the pixel definition sublayer 113 .

[0030] It should be noted that the current layer 120 is the crosstalk current between pixels, that is, in an AMOLED display, the current of one pixel may leak into an adjacent pixel, causing the brightness and color of the adjacent pixel to change, thereby affecting the display effect.

[0031] See also Figure 1 In one embodiment, the film assembly 100 further includes a hole transport layer 130 , and the hole transport layer 130 is disposed on the current layer 120 .

[0032] It should be noted that the hole transport layer 130 is a red hole transport layer.

[0033] See also Figure 1 In one embodiment, the film assembly 100 further includes a first light emitting layer 140, and the first light emitting layer 140 is disposed on the hole transport layer 130. Specifically, the hole transport layer 130 and the first light emitting layer 140 are parallel to each other.

[0034] It should be noted that the first light-emitting layer 140 is a red light-emitting layer, which realizes red light emission in combination with a red hole transport layer.

[0035] See also Figure 1 In one embodiment, the film assembly 100 further includes a grounding layer 150, and the grounding layer 150 is disposed on the first light-emitting layer 140. The voltage of the grounding layer 150 is 0V.

[0036] See also Figure 1 In one embodiment, the film material assembly 100 further includes a second light-emitting layer 160 , and the second light-emitting layer 160 is disposed on the current layer 120 .

[0037] It should be noted that the second light-emitting layer 160 is a blue light-emitting layer, which is used to realize blue light emission in combination with the blue hole transport layer.

[0038] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of the various embodiments have their own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily required for the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0039] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A film structure of an AMOLED screen, characterized in that: include: A film material assembly, the film material assembly comprising a hole injection layer, the hole injection layer comprising a first anode sublayer, a second anode sublayer and a pixel definition sublayer, the first anode sublayer is connected to the pixel definition sublayer, and the second anode sublayer is connected to the pixel definition sublayer; The first anode sublayer is provided with a plurality of first protrusions to form a wavy shape, the pixel definition sublayer is provided with a plurality of second protrusions to form a wavy shape, and the second anode sublayer is provided with a plurality of third protrusions to form a wavy shape, and the heights and widths of the first protrusions, the second protrusions and the third protrusions are respectively the same.

2. The film layer structure of the AMOLED screen according to claim 1, characterized in that: The film material assembly further includes a current layer, and the current layer is arranged on the pixel definition sublayer.

3. The film layer structure of the AMOLED screen according to claim 2, characterized in that: The film material assembly further includes a hole transport layer, and the hole transport layer is arranged on the current layer.

4. The film layer structure of the AMOLED screen according to claim 3, characterized in that: The film material assembly further includes a first light-emitting layer, and the first light-emitting layer is arranged on the hole transport layer.

5. The film layer structure of the AMOLED screen according to claim 4, characterized in that: The film material assembly also includes a grounding layer, and the grounding layer is arranged on the first light-emitting layer.

6. The film layer structure of the AMOLED screen according to claim 4, characterized in that: The film material assembly further includes a second light-emitting layer, and the second light-emitting layer is arranged on the current layer.

7. The film layer structure of the AMOLED screen according to claim 4, characterized in that: The hole transport layer and the first light emitting layer are parallel to each other.

8. The film layer structure of the AMOLED screen according to claim 1, characterized in that: The first protrusion is in a U shape.

9. The film layer structure of the AMOLED screen according to claim 1, characterized in that: The second protrusion is in a U shape.

10. The film layer structure of the AMOLED screen according to claim 1, characterized in that: The third protrusion is in a U shape.

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