Structure for improving color gamut of AMOLED display screen

Abstract

The utility model discloses a structure for improving the color gamut of an AMOLED display screen, which comprises a cover plate, a polaroid and a display screen which are sequentially arranged from top to bottom, a quantum dot film used for improving the color gamut of the display screen is arranged in the polaroid, and light emitted by the display screen is emitted after passing through the quantum dot film. The structure has the effect that the quantum dot film is arranged to improve the color gamut of the display screen so as to meet the requirement of consumers for higher color gamut.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to a structure for improving the color gamut of an AMOLED display screen. Background Technique

[0002] Organic Light Emitting Diode (OLED) has the characteristic of self-luminescence and adopts a very thin organic material coating and a substrate. When current passes through, the organic material will emit light. The driving mode of OLED is divided into passive driving and active driving. Among them, active driving is Active-matrix Organic Light Emitting Diode (AMOLED); due to the characteristics of fast response speed, high contrast, wide viewing angle, self-luminescence, etc. of AMOLED, it has attracted much attention and is widely used in mobile phone screens, computer monitors, full-color computers, etc. as a new generation of display mode. When AMOLED is applied to smart watch projects, the functions of smart watches are becoming more and more comprehensive, integrating a series of functions such as touch control, display, and NFC payment.

[0003] The color gamut of existing AMOLED smart watch modules is within the range of 100%, but in order to improve the selling points of AMOLED smart watches, consumers have put forward the requirement of a higher color gamut of NTSC 120%, and it is necessary to further improve the color gamut of the AMOLED display screen. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a structure for improving the color gamut of an AMOLED display screen.

[0005] The purpose of the utility model is realized by the following technical solutions:

[0006] A structure for improving the color gamut of an AMOLED display screen, comprising: a cover plate, a polarizer, and a display screen arranged in sequence from top to bottom. A quantum dot film for improving the color gamut of the display screen is arranged in the polarizer, and the light emitted by the display screen passes through the quantum dot film and then exits.

[0007] In one embodiment, quantum dot particles are distributed in the quantum dot film.

[0008] In one embodiment, the diameter of the quantum dot particles is 1nm - 10nm.

[0009] In one embodiment, the polarizer includes a first TAC film layer, a PVA film layer, a second TAC film layer, and a PSA adhesive layer arranged in sequence from top to bottom, and the PSA adhesive layer is adhesively fixed to the upper surface of the display screen.

[0010] In one embodiment, the quantum dot film is located between the second TAC film layer and the PSA adhesive layer.

[0011] In one embodiment, a waterproof coating for waterproofing is provided above the polarizer, and the waterproof coating is coated on the upper surface of the polarizer.

[0012] In one embodiment, the thickness of the waterproof coating is 10um - 15um.

[0013] In one embodiment, the display screen includes a substrate, a TFT layer, an OLED element, and a packaging glass sequentially arranged from bottom to top.

[0014] In one embodiment, a protective layer is provided above the display screen. The protective layer is located between the display screen and the polarizer, and the protective layer is used to absorb ultraviolet rays and isolate water vapor.

[0015] In one embodiment, the size of the protective layer is adapted to the size of the display screen, and the protective layer is attached to the upper surface of the display screen.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] A structure for improving the color gamut of an AMOLED display screen of the present invention improves the color gamut of the display screen by providing a quantum dot film. The display screen is an AMOLED display screen with the characteristic of self-luminescence. The light emitted from the display screen passes through the quantum dot film and then exits, so as to convert the blue light in the display screen light into the required green light and red light, thereby improving the color gamut of the display screen on the original basis and meeting the higher color gamut requirements of consumers for AMOLED display screens. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below.

[0019] Figure 1 It is a schematic structural diagram of a structure for improving the color gamut of an AMOLED display screen provided by the present invention;

[0020] Figure 2 It is a schematic stacked structure diagram of a structure for improving the color gamut of an AMOLED display screen provided by the present invention;

[0021] Figure 3 It is a schematic stacked structure diagram of a polarizer in a structure for improving the color gamut of an AMOLED display screen provided by the present invention;

[0022] Figure 4 Schematic diagram of the stacking structure of the display screen in a structure for improving the color gamut of an AMOLED display screen provided by the present utility model.

[0023] Description of the drawings: 10. Cover plate; 20. Polarizer; 21. First TAC film layer; 22. PVA film layer; 23. Second TAC film layer; 24. PSA adhesive layer; 30. Display screen; 31. Substrate; 32. TFT layer; 33. OLED element; 34. Encapsulation glass; 40. Quantum dot film; 50. Waterproof coating; 60. Protective layer. Detailed implementation manners

[0024] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0025] A structure for improving the color gamut of an AMOLED display screen, referring to Figure 1 and Figure 2 , includes a cover plate 10, a polarizer 20 and a display screen 30 which are arranged in sequence from top to bottom. A quantum dot film 40 for improving the color gamut of the display screen 30 is arranged in the polarizer 20. The quantum dot film 40 is located above the display screen 30. The light emitted by the display screen 30 passes through the quantum dot film 40 and then is emitted to improve the color gamut of the display screen 30.

[0026] Referring to Figure 3 , quantum dot particles are distributed in the quantum dot film 40. The diameter of the quantum dot particles is 1 nm - 10 nm. In this embodiment, the diameter of the quantum dot particles is preferably 3 nm - 7 nm. The diameter of the quantum dot particles can be adjusted according to the requirements of the display screen 30. For example, if the display screen 30 has a greater demand for green light, the diameter of the quantum dot particles is relatively selected to be smaller; if the display screen 30 has a greater demand for red light, the diameter of the quantum dot particles is relatively selected to be larger. Preferably, when the diameter of the quantum dot particles is 3 nm, the blue light part in the light emitted by the display screen 30 is excited by the quantum dot film 40 to emit green light; when the diameter of the quantum dot particles is 7 nm, the blue light part in the light emitted by the display screen 30 is excited by the quantum dot film 40 to emit red light, thereby improving the color gamut of the display screen 30.

[0027] Referring to Figure 3 , the polarizer 20 includes a first TAC film layer 21, a PVA film layer 22, a second TAC film layer 23 and a PSA adhesive layer 24 which are arranged in sequence from top to bottom. The PSA adhesive layer 24 is adhesively fixed to the upper surface of the display screen 30. The polarizer 20 is arranged above the display screen 30, which can reduce the reflectivity and improve the contrast. By providing two film layers, namely the first TAC film layer 21 and the second TAC film layer 23, it has a good ultraviolet protection function, making the service life of the display screen 30 longer.

[0028] Furthermore, referring to Figure 3The quantum dot film 40 is located between the second TAC film layer 23 and the PSA adhesive layer 24 so as to be adhered and fixed to the display screen 30 through the PSA adhesive layer 24 .

[0029] Further, refer to Figure 2 A waterproof coating 50 for waterproofing is provided above the polarizer 20. The waterproof coating 50 is coated on the upper surface of the polarizer 20 to effectively prevent water vapor from entering the polarizer 20 and causing the polarizer 20 to change color.

[0030] Reference Figure 2 The thickness of the waterproof coating 50 is 10um-15um.

[0031] Further, refer to Figure 4 The display screen 30 is an AMOLED display screen 30, which has the characteristic of self-luminescence. The display screen 30 includes a substrate 31, a TFT layer 32, an OLED element 33 and an encapsulation glass 34 arranged in sequence from bottom to top. The TFT layer 32 is a thin film transistor, and the OLED element 33 is an organic light emitting diode. The TFT layer 32 can drive the OLED element 33, i.e., the organic light emitting diode, to emit light, so that the display screen 30 can display images. The encapsulation glass 34 above the OLED element 33 is bonded to the outer edge of the substrate 31, so that the TFT layer 32 and the OLED element 33 are located in the encapsulation glass 34 and the substrate 31, and are in a closed space.

[0032] Further, refer to Figure 2 A protective layer 60 is provided above the display screen 30, that is, between the display screen 30 and the polarizer 20. The protective layer 60 has the function of absorbing ultraviolet rays and isolating water vapor. The protective layer 60 can absorb external ultraviolet rays, better protect the liquid crystal elements in the display screen 30 to extend its service life, and avoid damage by ultraviolet rays, and can prevent water vapor and oxygen in the air from entering the interior of the display screen 30 to damage the display screen 30.

[0033] Further, refer to Figure 2 The size of the protective layer 60 is adapted to the size of the display screen 30 , and the protective layer 60 is attached to the upper surface of the display screen 30 .

[0034] The display screen 30 increases the color gamut of the display screen 30 by adding a quantum dot film 40 in the polarizer 20. The display screen 30 is an AMOLED display screen 30 with a self-luminous characteristic. The light emitted from the display screen 30 passes through the quantum dot film 40 and then is emitted to convert the blue light in the light of the display screen 30 into the required green light and red light, thereby increasing the color gamut of the display screen 30 on the original basis and meeting consumers' demand for a higher color gamut of the AMOLED display screen 30.

[0035] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A structure for improving the color gamut of an AMOLED display screen, characterized in that: include: A cover plate (10), a polarizing film (20) and a display screen (30) are arranged in sequence from top to bottom; a quantum dot film (40) for improving the color gamut of the display screen (30) is arranged in the polarizing film (20); light emitted by the display screen (30) passes through the quantum dot film (40) and then is emitted.

2. The structure for improving the color gamut of an AMOLED display screen according to claim 1, characterized in that: Quantum dot particles are distributed in the quantum dot film (40).

3. The structure for improving the color gamut of an AMOLED display screen according to claim 2, characterized in that: The diameter of the quantum dot particles is 1nm-10nm.

4. The structure for improving the color gamut of an AMOLED display screen according to claim 1, characterized in that: The polarizer (20) comprises a first TAC film layer (21), a PVA film layer (22), a second TAC film layer (23) and a PSA adhesive layer (24) which are arranged in sequence from top to bottom, and the PSA adhesive layer (24) is bonded and fixed to the upper surface of the display screen (30).

5. The structure for improving the color gamut of an AMOLED display screen according to claim 4, characterized in that: The quantum dot film (40) is located between the second TAC film layer (23) and the PSA adhesive layer (24).

6. The structure for improving the color gamut of an AMOLED display screen according to claim 5, characterized in that: A waterproof coating (50) for waterproofing is provided above the polarizer (20), and the waterproof coating (50) is coated on the upper surface of the polarizer (20).

7. The structure for improving the color gamut of an AMOLED display screen according to claim 6, characterized in that: The thickness of the waterproof coating (50) is 10um-15um.

8. The structure for improving the color gamut of an AMOLED display screen according to claim 5, characterized in that: The display screen (30) comprises a substrate (31), a TFT layer (32), an OLED element (33) and a packaging glass (34) which are arranged in sequence from bottom to top.

9. The structure for improving the color gamut of an AMOLED display screen according to claim 8, characterized in that: A protective layer (60) is provided above the display screen (30), the protective layer (60) is located between the display screen (30) and the polarizer (20), and the protective layer (60) is used to absorb ultraviolet rays and isolate water vapor.

10. The structure for improving the color gamut of an AMOLED display screen according to claim 9, characterized in that: The size of the protective layer (60) is adapted to the size of the display screen (30), and the protective layer (60) is attached to the upper surface of the display screen (30).

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