Electronic device

Abstract

An electronic device includes a first electronic unit and a second electronic unit. The first electronic unit emits a blue light having a first spectrum with a main peak corresponding to a first wavelength in a range of 467±10% nanometers. The second electronic unit emits a light having a second spectrum different from the first spectrum, the second spectrum having a sub-peak corresponding to a second wavelength in a range of 450±10% nanometers. A ratio of a peak intensity of the sub-peak of the second spectrum to a peak intensity of the main peak of the first spectrum ranges from 0.06% to 10.0%.

Description

[0001] This application is a divisional application of the invention patent application filed on August 15, 2019, with application number 201910753917.1 and title "Electronic Device". Technical Field

[0002] This invention relates to an electronic device, and more particularly to an electronic device including a light conversion layer. Background Technology

[0003] Display devices can be integrated into electronic devices. The color gamut referenced is the NTSC (National Television System Committee) color gamut. The Rec.2020 color gamut is a color gamut used in electronic devices (such as display devices). To improve display quality, how to provide purer colors (such as red, green, or blue) to meet the requirements of Rec.2020 in wide color gamut applications is an important issue for manufacturers. Summary of the Invention

[0004] In some embodiments, the present invention provides an electronic device comprising a first electronic unit and a second electronic unit. The first electronic unit emits blue light having a first spectrum, the first spectrum having a main peak corresponding to a first wavelength, and the first wavelength being in the range of 467 ± 10% nanometers. The second electronic unit emits light having a second spectrum, the second spectrum being different from the first spectrum, the second spectrum having a sub-peak corresponding to a second wavelength, and the second wavelength being in the range of 450 ± 10% nanometers. The ratio of the peak intensity of the sub-peak of the second spectrum to the peak intensity of the main peak of the first spectrum ranges from 0.06% to 10.0%. Attached Figure Description

[0005] Figure 1 This is a schematic diagram of an electronic device according to a first embodiment of the present invention.

[0006] Figure 2 This is a schematic diagram of the input spectrum of the input light in the first embodiment.

[0007] Figure 3 This is a schematic diagram of the output spectrum of the output light in the first embodiment.

[0008] Figure 4 This is a schematic diagram of the output spectrum of the output light according to the second embodiment of the present invention.

[0009] Figure 5 This is a schematic diagram of an electronic device according to a third embodiment of the present invention.

[0010] Figure 6This is a schematic diagram of an electronic device according to a fourth embodiment of the present invention.

[0011] Figure 7 This is a schematic diagram of an electronic device according to the fifth embodiment of the present invention.

[0012] Figure 8 This is a schematic diagram of an electronic device according to the sixth embodiment of the present invention.

[0013] Figure 9 This is a cross-sectional schematic diagram of an electronic device according to the seventh embodiment of the present invention.

[0014] Figure 10 This is a cross-sectional schematic diagram of the light-emitting element according to the eighth embodiment of the present invention.

[0015] Figure 11 This is a cross-sectional schematic diagram of an electronic device according to the ninth embodiment of the present invention.

[0016] Explanation of reference numerals in the attached figures: 101 - Active layer; 103 - Gate; 105a - Source; 105b - Drain; AM - Active matrix layer; CGL - Charge generation layer; CL2, CL3 - Light rays; DP - Display device; ED - Electronic device; EIL2, EIL1, EIL - Electron injection layer; EL1 - First electrode; EL2 - Second electrode; ETL2, ETL1 - Electron transport layer; EU1 - First electronic unit; EU2 - Second electronic unit; EU3 - Third electronic unit; HIL2, HIL1, HIL - Hole injection layer; HTL2, HTL1, HTL - Hole transport layer; IL1 - Third ray; IL2 - Fourth ray; IL3 - Fifth ray; IS1 - Third spectrum; IS2 - Fourth spectrum; IW1 - Third wavelength; IW2 - Fourth wavelength; LC - Liquid crystal layer; LCL1 - First light conversion layer; LCL2 - Second light conversion layer; LCL3 - Third light conversion layer; LEL11, LEL12, LEL21, LEL22, LEL31, LEL32, LEL1, LEL2, LEL3 - Emitting layer; LU - Common light-emitting element; LU1 - First light-emitting element; LU2 - Second light-emitting element; LU3 - Third light-emitting element; MW1, MW2 - Main wave; OL1 - First ray; OL2 ​​- Second ray; OL3 - Sixth ray; OS1 - First spectrum; OS2 - Second spectrum; OS3 - Sixth spectrum; OW1 - First wavelength; OW21 - Second wavelength; OW22, OW31 - Wavelengths; OW32 - Sixth wavelength; PDL - Pixel definition layer; PL - Protective layer; QD2, QD3, QD1 - Quantum dots; SL - Protective layer; SU - Substrate; SW1, SW2 - Sub-wavelets; Tr - Transistor; V - Normal direction of the substrate. Detailed Implementation

[0017] The invention can be understood by referring to the following detailed description in conjunction with the accompanying drawings. To facilitate easy understanding and for the sake of brevity, the drawings depict only a portion of the electronic device, and specific elements are not drawn to scale. Furthermore, the number and dimensions of the elements in the drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0018] Throughout this specification and the appended claims, certain terms are used to refer to specific elements. Those skilled in the art will understand that electronic device manufacturers may use different names to refer to the same elements. This document is not intended to distinguish between elements that have the same function but different names. In the following specification and claims, words such as "containing," "having," and "comprising" are open-ended terms and should therefore be interpreted as "containing but not limited to...".

[0019] When an element or membrane is referred to as being "on" or "connected" to another element or membrane, it can be directly on or directly connected to that other element or membrane, or there may be an inserted element or membrane between them (indirect cases). Conversely, when an element is referred to as being "directly" on or "directly connected" to another element or membrane, there may be no inserted element or membrane between them.

[0020] The terms “approximately,” “roughly,” “equal to,” or “same” typically mean falling within 20% of a given value or range, or within 10%, 5%, 3%, 2%, 1%, or 0.5% of a given value or range.

[0021] Although the terms first, second, third… can be used to describe multiple components, the components are not limited to these terms. These terms are used only to distinguish a single component from other components in the specification. The same terms may not be used in the claims, but rather replaced by first, second, third… in the order of the elements declared in the claims. Therefore, in the following description, a first component may be a second component in the claims.

[0022] It should be understood that the technical features of several different embodiments can be replaced, reorganized, or mixed to complete other embodiments without departing from the spirit of the present invention.

[0023] Figure 1 This is a schematic diagram of the electronic device according to the first embodiment. Figure 2 This is a schematic diagram of the input spectrum of the input light in the first embodiment. Figure 3This is a schematic diagram of the output spectrum of the output light in the first embodiment. The electronic device ED can be a display device DP, a sensing device, or a light-emitting device, but is not limited thereto. The electronic device ED may include a first electronic unit EU1 (including a first light-emitting element LU1 and a first light conversion layer LCL1), a second electronic unit EU2 (including a second light-emitting element LU2 and a second light conversion layer LCL2), and a third electronic unit EU3 (including a third light-emitting element LU3 and a third light conversion layer LCL3). In one embodiment, the first light-emitting element LU1, the second light-emitting element LU2, or the third light-emitting element LU3 may include organic light-emitting diodes (OLEDs), light-emitting diodes (LEDs), such as mini LEDs, micro LEDs, quantum dots (QDs), quantum dot LEDs (QLEDs or QD-LEDs), fluorescent materials, phosphorescent materials, other suitable materials, or combinations of the above materials, but is not limited thereto. In some embodiments, the light-emitting layer may include multiple quantum wells (MQWs). In some embodiments, the electronic device may be a liquid crystal display device, and the light-emitting element described above may be a backlight, but is not limited thereto.

[0024] A first light conversion layer LCL1 may be disposed on a first light-emitting element LU1, a second light conversion layer LCL2 may be disposed on a second light-emitting element LU2, and a third light conversion layer LCL3 may be disposed on a third light-emitting element LU3. In some embodiments, the first light conversion layer LCL1, the second light conversion layer LCL2, or the third light conversion layer LCL3 may include multiple quantum dots, fluorescent materials, phosphorescent materials, color filter layers, or combinations of the above materials, but are not limited thereto. Quantum dots may be formed, for example, from semiconductor nanocrystal structures, and may include cadmium selenide (CdSe), cadmium sulfide (CdS), cadmium telluride (CdTe), zinc selenide (ZnSe), zinc telluride (ZnTe), zinc sulfide (ZnS), mercury telluride (HgTe), indium arsenide (InAs), alloys (Cd1-xZnxSe1-ySy), cadmium selenide / zinc sulfide (CdSe / ZnS), indium phosphide (InP), and gallium arsenide (GaAs), but are not limited thereto. The particle size of quantum dots typically ranges from 1 nanometer (nm) to 30 nanometers, 1 nanometer to 20 nanometers, or 1 nanometer to 10 nanometers. When a quantum dot is excited by input light, the input light is converted into emitted light of a different color by the quantum dot. The color of the emitted light can be adjusted by the material or size of the quantum dot. In other embodiments, the quantum dot may include spherical particles, rod-shaped particles, or particles of other suitable shapes that enable the quantum dot to emit light of a suitable color. In one embodiment, the first light conversion layer LCL1 may be replaced by a transparent layer, wherein the transparent layer may not contain quantum dots. The transparent layer may include, but is not limited to, a transparent dielectric material. In some embodiments, the first light conversion layer LCL1 may not be included in the first electronic unit EU1.

[0025] The first light-emitting element LU1 can emit light with a third spectrum IS1 (such as...). Figure 2 The third ray IL1 (as shown) can be the input light of the first optical conversion layer LCL1. The main peak of the third spectrum IS1 corresponds to the third wavelength IW1, and the range of the third wavelength IW1 can be from 461 nanometers (nm) to 473 nanometers (461 nm ≤ third wavelength IW1 ≤ 473 nm). For example, as... Figure 2 As shown, the third wavelength IW1 is approximately 467 nanometers. The third ray IL1 can be blue light. Figure 1 and Figure 3As shown, the first electronic unit EU1 can emit a first ray OL1 with a first spectrum OS1, and the main peak of the first spectrum OS1 can correspond to a first wavelength OW1, wherein the first wavelength OW1 ranges from 461 nm to 473 nm (461 nm ≤ first wavelength OW1 ≤ 473 nm). The first ray OL1 can be, for example, output light emitted from the first electronic unit EU1 (e.g., blue light). The relationship between the third ray IL1 and the first ray OL1 will be explained later. In some embodiments, the first light conversion layer LCL1 can be replaced with a transparent layer or removed from the first electronic unit EU1, and the third ray IL1 and the first ray OL1 can, for example, have the same spectrum. For example, as Figure 3 As shown, the range of the first wavelength OW1 can be from 461 nm to 473 nm (461 nm ≤ first wavelength OW1 ≤ 473 nm), and the first wavelength OW1 is approximately 467 nm.

[0026] The second light-emitting element LU2 emits a fourth ray IL2, and the third light-emitting element LU3 emits a fifth ray IL3. The fourth ray IL2 can be the input light for the second light conversion layer LCL2. The fifth ray IL3 can be the input light for the third light conversion layer LCL3. Figure 2 As shown, the fourth ray IL2 has a fourth spectrum IS2, and the fifth ray IL3 has the same fifth spectrum (not shown) as the fourth spectrum IS2. The main peak of the fourth spectrum IS2 corresponds to the fourth wavelength IW2, which can range from 300 nm to 460 nm (300 nm ≤ fourth wavelength IW2 ≤ 460 nm). In one embodiment, the fourth wavelength IW2 ranges from 440 nm to 460 nm (440 nm ≤ fourth wavelength IW2 ≤ 460 nm), for example, approximately [missing information]. Figure 2 The wavelength is 450 nanometers. In one embodiment, the third wavelength IW1 may be different from the fourth wavelength IW2. In another embodiment, the third wavelength IW1 may be greater than the fourth wavelength IW2. In some embodiments, the second light-emitting element LU2 and the third light-emitting element LU3 may include the same type of light-emitting element or the same light-emitting material, but the type of light-emitting element or light-emitting material of the first light-emitting element LU1 may be different from that of the second light-emitting element LU2 and / or the third light-emitting element LU3. In this invention, the output light described above is, for example, the final visible light of an electronic device ED, and the output light can be seen, for example, by a user (observer).

[0027] In the second electronic unit EU2, the fourth ray IL2 can be converted into a second ray OL2, the second ray OL2 having, for example, Figure 3The second spectrum OS2 is shown. The second optical conversion layer LCL2 may include quantum dots QD2, which can be excited by a portion of the fourth ray IL2, and the portion of the fourth ray IL2 can be excited by quantum dots QD2 ( Figure 1 The fourth ray (IL2) is converted into light ray CL2. It should be noted that the conversion efficiency of the quantum dot QD2 may not be 100%, and at least a portion of the fourth ray IL2 may not be converted into light CL2. The second ray OL2 may, for example, be a mixture of light CL2 and the aforementioned unconverted fourth ray IL2. The second ray OL2 may be the output light emitted by the second electronic unit EU2.

[0028] like Figure 3 As shown, the second spectrum OS2 differs from the first spectrum OS1. The second spectrum OS2 may include a main wave MW1 and a wavelet SW1. The wavelet SW1 can roughly represent the unconverted fourth ray IL2. The wavelet peak of the wavelet SW1 in the second spectrum OS2 can correspond to the second wavelength OW21, where the second wavelength OW21 ranges from 300 nm to 460 nm (300 nm ≤ second wavelength OW21 ≤ 460 nm). The "wavelet peak of wavelet SW1" is defined by the peak of wavelet SW1. Similarly, in this invention, the wavelet peaks of other wavelets within the spectrum can also be defined in the above manner. In one embodiment, the second wavelength OW21 ranges from 440 nm to 460 nm (440 nm ≤ second wavelength OW21 ≤ 460 nm), for example, approximately Figure 3 The wavelength 450 nm is shown. The difference between the first wavelength OW1 and the second wavelength OW21 is greater than or equal to 5 nm and less than or equal to 167 nm, for example, approximately... Figure 3 The wavelength shown is 17 nm. The first wavelength OW1 is greater than the second wavelength OW21. The ratio of the intensity of the sub-peak of the second spectrum OS2 to the intensity of the main peak of the first spectrum OS1 can range from 0.06% to 10% (0.06% ≤ ratio ≤ 10%), for example, 0.64% to 9.6%.

[0029] The dominant wave MW1 of the second spectrum OS2 can roughly represent the light CL2 converted by the second optical conversion layer LCL2. The dominant peak of the dominant wave MW1 of the second spectrum OS2 corresponds to the wavelength OW22, where the wavelength OW22 ranges from 522 nm to 542 nm (522 nm ≤ wavelength OW22 ≤ 542 nm), for example... Figure 3The figure shows 532 nm. The "main peak of the main wave MW1" is defined by the peak of the main wave MW1. Similarly, in this invention, the main peaks of other main waves can also be defined in the manner described above. In some embodiments, most of the fourth ray IL2 can be converted via the second optical conversion layer LCL2, and the intensity of the main peak of the main wave MW1 of the second spectrum OS2 can be greater than the intensity of the sub-peak of the sub-wavelength SW1 of the second spectrum OS2.

[0030] In the third electronic unit EU3, the concept or method of light conversion is similar to that of the second electronic unit EU2. The third electronic unit EU3 can emit a sixth ray OL3 with a sixth spectrum OS3, which differs from the first spectrum OS1. The sub-peaks of the sixth spectrum OS3 correspond to a sixth wavelength OW31, which ranges from 300 nm to 460 nm (300 nm ≤ sixth wavelength OW31 ≤ 460 nm). The difference between the first wavelength OW1 and the sixth wavelength OW31 is greater than or equal to 5 nm.

[0031] The sixth ray OL3 can be the output light emitted by the third electronic unit EU3. The third light conversion layer LCL3 can include quantum dots QD3. The quantum dots QD3 can be excited by a portion of the fifth ray IL3, and this portion of the fifth ray IL3 can be converted by the quantum dots QD3 into ray CL3, wherein the color of ray CL3 is different from the color of the fifth ray IL3. Ray CL3 and the unconverted fifth ray IL3 can, for example, be mixed with each other to produce the sixth ray OL3.

[0032] like Figure 3 As shown, the sixth spectrum OS3 may include a main wave MW2 and a wavelet SW2. Wavelet SW2 can roughly represent the unconverted fifth ray IL3. The wavelet peak of wavelet SW2 in the sixth spectrum OS3 can correspond to wavelength OW31, where wavelength OW31 ranges from 300 nm to 460 nm (300 nm ≤ wavelength OW31 ≤ 460 nm). In one embodiment, wavelength OW31 ranges from 440 nm to 460 nm (300 nm ≤ wavelength OW31 ≤ 460 nm), for example... Figure 3 The wavelength is 450 nm, and the second wavelength OW21 and wavelength OW31 can be approximately the same. The difference between the second wavelength OW21 and wavelength OW31 can be less than or equal to 2 nm. The sixth spectrum OS3 of the sixth ray OL3 is different from the first spectrum OS1 and the second spectrum OS2.

[0033] like Figure 3As shown, the difference between the first wavelength OW1 and the wavelength OW31 (or the second wavelength OW21) is approximately 17 nanometers. The ratio of the intensity of the sub-peak of the sixth spectrum OS3 to the intensity of the main peak of the first spectrum OS1 can range from 0.06% to 10.0% (0.06% ≤ ratio ≤ 10.0%), for example, from 0.064% to 9.6%.

[0034] On the other hand, the dominant wave MW2 can roughly represent the light CL3 converted by the third optical conversion layer LCL3. The dominant peak of the dominant wave MW2 of the sixth spectrum OS3 corresponds to the sixth wavelength OW32, where the sixth wavelength OW32 can range from 620 nm to 640 nm (620 nm ≤ sixth wavelength OW32 ≤ 640 nm), for example... Figure 3 (630 nm as shown) In addition, since part of the fifth ray IL3 can be converted by the third light conversion layer LCL3, the intensity of the main peak of the sixth spectrum OS3 is greater than the intensity of the sub-peak of the sixth spectrum OS3.

[0035] In some embodiments, the first ray OL1 may be blue light, the second ray OL2 may be green light, and the sixth ray OL3 may be red light. In some embodiments, the electronic device may include other light-emitting electronic units that may emit light of a different color than the first ray OL1, the second ray OL2, and the sixth ray OL3.

[0036] The spectrum (e.g., first spectrum OS1, second spectrum OS2, or sixth spectrum OS3) can be measured by an instrument capable of detecting colorimetry, such as a light sensor, a CA-210 color analyzer, a CS 1000T spectroradiometer, or a CS2000 spectroradiometer, but is not limited thereto. The spectrum (e.g., first spectrum OS1, second spectrum OS2, or sixth spectrum OS3) can be measured by its corresponding electronic unit, and during the measurement, at least one corresponding electronic unit can be turned on and the electronic device is not disassembled.

[0037] Furthermore, the spectrum (e.g., a third spectrum IS1 or a fourth spectrum IS2) can be measured by a photoluminescence (PL) measurement system. The spectrum (e.g., a third spectrum IS1 or a fourth spectrum IS2) can be measured from the surface of the light-emitting element. For example, the light-emitting element and the light conversion layer can be separated, and the light emitted from the first light-emitting element LU1, the second light-emitting element LU2, or the third light-emitting element LU3 can be measured by a photoluminescence measurement system. In some embodiments, the spectrum (e.g., a first spectrum OS1, a second spectrum OS2, a sixth spectrum OS3, a third spectrum IS1, or a fourth spectrum IS2) can be measured by other suitable methods or instruments.

[0038] In some electronic devices, different electronic units may have the same type of light source (e.g., light-emitting elements) or produce the same spectrum, and the main peak of the blue light emitted by the light-emitting element may have the same wavelength (approximately 450 nm). For example, the value (Bx) of blue light with a wavelength of 455 nm on the X-axis of the chromaticity coordinate is 0.143, the value (Bx) of blue light with a wavelength of 460 nm on the X-axis of the chromaticity coordinate is 0.141, and the value (Bx) of the blue primary color of Rec.2020 on the X-axis of the chromaticity coordinate is 0.131, but not limited thereto. Therefore, the difference in Bx value (which can be denoted as ΔBx) between the blue light emitted from the blue pixel and the blue primary color of Rec.2020 is greater than or equal to 0.01. However, according to the present invention, the first light-emitting element LU1 is different from the second light-emitting element LU2 and the third light-emitting element LU3, and the main peak of the spectrum of the blue light emitted from the first electronic unit EU1 represents that the blue pixel has a wavelength of approximately 467 nm. For example, the X-axis value (Bx) of blue light with a wavelength of 467 nm is 0.131, and the X-axis value (Bx) of blue light with a wavelength of 461 nm is 0.134. The difference (ΔBx) between the two can be less than 0.004. As mentioned above, in wide color gamut applications, the color of blue light emitted from the first electronic unit EU1 can be closer to the blue primary color of Rec.2020.

[0039] The technical features in different embodiments may be replaced, recombined, or combined. To facilitate comparison between different embodiments and variations, the differences between different embodiments and variations will be described in detail below, while the same technical features will not be repeated.

[0040] Table 1 shows different variations of the first electronic unit EU1, the second electronic unit EU2, and the third electronic unit EU3. (Refer to...) Figures 1 to 3 The details of these variations will be understood from the following description. In this invention, the first electronic unit EU1 may use any variation of variations B1 to B5, and the second electronic unit EU2 (and / or the third electronic unit EU3) may use any variation of variations A1 to A5. The first electronic unit EU1 using any variation of variations B1 to B5 may have a spectrum similar to the first spectrum OS1. The second electronic unit EU2 (and / or the third electronic unit EU3) using any variation of variations A1 to A5 may have a spectrum similar to the second spectrum OS2 (and / or the sixth spectrum OS3).

[0041] Table 1

[0042]

[0043]

[0044] In Variation A1, the fourth ray IL2 emitted by the second light-emitting element LU2 has a fourth spectrum IS2, and the wavelength range corresponding to the main peak of this spectrum is 440 nm to 460 nm (440 nm ≤ wavelength ≤ 460 nm). In Variation A1, the fifth ray IL3 emitted by the third light-emitting element LU3 has a spectrum, and the wavelength range corresponding to the main peak of this spectrum is 440 nm to 460 nm (440 nm ≤ wavelength ≤ 460 nm).

[0045] In variation A2, the fourth ray IL2 emitted by the second light-emitting element LU2 has a fourth spectrum IS2, and the wavelength range corresponding to the main peak of the fourth spectrum IS2 is 461 nm to 473 nm (461 nm ≤ wavelength ≤ 473 nm). In variation A2, the fifth ray IL3 emitted by the third light-emitting element LU3 may have a spectrum, and the wavelength range corresponding to the main peak of this spectrum is 461 nm to 473 nm (461 nm ≤ wavelength ≤ 473 nm).

[0046] In variation A3, the second light-emitting element LU2 (and / or the third light-emitting element LU3) emits ultraviolet light. The main peak of the ultraviolet light spectrum corresponds to a wavelength range of 300 nm to 450 nm (300 nm ≤ wavelength ≤ 450 nm). In some embodiments (Example A3), the second light conversion layer LCL2 (and / or the third light conversion layer LCL3) may include quantum dots, which may, for example, convert a portion of the ultraviolet light into red light (and / or green light), while the remaining portion of the ultraviolet light is not converted. In some embodiments (Example A3), the second light conversion layer LCL2 (and / or the third light conversion layer LCL3) may include two types of quantum dots to generate a portion of red light (and / or green light) and a portion of blue light, wherein the wavelength range of the blue light is 440 nm to 460 nm (440 nm ≤ wavelength ≤ 460 nm). When the second light-emitting element LU2 (and / or the third light-emitting element LU3) emits a small amount of blue light, it can reduce the sensitivity of the human eye to yellow light, but this is not the limitation.

[0047] In variation A4, the second light-emitting element LU2 (and / or the third light-emitting element LU3) may emit mixed light. The mixed light may be formed, for example, by combining blue light having a main wavelength peak in the range of 461 nm to 473 nm (461 nm ≤ main wavelength peak ≤ 473 nm) with another blue light having a main wavelength peak in the range of 440 nm to 460 nm (440 nm ≤ main wavelength peak ≤ 460 nm). For example, the light-emitting element may include two light-emitting elements (e.g., a light-emitting layer), one of which emits blue light with a main wavelength peak of approximately 450 nm, and the other emits blue light with a main wavelength peak of approximately 467 nm. These light-emitting elements may be vertically stacked or horizontally arranged (e.g., side-by-side) in an electronic unit. In some embodiments, the light-emitting element may include multiple light-emitting elements.

[0048] In variation A5, the second light-emitting element LU2 (and / or the third light-emitting element LU3) may include a quantum dot light-emitting diode capable of emitting green light with a main wavelength peak of approximately 532 nm (or red light with a main wavelength peak of approximately 630 nm). In variation A5, the second light conversion layer LCL2 (and / or the third light conversion layer LCL3) may not need to be disposed in the second electronic unit EU2 (or / and the third electronic unit EU3). In some embodiments, the quantum dot light-emitting diode described above may further include a small number of quantum dots to convert a small amount of blue light with a wavelength peak of approximately 450 nm.

[0049] In variation B1, the main peak of the third spectrum OS1 of the third ray IL1 ranges from 440 nm to 460 nm (440 nm ≤ main peak range ≤ 460 nm). The first light conversion layer LCL1 is disposed in the first electronic unit EU1 to convert the third ray IL1. The first electronic unit EU1 can emit a first ray OL1 with the first spectrum OS1, and the main peak of the first spectrum OS1 can correspond to a first wavelength OW1 ranging from 461 nm to 473 nm (461 nm ≤ first wavelength OW1 ≤ 473 nm). In wide color gamut applications, the color of the first ray OL1 of the first electronic unit EU1 can be closer to the blue primary color of Rec. 2020.

[0050] In variation B2, the main peak of the third spectrum OS1 of the third ray IL1 is in the range of 461 nm to 473 nm (451 nm ≤ main peak range ≤ 473 nm). The first light conversion layer LCL1 may not need to be disposed in the first electronic unit EU1.

[0051] In variation B3, the first light-emitting element LU1 emits ultraviolet light. A first light conversion layer LCL1 is disposed in the first electronic unit EU1 to convert the ultraviolet light. The first electronic unit EU1 emits a first ray OL1 with a first spectrum OS1, and the main peak of the first spectrum OS1 corresponds to a first wavelength OW1 in the range of 461 nm to 473 nm (461 nm ≤ first wavelength OW1 ≤ 473 nm). In wide color gamut applications, the color of the first ray OL1 of the first electronic unit EU1 can be closer to the blue primary color of Rec. 2020.

[0052] In variation B4, the first light-emitting element LU1 can emit mixed light. The mixed light is formed by mixing blue light having a main wavelength peak in the range of 461 nm to 473 nm (461 nm ≤ main wavelength peak ≤ 473 nm) and another type of blue light having a main wavelength peak in the range of 440 nm to 460 nm (440 nm ≤ main wavelength peak ≤ 460 nm). In some embodiments (Example B4), the light-emitting layer in the light-emitting element may include a portion of a light-emitting material (e.g., an organic light-emitting diode or a quantum dot light-emitting diode) capable of emitting blue light with a main wavelength peak of approximately 450 nm and another portion of a light-emitting material (e.g., an organic light-emitting diode or a quantum dot light-emitting diode) capable of emitting blue light with a main wavelength peak of approximately 467 nm. According to some variations B4, a first light conversion layer LCL1 needs to be disposed in the first electronic unit EU1 to convert the mixed light. The first electronic unit EU1 emits a first ray OL1 with a first spectrum OS1, and the main peak of the first spectrum OS1 corresponds to a first wavelength OW1 in the range of 461 nm to 473 nm (461 nm ≤ first wavelength OW1 ≤ 473 nm). In wide color gamut applications, the color of the first ray OL1 of the first electronic unit EU1 can be closer to the blue primary color of Rec. 2020. In the above embodiment B4, the first light conversion layer LCL1 may include quantum dot QD1 (… Figure 5 As shown), the quantum dot QD1 can convert the mixed light into a first ray OL1. In the above embodiment B4, the first light conversion layer LCL1 may include a blue color filter that can convert blue light with a main wavelength peak in the range of 440 nm to 460 nm (440 nm ≤ main wavelength peak ≤ 460 nm) into blue light with a main wavelength peak in the range of 461 nm to 473 nm (461 nm ≤ main wavelength peak ≤ 473 nm).

[0053] According to Variation B5, the difference between Variation B5 and Variation B1 is that the first light conversion layer LCL1 of Variation B5 includes a blue color filter that can convert blue light with a main wavelength peak in the range of 440 nm to 460 nm (440 nm ≤ main wavelength peak ≤ 460 nm) into blue light with a main wavelength peak in the range of 461 nm to 473 nm (461 nm ≤ main wavelength peak ≤ 473 nm).

[0054] Figure 4 This is a schematic diagram of the output spectrum of the output light in the second embodiment. The second electronic unit EU2 and the third electronic unit EU3 can use the concept of variation A3, and the first electronic unit EU1 can use any structure from variation B1 to variation B5. The second light-emitting element LU2 and the third light-emitting element LU3 can emit ultraviolet light with a main peak ranging from 300 nm to 450 nm (300 nm ≤ main peak ≤ 450 nm), and the wavelengths of the sub-peaks of the spectrum (e.g., the second spectrum OS2, the sixth spectrum OS3) (e.g., the second wavelength OW21, the wavelength OW31) are approximately 300 nm. The difference between the first wavelength OW1 and the wavelength OW31 (or the second wavelength OW21) is approximately 167 nm. The difference between the first wavelength OW1 and the second wavelength OW21 is approximately 167 nm.

[0055] Figure 5 This is a schematic diagram of an electronic device according to a third embodiment of the present invention. Figure 5 As shown, the first light-emitting element LU1 can contact the second light-emitting element LU2, and the second light-emitting element LU2 can contact the third light-emitting element LU3. Therefore, in the normal direction V of the substrate SU, the portion of the common light-emitting element LU corresponding to the first light conversion layer LCL1 can be considered as the first light-emitting element LU1, wherein the normal direction V of the substrate SU is perpendicular to the surface of the first light-emitting element LU1 (or the common light-emitting element LU). In the normal direction V, the portion of the common light-emitting element LU corresponding to the second light conversion layer LCL2 can be considered as the second light-emitting element LU2, and in the normal direction V of the substrate SU, the portion of the common light-emitting element LU corresponding to the third light conversion layer LCL3 can be considered as the third light-emitting element LU3. Therefore, the third ray IL1, the fourth ray IL2, and the fifth ray IL3 can have the same spectrum. The third wavelength IW1, the fourth wavelength IW2, and the fifth wavelength can be the same.

[0056] In some embodiments ( Figure 5 As shown), the common light-emitting element LU can emit blue light with a main wavelength peak in the range of 440 nm to 460 nm (440 nm ≤ main wavelength peak ≤ 460 nm). In some embodiments ( Figure 5As shown), the common light-emitting element LU can emit ultraviolet light with a main wavelength peak in the range of 300 nm to 450 nm (300 nm ≤ main wavelength peak ≤ 450 nm). In some embodiments ( Figure 5 As shown), the first light conversion layer LCL1 needs to be disposed in the first electronic unit EU1. The first light conversion layer LCL1 can convert ultraviolet light into blue light with a main wavelength peak in the range of 461 nm to 473 nm (461 nm ≤ main wavelength peak ≤ 473 nm), and in wide color gamut applications, the color of the first electronic unit EU1 can be closer to the blue primary color of Rec. 2020. The common light-emitting element LU may include, but is not limited to, organic light-emitting diodes, quantum dot light-emitting diodes, or combinations of the above materials.

[0057] Figure 6 This is a schematic diagram of an electronic device according to the fourth embodiment. The difference between the fourth embodiment and the third embodiment is that the electronic device ED in the fourth embodiment is a liquid crystal device. In some embodiments, a liquid crystal layer LC is disposed between a common light-emitting element LU and a light conversion layer (e.g., a first light conversion layer LCL1, a second light conversion layer LCL2, and a third light conversion layer LCL3), but is not limited thereto. In some embodiments, the light conversion layer (e.g., a first light conversion layer LCL1, a second light conversion layer LCL2, and a third light conversion layer LCL3) may be disposed between the liquid crystal layer LC and the common light-emitting element LU. The common light-emitting element LU may be a backlight source and may emit blue light having a main wavelength peak (440 nm ≤ main wavelength peak ≤ 460 nm) in the range of 440 nm to 460 nm. Furthermore, the first light conversion layer LCL1 may include a color filter layer or quantum dots, which can convert blue light with a main wavelength range of 440 nm to 460 nm (440 nm ≤ main wavelength ≤ 460 nm) into blue light with a main wavelength range of 461 nm to 473 nm (461 nm ≤ main wavelength ≤ 473 nm). Therefore, in wide color gamut applications, the color of the first electronic unit EU1 can be closer to the blue primary color of Rec.2020.

[0058] In some embodiments, the first light-emitting element LU1 or the second light-emitting element LU2 includes one or more light-emitting layers.

[0059] Figure 7 This is a schematic diagram of the electronic device according to the fifth embodiment. Figure 7As shown, the first light-emitting element LU1, the second light-emitting element LU2, and the third light-emitting element LU3 may each include two light-emitting layers (or more than two light-emitting layers). For example, the light-emitting layers LEL11 and LEL12 in the first light-emitting element LU1 can both emit blue light with a main wavelength peak in the range of 461 nm to 473 nm (461 nm ≤ main wavelength peak ≤ 473 nm). Therefore, the first light conversion layer LCL1 can be replaced by a transparent layer, or the first light conversion layer LCL1 may not be required. The light-emitting layers LEL21 and LEL22 in the second light-emitting element LU2, for example, emit blue light with a main wavelength peak in the range of 440 nm to 460 nm (440 nm ≤ main wavelength peak ≤ 460 nm). The light-emitting layers LEL31 and LEL32 in the third light-emitting element LU3 can emit blue light with a main wavelength peak in the range of 440 nm to 460 nm (440 nm ≤ main wavelength peak ≤ 460 nm). In some embodiments, when the number of light-emitting layers is greater than or equal to 2, the light-emitting layers (e.g., organic light-emitting diodes or quantum dot light-emitting diodes) may be alternately arranged in the normal direction V of the substrate SU.

[0060] Figure 8 This is a schematic diagram of the electronic device according to the sixth embodiment. The difference between the sixth embodiment and the fifth embodiment is that the first light-emitting element LU1, the second light-emitting element LU2, and the third light-emitting element LU3 in the sixth embodiment share the light-emitting layers LEL1 and LEL2. The light-emitting layers LEL1 and LEL2 can emit light with a main wavelength peak in the range of 440 nm to 460 nm (440 nm ≤ main wavelength peak ≤ 460 nm). The first light conversion layer LCL1 needs to be disposed in the first electronic unit EU1, thereby making the color of the first electronic unit EU1 closer to the blue primary color of Rec. 2020 in wide color gamut applications.

[0061] In some embodiments, the first light-emitting element LU1 may include two light-emitting layers, one hole injection layer, and two hole transport layers. The hole injection layer is disposed between the two light-emitting layers, wherein one of the two hole transport layers is disposed between one of the two light-emitting layers and the hole injection layer, and the other of the two hole transport layers is disposed between the other of the two light-emitting layers and the hole injection layer.

[0062] Figure 9 This is a cross-sectional schematic diagram of the electronic device according to the seventh embodiment. For example, such as Figure 9As shown, the first light-emitting element LU1, the second light-emitting element LU2, and the third light-emitting element LU3 share a common light-emitting element LU. The common light-emitting element LU includes a plurality of second electrodes EL2, hole injection layers HIL2, hole transport layers HTL2, light-emitting layers LEL2, electron transport layers ETL2, electron injection layers EIL2, charge generation layers CGL, hole injection layers HIL1, hole transport layers HTL1, light-emitting layers LEL1, electron transport layers ETL1, electron injection layers EIL1, and a first electrode EL1, stacked sequentially in the normal direction V of the substrate SU. The light-emitting layers LEL1 and LEL2 may comprise organic light-emitting materials or quantum dots. The second electrode EL2 may be one of the cathodes or anodes, and the first electrode EL1 may be the other of the cathodes or anodes. The second electrode EL2 may be disposed on the protective layer PL, and one of the second electrodes EL2 may be disposed in a corresponding opening formed by the pixel definition layer PDL, thus allowing the second electrodes EL2 to be individually disposed in corresponding electronic units. Furthermore, one of the second electrodes EL2 may pass through the protective layer PL and be electrically connected to a transistor in the electronic unit. The light-emitting layers LEL1 and LEL2 can be formed, for example, in the same process, and can be formed as a single, continuous film layer (i.e., the light-emitting layers LEL1 and LEL2 are uninterrupted), but this is not a limitation. Furthermore, the first light conversion region LCL1, the second light conversion region LCL2, and the third light conversion region LCL3 can be disposed on the substrate SU, but this is not a limitation. In other embodiments, the aforementioned film layers can be added or removed depending on the circumstances, and this is not a limitation.

[0063] The stacked structure of the common light-emitting element LU can be considered as an integration of different light-emitting elements, wherein the light-emitting elements can be electrically connected to each other in series. In some embodiments, the light-emitting elements can be arranged laterally side by side, the charge generation layer may not be provided in the light-emitting elements, and the light-emitting elements can be electrically connected to each other in parallel.

[0064] Figure 10 This is a cross-sectional schematic diagram of the light-emitting element according to the eighth embodiment. The difference between the eighth embodiment and the seventh embodiment is that the common light-emitting element LU in the eighth embodiment includes a hole injection layer HIL. The hole injection layer HIL is disposed between the light-emitting layers LEL1 and LEL2 and can serve as a charge generation layer CGL. The common light-emitting element LU includes a second electrode EL2, an electron injection layer EIL2, an electron transport layer ETL2, a light-emitting layer LEL2, a hole transport layer HTL, a hole injection layer HIL1, a hole transport layer HTL1, a light-emitting layer LEL1, an electron transport layer ETL1, an electron injection layer EIL1, and a first electrode EL1, stacked sequentially in the normal direction V of the substrate SU. Furthermore, the hole injection layer HIL can be electrically connected to an electrode that can provide carriers to the hole injection layer HIL.

[0065] In some embodiments, the co-light-emitting element LU may include an electron injection layer EIL. The electron injection layer EIL may be disposed between light-emitting layers LEL1 and LEL2, and may serve as a charge-generating layer CGL. The co-light-emitting element LU includes a second electrode EL2, a hole injection layer HIL2, a hole transport layer HTL2, a light-emitting layer LEL2, an electron transport layer ETL2, an electron injection layer EIL, an electron transport layer ETL1, a light-emitting layer LEL1, a hole transport layer HTL1, and a hole injection layer HIL1, stacked sequentially in the normal direction V of the substrate SU. Furthermore, the electron injection layer EIL may be electrically connected to an electrode that can provide carriers to the electron injection layer EIL.

[0066] Figure 11 This is a cross-sectional schematic diagram of the electronic device according to the ninth embodiment. Figure 11 As shown, the active matrix layer AM is disposed between the light-emitting elements (e.g., the first light-emitting element LU1, the second light-emitting element LU2, and the third light-emitting element LU3) and the substrate SU. The pixel definition layer PDL includes multiple grooves. The first light-emitting element LU1 and the first light conversion layer LCL1 can be disposed in one of the grooves, the second light-emitting element LU2 and the second light conversion layer LCL2 can be disposed in another groove, and the third light-emitting element LU3 and the third light conversion layer LCL3 can be disposed in yet another groove. The light-emitting layers LEL1, LEL2, and LEL3 can be disposed between the first electrode EL1 and the second electrode EL2.

[0067] The active matrix layer AM may include transistors Tr, signal lines, or insulating layers. The second electrode EL2 may be electrically connected to the corresponding transistor Tr via a via. Transistor Tr may include an active layer 101, a gate 103, a source 105a, and a drain 105b. In addition, a protective layer SL may be disposed on the light conversion layers (first light conversion layer LCL1, second light conversion layer LCL2, and third light conversion layer LCL3) and the first electrode EL1 to reduce the device's exposure to moisture or oxygen.

[0068] In summary, based on the spectrum of the output light emitted by the electronic device, the main peak of the first spectrum corresponds to the first ray, where the wavelength range of the first ray is 461 nm to 473 nm (461 nm ≤ wavelength ≤ 473 nm). The sub-peaks of the spectrum correspond to the second ray, where the wavelength range of the second ray is 300 nm to 460 nm (300 nm ≤ wavelength ≤ 460 nm). The wavelength difference between the main peak of the first ray and the sub-peak of the second ray is greater than or equal to 5 nm and less than or equal to 167 nm. The difference between the Bx value of the blue light emitted by the first electronic unit and the Bx value of the Rec.2020 blue primary color light can be less than 0.004. Therefore, in wide color gamut applications, the color of the blue light emitted by the first electronic unit can be closer to the Rec.2020 blue primary color light.

[0069] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Those skilled in the art will recognize that the present invention can have various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electronic device, characterized by comprising: Comprising: a first electronic unit emitting a blue light, the blue light having a first spectrum, the first spectrum having a main peak corresponding to a first wavelength, and the first wavelength being in the range of 467±10% nm; and a second electronic unit emitting a light, the light having a second spectrum, the second spectrum being different from the first spectrum, the second spectrum having a sub-peak corresponding to a second wavelength, and the second wavelength being in the range of 450±10% nm; wherein a ratio of a peak intensity of the sub-peak of the second spectrum to a peak intensity of the main peak of the first spectrum is in the range of 0.06% to 10.0%. 2.The electronic device of claim 1, wherein, The first electronic unit comprises a first light-emitting element, and the second electronic unit comprises a second light-emitting element, the first light-emitting element being in contact with the second light-emitting element. 3.The electronic device of claim 2, wherein, The first light-emitting element emits another light, the another light having a third spectrum, the third spectrum having a main peak corresponding to a third wavelength, the second light-emitting element emits still another light, the still another light having a fourth spectrum, and the fourth spectrum having a main peak corresponding to a fourth wavelength, wherein the third wavelength is the same as the fourth wavelength. 4.The electronic device of claim 3, wherein, The third wavelength and the fourth wavelength are in the range of 450±10% nm. 5.The electronic device of claim 2, wherein, The first electronic unit comprises a first light conversion layer disposed on the first light-emitting element, and the first light conversion layer comprises a plurality of quantum dots, a fluorescent material, a phosphorescent material, a color filter layer, or a combination thereof. 6.The electronic device of claim 1, wherein, The light is green light. 7.The electronic device of claim 1, wherein, Further comprising a third electronic unit, the third electronic unit emitting another light, the another light having a third spectrum, the third spectrum being different from the first spectrum, the third spectrum being different from the second spectrum, the third spectrum having a sub-peak corresponding to a wavelength in the range of 450±10% nm. 8.The electronic device of claim 7, wherein, The light is green light, and the another light is red light. 9.The electronic device of claim 7, wherein, A ratio of a peak intensity of the sub-peak of the third spectrum to a peak intensity of the main peak is in the range of 0.06% to 10.0%.

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