Light emitting diode display device

Abstract

The invention discloses a light emitting diode display device which comprises a substrate, a plurality of green units, a plurality of red units, a plurality of blue units and a plurality of cyan units, wherein the green units, the red units, the blue units and the cyan units are periodically arranged on the substrate. Wherein the number of the green units is greater than the number of the red units, the number of the green units is greater than the number of the blue units, and the number of the green units is greater than the number of the cyan units.

Description

Technical Field

[0001] The present invention relates to a display device, in particular to a light emitting diode display device. Background Art

[0002] In the existing light emitting diode (LED) display technology, the function of displaying color images is generally achieved by configuring a red LED unit, a green LED unit, and a blue LED unit in the display device, and mixing the three LED units with each other. However, with the widespread application of display devices, users' requirements for display devices are gradually increasing. For example, in order to improve the realism of color images, display devices are required to have a color gamut or color space that is closer to the real image. Therefore, although existing light emitting diode display devices have gradually met their established uses, they do not meet the requirements in all aspects. Therefore, it is necessary to develop a light emitting diode display device with a wide color gamut. Summary of the invention

[0003] In some embodiments, a light emitting diode display device is provided, which includes a substrate and a plurality of green units, a plurality of red units, a plurality of blue units, and a plurality of cyan units periodically arranged on the substrate, wherein the number of green units is greater than the number of red units, the number of green units is greater than the number of blue units, and the number of green units is greater than the number of cyan units.

[0004] The light emitting diode display device of the present invention can be applied to various types of electronic devices. In order to make the features and advantages of the present invention more obvious and easy to understand, various embodiments are given below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Through the following detailed description in conjunction with the attached drawings, the viewpoints of the embodiments of the present invention can be better understood. It is worth noting that, according to standard practices in the industry, some components (features) may not be drawn to scale. In fact, the sizes of different components may be increased or reduced in order to clearly describe.

[0006] Figure 1 are some embodiments of the present invention, showing a schematic top view of a light emitting diode display device;

[0007] Figure 2 are some embodiments of the present invention, showing cross-sectional schematic diagrams of light emitting diode display devices;

[0008] Figure 3 are some other embodiments of the present invention, showing cross-sectional schematic diagrams of light emitting diode display devices;

[0009] Figure 4 are some other embodiments of the present invention, showing cross-sectional schematic diagrams of light emitting diode display devices;

[0010] Figure 5 are some other embodiments of the present invention, showing cross-sectional schematic diagrams of light emitting diode display devices;

[0011] Figure 6 are some other embodiments of the present invention, showing cross-sectional schematic diagrams of light emitting diode display devices;

[0012] Figure 7 are schematic diagrams showing the color borrowing mechanism of some embodiments of the present invention;

[0013] Figure 8 yes Figure 1 An enlarged schematic diagram of the minimal repeat unit in the mitochondria;

[0014] Fig. 9 is a schematic diagram showing the operation process of a light emitting diode display device according to some embodiments of the present invention;

[0015] Fig. 10A and Fig. 10B They are schematic diagrams showing time sub-zones in some embodiments of the present invention;

[0016] Fig.11 are schematic diagrams showing the minimum repeating area and spatial sub-areas of a light emitting diode display device in accordance with some other embodiments of the present invention;

[0017] Fig.12 are schematic diagrams showing the minimum repeating area and spatial sub-areas of a light emitting diode display device in accordance with some other embodiments of the present invention;

[0018] Fig.13 are schematic diagrams showing the minimum repeating area and spatial sub-areas of a light emitting diode display device in accordance with some other embodiments of the present invention;

[0019] Fig.14 are schematic diagrams showing the minimum repeating area and spatial sub-areas of a light emitting diode display device in accordance with some other embodiments of the present invention;

[0020] Fig.15 Schematic diagrams showing the minimum repeating area and spatial sub-areas of a light emitting diode display device according to some other embodiments of the present invention.

[0021] Explanation of symbols

[0022] 1: Light Emitting Diode Display Device

[0023] 10:Substrate

[0024] 11: Light-emitting components

[0025] 11b: Blue unit

[0026] 11c: Cyan unit

[0027] 11g: Green Unit

[0028] 11r: Red unit

[0029] 110b: Blue LED chip

[0030] 110c: Cyan LED chip

[0031] 110g: Green LED chip

[0032] 110r: Red LED chip

[0033] 110uv: Ultraviolet LED chip

[0034] 111b: Blue conversion layer

[0035] 111c: Cyan conversion layer

[0036] 111g: Green conversion layer

[0037] 111r: Red conversion layer

[0038] 12: Controller

[0039] 13: Spacer

[0040] 130: Reflective wall

[0041] 131: Absorption wall

[0042] 14: Distributed Bragg reflector

[0043] D1: First direction

[0044] D2: Second direction

[0045] I: Input image

[0046] P sub_b ,P sub_c ,P sub_g ,P sub_r :Minimum spacing

[0047] S b ,S c ,S g ,S r : Luminous area

[0048] Su: Area

[0049] U1,U2,U3,U4,U5,U6: Minimum repeat region

[0050] US1-1,US1-2,US2-1,US2-2,US2-3,US2-4,US3-1,US3-2,US4-1,US4-2,US5-1,US5-2,US6-1,US6-2,US6-3: space sub-area

[0051] UT1-1,UT1-2,UT1-3,UT1-4: time sub-zone DETAILED DESCRIPTION

[0052] The following disclosure provides many different embodiments or examples for implementing the provided light-emitting diode display device. Specific examples of each component and its configuration are described below to simplify the embodiments of the present invention, but are certainly not intended to limit the present invention. For example, if the description mentions that a first component is formed on a second component, it may include an embodiment in which the first component and the second component are in direct contact, and it may also include an embodiment in which an additional component is formed between the first component and the second component so that the first component and the second component are not in direct contact. In addition, the present invention may repeat component symbols and / or characters in different embodiments or examples. Such repetition is for simplicity and clarity, and is not used to indicate the relationship between the different embodiments and / or examples discussed.

[0053] The directional terms mentioned herein, such as "up", "down", "left", "right" and the like, are with reference to the directions of the accompanying drawings. Therefore, the directional terms used are used to illustrate rather than to limit the present invention.

[0054] In some embodiments of the present invention, terms such as "disposed", "connected" and similar terms, unless otherwise defined, may refer to two components being in direct contact, or may refer to two components not being in direct contact, wherein an additional component is located between the two structures. Terms such as "disposed", "connected" and similar terms may also include situations where both structures are movable or both structures are fixed.

[0055] In addition, the terms "first", "second" and the like mentioned in this specification or claims are used to name different components or distinguish different embodiments or ranges, and are not used to limit the upper or lower limit of the number of components, nor are they used to limit the manufacturing order or setting order of the components.

[0056] Hereinafter, "approximately", "substantially" or similar terms mean within 10%, within 5%, within 3%, within 2%, within 1%, or within 0.5% of a given value or range of values. The numbers given here are approximate numbers, that is, in the absence of specific description of "approximately" or "substantially", the meaning of "approximately" or "substantially" can still be implied.

[0057] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as commonly understood by those of ordinary skill in the art. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant technology and the present invention, and should not be interpreted in an idealized or overly formal manner unless specifically defined in the embodiments of the present invention.

[0058] Please refer to Figure 1 and Figure 2 , which are respectively a top view schematic diagram and a cross-sectional schematic diagram showing a light emitting diode display device according to some embodiments of the present invention. As shown in the figure, the light emitting diode display device 1 includes a substrate 10, and the substrate 10 carries electronic components (for example, the light emitting unit mentioned below) located thereon. In some embodiments, the substrate 10 can be a printed circuit board (PCB), a thin film transistor glass (TFT glass), a complementary metal oxide semiconductor (CMOS) substrate or other suitable substrates, but the present invention is not limited thereto.

[0059] In some embodiments, the light emitting diode display device 1 further includes a light emitting component 11. The light emitting component 11 includes a plurality of green units 11g, a plurality of red units 11r, a plurality of blue units 11b, and a plurality of cyan units 11c, and the light emitting units are periodically arranged on the substrate 10 (which will be explained in detail later). In some embodiments, the green unit 11g, the red unit 11r, the blue unit 11b, and the cyan unit 11c have the same size. For example, the green unit 11g, the red unit 11r, the blue unit 11b, and the cyan unit 11c may have the same length, width, and thickness, but the present invention is not limited thereto. In some embodiments, the green unit 11g, the red unit 11r, the blue unit 11b, and the cyan unit 11c may have the same length and width (that is, the same top-view area), but have different thicknesses. By providing the cyan unit 11c in the light emitting diode display device 1, the color gamut width of the light emitting diode display device can be improved.

[0060] like Figure 2 As shown, in some embodiments, the green unit 11g may include a green LED chip 110g, and the green LED chip 110g may emit green visible light with a wavelength between 510nm and 570nm; the red unit 11r may include a red LED chip 110r, and the red LED chip 110r may emit red visible light with a wavelength between 610nm and 750nm; the blue unit 11b may include a blue LED chip 110b, and the blue LED chip 110b may emit blue visible light with a wavelength between 440nm and 470nm; and the cyan unit 11c may include a cyan LED chip 110c, and the cyan LED chip 110c may emit cyan visible light with a wavelength between 470nm and 510nm, but the present invention is not limited to this.

[0061] Reference Figure 3 , which is a cross-sectional schematic diagram showing a light emitting diode display device according to some other embodiments of the present invention. As shown in the figure, in some embodiments, different color conversion layers can be respectively provided on multiple LED chips of the same type (for example, the same color) to convert a single color of light into different colors of light, thereby achieving the same effect as described above. For example, Figure 3 Each of the green unit 11g, the red unit 11r, the blue unit 11b and the cyan unit 11c in the embodiment may include the same ultraviolet LED chip 110uv, and respectively include a green conversion layer 111g, a red conversion layer 111r, a blue conversion layer 111b and a cyan conversion layer 111c disposed on the ultraviolet LED chip 110uv. The present invention may also use a blue LED chip or an LED chip of other colors (wavelengths) as required, without being limited to the above-mentioned ultraviolet LED chip. By using the same LED chip, the types of LED chips can be simplified.

[0062] In some embodiments, the material of the LED chip may include inorganic semiconductor materials, such as III-V compounds, II-VI compounds, or other suitable materials, but the present invention is not limited thereto. In some embodiments, each color conversion layer may include materials such as phosphors and quantum dots to convert the single color light emitted by each LED chip into light of a specific color. For example, when used with a blue LED chip, the cyan conversion layer 111c may include BaLu2Al2Ga2SiO 12 :Ce 3+ / Bi 3+ , so that blue visible light can be converted into cyan visible light. For example, when used with an ultraviolet LED chip, the cyan conversion layer 111c may include Ca 4-2x Li x Ce x Si2O7F2, Ca2LuHf2Al3O12 :Ce 3+ Or a combination thereof, so that ultraviolet light can be converted into cyan visible light. For example, when used with an ultraviolet LED chip, the red conversion layer 111r or the green conversion layer 111g may include CdSe, so that ultraviolet light can be converted into red visible light or green visible light. For example, when used with an ultraviolet LED chip, the blue conversion layer 111b may include CdS / ZnS, so that ultraviolet light can be converted into blue visible light. The above-mentioned materials and their combinations are only examples. The present invention may use any materials and their combinations known to ordinary technicians in the technical field to form green units 11g, red units 11r, blue units 11b and cyan units 11c, without being limited thereto.

[0063] Reference Figure 4 , which is a cross-sectional schematic diagram showing a light-emitting diode display device according to some other embodiments of the present invention. As shown in the figure, in some embodiments, the light-emitting diode display device 1 may also include a plurality of spacers 13, and the spacers 13 are disposed between two adjacent ones of the green unit 11g, the red unit 11r, the blue unit 11b and the cyan unit 11c to prevent the two light-emitting units from interfering with each other. In some embodiments, the spacer 13 includes a reflective wall 130 and an absorption wall 131 disposed on the reflective wall 130. Among them, the reflective wall 130 can increase the light utilization rate, and the absorption wall 131 can reduce light leakage. In some embodiments, the reflective wall 130 can be a white resin or metal with reflective properties and no light leakage. For example, the white resin includes polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polystyrene (PS), polypropylene (PP), polyamide (PA), polycarbonate (PC), epoxy resin, silicone resin, etc. For example, the metal can be silver, aluminum, rhodium, silver alloy and a combination thereof. In some embodiments, the light reflective material of the reflective wall 130 may be an oxide, such as TiO2 or other suitable materials, but the present invention is not limited thereto. In some embodiments, the absorbing wall 131 may include a black matrix photoresist having light absorption properties and improving color contrast values. For example, the black matrix photoresist may be a metal chrome (chrome, Cr) black matrix photoresist, a resin-type black matrix photoresist, a graphite black matrix photoresist or other suitable materials, but the present invention is not limited thereto. In some embodiments, the light transmittance of the reflective wall 130 or the absorbing wall 131 is less than 5%.

[0064] Reference Figure 5 and Figure 6 , which are cross-sectional schematic diagrams showing light emitting diode display devices according to some other embodiments of the present invention. Figure 5As shown, in some embodiments, the light-emitting diode display device 1 may further include a distributed Bragg reflector (DBR) 14, and the distributed Bragg reflector 14 is disposed on the green unit 11g, the red unit 11r, the blue unit 11b, and the cyan unit 11c. Specifically, the distributed Bragg reflector 14 includes a plurality of film layers stacked in sequence, and the plurality of film layers have different refractive indices. The ultraviolet light that is not completely converted into visible light is reflected back by the distributed Bragg reflector 14, and the red conversion layer 111r, the green conversion layer 111g, the blue conversion layer 111b, and the cyan conversion layer 111c are excited again, thereby improving the conversion efficiency of each color conversion layer. Figure 6 As shown, in some embodiments, the light emitting diode display device 1 may be provided with a plurality of spacers 13 and a distributed Bragg reflector layer 14 at the same time, so as to further enhance the optical properties of the light emitted by the LED chip.

[0065] Continue to refer to Figure 1 In some embodiments, a plurality of green cells 11g, a plurality of red cells 11r, a plurality of blue cells 11b, and a plurality of cyan cells 11c are arranged and extended along a first direction D1 and a second direction D2 perpendicular to the first direction D1. Since the human eye is more sensitive to green visible light, the density of pixel information seen by the human eye can be effectively improved by increasing the number of green cells 11g. In other words, in the light-emitting diode display device 1 of the present invention, the number of green cells 11g can be greater than the number of red cells 11r, the number of green cells 11g can be greater than the number of blue cells 11b, and the number of green cells 11g can be greater than the number of cyan cells 11c, so as to achieve a better display effect while realizing a wide color gamut.

[0066] In some embodiments, the density of pixel information seen by the human eye can be effectively increased by reducing the spacing between the green units 11g. Figure 1 As shown, in the first direction D1, the minimum spacing P between two adjacent green cells 11g can be sub_g Smaller than the minimum spacing P between two adjacent red cells 11r sub_r , so that the minimum spacing P between two adjacent green cells 11g sub_g Smaller than the minimum spacing P between two adjacent blue cells 11b sub_b and make the minimum spacing P between two adjacent green cells 11g sub_g is smaller than the minimum pitch P between two adjacent cyan cells 11c. sub_c .

[0067] As mentioned above, the human eye's recognition of color images can be roughly divided into the borrowed color mechanism and the visual limit mechanism. Taking the human eye viewing a display device as an example, the borrowed color mechanism and the visual limit mechanism are related to the stripe spacing and the distance between the human eye and the display. When the stripe spacing is P and the distance between the human eye and the display is D, the angular frequency can be defined as On the other hand, the number of black and white stripe cycles per degree that can be recognized by the human eye is defined as spatial frequency, and the unit of spatial frequency is CPD (cycles per degree). When the angular frequency (f(P)) meets the specific spatial frequency (CPD), the above-mentioned color borrowing mechanism and visual limit mechanism can be realized. In other words, the effects of color borrowing and light mixing can be achieved by adjusting the minimum spacing between adjacent units.

[0068] Also refer to Figure 1 and Figure 7 ,in Figure 7 1 is a schematic diagram showing a color borrowing mechanism according to some embodiments of the present invention. First, consider the color borrowing mechanism. When the angular frequency f(P) of the light emitting unit is between 15CPD and 30CPD, the color borrowing mechanism can be realized. Therefore, in order to make the red unit 11r, the blue unit 11b and the cyan unit 11c on the display device respectively lend color to the surrounding green unit 11g (such as Figure 7 As shown by the dotted arrow), the minimum spacing P between two adjacent red cells 11r can be adjusted. sub_r , the minimum spacing P between two adjacent blue cells 11b sub_b and the minimum spacing P between two adjacent cyan cells 11b sub_c , so that the minimum spacing is between 15 CPD and 30 CPD. In some embodiments, only the minimum angular frequency min{f(P sub_r ),f(P sub_b ),f(P sub_c )} is between 15CPD and 30CPD. Therefore, the color borrowing mechanism in the application of the present invention can be expressed as the following relationship (I):

[0069] 15CPD≤min{f(P sub_r ),f(P sub_b ),f(P sub_c )}≤30CPD

[0070] Next, consider the visual limit mechanism. When the angular frequency f(P) of the light-emitting unit is between 30CPD and 60CPD, the visual limit mechanism can be realized. Therefore, in order to achieve the effect of mixing light for the red unit 11r, the blue unit 11b, the cyan unit 11c and the green unit 11g on the display, the minimum spacing P between two adjacent red units 11r can be set tosub_r , the minimum spacing P between two adjacent blue cells 11b sub_b , the minimum spacing P between two adjacent cyan cells 11b sub_c and the minimum spacing P between two adjacent green cells 11g sub_g In some embodiments, since the minimum spacing P between two adjacent green cells 11g in the first direction D1 is sub_g Minimum, so only consider the angle frequency f(P sub_g ) is between 30CPD and 60CPD. Therefore, the visual limit mechanism in the application of the present invention can be expressed as the following relational formula (II):

[0071] 30CPD≤f(P sub_g )≤60CPD

[0072] As mentioned above, in order to satisfy both the color borrowing mechanism and the visual limit mechanism, the minimum spacing between the red cells 11r, the blue cells 11b, and the cyan cells 11c can be made to meet the relationship (I), and the minimum spacing between the green cells 11g can be made to meet the relationship (II). In this way, the minimum spacing between the red cells 11r, the blue cells 11b, the cyan cells 11c, and the green cells 11g in the present invention satisfies the following relationship (III):

[0073]

[0074] By making the number and configuration of the green unit 11g, the red unit 11r, the blue unit 11b and the cyan unit 11c in the display device conform to the above mechanism (or relationship), the present invention realizes a light-emitting diode display device 1 with a wide color gamut and excellent display effect. In the following, multiple specific embodiments and other additional advantageous effects will be provided to make the present invention more clear and easy to understand.

[0075] Continue to refer to Figure 1 , and refer to Figure 8 . Figure 8 yes Figure 1 As shown in the figure, in some embodiments, a plurality of green units 11g, a plurality of red units 11r, a plurality of blue units 11b and a plurality of cyan units 11c may constitute a plurality of minimal repeat units U1, and the plurality of minimal repeat units U1 are periodically arranged on the substrate 10.

[0076] In order to effectively increase the density of pixel information seen by the human eye, the number G of green units 11g, the number R of red units 11r, the number B of blue units 11b, and the number C of cyan units 11c in each minimum repeating area U1 can satisfy G>C≥R≥B. Compared with an LED display device in which the number of light-emitting units is equal, by maximizing the number G of green units 11g, the total number of light-emitting units can be reduced while maintaining the display effect, thereby reducing costs. Figure 1 and Figure 8 In the embodiment of the present invention, the minimum repeat region U1 is a rectangle, but the present invention is not limited thereto. In other embodiments, the minimum repeat region may be a rhombus, rectangle, triangle, polygon, circle or other suitable shapes, at least some of which will be described in detail below.

[0077] In some embodiments, the minimum repeating region U1 has an area Su, and each of the green unit 11g, the red unit 11r, the blue unit 11b, and the cyan unit 11c has a light emitting area S g , luminous area S r , luminous area S b And the luminous area S c In some embodiments, the light emitting areas of light emitting units of different colors are the same. For example, S g =S r =S b =S c Therefore, the size and luminous efficiency of each light-emitting unit of the light-emitting diode display device 1 of the present invention are the same, so that the life of each light-emitting unit is equivalent and the design difficulty is reduced.

[0078] In some embodiments, the proportion of the total light-emitting area of ​​the light-emitting unit in the minimum overlapping area U1 is defined as "aperture ratio A", which can be expressed as the following relation (IV):

[0079]

[0080] Wherein, G, R, B and C are respectively the number of green units 11g, the number of red units 11r, the number of blue units 11b and the number of cyan units 11c in the minimum repeating area U1. Compared with a liquid crystal display (LCD) whose aperture ratio is designed to be as high as 30% to 90%, the present invention can provide a lower aperture ratio A, which is conducive to the inspection and repair of the light-emitting units in the light-emitting diode display device 1. In some embodiments, the aperture ratio A of the light-emitting diode display device 1 of the present invention is less than 30%.

[0081] like Figure 8As shown, in order to satisfy the borrowing color mechanism in space, the minimum repeating area U1 in the light-emitting diode display device 1 can be divided into a plurality of spatial sub-areas (for example, spatial sub-area US1-1 and spatial sub-area US1-2). In the present invention, the term "spatial sub-area" refers to the minimum display area spatially related to the borrowing color mechanism, and each spatial sub-area is composed of at least two units (for example, at least two arbitrary light-emitting units among the green unit 11g, the red unit 11r, the blue unit 11b and the cyan unit 11c). For the borrowing color mechanism, each minimum repeating area U1 includes at least one spatial sub-area composed of green units 11g of the same color (hereinafter referred to as the main spatial sub-area), and includes at least one spatial sub-area composed of other light-emitting units (for example, the red unit 11r, the blue unit 11b and the cyan unit 11c) (hereinafter referred to as the borrowing color spatial sub-area). In some embodiments, the main spatial sub-area and the borrowing color spatial sub-area can be partially overlapped to make the effect of the borrowing color mechanism more significant.

[0082] by Figure 8 For example, the minimum repeating area U1 includes a space sub-area US1-1 and a space sub-area US1-2. Among them, the space sub-area US1-1 is a main space sub-area, which is composed of four green units 11g. The space sub-area US1-2 is a borrowed color space sub-area, which is composed of two cyan units 11c, one red unit 11r and one blue unit 11b. Therefore, for Figure 8 For the embodiment of FIG. 1 , the number ratio of the red unit 11 r , the green unit 11 g , the blue unit 11 b , and the cyan unit 11 c in the minimum repeating area U1 is 1:4:1:2.

[0083] Reference Fig. 9 , which is a schematic diagram showing the operation flow of the light-emitting diode display device according to some embodiments of the present invention. As shown in the figure, in some embodiments, the light-emitting diode display device 1 also includes a controller 12, and the controller 12 can perform color processing on the input image I to improve the display resolution of the light-emitting diode display device 1. Since the ratio of the light-emitting units of various colors in the minimum repetitive area U1 is no longer 1:1:1 (R:G:B) similar to the traditional units, in application, color processing can be performed in advance according to the ratio of the light-emitting units of each color through an algorithm. Finally, the image information is transmitted to the light-emitting units in the minimum repetitive area U1 according to the calculated result to display the complete image. In some embodiments, the algorithm can use common sub-pixel rendering technology. For example, color processing includes using a transformation matrix M to transform the input signal V(R,G,B) in Converted into output signal V(R,G,B,C) out , and the matrix conversion equation is V(R,G,B,C) out =M·V(R,G,B)in . Among them, V(R,G,B,C) out is a 4×1 matrix, M is a 4×3 matrix, and V(R,G,B) in is a 3×1 matrix. The above matrix conversion equation can be expressed as:

[0084]

[0085] Among them, the matrix on the left is V(R,G,B,C) out , the middle matrix is ​​M, and the matrix on the right is V(R,G,B) in The 12 values ​​in M ​​of the matrix conversion equation (ie, r1-r3, g1-g3, b1-b3 and c1-c3) represent conversion coefficients for converting the RGB three-color point to the RGBC four-color point.

[0086] Reference Fig. 10A and Fig. 10B , which are schematic diagrams of displaying time sub-areas according to some embodiments of the present invention. In order to satisfy the borrowing color mechanism in time and reduce current consumption, the light-emitting units can be further made to emit light in turn (for example, through timing control) through the principle of human visual persistence. In some embodiments, the green unit 11g, the red unit 11r, the blue unit 11b and the cyan unit 11c constitute a plurality of time sub-areas, and the controller 12 controls the plurality of time sub-areas to be displayed in turn in a time sequence. In the present invention, the term "time sub-area" refers to the smallest display area that is related to the borrowing color mechanism in time. It is worth mentioning that in order to satisfy the borrowing color mechanism, each time sub-area is centered on a green unit 11g, and is coordinated with the central green unit 11g through other surrounding units (for example, the red unit 11r, the blue unit 11b and / or the cyan unit 11c).

[0087] by Fig. 10A and Fig. 10B For example. First, Fig. 10A As shown in (a), the time sub-area UT1-1 is lit. The time sub-area UT1-1 is composed of a green cell 11g as the center and a red cell 11r, a blue cell 11b and a cyan cell 11c around it. Fig. 10A As shown in (b), the time sub-area UT1-2 is lit within the time difference that cannot be detected by the human eye (i.e., visual persistence). The time sub-area UT1-2 is composed of another green unit 11g as the center and a red unit 11r, a blue unit 11b and a cyan unit 11c around it. Fig. 10B As shown, follow these steps in order until Fig. 10BAs shown, the time sub-areas UT1-1 to UT1-4 are illuminated. For example, the time sub-areas UT1-1 to UT1-4 may be illuminated in sequence with a time difference of less than 1 / 16 second, but the present invention is not limited thereto.

[0088] By means of the specific spatial configuration of the light-emitting unit (spatial sub-region) and the specific temporal control of the light-emitting unit (temporal sub-region) as described above, the light-emitting diode display device of the present invention has low energy consumption, low cost and excellent display effect.

[0089] Reference Figures 11 to 15 , which are schematic diagrams showing the minimum repeating area and spatial sub-area of ​​a light-emitting diode display device according to some other embodiments of the present invention. Figure 1 and Figure 8 Compared with the embodiment shown in the figure, the difference lies in the different arrangement of the light-emitting units, thereby forming different minimum repeating areas and spatial sub-areas. Fig.11 In the embodiment of FIG. 1 , the minimum repeating area U2 is a rectangle, which includes eight green cells 11g, two red cells 11r, two blue cells 11b and four cyan cells 11c. Fig.11 For the embodiment, the ratio of the number of red cells 11r, green cells 11g, blue cells 11b and cyan cells 11c in the minimum repeating area U2 is 1:4:1:2. Among them, four of the eight green cells 11g constitute a rectangular space sub-area US2-1, and the other four constitute a rectangular space sub-area US2-2. Four cyan cells 11c constitute a rectangular space sub-area US2-3, and two red cells 11r and two blue cells 11b constitute a rectangular space sub-area US2-4.

[0090] exist Fig.12 In the embodiment of FIG. 1 , the minimum repeating area U3 is a rectangle, which includes four green cells 11g, one red cell 11r, one blue cell 11b and two cyan cells 11c. Fig.12 For the embodiment, the ratio of the number of red cells 11r, green cells 11g, blue cells 11b and cyan cells 11c in the minimum repeating area U3 is 1:4:1:2. Among them, four green cells 11g constitute a rectangular space sub-area US3-1, and one red cell 11r, one blue cell 11b and two cyan cells 11c constitute a rectangular space sub-area US3-2.

[0091] exist Fig.13 In the embodiment of FIG. 1 , the minimum repeating region U4 is a diamond shape, which includes two green cells 11g, one red cell 11r, one blue cell 11b and one cyan cell 11c. Fig.13In the embodiment, the ratio of the number of red cells 11r, green cells 11g, blue cells 11b and cyan cells 11c in the minimum repeating area U4 is 1:2:1:1. Two green cells 11g form a rectangular space sub-area US4-1, and one red cell 11r, one blue cell 11b and one cyan cell 11c form a rectangular space sub-area US4-2.

[0092] exist Fig.14 In the embodiment of FIG. 1 , the minimum repeating region U5 is a diamond shape, which includes three green cells 11g, one red cell 11r, one blue cell 11b and one cyan cell 11c. Fig.14 For the embodiment, the number ratio of the red unit 11r, the green unit 11g, the blue unit 11b and the cyan unit 11c in the minimum repeating area U5 is 1:3:1:1. Among them, three green units 11g constitute a triangular space sub-area US5-1, and one red unit 11r, one blue unit 11b and one cyan unit 11c constitute a rectangular space sub-area US5-2.

[0093] exist Fig.15 In the embodiment of FIG. 1 , the minimum repeating area U6 is a rectangle, which includes six green cells 11g, two red cells 11r, two blue cells 11b and two cyan cells 11c. Fig.15 In the embodiment, the ratio of the number of red cells 11r, green cells 11g, blue cells 11b and cyan cells 11c in the minimum repeating area U6 is 1:3:1:1. Among them, six green cells 11g constitute a pentagonal space sub-area US6-1, two blue cells 11b and two cyan cells 11c constitute a rectangular space sub-area US6-2, and two red cells 11r constitute a rectangular space sub-area US6-3.

[0094] As long as the components between the embodiments of the present invention do not violate the spirit of the invention or conflict with each other, they can be mixed and matched for use at will. In addition, the scope of protection of the present invention is not limited to the manufacturing process, machine, manufacture, material composition, device, method and steps in the specific embodiment described in the specification. Any person of ordinary knowledge in the art can understand the current or future developed manufacturing process, machine, manufacture, material composition, device, method and steps from the disclosure of the present invention. As long as substantially the same function can be implemented in the embodiments described herein or substantially the same result can be obtained, they can be used according to the present invention. Therefore, the scope of protection of the present invention includes the above-mentioned manufacturing process, machine, manufacture, material composition, device, method and steps. Any embodiment or claim of the present invention does not need to achieve all the purposes, advantages and / or features disclosed in the present invention.

[0095] Several embodiments are summarized above so that those of ordinary skill in the art can better understand the concepts of the embodiments of the present invention. It should be understood by those of ordinary skill in the art that other manufacturing processes and structures can be designed or modified based on the embodiments of the present invention to achieve the same purposes and / or advantages as the embodiments introduced herein. It should also be understood by those of ordinary skill in the art that such equivalent manufacturing processes and structures do not deviate from the spirit and scope of the present invention, and various changes, substitutions and replacements can be made without violating the spirit and scope of the present invention.

Claims

1. A light emitting diode display device, comprising: substrate; as well as A plurality of green units, a plurality of red units, a plurality of blue units and a plurality of cyan units are periodically arranged on the substrate; The number of the green units is greater than the number of the red units, the number of the green units is greater than the number of the blue units, and the number of the green units is greater than the number of the cyan units.

2. The light emitting diode display device as claimed in claim 1, wherein in one direction, the minimum spacing P between two adjacent ones of the green units is sub_g is smaller than the minimum spacing P between two adjacent red cells. sub_r , the minimum spacing P between two adjacent green cells sub_g is smaller than the minimum spacing P between two adjacent blue cells. sub_b , and the minimum spacing P between two adjacent green cells sub_g is smaller than the minimum spacing P between two adjacent cyan cells. sub_c .

3. The light emitting diode display device as claimed in claim 2, wherein the minimum spacing P between two adjacent ones of the green units is sub_g The minimum spacing P between two adjacent red cells sub_r , the minimum spacing P between two adjacent blue cells sub_g And the minimum spacing P between two adjacent cyan cells sub_c The following relationship is satisfied:

4. The light emitting diode display device as claimed in claim 1 , wherein the periodically arranged green units, the red units, the blue units and the cyan units constitute a plurality of minimal repeat units, and the number of green units G, the number of red units R, the number of blue units B and the number of cyan units C in each of the minimal repeat units satisfy the following relationship: G>C≥R≥B. 5 . The light emitting diode display device as claimed in claim 1 , wherein the periodically arranged green units, the red units, the blue units and the cyan units constitute a plurality of minimal repeat units, and an aperture ratio of the minimal repeat units is less than 30%.

6. The light emitting diode display device as claimed in claim 1, wherein the periodically arranged green units, the red units, the blue units and the cyan units constitute a plurality of minimal repeat units, and each of the minimal repeat units includes a plurality of spatial sub-units, wherein each of the spatial sub-units includes at least two of the green units, the red units, the blue units and the cyan units. 7 . The light emitting diode display device as claimed in claim 6 , wherein the spatial sub-regions in each of the minimum repeating regions partially overlap.

8. The light emitting diode display device as claimed in claim 1, further comprising a controller, the controller performing color processing on an input signal.

9. The light emitting diode display device as claimed in claim 8, wherein the green units, the red units, the blue units and the cyan units constitute a plurality of time sub-areas, wherein each of the time sub-areas includes at least one green unit, and the controller controls the time sub-areas to display in turn in a time sequence.

10. The light emitting diode display device as claimed in claim 8, wherein the color processing comprises converting the input signal V(R, G, B) by using a conversion matrix M in Converted into output signal V(R,G,B,C) out The matrix conversion equation is as follows: V(R,G,B,C) out =M·V(R,G,B) in , in, V(R,G,B,C) out is a 4×1 matrix, M is a 4×3 matrix, V(R,G,B) in is a 3×1 matrix.

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