Display device and repair method of display device

Abstract

A display device includes first, second, and third sub-pixels. Each of the first, second, and third sub-pixels has a preset light emitting area and a repair area. The first sub-pixel includes a first light emitting element and a first repair light emitting element disposed in the preset light emitting area and the repair area, respectively. The second sub-pixel includes a second repair light emitting element disposed in the repair area. The third sub-pixel includes a third light emitting element disposed in the preset light emitting area. The first light emitting element, the first repair light emitting element, the second repair light emitting element, and the third light emitting element are light emitting elements having the same light emitting color.

Description

Technical Field

[0001] This invention relates to a display device and a method for repairing the display device. Background Technology

[0002] Mass transfer technology aims to transfer a large number of micro light-emitting diodes (μLEDs) from a growth substrate or interposer to specific locations on a display panel, which is crucial for the production of high-resolution displays. μLEDs offer advantages such as high brightness, low power consumption, and high contrast, and do not require a backlight, making them a potential candidate for next-generation display technology.

[0003] However, whether due to inherent defects in the micro-LEDs themselves or errors in the mass transfer manufacturing process, pixels in the display panel may malfunction, affecting the display quality. Therefore, to address these issues, repairing damaged or misaligned micro-LEDs has become crucial for the development of micro-LED display technology. Summary of the Invention

[0004] The present invention provides a display device and a method for repairing the display device, which can repair damaged sub-pixels.

[0005] At least one embodiment of the present invention provides a display device including a first sub-pixel, at least one second sub-pixel, and a third sub-pixel. The first sub-pixel has a first preset light-emitting area and a first maintenance area, and includes a first light-emitting element and a first repair light-emitting element respectively disposed in the first preset light-emitting area and the first maintenance area. The first light-emitting element and the first repair light-emitting element are arranged in parallel. The second sub-pixel has a second preset light-emitting area and a second maintenance area, and includes a second repair light-emitting element disposed in the second maintenance area. No light-emitting diodes are disposed in the second preset light-emitting area, or a faulty second light-emitting element is disposed therein. The third sub-pixel has a third preset light-emitting area and a third maintenance area. The second sub-pixel is located between the first sub-pixel and the third sub-pixel in a first direction. The third sub-pixel includes a third light-emitting element disposed in the third preset light-emitting area. No light-emitting diodes are disposed in the third maintenance area. The first light-emitting element, the first repair light-emitting element, the second repair light-emitting element, and the third light-emitting element are light-emitting elements of the same color. The first preset light-emitting area, the first maintenance area, the second preset light-emitting area, the second maintenance area, the third preset light-emitting area, and the third maintenance area are arranged along a first direction.

[0006] At least one embodiment of the present invention provides a method for repairing a display device, comprising providing a circuit board including a first, second, and third sub-pixel region. The first sub-pixel region has a first preset light-emitting region and a first repair region. The second sub-pixel region has a second preset light-emitting region and a second repair region. The third sub-pixel region has a third preset light-emitting region and a third repair region. A first light-emitting element, a second light-emitting element, and a third light-emitting element are respectively transferred onto the first preset light-emitting region, the second preset light-emitting region, and the third preset light-emitting region. A test procedure is performed on the first light-emitting element, the second light-emitting element, and the third light-emitting element. The second light-emitting element is faulty, while the first light-emitting element and the third light-emitting element emit light during the test procedure. A first repair light-emitting element and a second repair light-emitting element are respectively transferred onto the first repair region and the second repair region. Attached Figure Description

[0007] Figures 1A to 1D This is a top view schematic diagram of a method for manufacturing a display device according to an embodiment of the present invention;

[0008] Figure 2 This is a top view schematic diagram of a display device according to an embodiment of the present invention;

[0009] Figure 3 This is a top view schematic diagram of a display device according to an embodiment of the present invention;

[0010] Figure 4 , Figure 5 as well as Figure 6 This is a partial top view schematic diagram of different areas of a display device according to an embodiment of the present invention;

[0011] Figures 7A to 7D This is a top view schematic diagram of a method for manufacturing a display device according to an embodiment of the present invention;

[0012] Figures 8A to 8B This is a top view schematic diagram of a method for manufacturing a display device according to an embodiment of the present invention;

[0013] Figure 9 This is a circuit diagram of a sub-pixel according to an embodiment of the present invention.

[0014] Symbol Explanation

[0015] 10, 20, 30, 40, 50, 60: Display devices

[0016] BL:C type preset light area

[0017] BL1: First Class C Preset Illumination Area

[0018] BL2: Second Class C Preset Illumination Area

[0019] BL3: Third Class C Preset Illumination Area

[0020] BLD: Class C light-emitting element

[0021] BLD1: Class C light-emitting element

[0022] BLD2: Class C light-emitting element

[0023] BLD3: Class C light-emitting element

[0024] BM: Black Matrix

[0025] BR: Class C Repair Area

[0026] BR1: Category C Repair Area

[0027] BR2: Category C Repair Area

[0028] BR3: Category C Repair Area

[0029] BRD1: Category C Repair of Light-Emitting Elements

[0030] BRD2: Category C Repair of Light-Emitting Elements

[0031] BSP: Class C subpixel area

[0032] BSP1: First C-type sub-pixel region

[0033] BSP2: Second C-type sub-pixel region

[0034] BSP3: Third C-type subpixel region

[0035] BSP': Class C subpixels

[0036] DR1: First Direction

[0037] DR2: Second Direction

[0038] GL:B type preset illumination area

[0039] GL1: First Class B Preset Illumination Area

[0040] GL2: Second Class B Preset Illumination Area

[0041] GL3: Third Class B Preset Illumination Area

[0042] GLD: Class B light-emitting element

[0043] GLD1: Class B light-emitting element

[0044] GLD2: Class B light-emitting element

[0045] GLD3: Class B light-emitting element

[0046] GR: Class B Repair Area

[0047] GR1: Category B Repair Area

[0048] GR2: Category B Repair Area

[0049] GR3: Category B Repair Area

[0050] GRD1: Class B Repair of Light-Emitting Elements

[0051] GRD2: Type B Repair of Light-Emitting Elements

[0052] GSP: Class B subpixel region

[0053] GSP1: First Class B Subpixel Region

[0054] GSP2: Second Class B Subpixel Region

[0055] GSP3: Third Class B Subpixel Region

[0056] GSP': Class B subpixels

[0057] GSP1': First Class B subpixel

[0058] GSP2': Second Class B subpixel

[0059] GSP3': Third Class B subpixel

[0060] h,p,w,q: Length

[0061] L: Preset illumination area

[0062] LD: Light-emitting element

[0063] R: Repair Area

[0064] RD: Repairing LEDs

[0065] RL: Class A Preset Illumination Area

[0066] RL1: First Class A Preset Illumination Area

[0067] RL2: Second Class A Preset Illumination Area

[0068] RL3: Third Class A Preset Emitting Area

[0069] RL4: Class 4 Preset Illumination Area

[0070] RL5: Fifth Class A Preset Emitting Area

[0071] RL6: Sixth Class A Preset Illumination Area

[0072] RLD: Class A light-emitting element

[0073] RLD1: Class A light-emitting element

[0074] RLD2: Class A light-emitting element

[0075] RLD3: Class A Light Emitting Element

[0076] RLD4: Class A light-emitting element

[0077] RLD5: Class 5 A light-emitting element

[0078] RLD6: Class VI A light-emitting element

[0079] RR: Class A Repair Area

[0080] RR1: Category A Repair Area

[0081] RR2: Category A Repair Area

[0082] RR3: Category A Repair Area

[0083] RR4: Category A Repair Area

[0084] RR5: Fifth Class A Repair Area

[0085] RR6: Category 6A Repair Area

[0086] RRD1: Class A Repair of Light Emitting Element

[0087] RRD2: Class II A Repair of Light Emitting Components

[0088] RSP: Class A subpixel region

[0089] RSP1: First Class A sub-pixel region

[0090] RSP2: Second Class A sub-pixel region

[0091] RSP3: Third Class A Subpixel Region

[0092] RSP4: Fourth Type A Subpixel Region

[0093] RSP5: Fifth Class A Subpixel Region

[0094] RSP6: Sixth Class A Subpixel Region

[0095] RSP': Class A subpixels

[0096] RSP1': First Class A subpixel

[0097] RSP2': Second Class A subpixel

[0098] RSP3': Third Class A subpixel

[0099] RSP4': Fourth Class A subpixel

[0100] RSP5': Fifth Class A subpixel

[0101] RSP6': Sixth Class A subpixel

[0102] SP: Subpixel

[0103] V1: First voltage signal

[0104] V2: Second voltage signal Detailed Implementation

[0105] In this document, the terms "first," "second," and "third" are used only to distinguish different elements or regions and do not limit these elements or regions. On the other hand, the terms "Class A," "Class B," and "Class C" are used only to distinguish the colors corresponding to different elements or regions. For example, one of "Class A," "Class B," and "Class C" can represent red, another green, and the last blue. The terms "first," "second," and "third," as well as "Class A," "Class B," and "Class C" used herein, can be omitted without departing from the scope of this invention. For example, "first Class A sub-pixel" can also be simply referred to as "first sub-pixel," "Class A sub-pixel," or simply "sub-pixel."

[0106] Figures 1A to 1D This is a top view schematic diagram illustrating a method for manufacturing a display device 10 according to an embodiment of the present invention. Please refer to... Figure 1A A circuit board 100 is provided. The circuit board 100 includes a plurality of Class A sub-pixel regions ( Figure 1A The diagram shows a first type A subpixel area RSP1, a second type A subpixel area RSP2, a third type A subpixel area RSP3, a fourth type A subpixel area RSP4, a fifth type A subpixel area RSP5, and a sixth type A subpixel area RSP6, multiple type B subpixel areas GSP, and multiple type C subpixel areas BSP. In some embodiments, viewed from a top view, these subpixel areas are separated from each other by a black matrix BM or other light-shielding structures, thereby reducing interference between different subpixels.

[0107] Each of the Class A subpixel areas has a Class A preset luminous area and a Class A repair area. For example, the first Class A subpixel area RSP1 has a first Class A preset luminous area RL1 and a first Class A repair area RR1; the second Class A subpixel area RSP2 has a second Class A preset luminous area RL2 and a second Class A repair area RR2; the third Class A subpixel area RSP3 has a third Class A preset luminous area RL3 and a third Class A repair area RR3; the fourth Class A subpixel area RSP4 has a fourth Class A preset luminous area RL4 and a fourth Class A repair area RR4; the fifth Class A subpixel area RSP5 has a fifth Class A preset luminous area RL5 and a fifth Class A repair area RR5; and the sixth Class A subpixel area RSP6 has a sixth Class A preset luminous area RL6 and a sixth Class A repair area RR6.

[0108] Each of the Class B subpixel areas GSP has a Class B preset light-emitting area GL and a Class B maintenance area GR. Each of the Class C subpixel areas BSP has a Class C preset light-emitting area BL and a Class C maintenance area BR.

[0109] In some embodiments, each sub-pixel region of the circuit substrate 100 corresponds to a sub-pixel driving circuit, and each sub-pixel driving circuit includes one or more thin film transistors (T) and one or more capacitors (C). For example, the sub-pixel driving circuit may have a 1T1C architecture, a 2T1C architecture, a 3T1C architecture, a 3T2C architecture, a 4T1C architecture, a 4T2C architecture, a 5T1C architecture, a 5T2C architecture, a 6T1C architecture, a 6T2C architecture, a 7T2C architecture, or any possible architecture, and drive the light-emitting element on the sub-pixel region to emit light through such a driving circuit.

[0110] Please refer to Figure 1B Multiple Class A light-emitting elements ( Figure 1B The circuit board 100 is shown to have a first type A light-emitting element (RLD1), a second type A light-emitting element (RLD2), a third type A light-emitting element (RLD3), a fourth type A light-emitting element (RLD4), a fifth type A light-emitting element (RLD5), and a sixth type A light-emitting element (RLD6), multiple type B light-emitting elements (GLD), and multiple type C light-emitting elements (BLD) transferred onto the circuit board 100 through one or more mass transfer fabrication processes, and respectively disposed in corresponding preset light-emitting areas. Figure 1A and Figure 1B In the diagram, the areas without light-emitting elements are depicted with dashed outlines, while the areas with light-emitting elements are depicted with solid outlines.

[0111] Type A light-emitting elements, Type B light-emitting elements (GLD), and Type C light-emitting elements (BLD) are all light-emitting diodes of different colors. In some embodiments, Type A light-emitting elements, Type B light-emitting elements (GLD), and Type C light-emitting elements (BLD) are red light-emitting diodes, green light-emitting diodes, and blue light-emitting diodes, respectively, but the present invention is not limited thereto. In other embodiments, Type A light-emitting elements are green or blue light-emitting diodes, Type B light-emitting elements (GLD) are red or blue light-emitting diodes, and Type C light-emitting elements (BLD) are red or green light-emitting diodes.

[0112] In this embodiment, the first type A light-emitting element RLD1, the second type A light-emitting element RLD2, the third type A light-emitting element RLD3, the fourth type A light-emitting element RLD4, the fifth type A light-emitting element RLD5, and the sixth type A light-emitting element RLD6 are respectively transferred to the first type A preset light-emitting area RL1, the second type A preset light-emitting area RL2, the third type A preset light-emitting area RL3, the fourth type A preset light-emitting area RL4, the fifth type A preset light-emitting area RL5, and the sixth type A preset light-emitting area RL6. The type B light-emitting element GLD is transferred to the type B preset light-emitting area GL, and the type C light-emitting element BLD is transferred to the type C preset light-emitting area BL.

[0113] These light-emitting elements are bonded to the circuit board 100 using solder, conductive adhesive, or other materials, thereby enabling the sub-pixel driving circuit within the circuit board 100 to drive these light-emitting elements. However, some light-emitting elements may malfunction due to inherent defects or misalignment during the transfer fabrication process. The following describes the repair fabrication process for Class A light-emitting elements.

[0114] Please refer to Figure 1C A test procedure was performed on four types of light-emitting elements: RLD1 (Class A), RLD2 (Class A), RLD3 (Class A), RLD4 (Class A), RLD5 (Class A), and RLD6 (Class A). The test procedure revealed that RLD2 was a faulty element, while RLD1, RLD3, RLD4, RLD5, and RLD6 emitted light during the test (e.g., they emitted light of the expected wavelength and brightness).

[0115] exist Figure 1C In the image, faulty light-emitting elements are marked with an "X". Although in Figures 1C to 1DIn this invention, the faulty second type A light-emitting element RLD2 is placed on the second type A preset light-emitting area RL2, but this invention is not limited thereto. In fact, due to the shift in the transfer manufacturing process, there may be no light-emitting element (i.e., light-emitting diode) in the second type A preset light-emitting area RL2.

[0116] Please refer to Figure 1D The first Class A repair light-emitting element RRD1 and the second Class A repair light-emitting element RRD2 are transferred to the first Class A repair area RR1 and the second Class A repair area RR2, respectively, thereby completing the repair of the Class A light-emitting element.

[0117] In this embodiment, the display device 10 includes a plurality of Class A subpixels ( Figure 1D It displays the first A-class sub-pixel RSP1', the second A-class sub-pixel RSP2', the third A-class sub-pixel RSP3', the fourth A-class sub-pixel RSP4', the fifth A-class sub-pixel RSP5', and the sixth A-class sub-pixel RSP6', multiple B-class sub-pixels GSP', and multiple C-class sub-pixels BSP'.

[0118] The first Class A sub-pixel RSP1' has a first Class A preset light-emitting area RL1 and a first Class A repair area RR1, and includes a first Class A light-emitting element RLD1 and a first Class A repair light-emitting element RRD1 respectively disposed in the first Class A preset light-emitting area RL1 and the first Class A repair light-emitting element RRD1. The first Class A light-emitting element RLD1 and the first Class A repair light-emitting element RRD1 are connected in parallel. Specifically, the anode of the first Class A light-emitting element RLD1 is electrically connected to the anode of the first Class A repair light-emitting element RRD1, and the cathode of the first Class A light-emitting element RLD1 is electrically connected to the cathode of the first Class A repair light-emitting element RRD1. Therefore, the first Class A light-emitting element RLD1 and the first Class A repair light-emitting element RRD1 are simultaneously lit and simultaneously turned off.

[0119] The second type A sub-pixel RSP2' has a second type A preset light-emitting area RL2 and a second type A repair area RR2, and includes a second type A repair light-emitting element RRD2 disposed in the second type A repair area RR2. The second type A preset light-emitting area RL2 either has no light-emitting diodes or has a faulty second type A light-emitting element RLD2 disposed therein.

[0120] In this embodiment, the distance between the second Class A repair light-emitting element RRD2 and the first Class A light-emitting element RLD1 is approximately equal to the length h of the sub-pixel in the first direction DR1 plus the length p of the second Class A preset light-emitting area RL2 or the second Class A repair area RR2 in the first direction DR1. Since the second Class A preset light-emitting area RL2 does not contain a normally emitting light-emitting element, to avoid the formation of dark spots due to excessive distance between the second Class A repair light-emitting element RRD2 and the first Class A light-emitting element RLD1, the first Class A repair light-emitting element RRD1 is still placed on the first Class A repair area RR1, even though the first Class A light-emitting element RLD1 can operate normally. The distance between the second Class A repair light-emitting element RRD2 adjacent to the first Class A sub-pixel RSP1' and the first Class A repair light-emitting element RRD1 of the first Class A sub-pixel RSP1' is substantially equal to the length h of the first Class A sub-pixel RSP1' in the first direction DR1.

[0121] The third type A sub-pixel RSP3' has a third type A preset light-emitting area RL3 and a third type A maintenance area RR3. The third type A sub-pixel RSP3' includes a third type A light-emitting element RLD3 disposed in the third type A preset light-emitting area RL3. The fourth type A sub-pixel RSP4' has a fourth type A preset light-emitting area RL4 and a fourth type A maintenance area RR4. The fourth type A sub-pixel RSP4' includes a fourth type A light-emitting element RLD4 disposed in the fourth type A preset light-emitting area RL4. The fifth type A sub-pixel RSP5' has a fifth type A preset light-emitting area RL5 and a fifth type A maintenance area RR5. The fifth type A sub-pixel RSP5' includes a fifth type A light-emitting element RLD5 disposed in the fifth type A preset light-emitting area RL5. The sixth type A sub-pixel RSP6' has a sixth type A preset light-emitting area RL6 and a sixth type A maintenance area RR6. The sixth type A sub-pixel RSP6' includes a sixth type A light-emitting element RLD6 disposed in the sixth type A preset light-emitting area RL6. In some embodiments, no light-emitting diodes are installed in the third Class A maintenance area to the sixth Class A maintenance area RR3 to RR6.

[0122] The second type A sub-pixel RSP2' is located between the first type A sub-pixel RSP1' and the third type A sub-pixel RSP3' in the first direction DR1. In this embodiment, one second type A sub-pixel RSP2' is located between the first type A sub-pixel RSP1' and the third type A sub-pixel RSP3', but the invention is not limited thereto. In other embodiments, two or more second type A sub-pixels RSP2' are located between the first type A sub-pixel RSP1' and the third type A sub-pixel RSP3'.

[0123] The first Class A preset light-emitting area RL1, the first Class A maintenance area RR1, the second Class A preset light-emitting area RL2, the second Class A maintenance area RR2, the third Class A preset light-emitting area RL3, and the third Class A maintenance area RR3 are arranged sequentially along the first direction DR1, for example, in a single column along the first direction DR1. The fourth Class A preset light-emitting area RL4, the fourth Class A maintenance area RR4, the fifth Class A preset light-emitting area RL5, the fifth Class A maintenance area RR5, the sixth Class A preset light-emitting area RL6, and the sixth Class A maintenance area RR6 are arranged sequentially along the first direction DR1, for example, in another column along the first direction DR1.

[0124] In some embodiments, the fourth type A light-emitting element RLD4, the fifth type A light-emitting element RLD5, and the sixth type A light-emitting element RLD6 are respectively staggered with the first type A light-emitting element RLD1, the second type A light-emitting element RLD2, and the third type A light-emitting element RLD3 in the second direction DR2, thereby avoiding uneven brightness in the displayed image. The second direction DR2 is not parallel to the first direction DR1. For example, the second direction DR2 is perpendicular to the first direction DR1.

[0125] The first A-class light-emitting element RLD1, the first A-class repair light-emitting element RRD1, the second A-class repair light-emitting element RRD2, the third A-class light-emitting element RLD3, the fourth A-class light-emitting element RLD4, the fifth A-class light-emitting element RLD5, and the sixth A-class light-emitting element RLD6 are light-emitting elements of the same color.

[0126] The first A-class light-emitting element RLD1, the third A-class light-emitting element RLD3, the fourth A-class light-emitting element RLD4, the fifth A-class light-emitting element RLD5, and the sixth A-class light-emitting element RLD6 have substantially the same luminous efficiency. The luminous efficiency of the first A-class repair light-emitting element RLD1 and the luminous efficiency of the second A-class repair light-emitting element RLD2 are the same as or different from the luminous efficiencies of the first A-class light-emitting element RLD1, the third A-class light-emitting element RLD3, the fourth A-class light-emitting element RLD4, the fifth A-class light-emitting element RLD5, and the sixth A-class light-emitting element RLD6. For example, the luminous efficiency of the first A-class repair light-emitting element RLD1 is lower than that of the first A-class light-emitting element RLD1, resulting in a lower brightness of the light emitted by the first A-class repair light-emitting element RLD1 than that emitted by the first A-class light-emitting element RLD1. In some embodiments, the luminous efficiency of the second A-class repair light-emitting element RLD2 is also lower than that of the first A-class light-emitting element RLD1. In some embodiments, the luminous efficiency of the first A-class repair light-emitting element RLD1 is lower than or equal to the luminous efficiency of the second A-class repair light-emitting element RLD2. In some embodiments, in addition to using a repair light-emitting element with lower luminous efficiency, the quality of the displayed image is further improved through digital compensation. By using a repair light-emitting element with lower luminous efficiency, the magnitude of digital compensation can be relatively small. The method of digital compensation will be described later.

[0127] In some embodiments, since the first Class A sub-pixel RSP1' includes two light-emitting elements (i.e., the first Class A light-emitting element RLD1 and the first Class A repair light-emitting element RRD1), to avoid bright spots in the first Class A sub-pixel RSP1', the first Class A repair light-emitting element RRD1, which has lower luminous efficiency, is disposed in the first Class A sub-pixel RSP1'. On the other hand, since the spacing between the second Class A repair light-emitting element RRD2 and the third Class A light-emitting element RLD3 is small (approximately equal to the length h of the sub-pixel in the first direction DR1 minus the length p), to avoid bright spots between the second Class A sub-pixel RSP2' and the third Class A sub-pixel RSP3', the second Class A repair light-emitting element RRD2, which has lower luminous efficiency, is disposed in the second Class A sub-pixel RSP2'.

[0128] In some embodiments, the luminous efficiency of the first Class A light-emitting element RLD1, the third Class A light-emitting element RLD3, the fourth Class A light-emitting element RLD4, the fifth Class A light-emitting element RLD5, and the sixth Class A light-emitting element RLD6 is substantially equal to the luminous efficiency of the first Class A repair light-emitting element RRD1 and the second Class A repair light-emitting element RRD2. The maximum brightness of each of the first Class A light-emitting element RLD1, the first Class A repair light-emitting element RRD1, and the second Class A repair light-emitting element RRD2 when displaying a screen on the display device 10 is reduced through digital compensation. For example, a data driving circuit provides a data voltage to each sub-pixel via a data line. A compensation circuit is coupled to the data driving circuit and further provides a digital compensation value based on the level of the data voltage to be output by the data driving circuit. For example, the compensation circuit calculates the digital compensation value of the data voltage provided to different sub-pixels based on the grayscale value transformation requirements of different sub-pixels. Based on the digital compensation value calculated by the compensation circuit, the data driving circuit can generate a digitally compensated data voltage (which may be higher or lower than the standard data voltage).

[0129] In some embodiments, the digital compensation value of the data voltage described above is calculated by the compensation circuit based on a lookup table in the digital compensation table. For example, Table 1 shows... Figure 1D The digital compensation table for Class A subpixels, Figure 1D The digital compensation values ​​for each Class A subpixel are shown in the corresponding positions in Table 1.

[0130] Table 1

[0131] 0.6 1 0.8 1 1 1

[0132] Refer to Table 1 and Figure 1D The digital compensation value of the first A-class sub-pixel RSP1' (e.g., 0.6) is lower than the digital compensation value of the second A-class sub-pixel RSP2' (e.g., 0.8), and the digital compensation value of the second A-class sub-pixel RSP2' is lower than the digital compensation values ​​of the third A-class sub-pixel RSP3', the fourth A-class sub-pixel RSP4', the fifth A-class sub-pixel RSP5', and the sixth A-class sub-pixel RSP6' (e.g., 1). The larger the digital compensation value, the greater the maximum brightness of the corresponding light-emitting element when displaying an image on the display device 10. Reducing the digital compensation value of the first A-class sub-pixel RSP1' can improve the problem of bright spots appearing in the first A-class sub-pixel RSP1', and reducing the digital compensation value of the second A-class sub-pixel RSP2' can improve the problem of bright spots appearing between the second A-class sub-pixel RSP2' and the third A-class sub-pixel RSP3'.

[0133] Figure 2 This is a top view schematic diagram of a display device 20 according to an embodiment of the present invention. It must be noted here that... Figure 2The embodiments follow Figures 1A to 1D The component reference numerals and partial contents of the embodiments are described below, wherein the same or similar reference numerals are used to represent the same or similar components, and descriptions of the same technical content are omitted. For explanations of the omitted parts, please refer to the foregoing embodiments, and will not be repeated here.

[0134] Figure 2 The display device 20 and Figures 1A to 1D The difference in display device 10 is that, in display device 10, the first A-class sub-pixel RSP1', the second A-class sub-pixel RSP2', and the third A-class sub-pixel RSP3' are staggered with the fourth A-class sub-pixel RSP4', the fifth A-class sub-pixel RSP5', and the sixth A-class sub-pixel RSP6' respectively in the second direction DR2. However, in display device 20, the first A-class sub-pixel RSP1', the second A-class sub-pixel RSP2', and the third A-class sub-pixel RSP3' are aligned with the fourth A-class sub-pixel RSP4', the fifth A-class sub-pixel RSP5', and the sixth A-class sub-pixel RSP6' respectively in the second direction DR2.

[0135] Figure 3 This is a top view schematic diagram of a display device 30 according to an embodiment of the present invention. It should be noted that... Figure 2 The embodiments follow Figures 1A to 1D The component reference numerals and partial contents of the embodiments are described below, wherein the same or similar reference numerals are used to represent the same or similar components, and descriptions of the same technical content are omitted. For explanations of the omitted parts, please refer to the foregoing embodiments, and will not be repeated here.

[0136] Figure 3 The display device 30 and Figures 1A to 1D The difference between display device 10 and display device 30 is that in display device 10, two pixels share one type A subpixel RSP', or one type B subpixel GSP', one type C subpixel BSP', and half a type A subpixel constitute one pixel. However, in display device 30, one type B subpixel GSP', one type C subpixel BSP', and one type A subpixel RSP' constitute one pixel.

[0137] The Class A subpixel RSP' has a Class A maintenance area RR and a Class A preset light-emitting area RL, wherein the Class A light-emitting element RLD is disposed on the corresponding Class A preset light-emitting area RL. Figure 3In the diagram, three of the Class A sub-pixels RSP' are labeled as first Class A sub-pixel RSP1', second Class A sub-pixel RSP2', and third Class A sub-pixel RSP3', while three of the Class A light-emitting elements RLD are labeled as first Class A light-emitting element RLD, second Class A light-emitting element RLD2, and third Class A light-emitting element RLD3. The first Class A sub-pixel RSP1' and the second Class A sub-pixel RSP2' respectively include a first Class A repair light-emitting element RRD1 and a second Class A repair light-emitting element RRD2. Optionally, the second Class A sub-pixel RSP2' includes a faulty second Class A light-emitting element RLD2.

[0138] Figure 4 , Figure 5 as well as Figure 6 This is a partial top view schematic diagram of different areas of a display device 40 according to an embodiment of the present invention. For ease of explanation of the repair method for class A subpixels, Figure 4 , Figure 5 as well as Figure 6 Only Class A subpixels in the display device are shown, while Class B and Class C subpixels are omitted.

[0139] Please refer to Figure 4 Two or more repaired second-class A sub-pixels RSP2' are located between the first-class A sub-pixel RSP1' and the third-class A sub-pixel RSP3'. The first-class A sub-pixel RSP1' includes a first-class A light-emitting element RLD1 and a first-class A repaired light-emitting element RRD1. The second-class A sub-pixel RSP2' includes a second-class A repaired light-emitting element RRD2, and optionally includes a faulty second-class A light-emitting element RLD2. The third-class A sub-pixel RSP3' includes a third-class A light-emitting element RLD3.

[0140] In some embodiments, the luminous efficiency of the first Class A light-emitting element RLD1 and the third Class A light-emitting element RLD3 is substantially equal to the luminous efficiency of the first Class A repair light-emitting element RRD1 and the second Class A repair light-emitting element RRD2. The maximum brightness of the first Class A light-emitting element RLD1, the first Class A repair light-emitting element RRD1, and the second Class A repair light-emitting element RRD2, which is closest to the third Class A sub-pixel RSP3' in the first direction DR1, is reduced by digital compensation when displaying a screen on the display device 40.

[0141] For example, Table 2 is Figure 4 The digital compensation table for Class A subpixels, Figure 4 The digital compensation values ​​for each Class A subpixel are shown in the corresponding positions in Table 2.

[0142] Table 2

[0143] 1 0.6 1 1 1 1 1 1 1 1 0.8 1 1 1 1 1

[0144] Refer to Table 2 and Figure 4 The digital compensation value of the first Class A sub-pixel RSP1' (e.g., 0.6) is lower than the digital compensation value of the second Class A sub-pixel RSP2', which is closest to the third Class A sub-pixel RSP3' in the first direction DR1 (e.g., 0.8). Furthermore, the digital compensation value of the second Class A sub-pixel RSP2', which is closest to the third Class A sub-pixel RSP3' in the first direction DR1, is lower than the digital compensation values ​​of the third Class A sub-pixel RSP3' and the other second Class A sub-pixels RSP2' (e.g., 1). Reducing the digital compensation value of the first Class A sub-pixel RSP1' can improve the problem of bright spots appearing in the first Class A sub-pixel RSP1'. Similarly, reducing the digital compensation value of the second Class A sub-pixel RSP2', which is closest to the third Class A sub-pixel RSP3' in the first direction DR1, can improve the problem of bright spots appearing between the second Class A sub-pixel RSP2' and the third Class A sub-pixel RSP3' in the first direction DR1.

[0145] Tables 3 and 4 are respectively Figure 5 as well as Figure 6 The digital compensation table for Class A subpixels, Figure 5 The digital compensation values ​​for each Class A sub-pixel are shown in the corresponding positions in Table 3. Figure 6 The digital compensation values ​​for each Class A subpixel are shown in the corresponding positions in Table 4.

[0146] Table 3

[0147] 1 0.6 1 0.6 1 0.6 1 1 0.8 1 0.8 1 0.8 1 1 1 1

[0148] Table 4

[0149]

[0150]

[0151] Refer to Tables 3 and 4. Figure 5 as well as Figure 6 The digital compensation value of the first Class A sub-pixel RSP1' is reduced (e.g., to 0.6) and the digital compensation value of the second Class A sub-pixel RSP2', which is close to the third Class A sub-pixel RSP3' in the first direction DR1, is reduced (e.g., to 0.8). This improves the problem of bright spots appearing in the first Class A sub-pixel RSP1' and the problem of bright spots appearing between the second Class A sub-pixel RSP2' and the third Class A sub-pixel RSP3', which are close to the third Class A sub-pixel RSP3' in the first direction DR1.

[0152] Figures 7A to 7DThis is a top view schematic diagram illustrating a method for manufacturing a display device 50 according to an embodiment of the present invention. It should be noted that... Figures 7A to 7D The embodiments follow Figures 1A to 1D The component reference numerals and partial contents of the embodiments are described below, wherein the same or similar reference numerals are used to represent the same or similar components, and descriptions of the same technical content are omitted. For explanations of the omitted parts, please refer to the foregoing embodiments, and will not be repeated here.

[0153] Figures 1A to 1D This document explains the repair and manufacturing process for Class A light-emitting elements. Figure 7A and Figure 7D This section explains the repair and fabrication process for Class B light-emitting elements. Please refer to [link / reference]. Figure 7A The circuit board 100 includes multiple Class A sub-pixel areas RSP, multiple Class B sub-pixel areas GSP, and multiple Class C sub-pixel areas BSP. For ease of explanation of the repair and fabrication process of the Class B sub-pixel areas GSP, three Class B sub-pixel areas GSP are respectively labeled as the first Class B sub-pixel area GSP1, the second Class B sub-pixel area GSP2, and the third Class B sub-pixel area GSP3.

[0154] Each of the Class A subpixel areas RSP has a Class A preset luminous area RL and a Class A maintenance area RR.

[0155] Each of the Class B sub-pixel areas GSP has a Class B preset light-emitting area GL and a Class B repair area GR. For example, the first Class B sub-pixel area GSP1 has a first Class B preset light-emitting area GL1 and a first Class B repair area GR1; the second Class B sub-pixel area GSP2 has a second Class B preset light-emitting area GL2 and a second Class B repair area GR2; and the third Class B sub-pixel area GSP3 has a third Class B preset light-emitting area GL3 and a third Class B repair area GR3.

[0156] Each of the Class C subpixel areas (BSP) has a Class C preset luminous area (BL) and a Class C maintenance area (BR).

[0157] Please refer to Figure 7B Multiple Class A light-emitting elements, multiple Class B light-emitting elements GLD (including first Class B light-emitting element GLD1, second Class B light-emitting element GLD2 and third Class B light-emitting element GLD3) and multiple Class C light-emitting elements BLD are transferred onto the circuit board 100 through one or more mass transfer fabrication processes, and are respectively set in the corresponding preset light-emitting areas.

[0158] Type A light-emitting elements (RLDs) are transferred to Type A preset light-emitting areas (RLs). Type B light-emitting elements (GLDs) are transferred to Type B preset light-emitting areas (GLs), wherein the first Type B light-emitting element (GLD1), the second Type B light-emitting element (GLD2), and the third Type B light-emitting element (GLD3) are transferred to the first Type B preset light-emitting area (GL1), the second Type B preset light-emitting area (GL2), and the third Type B preset light-emitting area (GL3), respectively. Type C light-emitting elements (BLDs) are transferred to Type C preset light-emitting areas (BLs).

[0159] Please refer to Figure 7C A test procedure was performed on the Class B light-emitting elements (GLDs). The test procedure revealed that the second Class B light-emitting element, GLD2, was a faulty light-emitting element, while the other Class B light-emitting elements (GLDs) (including the first Class B light-emitting element, GLD1, and the third Class B light-emitting element, GLD3) emitted light during the test procedure (e.g., they could emit light of the expected wavelength and brightness normally).

[0160] exist Figure 7C In the image, faulty light-emitting elements are marked with an "X". Although in Figures 7A to 7D In this invention, the faulty second type B light-emitting element GLD2 is placed on the second type B preset light-emitting area GL2, but this invention is not limited thereto. In fact, due to the offset of the transfer manufacturing process, there may be no light-emitting element (i.e., light-emitting diode) in the second type B preset light-emitting area GL2.

[0161] Please refer to Figure 7D The first Class B repair light-emitting element GRD1 and the second Class B repair light-emitting element GRD2 are transferred to the first Class B repair area GR1 and the second Class B repair area GR2, respectively, thereby completing the repair of the Class B light-emitting elements.

[0162] In this embodiment, the display device 50 includes a plurality of Class A subpixels RSP', a plurality of Class B subpixels GSP' (including a first Class B subpixel GSP1', a second Class B subpixel GSP2', and a third Class B subpixel GSP3'), and a plurality of Class C subpixels BSP'.

[0163] The first Class B sub-pixel GSP1' has a first Class B preset light-emitting area GL1 and a first Class B repair area GR1, and includes a first Class B light-emitting element GLD1 and a first Class B repair light-emitting element GRD1 respectively disposed in the first Class B preset light-emitting area GL1 and the first Class B repair light-emitting area GR1. The first Class B light-emitting element GLD1 and the first Class B repair light-emitting element GRD1 are arranged in parallel. Specifically, the anode of the first Class B light-emitting element GLD1 is electrically connected to the anode of the first Class B repair light-emitting element GRD1, and the cathode of the first Class B light-emitting element GLD1 is electrically connected to the cathode of the first Class B repair light-emitting element GRD1. Therefore, the first Class B light-emitting element GLD1 and the first Class B repair light-emitting element GRD1 are simultaneously lit and simultaneously turned off.

[0164] The second type B sub-pixel GSP2' has a second type B preset light-emitting area GL2 and a second type B repair area GR2, and includes a second type B repair light-emitting element GRD2 disposed in the second type B repair area GR2. The second type B preset light-emitting area GL2 either has no light-emitting diodes or has a faulty second type B light-emitting element GLD2 disposed therein.

[0165] In this embodiment, the distance between the second type B repair light-emitting element GRD2 and the first type B light-emitting element GLD1 is approximately equal to the length w of the pixel in the second direction DR2 (including the lengths of the type A and type B sub-pixels in the second direction DR2) plus the length q of the second type B preset light-emitting area GL2 or the second type B repair area GR2 in the second direction DR2. Since the second type B preset light-emitting area GL2 does not contain any normally emitting light-emitting elements, to avoid the formation of dark spots due to excessive distance between the second type B repair light-emitting element GRD2 and the first type B light-emitting element GLD1, the first type B repair light-emitting element GRD1 is still placed on the first type B repair area GR1, even though the first type B light-emitting element GLD1 can operate normally. The distance between the second type B repair light-emitting element GRD2 adjacent to the first type B sub-pixel GSP1' and the first type B repair light-emitting element GRD1 of the first type B sub-pixel GSP1' is substantially equal to the length w of the pixel in the second direction DR2.

[0166] The third type B sub-pixel GSP3' has a third type B preset light-emitting area GL3 and a third type B maintenance area GR3. The third type B sub-pixel GSP3' includes a third type B light-emitting element GLD3 disposed in the third type B preset light-emitting area GL3. No light-emitting diodes are disposed in the third type B maintenance area GR3.

[0167] The second type B sub-pixel GSP2' is located between the first type B sub-pixel GSP1' and the third type B sub-pixel GSP3' in the second direction DR2. In this embodiment, one second type B sub-pixel GSP2' is located between the first type B sub-pixel GSP1' and the third type B sub-pixel GSP3', but the invention is not limited thereto. In other embodiments, two or more second type B sub-pixels GSP2' are located between the first type B sub-pixel GSP1' and the third type B sub-pixel GSP3'.

[0168] The first B-type preset light-emitting area GL1, the first B-type repair area GR1, the second B-type preset light-emitting area GL2, the second B-type repair area GR2, the third B-type preset light-emitting area GL3, and the third B-type repair area GR3 are arranged along the second direction DR2, for example, in a row along the second direction DR2.

[0169] The first B-type light-emitting element GLD1, the first B-type repair light-emitting element GRD1, the second B-type repair light-emitting element GRD2, and the third B-type light-emitting element GLD3 are all light-emitting elements of the same color.

[0170] The first Class B light-emitting element GLD1 and the third Class B light-emitting element GLD3 have substantially the same luminous efficiency. In some embodiments, the luminous efficiency of the first Class B repair light-emitting element GLD1 and the second Class B repair light-emitting element GLD2 are the same as or different from the luminous efficiency of the first Class B light-emitting element GLD1 and the third Class B light-emitting element GLD3. For example, the luminous efficiency of the first Class B repair light-emitting element GLD1 is lower than that of the first Class B light-emitting element GLD1, resulting in a lower brightness of the light emitted by the first Class B repair light-emitting element GLD1 than that emitted by the first Class B light-emitting element GLD1. In some embodiments, the luminous efficiency of the second Class B repair light-emitting element GLD2 is also lower than that of the first Class B light-emitting element GLD1. In some embodiments, the luminous efficiency of the first Class B repair light-emitting element GLD1 is lower than or equal to that of the second Class B repair light-emitting element GLD2. In some embodiments, in addition to using repair light-emitting elements with lower luminous efficiency, the quality of the displayed image is further improved by digital compensation. By using repair light-emitting elements with lower luminous efficiency, the magnitude of digital compensation can be relatively small.

[0171] In some embodiments, using a first type B repair light-emitting element GRD1 with lower luminous efficiency in the first type B sub-pixel GSP1' can prevent bright spots from appearing in the first type A sub-pixel RSP1'. On the other hand, using a second type B repair light-emitting element GRD2 with lower luminous efficiency in the second type B sub-pixel GSP2' can prevent bright spots from appearing between the second type B sub-pixel GSP2' and the third type B sub-pixel GSP3'.

[0172] In some embodiments, the luminous efficiency of the first Class B light-emitting element GLD1 and the third Class B light-emitting element GLD3 is substantially equal to the luminous efficiency of the first Class B repair light-emitting element GRD1 and the second Class B repair light-emitting element GRD2. The maximum brightness of each of the first Class B light-emitting element GLD1, the first Class B repair light-emitting element GRD1, and the second Class B repair light-emitting element GRD2 when displaying an image on the display device 50 is reduced through digital compensation.

[0173] For example, Table 5 is... Figure 7D The digital compensation table for class B sub-pixels, Figure 7D The digital compensation values ​​for each B-class sub-pixel are shown in the corresponding positions in Table 5.

[0174] Table 5

[0175] 0.6 0.8 1 1 1 1 1 1

[0176] Refer to Table 5 and Figure 7D The digital compensation value of the first B-type sub-pixel GSP1' (e.g., 0.6) is lower than the digital compensation value of the second B-type sub-pixel GSP2' (e.g., 0.8), and the digital compensation value of the second B-type sub-pixel GSP2' is lower than the digital compensation values ​​of other B-type sub-pixels GSP' (including the third B-type sub-pixel GSP3') (e.g., 1). A larger digital compensation value results in a higher maximum brightness of the corresponding light-emitting element when displaying an image on the display device 50. Reducing the digital compensation value of the first B-type sub-pixel GSP1' can improve the problem of bright spots appearing in the first B-type sub-pixel GSP1', and reducing the digital compensation value of the second B-type sub-pixel GSP2' can improve the problem of bright spots appearing between the second B-type sub-pixel GSP2' and the third B-type sub-pixel GSP3'.

[0177] Figures 8A to 8B This is a top view schematic diagram illustrating a method for manufacturing a display device 60 according to an embodiment of the present invention. It must be noted here that... Figures 8A to 8B The embodiments follow Figures 7A to 7D The component reference numerals and partial contents of the embodiments are described below, wherein the same or similar reference numerals are used to represent the same or similar components, and descriptions of the same technical content are omitted. For explanations of the omitted parts, please refer to the foregoing embodiments, and will not be repeated here.

[0178] Figures 7A to 7D This document explains the repair and manufacturing process for Class B light-emitting elements. Figure 8A and Figure 8BThis section explains the repair and fabrication process for Class C light-emitting elements. For ease of explanation, the three Class C sub-pixel areas (BSPs) are labeled as Class 1 (BSP1), Class 2 (BSP2), and Class 3 (BSP3), and the three Class C light-emitting elements (BLDs) are labeled as Class 1 (BLD1), Class 2 (BLD2), and Class 3 (BLD3). Class 1 (BSP1) has a Class 1 preset light-emitting area (BL1) and a Class 1 repair area (BR1); Class 2 (BSP2) has a Class 2 preset light-emitting area (BL2) and a Class 2 repair area (BR2); and Class 3 (BSP3) has a Class 3 preset light-emitting area (BL3) and a Class 3 repair area (BR3).

[0179] Figure 8A Continued Figure 7B Please refer to the steps. Figure 8A A test procedure was performed on the Class C light-emitting elements (BLDs). The test procedure revealed that the second Class C light-emitting element, BLD2, was a faulty light-emitting element, while the other Class C light-emitting elements (BLDs) (including the first Class C light-emitting element, BLD1, and the third Class C light-emitting element, BLD3) emitted light during the test procedure (e.g., they could emit light of the expected wavelength and brightness normally).

[0180] exist Figure 8A In the image, faulty light-emitting elements are marked with an "X". Although in Figures 8A to 8B In this invention, the faulty second type C light-emitting element BLD2 is placed on the second type C preset light-emitting area BL2, but this invention is not limited thereto. In fact, due to the shift in the transfer manufacturing process, there may be no light-emitting element (i.e., light-emitting diode) in the second type C preset light-emitting area BL2.

[0181] Please refer to Figure 8B The first C-type repair light-emitting element BRD1 and the second C-type repair light-emitting element BRD2 are transferred to the first C-type repair area BR1 and the second C-type repair area BR2, respectively, thereby completing the repair of the C-type light-emitting elements.

[0182] In this embodiment, the display device 60 includes a plurality of Class A subpixels RSP', a plurality of Class B subpixels GSP', and a plurality of Class C subpixels BSP' (including a first Class C subpixel BSP1', a second Class C subpixel BSP2', and a third Class C subpixel BSP3').

[0183] The first C-type sub-pixel BSP1' has a first C-type preset light-emitting area BL1 and a first C-type repair area BR1, and includes a first C-type light-emitting element BLD1 and a first C-type repair light-emitting element BRD1 respectively disposed in the first C-type preset light-emitting area BL1 and the first C-type repair light-emitting area BR1. The first C-type light-emitting element BLD1 and the first C-type repair light-emitting element BRD1 are connected in parallel. Specifically, the anode of the first C-type light-emitting element BLD1 is electrically connected to the anode of the first C-type repair light-emitting element BRD1, and the cathode of the first C-type light-emitting element BLD1 is electrically connected to the cathode of the first C-type repair light-emitting element BRD1. Therefore, the first C-type light-emitting element BLD1 and the first C-type repair light-emitting element BRD1 are simultaneously lit and simultaneously turned off.

[0184] The second C-type sub-pixel BSP2' has a second C-type preset light-emitting area BL2 and a second C-type repair area BR2, and includes a second C-type repair light-emitting element BRD2 disposed in the second C-type repair area BR2. The second C-type preset light-emitting area BL2 either has no light-emitting diodes or has a faulty second C-type light-emitting element BLD2 disposed therein.

[0185] In this embodiment, to avoid the formation of dark spots due to excessive distance between the second Class C repair light-emitting element BRD2 and the first Class C light-emitting element BLD1, the first Class C repair light-emitting element BRD1 is still disposed on the first Class C repair area BR1, even though the first Class C light-emitting element BLD1 can function normally. The distance between the second Class C repair light-emitting element BRD2 adjacent to the first Class C sub-pixel BSP1' and the first Class C repair light-emitting element BRD1 of the first Class C sub-pixel BSP1' is substantially equal to the length w of the pixel in the second direction DR2.

[0186] The third C-type sub-pixel BSP3' has a third C-type preset light-emitting area BL3 and a third C-type maintenance area BR3. The third C-type sub-pixel BSP3' includes a third C-type light-emitting element BLD3 disposed in the third C-type preset light-emitting area BL3. No light-emitting diodes are disposed in the third C-type maintenance area BR3.

[0187] The second C-type sub-pixel BSP2' is located between the first C-type sub-pixel BSP1' and the third C-type sub-pixel BSP3' in the second direction DR2. In this embodiment, one second C-type sub-pixel BSP2' is located between the first C-type sub-pixel BSP1' and the third C-type sub-pixel BSP3', but the invention is not limited thereto. In other embodiments, two or more second C-type sub-pixels BSP2' are located between the first C-type sub-pixel BSP1' and the third C-type sub-pixel BSP3'.

[0188] The first C-type preset light-emitting area BL1, the first C-type repair area BR1, the second C-type preset light-emitting area BL2, the second C-type repair area BR2, the third C-type preset light-emitting area BL3, and the third C-type repair area BR3 are arranged along the second direction DR2, for example, in a row along the second direction DR2.

[0189] The first C-type light-emitting element BLD1, the first C-type repair light-emitting element BRD1, the second C-type repair light-emitting element BRD2, and the third C-type light-emitting element BLD3 are light-emitting elements of the same color.

[0190] The first Class C light-emitting element BLD1 and the third Class C light-emitting element BLD3 have substantially the same luminous efficiency. In some embodiments, the luminous efficiency of the first Class C repair light-emitting element BRD1 and the second Class C repair light-emitting element BRD2 is the same as or different from the luminous efficiency of the first Class C light-emitting element BLD1 and the third Class C light-emitting element BLD3. For example, the luminous efficiency of the first Class C repair light-emitting element BRD1 is lower than that of the first Class C light-emitting element BLD1, resulting in a lower brightness of the light emitted by the first Class C repair light-emitting element BRD1 than that emitted by the first Class C light-emitting element BLD1. In some embodiments, the luminous efficiency of the second Class C repair light-emitting element BRD2 is also lower than that of the first Class C light-emitting element BLD1. In some embodiments, the luminous efficiency of the first Class C repair light-emitting element BRD1 is lower than or equal to that of the second Class C repair light-emitting element BRD2. In some embodiments, in addition to using repair light-emitting elements with lower luminous efficiency, the quality of the displayed image is further improved by digital compensation. By using repair light-emitting elements with lower luminous efficiency, the magnitude of digital compensation can be relatively small.

[0191] In some embodiments, using a first C-type repair light-emitting element BRD1 with lower luminous efficiency in the first C-type sub-pixel BSP1' can prevent bright spots from appearing in the first C-type sub-pixel BSP1'. On the other hand, using a second C-type repair light-emitting element BRD2 with lower luminous efficiency in the second C-type sub-pixel BSP2' can prevent bright spots from appearing between the second C-type sub-pixel BSP2' and the third C-type sub-pixel BSP3'.

[0192] In some embodiments, the luminous efficiency of the first Class C light-emitting element BLD1 and the third Class C light-emitting element BLD3 is substantially equal to the luminous efficiency of the first Class C repair light-emitting element BRD1 and the second Class C repair light-emitting element BRD2. The maximum brightness of each of the first Class C light-emitting element BLD1, the first Class C repair light-emitting element BRD1, and the second Class C repair light-emitting element BRD2 when displaying an image on the display device 60 is reduced through digital compensation.

[0193] For example, Table 6 is... Figure 8B The digital compensation table for Class C subpixels, Figure 8B The digital compensation values ​​for each C-class subpixel are shown in the corresponding positions in Table 6.

[0194] Table 6

[0195] 0.6 0.8 1 1 1 1 1 1

[0196] Refer to Table 6 and Figure 8B The digital compensation value of the first C-type sub-pixel BSP1' (e.g., 0.6) is lower than the digital compensation value of the second C-type sub-pixel BSP2' (e.g., 0.8), and the digital compensation value of the second C-type sub-pixel BSP2' is lower than the digital compensation values ​​of other C-type sub-pixels BSP' (including the third C-type sub-pixel BSP3') (e.g., 1). A larger digital compensation value results in a higher maximum brightness of the corresponding light-emitting element when displaying a screen on the display device 60. Reducing the digital compensation value of the first C-type sub-pixel BSP1' can improve the problem of bright spots appearing in the first C-type sub-pixel BSP1', and reducing the digital compensation value of the second C-type sub-pixel BSP2' can improve the problem of bright spots appearing between the second C-type sub-pixel BSP2' and the third C-type sub-pixel BSP3'.

[0197] Figure 9 This is a circuit diagram of a sub-pixel SP according to an embodiment of the present invention. The sub-pixel SP includes a light-emitting element LD and a repair light-emitting element RD. The light-emitting element LD and the repair light-emitting element RD are respectively disposed in a preset light-emitting area L and a repair area R. The anodes of the light-emitting element LD and the repair light-emitting element RD are electrically connected together, for example, connected to a first voltage signal V1. The cathodes of the light-emitting element LD and the repair light-emitting element RD are electrically connected together, for example, connected to a second voltage signal V2. One of the first voltage signal V1 and the second voltage signal V2 is connected to the sub-pixel driving circuit, while the other is connected as a common voltage signal.

Claims

1. A display device, comprising: a first sub-pixel having a first preset light emitting area and a first repair area, and comprising: a first light emitting element disposed in the first preset light emitting area; and a first repair light emitting element disposed in the first repair area, wherein the first light emitting element and the first repair light emitting element are disposed in parallel; and at least one second sub-pixel having a second preset light emitting area and a second repair area, wherein the at least one second sub-pixel comprises: a second repair light emitting element disposed in the second repair area, wherein the second preset light emitting area is not disposed with any light emitting diode or disposed with a faulty second light emitting element; a third sub-pixel having a third preset light emitting area and a third repair area, wherein the at least one second sub-pixel is located between the first sub-pixel and the third sub-pixel in a first direction, and the third sub-pixel comprises: a third light emitting element disposed in the third preset light emitting area, wherein the third repair area is not disposed with any light emitting diode, wherein the first light emitting element, the first repair light emitting element, the second repair light emitting element, and the third light emitting element are light emitting elements of the same color, wherein the first preset light emitting area, the first repair area, the second preset light emitting area, the second repair area, the third preset light emitting area, and the third repair area are arranged along the first direction.

2. The display device of claim 1, wherein a spacing between the second repair light emitting element adjacent to the first sub-pixel and the first repair light emitting element of the first sub-pixel is substantially equal to a length of the first sub-pixel in the first direction.

3. The display device of claim 1, further comprising: a fourth sub-pixel, wherein the fourth sub-pixel has a fourth preset light emitting area and a fourth repair area, and comprises: a fourth light emitting element disposed in the fourth preset light emitting area, wherein the fourth light emitting element and the first light emitting element are light emitting elements of the same color, and the fourth light emitting element and the first light emitting element are arranged in a second direction perpendicular to the first direction.

4. The display device of claim 1, wherein a light emitting efficiency of the first repair light emitting element and a light emitting efficiency of the second repair light emitting element are lower than a light emitting efficiency of the first light emitting element.

5. The display device of claim 1, wherein the first sub-pixel, the at least one second sub-pixel, and the third sub-pixel are red sub-pixels, and the display device further comprises: a first green sub-pixel having a first green preset light emitting area and a first green repair area, and comprising: a first green light emitting element disposed in the first green preset light emitting area; and a first green repair light emitting element disposed in the first green repair area, wherein the first green light emitting element and the first green repair light emitting element are disposed in parallel; and at least one second green sub-pixel having a second green preset light emitting area and a second green repair area, wherein the at least one second green sub-pixel comprises: a second green repair light emitting element disposed in the second green repair area, wherein the second green preset light emitting area is not disposed with any light emitting diode or disposed with a faulty second green light emitting element; a third green sub-pixel having a third green preset light emitting region and a third green repair region, wherein the at least one second green sub-pixel is located between the first green sub-pixel and the third green sub-pixel in a second direction, and the third green sub-pixel comprises: a third green light emitting element disposed in the third green preset light emitting region, wherein no light emitting diode is disposed in the third green repair region, wherein the first green preset light emitting region, the first green repair region, the second green preset light emitting region, the second green repair region, the third green preset light emitting region, and the third green repair region are arranged along the second direction, wherein the second direction is not parallel to the first direction.

6. The display device of claim 5, further comprising: a first blue sub-pixel having a first blue preset light emitting region and a first blue repair region, and comprising: a first blue light emitting element disposed in the first blue preset light emitting region; and a first blue repair light emitting element disposed in the first blue repair region, wherein the first blue light emitting element and the first blue repair light emitting element are disposed in parallel; and at least one second blue sub-pixel having a second blue preset light emitting region and a second blue repair region, wherein the at least one second blue sub-pixel comprises: a second blue repair light emitting element disposed in the second blue repair region, wherein no light emitting diode or a faulty second blue light emitting element is disposed in the second blue preset light emitting region; a third blue sub-pixel having a third blue preset light emitting region and a third blue repair region, wherein the at least one second blue sub-pixel is located between the first blue sub-pixel and the third blue sub-pixel in a second direction, and the third blue sub-pixel comprises: a third blue light emitting element disposed in the third blue preset light emitting region, wherein no light emitting diode is disposed in the third blue repair region, wherein the first blue preset light emitting region, the first blue repair region, the second blue preset light emitting region, the second blue repair region, the third blue preset light emitting region, and the third blue repair region are arranged along the second direction.

7. The display device of claim 1, wherein the number of the at least one second sub-pixel is more than two.

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