Display device and method for repairing display device

Abstract

The invention discloses a display device which comprises a first sub-pixel, a second sub-pixel and a third sub-pixel. The first sub-pixel, the second sub-pixel and the third sub-pixel are respectively provided with a preset light-emitting area and a maintenance area. The first sub-pixel comprises a first light-emitting element and a first repair light-emitting element which are arranged 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 comprises a third light-emitting element arranged 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 have the same light-emitting color.

Description

Technical Field

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

[0002] Mass Transfer technology aims to transfer a large number of micro light-emitting diodes (μLEDs) from a growth substrate or an intermediate substrate to a specific position of a display panel, which is essential for producing high-resolution displays. Micro-LEDs have the advantages of high brightness, low power consumption and high contrast, and do not require a backlight, making them a potential candidate for the next generation of display technology.

[0003] However, whether it is the defects of the micro-LED itself or the errors in the mass transfer manufacturing process, the pixels in the display panel will not function properly, affecting the display quality of the display panel. Therefore, in order to solve the above problems, how to repair damaged or offset micro-LEDs has become the key to the development of micro-LED display technology. Summary of the invention

[0004] The 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 arranged in the first preset light-emitting area and the first maintenance area. The first light-emitting element is arranged in parallel with the first repair light-emitting element. The second sub-pixel has a second preset light-emitting area and a second maintenance area, and includes a second repair light-emitting element arranged in the second maintenance area. No light-emitting diode is arranged in the second preset light-emitting area, or a second light-emitting element with a fault is arranged. 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 the first direction. The third sub-pixel includes a third light-emitting element arranged in the third preset light-emitting area. No light-emitting diode is arranged 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 the first direction.

[0006] At least one embodiment of the present invention provides a method for repairing a display device, comprising providing a circuit substrate, the circuit substrate comprising a first, a second and a third sub-pixel area. The first sub-pixel area has a first preset light-emitting area and a first maintenance area. The second sub-pixel area has a second preset light-emitting area and a second maintenance area. The third sub-pixel area has a third preset light-emitting area and a third maintenance area. The first light-emitting element, the second light-emitting element and the third light-emitting element are transferred to the first preset light-emitting area, the second preset light-emitting area and the third preset light-emitting area, respectively. 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 in the test procedure. The first repair light-emitting element and the second repair light-emitting element are transferred to the first maintenance area and the second maintenance area, respectively. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

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

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

[0014] Explanation of symbols

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

[0016] BL: Class C preset luminous area

[0017] BL1: The first type C preset light-emitting area

[0018] BL2: The second type C preset light-emitting area

[0019] BL3: The third type C preset luminous area

[0020] BLD: Class C light emitting element

[0021] BLD1: The first type C light emitting element

[0022] BLD2: The second type C light emitting element

[0023] BLD3: Class III C light emitting element

[0024] BM: Black Matrix

[0025] BR: Category C maintenance area

[0026] BR1: First Category C maintenance area

[0027] BR2: Second Category C Maintenance Area

[0028] BR3: Category 3 repair area

[0029] BRD1: The first type C repair light emitting element

[0030] BRD2: Class II C repair light emitting element

[0031] BSP: Class C sub-pixel area

[0032] BSP1: The first type C sub-pixel area

[0033] BSP2: The second type C sub-pixel area

[0034] BSP3: The third type C sub-pixel area

[0035] BSP': Class C sub-pixel

[0036] DR1: First Direction

[0037] DR2: Second direction

[0038] GL: Class B preset luminous area

[0039] GL1: The first type B preset luminous area

[0040] GL2: The second type B preset luminous area

[0041] GL3: The third type B preset luminous area

[0042] GLD: Class B light emitting element

[0043] GLD1: The first type B light emitting element

[0044] GLD2: Class II B light emitting element

[0045] GLD3: Class III B light emitting element

[0046] GR: Category B maintenance area

[0047] GR1: First Category B pit area

[0048] GR2: Second Category B Maintenance Area

[0049] GR3: Category 3B maintenance area

[0050] GRD1: First Class B repair light emitting element

[0051] GRD2: Class II B repair luminous element

[0052] GSP: Class B sub-pixel area

[0053] GSP1: The first type B sub-pixel area

[0054] GSP2: The second type B sub-pixel area

[0055] GSP3: The third type B sub-pixel area

[0056] GSP': Class B sub-pixel

[0057] GSP1': first type B sub-pixel

[0058] GSP2': Second type B sub-pixel

[0059] GSP3': The third type B sub-pixel

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

[0061] L: Preset light area

[0062] LD: Light Emitting Element

[0063] R: Maintenance area

[0064] RD: Repair the light emitting element

[0065] RL: Class A preset luminous area

[0066] RL1: Class A preset luminous area

[0067] RL2: The second type A preset light area

[0068] RL3: Class III A preset luminous area

[0069] RL4: Class 4A preset luminous area

[0070] RL5: Fifth Class A preset luminous area

[0071] RL6: Class 6A preset luminous area

[0072] RLD: Class A light emitting device

[0073] RLD1: Class A light emitting element

[0074] RLD2: Class II A light emitting element

[0075] RLD3: Class III A light emitting element

[0076] RLD4: Class IV A light emitting element

[0077] RLD5: Fifth Class A Light Emitting Element

[0078] RLD6: Class 6A light emitting element

[0079] RR: Category A repair area

[0080] RR1: First Category A pit area

[0081] RR2: Second Category A pit area

[0082] RR3: Third Category A Maintenance Area

[0083] RR4: Category 4A maintenance area

[0084] RR5: Fifth Category A pit area

[0085] RR6: Category 6A maintenance area

[0086] RRD1: First Class A repair light emitting element

[0087] RRD2: Class II A repair light emitting device

[0088] RSP: Class A sub-pixel area

[0089] RSP1: The first type A sub-pixel area

[0090] RSP2: The second type A sub-pixel area

[0091] RSP3: The third type A sub-pixel area

[0092] RSP4: The fourth type A sub-pixel area

[0093] RSP5: The fifth type A sub-pixel area

[0094] RSP6: The sixth type A sub-pixel area

[0095] RSP': Class A sub-pixel

[0096] RSP1': first type A sub-pixel

[0097] RSP2': Second type A sub-pixel

[0098] RSP3': The third type A sub-pixel

[0099] RSP4': The fourth type A sub-pixel

[0100] RSP5': Fifth type A sub-pixel

[0101] RSP6': Sixth type A sub-pixel

[0102] SP: Sub-Pixel

[0103] V1: first voltage signal

[0104] V2: Second voltage signal DETAILED DESCRIPTION

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

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

[0107] Each of the A-type sub-pixel regions has a preset A-type light-emitting region and a maintenance region of type A. For example, the first A-type sub-pixel region RSP1 has a first A-type preset light-emitting region RL1 and a first A-type maintenance region RR1; the second A-type sub-pixel region RSP2 has a second A-type preset light-emitting region RL2 and a second A-type maintenance region RR2; the third A-type sub-pixel region RSP3 has a third A-type preset light-emitting region RL3 and a third A-type maintenance region RR3; the fourth A-type sub-pixel region RSP4 has a fourth A-type preset light-emitting region RL4 and a fourth A-type maintenance region RR4; the fifth A-type sub-pixel region RSP5 has a fifth A-type preset light-emitting region RL5 and a fifth A-type maintenance region RR5; and the sixth A-type sub-pixel region RSP6 has a sixth A-type preset light-emitting region RL6 and a sixth A-type maintenance region RR6.

[0108] Each of the B-type sub-pixel regions GSP has a B-type preset light emitting region GL and a B-type repair region GR. Each of the C-type sub-pixel regions BSP has a C-type preset light emitting region BL and a C-type repair region 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 (Thin film transistor, T) and one or more capacitors (Capacitor, C). For example, the sub-pixel driving circuit can 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 the light-emitting element on the sub-pixel region is driven to emit light through the driving circuit.

[0110] Please refer to Figure 1B , multiple Class A light emitting elements ( Figure 1B It shows that the first A-type light emitting element RLD1, the second A-type light emitting element RLD2, the third A-type light emitting element RLD3, the fourth A-type light emitting element RLD4, the fifth A-type light emitting element RLD5 and the sixth A-type light emitting element RLD6), a plurality of B-type light emitting elements GLD and a plurality of C-type light emitting elements BLD are transferred to the circuit substrate 100 through one or more mass transfer processes, and are respectively arranged in corresponding preset light emitting areas. Figure 1A and Figure 1B In the figure, the area where no light emitting element is placed is drawn with a dotted outline, and the area where the light emitting element is placed is drawn with a solid line outline.

[0111] The A-type light emitting element, the B-type light emitting element GLD, and the C-type light emitting element BLD are light emitting diodes of different colors, respectively. In some embodiments, the A-type light emitting element, the B-type light emitting element GLD, and the C-type light emitting element 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, the A-type light emitting element is a green light emitting diode or a blue light emitting diode, the B-type light emitting element GLD is a red light emitting diode or a blue light emitting diode, and the C-type light emitting element BLD is a red light emitting diode or a green light emitting diode.

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

[0113] These light-emitting elements are bonded to the circuit substrate 100 using solder, conductive glue or other materials, so that the sub-pixel driving circuit in the circuit substrate 100 can drive these light-emitting elements. However, some light-emitting elements may fail due to their own defects or displacement during the transfer process. The repair process of Class A light-emitting elements will be described below.

[0114] Please refer to Figure 1C , the test procedure is performed on the first A-type light emitting element RLD1, the second A-type light emitting element RLD2, the third A-type light emitting element RLD3, the fourth A-type light emitting element RLD4, the fifth A-type light emitting element RLD5 and the sixth A-type light emitting element RLD6. Through the test procedure, it is known that the second A-type light emitting element RLD2 is a faulty light emitting element, while the first A-type light emitting element RLD1, the third A-type light emitting element RLD3, the fourth A-type light emitting element RLD4, the fifth A-type light emitting element RLD5 and the sixth A-type light emitting element RLD6 emit light in the test procedure (for example, they can normally emit light of the expected wavelength and expected brightness).

[0115] exist Figure 1C In the diagram, the faulty light emitting element is marked with a cross. Figure 1C to Figure 1DIn the embodiment, the faulty second type A light emitting element RLD2 is placed on the second type A preset light emitting area RL2, but the present invention is not limited thereto. In fact, there may be no light emitting element (ie, light emitting diode) in the second type A preset light emitting area RL2 due to the deviation of the transfer manufacturing process.

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

[0117] In this embodiment, the display device 10 includes a plurality of type A sub-pixels ( Figure 1D A first A subpixel RSP1', a second A subpixel RSP2', a third A subpixel RSP3', a fourth A subpixel RSP4', a fifth A subpixel RSP5' and a sixth A subpixel RSP6'), a plurality of B subpixels GSP' and a plurality of C subpixels BSP' are shown.

[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 arranged in the first class A preset light-emitting area RL1 and the first class A repair area RR1. The first class A light-emitting element RLD1 is arranged in parallel with the first class A repair light-emitting element RRD1. 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 lit and turned off at the same time.

[0119] The second class A subpixel RSP2' has a second class A preset light emitting area RL2 and a second class A repair area RR2, and includes a second class A repair light emitting element RRD2 disposed in the second class A repair area RR2. No light emitting diode is disposed in the second class A preset light emitting area RL2, or a faulty second class A light emitting element RLD2 is disposed.

[0120] In the present embodiment, the spacing between the second A-type repair light-emitting element RRD2 and the first A-type 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 A-type preset light-emitting area RL2 or the second A-type repair area RR2 in the first direction DR1. Since the second A-type preset light-emitting area RL2 does not include a light-emitting element that can emit light normally, in order to avoid the formation of a dark spot due to the distance between the second A-type repair light-emitting element RRD2 and the first A-type light-emitting element RLD1, although the first A-type light-emitting element RLD1 can operate normally, the first A-type repair light-emitting element RRD1 is still arranged on the first A-type repair area RR1. The spacing between the second A-type repair light-emitting element RRD2 adjacent to the first A-type sub-pixel RSP1' and the first A-type repair light-emitting element RRD1 of the first A-type sub-pixel RSP1' is substantially equal to the length h of the first A-type 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 repair 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 repair 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 repair 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 repair 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 diode is disposed in the third to sixth type A maintenance areas RR3 ˜ 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 present invention is not limited thereto. In other embodiments, more than two 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 A-class preset light-emitting area RL1, the first A-class maintenance area RR1, the second A-class preset light-emitting area RL2, the second A-class maintenance area RR2, the third A-class preset light-emitting area RL3, and the third A-class maintenance area RR3 are sequentially arranged along the first direction DR1, for example, in a row along the first direction DR1. The fourth A-class preset light-emitting area RL4, the fourth A-class maintenance area RR4, the fifth A-class preset light-emitting area RL5, the fifth A-class maintenance area RR5, the sixth A-class preset light-emitting area RL6, and the sixth A-class maintenance area RR6 are sequentially arranged along the first direction DR1, for example, in another row along the first direction DR1.

[0124] In some embodiments, the fourth A-type light emitting element RLD4, the fifth A-type light emitting element RLD5, and the sixth A-type light emitting element RLD6 are respectively arranged in a staggered manner with the first A-type light emitting element RLD1, the second A-type light emitting element RLD2, and the third A-type light emitting element RLD3 in the second direction DR2, thereby avoiding the problem of uneven brightness of the display screen. 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 class A light-emitting element RLD1, the first class A repaired light-emitting element RRD1, the second class A repaired light-emitting element RRD2, 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 are light-emitting elements of the same color.

[0126] 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 have substantially the same luminous efficiency. The luminous efficiency of the first class A repair light emitting element RRD1 and the luminous efficiency of the second class A repair light emitting element RRD2 are the same as or different from 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. For example, the luminous efficiency of the first class A repair light emitting element RRD1 is lower than that of the first class A light emitting element RLD1, so that the brightness of the light emitted by the first class A repair light emitting element RRD1 is lower than that of the light emitted by the first class A light emitting element RLD1. In some embodiments, the luminous efficiency of the second class A repair light emitting element RRD2 is also lower than that of the first class A light emitting element RLD1. In some embodiments, the luminous efficiency of the first class A repair light emitting element RRD1 is lower than or equal to the luminous efficiency of the second class A repair light emitting element RRD2. In some embodiments, in addition to using a repaired light-emitting element with a lower luminous efficiency, the quality of the display image is further improved by digital compensation. By using a repaired light-emitting element with a lower luminous efficiency, the amplitude 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 that can emit light (i.e., the first Class A light-emitting element RLD1 and the first Class A repair light-emitting element RRD1), in order to avoid the first Class A sub-pixel RSP1' from having a bright spot, the first Class A repair light-emitting element RRD1 with a lower light-emitting 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 relatively small (approximately equal to the length h of the sub-pixel in the first direction DR1 minus the length p), in order to avoid the second Class A sub-pixel RSP2' from having a bright spot and the third Class A sub-pixel RSP3', the second Class A repair light-emitting element RRD2 with a lower light-emitting 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 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 the display device 10 displays the picture is reduced by digital compensation. For example, the data driving circuit provides a data voltage to each sub-pixel through a data line. The compensation circuit is coupled to the data driving circuit, and the compensation circuit is used to further provide a digital compensation value according to the level of the data voltage to be output by the data driving circuit. For example, the compensation circuit is used to calculate the digital compensation value of the data voltage provided to different sub-pixels according to the requirements of the grayscale value conversion 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 is calculated by the compensation circuit according to the digital compensation table. For example, Table 1 is Figure 1D A-type sub-pixel digital compensation table, Figure 1D The digital compensation values ​​of each type A sub-pixel 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 Class A sub-pixel RSP1' (for example, 0.6) is lower than the digital compensation value of the second Class A sub-pixel RSP2' (for example, 0.8), and the digital compensation value of the second Class A sub-pixel RSP2' is lower than the digital compensation values ​​of the third Class A sub-pixel RSP3', the fourth Class A sub-pixel RSP4', the fifth Class A sub-pixel RSP5', and the sixth Class A sub-pixel RSP6' (for example, 1). The larger the digital compensation value, the greater the maximum brightness of the corresponding light-emitting element when the display device 10 displays the picture. By reducing the digital compensation value of the first Class A sub-pixel RSP1', the problem of bright spots appearing in the first Class A sub-pixel RSP1' can be improved, and by reducing the digital compensation value of the second Class A sub-pixel RSP2', the problem of bright spots appearing between the second Class A sub-pixel RSP2' and the third Class A sub-pixel RSP3' can be improved.

[0133] Figure 2 FIG. 2 is a top view of a display device 20 according to an embodiment of the present invention. It must be noted that: Figure 2The implementation examples are used Figures 1A to 1D The component numbers and partial contents of the embodiments are the same, wherein the same or similar numbers are used to represent the same or similar components, and the description of the same technical contents is omitted. The description of the omitted parts can be referred to the aforementioned embodiments, and will not be repeated here.

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

[0135] Figure 3 is a schematic top view of a display device 30 according to an embodiment of the present invention. It must be noted here that Figure 2 The implementation examples are used Figures 1A to 1D The component numbers and partial contents of the embodiments are the same, wherein the same or similar numbers are used to represent the same or similar components, and the description of the same technical contents is omitted. The description of the omitted parts can be referred to the aforementioned embodiments, and will not be repeated here.

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

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

[0138] Figure 4 , Figure 5 as well as Figure 6 4 is a partial top view of different regions of a display device 40 according to an embodiment of the present invention. In order to facilitate the description of the repair method of the type A sub-pixel, Figure 4 , Figure 5 as well as Figure 6 Only the type A sub-pixels in the display device are shown, and the type B sub-pixels and the type C sub-pixels 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 type A light emitting element RLD1 and the third type A light emitting element RLD3 is substantially equal to the luminous efficiency of the first type A repair light emitting element RRD1 and the second type A repair light emitting element RRD2. The maximum brightness of the first type A light emitting element RLD1, the first type A repair light emitting element RRD1, and the second type A repair light emitting element RRD2 closest to the third type A sub-pixel RSP3' in the first direction DR1 when the display device 40 displays an image is reduced by digital compensation.

[0141] For example, Table 2 is Figure 4 A-type sub-pixel digital compensation table, Figure 4 The digital compensation values ​​of each type A sub-pixel 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' (for example, 0.6) is lower than the digital compensation value of the second Class A sub-pixel RSP2' closest to the third Class A sub-pixel RSP3' in the first direction DR1 (for example, 0.8), and the digital compensation value of the second Class A sub-pixel RSP2' 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 other second Class A sub-pixels RSP2' (for example, 1). The problem of bright spots appearing in the first Class A sub-pixel RSP1' can be improved by reducing the digital compensation value of the first Class A sub-pixel RSP1', and the problem of bright spots appearing between the second Class A sub-pixel RSP2' closest to the third Class A sub-pixel RSP3' in the first direction DR1 and the third Class A sub-pixel RSP3' can be improved by reducing the digital compensation value of the second Class A sub-pixel RSP2' closest to the third Class A sub-pixel RSP3' in the first direction DR1.

[0145] Table 3 and Table 4 are Figure 5 as well as Figure 6 A-type sub-pixel digital compensation table, Figure 5 The digital compensation values ​​of each type A sub-pixel are shown in the corresponding positions in Table 3. Figure 6 The digital compensation values ​​of each type A sub-pixel 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 Table 3, Table 4, Figure 5 as well as Figure 6 , reduce the digital compensation value (e.g. 0.6) of the first type A sub-pixel RSP1' and the digital compensation value (e.g. 0.8) of the second type A sub-pixel RSP2' close to the third type A sub-pixel RSP3' in the first direction DR1. In this way, the problem of bright spots appearing in the first type A sub-pixel RSP1' and the problem of bright spots appearing between the second type A sub-pixel RSP2' close to the third type A sub-pixel RSP3' in the first direction DR1 can be improved.

[0152] 7A to 7DFIG. 5 is a schematic top view of a method for manufacturing a display device 50 according to an embodiment of the present invention. It must be noted that: 7A to 7D The implementation examples are used Figures 1A to 1D The component numbers and partial contents of the embodiments are the same, wherein the same or similar numbers are used to represent the same or similar components, and the description of the same technical contents is omitted. The description of the omitted parts can be referred to the aforementioned embodiments, and will not be repeated here.

[0153] Figures 1A to 1D This article explains the repair and production process of Class A light-emitting components. Fig. 7A and Fig.7D This article explains the repair process of Class B light-emitting components. Fig. 7A The circuit substrate 100 includes a plurality of type A sub-pixel regions RSP, a plurality of type B sub-pixel regions GSP, and a plurality of type C sub-pixel regions BSP. In order to conveniently explain the repair process of the type B sub-pixel region GSP, the three type B sub-pixel regions GSP are respectively marked as a first type B sub-pixel region GSP1, a second type B sub-pixel region GSP2, and a third type B sub-pixel region GSP3.

[0154] Each of the type A sub-pixel regions RSP has an type A preset light emitting region RL and an type A repair region RR.

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

[0156] Each of the C-type sub-pixel regions BSP has a C-type preset light emitting region BL and a C-type repair region BR.

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

[0158] The A-type light-emitting elements RLD are respectively transferred to the A-type preset light-emitting areas RL. The B-type light-emitting elements GLD are respectively transferred to the B-type preset light-emitting areas GL, wherein the first B-type light-emitting element GLD1, the second B-type light-emitting element GLD2 and the third B-type light-emitting element GLD3 are respectively transferred to the first B-type preset light-emitting area GL1, the second B-type preset light-emitting area GL2 and the third B-type preset light-emitting area GL3. The C-type light-emitting elements BLD are respectively transferred to the C-type preset light-emitting areas BL.

[0159] Please refer to Figure 7C , a test procedure is performed on the class B light emitting element GLD. Through the test procedure, it is known that the second class B light emitting element GLD2 is a faulty light emitting element, while other class B light emitting elements GLD (including the first class B light emitting element GLD1 and the third class B light emitting element GLD3) emit light in the test procedure (for example, they can normally emit light of the expected wavelength and expected brightness).

[0160] exist Figure 7C In the diagram, the faulty light emitting element is marked with a cross. 7A to 7D In the embodiment, the faulty second type B light emitting element GLD2 is placed on the second type B preset light emitting area GL2, but the present invention is not limited thereto. In fact, there may be no light emitting element (ie, light emitting diode) in the second type B preset light emitting area GL2 due to the deviation of the transfer manufacturing process.

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

[0162] In this embodiment, the display device 50 includes a plurality of type A sub-pixels RSP', a plurality of type B sub-pixels GSP' (including a first type B sub-pixel GSP1', a second type B sub-pixel GSP2' and a third type B sub-pixel GSP3') and a plurality of type C sub-pixels 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 arranged in the first class B preset light-emitting area GL1 and the first class B repair area GR1. The first class B light-emitting element GLD1 is arranged in parallel with the first class B repair light-emitting element GRD1. 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 lit and turned off at the same time.

[0164] The second type B subpixel 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. No light emitting diode is disposed in the second type B preset light emitting area GL2, or a faulty second type B light emitting element GLD2 is disposed.

[0165] In the present embodiment, the spacing between the second B-type repair light-emitting element GRD2 and the first B-type light-emitting element GLD1 is approximately equal to the length w of the pixel in the second direction DR2 (including the length of the A-type sub-pixel and the B-type sub-pixel in the second direction DR2) plus the length q of the second B-type preset light-emitting area GL2 or the second B-type repair area GR2 in the second direction DR2. Since the second B-type preset light-emitting area GL2 does not include a light-emitting element that can emit light normally, in order to avoid the formation of a dark spot due to the distance between the second B-type repair light-emitting element GRD2 and the first B-type light-emitting element GLD1 being too far away, although the first B-type light-emitting element GLD1 can operate normally, the first B-type repair light-emitting element GRD1 is still arranged on the first B-type repair area GR1. The spacing between the second B-type repair light-emitting element GRD2 adjacent to the first B-type sub-pixel GSP1' and the first B-type repair light-emitting element GRD1 of the first B-type 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 diode is disposed in the third type B maintenance area GR3.

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

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

[0169] The first type B light-emitting element GLD1 , the first type B repair light-emitting element GRD1 , the second type B repair light-emitting element GRD2 , and the third type B light-emitting element GLD3 are 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 GRD1 and the luminous efficiency of the second class B repair light emitting element GRD2 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 GRD1 is lower than that of the first class B light emitting element GLD1, so that the brightness of the light emitted by the first class B repair light emitting element GRD1 is lower than the brightness of the light 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 GRD2 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 GRD1 is lower than or equal to the luminous efficiency of the second class B repair light emitting element GRD2. In some embodiments, in addition to using a repair light emitting element with lower luminous efficiency, the quality of the display screen is further improved by digital compensation. By using a repair light emitting element with lower luminous efficiency, the amplitude of digital compensation can be relatively small.

[0171] In some embodiments, a first B-type repair light-emitting element GRD1 with lower light-emitting efficiency is disposed in the first B-type sub-pixel GSP1', which can avoid the appearance of a bright spot in the first A-type sub-pixel RSP1'. On the other hand, a second B-type repair light-emitting element GRD2 with lower light-emitting efficiency is disposed in the second B-type sub-pixel GSP2', which can avoid the appearance of a bright spot between the second B-type sub-pixel GSP2' and the third B-type sub-pixel GSP3'.

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

[0173] For example, Table 5 is Fig.7D Digital compensation table for Class B sub-pixels, Fig.7D The digital compensation values ​​of each type B 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 Fig.7D , the digital compensation value of the first B-type sub-pixel GSP1' (for example, 0.6) is lower than the digital compensation value of the second B-type sub-pixel GSP2' (for example, 0.8), and the digital compensation value of the second B-type sub-pixel GSP2' is lower than the digital compensation value of other B-type sub-pixels GSP' (including the third B-type sub-pixel GSP3') (for example, 1). The larger the digital compensation value, the greater the maximum brightness of the corresponding light-emitting element when the display device 50 displays the picture. By reducing the digital compensation value of the first B-type sub-pixel GSP1', the problem of bright spots appearing in the first B-type sub-pixel GSP1' can be improved, and by reducing the digital compensation value of the second B-type sub-pixel GSP2', the problem of bright spots appearing between the second B-type sub-pixel GSP2' and the third B-type sub-pixel GSP3' can be improved.

[0177] FIG. 8A to FIG. 8B FIG. 6 is a schematic top view of a method for manufacturing a display device 60 according to an embodiment of the present invention. It must be noted that: FIG. 8A to FIG. 8B The implementation examples are used 7A to 7D The component numbers and partial contents of the embodiments are the same, wherein the same or similar numbers are used to represent the same or similar components, and the description of the same technical contents is omitted. The description of the omitted parts can be referred to the aforementioned embodiments, and will not be repeated here.

[0178] 7A to 7D This article explains the repair and production process of Class B light-emitting elements. Fig. 8A and Figure 8BThe repair process of the C-type light-emitting element is described. In order to facilitate the description of the repair process of the C-type sub-pixel area BSP, the three C-type sub-pixel areas BSP are respectively marked as the first C-type sub-pixel area BSP1, the second C-type sub-pixel area BSP2 and the third C-type sub-pixel area BSP3, and the three C-type light-emitting elements BLD are respectively marked as the first C-type light-emitting element BLD1, the second C-type light-emitting element BLD2 and the third C-type light-emitting element BLD3. The first C-type sub-pixel area BSP1 has a first C-type preset light-emitting area BL1 and a first C-type repair area BR1, the second C-type sub-pixel area BSP2 has a second C-type preset light-emitting area BL2 and a second C-type repair area BR2, and the third C-type sub-pixel area BSP3 has a third C-type preset light-emitting area BL3 and a third C-type repair area BR3.

[0179] Fig. 8A Continue Figure 7B For steps, please refer to Fig. 8A , a test procedure is performed on the C-type light emitting element BLD. Through the test procedure, it is known that the second C-type light emitting element BLD2 is a faulty light emitting element, while other C-type light emitting elements BLD (including the first C-type light emitting element BLD1 and the third C-type light emitting element BLD3) emit light in the test procedure (for example, they can normally emit light of the expected wavelength and expected brightness).

[0180] exist Fig. 8A In the diagram, the faulty light emitting element is marked with a cross. FIG. 8A to FIG. 8B In the embodiment, the faulty second type C light emitting element BLD2 is placed in the second type C preset light emitting area BL2, but the present invention is not limited thereto. In fact, the second type C preset light emitting area BL2 may not have any light emitting element (ie, light emitting diode) due to the deviation of the transfer manufacturing process.

[0181] Please refer to Figure 8B , the first C-type repaired light emitting element BRD1 and the second C-type repaired 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 type A sub-pixels RSP', a plurality of type B sub-pixels GSP', and a plurality of type C sub-pixels BSP' (including a first type C sub-pixel BSP1', a second type C sub-pixel BSP2', and a third type C sub-pixel BSP3').

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

[0184] The second C-type subpixel 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. No light-emitting diode is disposed in the second C-type preset light-emitting area BL2, or a faulty second C-type light-emitting element BLD2 is disposed.

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

[0186] The third C-type subpixel BSP3' has a third C-type preset light emitting area BL3 and a third C-type maintenance area BR3. The third C-type subpixel BSP3' includes a third C-type light emitting element BLD3 disposed in the third C-type preset light emitting area BL3. No light emitting diode is 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 present invention is not limited thereto. In other embodiments, more than two 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 maintenance area BR1, the second C-type preset light-emitting area BL2, the second C-type maintenance area BR2, the third C-type preset light-emitting area BL3 and the third C-type maintenance 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 luminous efficiency of the second class C repair light emitting element BRD2 are 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, so that the brightness of the light emitted by the first class C repair light emitting element BRD1 is lower than the brightness of the light 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 the luminous efficiency of the second class C repair light emitting element BRD2. In some embodiments, in addition to using a repair light emitting element with lower luminous efficiency, the quality of the display image is further improved by digital compensation. By using a repair light emitting element with lower luminous efficiency, the amplitude of digital compensation can be relatively small.

[0191] In some embodiments, a first C-type repair light-emitting element BRD1 with lower light-emitting efficiency is disposed in the first C-type sub-pixel BSP1', so that a bright spot can be avoided in the first C-type sub-pixel BSP1'. On the other hand, a second C-type repair light-emitting element BRD2 with lower light-emitting efficiency is disposed in the second C-type sub-pixel BSP2', so that a bright spot can be avoided 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 C-type light emitting element BLD1 and the third C-type light emitting element BLD3 is substantially equal to the luminous efficiency of the first C-type repair light emitting element BRD1 and the second C-type repair light emitting element BRD2. The maximum brightness of the first C-type light emitting element BLD1, the first C-type repair light emitting element BRD1 and the second C-type repair light emitting element BRD2 when the display device 60 displays the image is reduced by digital compensation.

[0193] For example, Table 6 is Figure 8B Digital compensation table for Class C sub-pixels, Figure 8B The digital compensation values ​​of each type C sub-pixel 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' (for example, 0.6) is lower than the digital compensation value of the second C-type sub-pixel BSP2' (for example, 0.8), and the digital compensation value of the second C-type sub-pixel BSP2' is lower than the digital compensation value of other C-type sub-pixels BSP' (including the third C-type sub-pixel BSP3') (for example, 1). The larger the digital compensation value, the greater the maximum brightness of the corresponding light-emitting element when the display device 60 displays the picture. By reducing the digital compensation value of the first C-type sub-pixel BSP1', the problem of bright spots appearing in the first C-type sub-pixel BSP1' can be improved, and by reducing the digital compensation value of the second C-type sub-pixel BSP2', the problem of bright spots appearing between the second C-type sub-pixel BSP2' and the third C-type sub-pixel BSP3' can be improved.

[0197] Fig. 9 1 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 arranged in a preset light-emitting area L and a repair area R. The anode of the light-emitting element LD and the anode of the repair light-emitting element RD are electrically connected together, for example, connected to a first voltage signal V1. The cathode of the light-emitting element LD and the cathode of 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, and the other is connected as a common voltage signal.

Claims

1. A display device, comprising: The first sub-pixel has a first preset light emitting area and a first maintenance area, and includes: A first light emitting element is disposed in the first preset light emitting area; and A first repair light emitting element is disposed in the first maintenance area, wherein the first light emitting element is disposed in parallel with the first repair light emitting element; and At least one second sub-pixel has a second preset light emitting area and a second maintenance area, wherein the at least one second sub-pixel includes: A second repair light emitting element is arranged in the second maintenance area, wherein the second preset light emitting area is not provided with any light emitting diode or is provided with a faulty second light emitting element; The third sub-pixel has a third preset light-emitting area and a third maintenance area, wherein the at least one second sub-pixel is located between the first sub-pixel and the third sub-pixel in the first direction, and the third sub-pixel includes: A third light-emitting element is arranged in the third preset light-emitting area, wherein no light-emitting diode is arranged in the third maintenance area, 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 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 the first direction.

2. The display device as claimed in 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 according to claim 1, further comprising: A fourth sub-pixel, wherein the fourth sub-pixel has a fourth preset light emitting area and a fourth maintenance area, and comprises: A fourth light-emitting element is 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 staggered in a second direction perpendicular to the first direction. 4 . The display device as claimed in claim 1 , wherein the luminous efficiency of the first repair light-emitting element and the luminous efficiency of the second repair light-emitting element are lower than the luminous efficiency of the first light-emitting element.

5. The display device as claimed in 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: The first green sub-pixel has a first green preset light emitting area and a first green maintenance area, and includes: A first green light emitting element is disposed in the first green preset light emitting area; and A first green repair light emitting element is disposed in the first green repair area, wherein the first green light emitting element is disposed in parallel with the first green repair light emitting element; and At least one second green sub-pixel has a second green preset light emitting area and a second green maintenance area, wherein the at least one second green sub-pixel comprises: A second green repair light emitting element is arranged in the second green repair area, wherein the second green preset light emitting area is not provided with any light emitting diode or is provided with a faulty second green light emitting element; The third green sub-pixel has a third green preset light-emitting area and a third green maintenance area, wherein the at least one second green sub-pixel is located between the first green sub-pixel and the third green sub-pixel in the second direction, and the third green sub-pixel includes: A third green light-emitting element is arranged in the third green preset light-emitting area, wherein no light-emitting diode is arranged in the third green maintenance area, wherein the first green preset light-emitting area, the first green maintenance area, the second green preset light-emitting area, the second green maintenance area, the third green preset light-emitting area and the third green maintenance area are arranged along the second direction, wherein the second direction is not parallel to the first direction.

6. The display device according to claim 5, further comprising: The first blue sub-pixel has a first blue preset light emitting area and a first blue maintenance area, and includes: A first blue light emitting element is disposed in the first blue preset light emitting area; and A first blue repair light emitting element is disposed in the first blue repair area, wherein the first blue light emitting element is disposed in parallel with the first blue repair light emitting element; and At least one second blue sub-pixel has a second blue preset light emitting area and a second blue maintenance area, wherein the at least one second blue sub-pixel comprises: A second blue repair light emitting element is arranged in the second blue repair area, wherein the second blue preset light emitting area is not provided with any light emitting diode or is provided with a faulty second blue light emitting element; The third blue sub-pixel has a third blue preset light emitting area and a third blue maintenance area, wherein the at least one second blue sub-pixel is located between the first blue sub-pixel and the third blue sub-pixel in the second direction, and the third blue sub-pixel includes: A third blue light-emitting element is arranged in the third blue preset light-emitting area, wherein no light-emitting diode is arranged in the third blue maintenance area, wherein the first blue preset light-emitting area, the first blue maintenance area, the second blue preset light-emitting area, the second blue maintenance area, the third blue preset light-emitting area and the third blue maintenance area are arranged along the second direction. The display device as claimed in claim 1 , wherein the number of the at least one second sub-pixel is more than two.

8. A method for repairing a display device, comprising: A circuit substrate is provided, the circuit substrate comprising: A first sub-pixel region having a first preset light emitting region and a first maintenance region; A second sub-pixel region having a second preset light emitting region and a second maintenance region; and A third sub-pixel region having a third preset light emitting region and a third maintenance region; Transferring the first light-emitting element, the second light-emitting element and the third light-emitting element to the first preset light-emitting area, the second preset light-emitting area and the third preset light-emitting area respectively; Performing a test procedure on the first light emitting element, the second light emitting element, and the third light emitting element, wherein the second light emitting element is faulty, and the first light emitting element and the third light emitting element emit light during the test procedure; and The first repair light emitting element and the second repair light emitting element are transferred to the first repair area and the second repair area respectively.

9. The repair method according to claim 8, further comprising: The maximum brightness of each of the first light-emitting element, the first repair light-emitting element and the second repair light-emitting element when the display device displays a picture is reduced by digital compensation. 10 . The repair method as claimed in claim 8 , wherein the luminous efficiency of the first repaired light-emitting element and the luminous efficiency of the second repaired light-emitting element are lower than the luminous efficiency of the first light-emitting element.

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