Display panel and method of manufacturing the same

Abstract

A display panel and a manufacturing method thereof, the display panel includes a first, a second and a third display area. The first display area includes a plurality of first island areas, a plurality of first bridge areas and a plurality of first hollow areas. The first island areas are separated from each other, the first bridge areas are connected to two adjacent first island areas respectively, and each first hollow area is surrounded by four adjacent first island areas and four adjacent first bridge areas. The second display area includes a plurality of second island areas, a plurality of second bridge areas and a plurality of second hollow areas. The second island areas are separated from each other, the second bridge areas are connected to two adjacent second island areas respectively, and each second hollow area is surrounded by four adjacent second island areas and four adjacent second bridge areas. The size of each second hollow area is different from the size of each first hollow area. The second display area is located between the first display area and the third display area.

Description

Technical Field

[0001] This invention provides a display panel and a method for manufacturing the display panel, and particularly relates to a flexible display panel and a method for manufacturing the flexible display panel. Background Technology

[0002] Currently, flexible display panels are evolving from two-dimensional to three-dimensional deformable forms. To increase the deformability of flexible display panels, a series of openings are typically created on the flexible substrate, dividing it into island areas where pixels are located and bridge areas where connecting lines are located, thus giving the display panel stretchable and deformable properties. Pixels are located in the island areas, and signal lines are laid out in the bridge areas. When external force is applied, deformation mainly occurs in the bridge areas, while the pixels in the island areas retain their shape. For flexible display panels, the display screen includes a non-stretchable display area and a stretchable display area. The pixel design of the stretchable display area is formed by removing a portion of pixels from the non-stretchable display area. For example, the pixel arrangement of the stretchable display area is obtained by removing the pixels at the corresponding opening positions in the non-stretchable display area. In other words, when the stretchable display area has not been stretched, its pixel distribution is uniform and consistent with that of the non-stretchable display area, resulting in uniform display brightness. However, during stretching, the uniformity of pixel distribution is broken, the pixel density of the stretchable display area decreases, and the brightness and resolution of the stretchable display area decrease. This results in a difference in the overall brightness and resolution of the stretchable display area compared to the non-stretchable display area. Summary of the Invention

[0003] This invention provides a display panel comprising a first display area, a second display area, and a third display area. The first display area includes a plurality of first island areas, a plurality of first bridge areas, and a plurality of first cutout areas. The first island areas are separated from each other, the first bridge areas connect two adjacent first island areas, and each first cutout area is surrounded by four adjacent first island areas and four adjacent first bridge areas. The second display area includes a plurality of second island areas, a plurality of second bridge areas, and a plurality of second cutout areas. The second island areas are separated from each other, the second bridge areas connect two adjacent second island areas, and each second cutout area is surrounded by four adjacent second island areas and four adjacent second bridge areas. The size of each second cutout area differs from the size of each first cutout area. The second display area is located between the first display area and the third display area. Each first island area includes a plurality of first sub-pixels, and a first sub-pixel spacing is between two adjacent first sub-pixels. Each second island area includes a plurality of second sub-pixels, and a second sub-pixel spacing is between two adjacent second sub-pixels. The third display area includes a plurality of third sub-pixels, and there is a third sub-pixel spacing between two adjacent third sub-pixels. The third sub-pixel spacing is less than the first sub-pixel spacing, and the second sub-pixel spacing is the same as the first sub-pixel spacing.

[0004] According to one or more embodiments of the present invention, each first cutout area has a first long axis, and the second display area includes a first sub-display area, a second sub-display area, and a third sub-display area. The first sub-display area is adjacent to the first display area. The first sub-display area includes a 2-1 cutout area, which has a second long axis that is 2 / 3 times the length of the first long axis. The second sub-display area includes a 2-2 cutout area, which has a third long axis that is 1 / 3 times the length of the first long axis. The third sub-display area is adjacent to the third display area. The third sub-display area includes a 2-3 cutout area, which has a fourth long axis that is 1 / 6 times the length of the first long axis. The second sub-display area is located between the first and third sub-display areas.

[0005] According to one or more embodiments of the present invention, the area of ​​the third display area is greater than 1 / 6 times and less than 8 / 9 times the area of ​​the display panel.

[0006] According to one or more embodiments of the present invention, a first display area has a first forming strain rate, a second display area has a second forming strain rate, and a third display area has a third forming strain rate. The first forming strain rate is greater than the second forming strain rate, and the second forming strain rate is greater than the third forming strain rate.

[0007] Another aspect of the present invention provides a method for manufacturing a display panel, comprising the following operations: pressing together a stacked flexible substrate and simulating the stress distribution required for the forming operation; dividing the stacked flexible substrate into a first display area, a second display area, and a third display area according to the stress distribution, wherein the second display area is located between the first display area and the third display area, and wherein the first display area, the second display area, and the third display area each have different forming strain rates; performing a process sequence on the stacked flexible substrate to form a display panel structure; and performing a forming operation to obtain the display panel. The manufacturing process includes: forming a plurality of first island areas, a plurality of first bridge areas, and a plurality of first cutout areas in a first display area, wherein the first island areas are separated from each other, the first bridge areas connect two adjacent first island areas respectively, and each first cutout area is surrounded by four adjacent first island areas and four adjacent first bridge areas; and forming a plurality of second island areas, a plurality of second bridge areas, and a plurality of second cutout areas in a second display area, wherein the second island areas are separated from each other, the second bridge areas connect two adjacent second island areas respectively, and each second cutout area is surrounded by four adjacent second island areas and four adjacent second bridge areas, wherein the size of each second cutout area is different from the size of each first cutout area. Each first island area includes a plurality of first sub-pixels, and there is a first sub-pixel spacing between two adjacent first sub-pixels. Each second island area includes a plurality of second sub-pixels, and there is a second sub-pixel spacing between two adjacent second sub-pixels. The third display area includes a plurality of third sub-pixels, and there is a third sub-pixel spacing between two adjacent third sub-pixels. The spacing between the third subpixels is less than the spacing between the first subpixels, and the spacing between the second subpixels is the same as the spacing between the first subpixels.

[0008] According to one or more embodiments of the present invention, forming a plurality of second cutout areas in a second display area includes: dividing the second display area into a first sub-display area, a second sub-display area, and a third sub-display area, wherein the first sub-display area is adjacent to the first display area, the third sub-display area is adjacent to the third display area, and the second sub-display area is located between the first sub-display area and the third sub-display area; forming a first mask on a portion of the first sub-display area; forming a second mask on a portion of the second sub-display area; forming a third mask on a portion of the third sub-display area, wherein the thickness of the third mask is greater than the thickness of the second mask, and the thickness of the second mask is greater than the thickness of the first mask; and performing an etching process to form the second cutout areas.

[0009] According to one or more embodiments of the present invention, the width of the second mask is the same as the width of the first mask, and the width of the third mask is 2 / 3 times the width of the second mask.

[0010] To provide a better understanding of the above and other aspects of the present invention, specific embodiments are described below in conjunction with the accompanying drawings, but these are not intended to limit the scope of protection of the present invention. Attached Figure Description

[0011] The various aspects of the invention will be fully understood from the following detailed description when reading the accompanying drawings. It should be noted that, according to standard industry practice, the various features are not drawn to scale. In fact, for clarity of discussion, the dimensions of the various features may be arbitrarily increased or decreased.

[0012] Figure 1 This is a flowchart of a method for manufacturing a display panel according to an embodiment of the present invention.

[0013] Figure 2 This is a cross-sectional view of a display panel according to an embodiment of the present invention at a certain stage of the manufacturing process.

[0014] Figure 3 This is a top view of a display panel according to an embodiment of the present invention.

[0015] Figure 4 This is a top view of a portion of a display panel according to an embodiment of the present invention.

[0016] Figure 5 This is a top view of the second display area of ​​a display panel according to an embodiment of the present invention.

[0017] Figure 6 For the second display area of ​​the display panel according to an embodiment of the present invention, at a certain stage of the manufacturing process... Figure 5 Cross-sectional view along the centerline 6-6'.

[0018] Figure 7 For a first display area of ​​a display panel according to an embodiment of the present invention, at a certain stage of the manufacturing process... Figure 4 Cross-sectional view along the centerline 7-7'.

[0019] In the attached figures, the following labels are used:

[0020] 10: Method

[0021] 102: Operation

[0022] 104: Operation

[0023] 106: Operation

[0024] 108: Operation

[0025] 20: Laminated flexible substrate

[0026] 210: Supporting membrane

[0027] 230: Display substrate

[0028] 30: Display panel

[0029] 400: First display area

[0030] 410: First Island District

[0031] 412: First subpixel

[0032] 412D: First subpixel spacing

[0033] 430: First Bridge Area

[0034] 450: First hollowed-out area

[0035] 500: Second display area

[0036] 500A: First Sub-display Area

[0037] 500B: Second Sub-display Area

[0038] 500C: Third Sub-display Area

[0039] 500W: Width

[0040] 510: Second Island District

[0041] 512: Second subpixel

[0042] 512D: Second subpixel pitch

[0043] 530: Second Bridge Area

[0044] 550: Second hollow area

[0045] 550A: Section 2-1

[0046] 550B: Section 2-2

[0047] 550C: 2nd-3rd cutout area

[0048] 600: Third display area

[0049] 612: Third subpixel

[0050] 612D: Third subpixel pitch

[0051] 6-6' : line

[0052] 7-7' : line

[0053] h1: Long axis

[0054] h2: Long axis

[0055] h3: Long axis

[0056] h4: Long axis

[0057] M0: Standard mask

[0058] M1: First mask

[0059] M2: Second mask

[0060] M3: Third Mask

[0061] T0: Thickness

[0062] T1: Thickness

[0063] T2: Thickness

[0064] T3: Thickness

[0065] W1: Width

[0066] W2: Width

[0067] W3: Width

[0068] WA : width

[0069] WB: Width

[0070] WC: Width Detailed Implementation

[0071] The spirit of the present invention will be clearly explained below with reference to the accompanying drawings and detailed description. Anyone skilled in the art can make changes and modifications based on the techniques taught in this invention after understanding the preferred embodiments of the invention, without departing from the spirit and scope of the invention.

[0072] In the accompanying drawings, the thicknesses of layers, films, panels, regions, etc., are enlarged for clarity. Throughout the specification, the same reference numerals denote the same elements. It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected" to another element, it may be directly on or connected to the other element, or intermediate elements may also be present. Conversely, when an element is referred to as being "directly on" or "directly connected" to another element, no intermediate elements are present. As used herein, "connection" can refer to a physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" may refer to the presence of other elements between two elements.

[0073] Furthermore, relative terms such as “down” or “bottom” and “up” or “top” may be used herein to describe the relationship between one element and another, as illustrated in the figures. It should be understood that relative terms are intended to include different orientations of the device beyond those shown in the figures. For example, if a device in one figure is flipped, an element described as being “down” to other elements will be oriented “up” to other elements. Thus, the exemplary term “down” can include both “down” and “up” orientations, depending on the specific orientation of the figure. Similarly, if a device in one figure is flipped, an element described as being “below” or “under” other elements will be oriented “above” other elements. Thus, the exemplary term “below” or “under” can include both “up” and “down” orientations.

[0074] According to one aspect of the present invention, a display panel (such as...) is provided. Figure 3 and Figure 4 Method 10 for manufacturing the display panel 30 shown. Figure 1 This is a flowchart of a method 10 for manufacturing a display panel according to an embodiment of the present invention. Method 10 includes operations 102, 104, 106, and 108.

[0075] This document provides various operations of the embodiments. The order in which some or all of the operations are described should not be construed as implying that these operations necessarily depend on the order. Alternative orderings will be understood with the aid of this description. Furthermore, it should be understood that not all operations must exist in every embodiment provided herein. Moreover, it should be understood that not all operations are necessary in some embodiments.

[0076] Figure 2 This is a cross-sectional view of a display panel according to an embodiment of the present invention at a certain stage of the manufacturing process. In operation 102, flexible substrates are laminated and the stress distribution required for the forming operation is simulated, such as... Figure 2As shown. In some embodiments, the stacked flexible substrate 20 may include a carrier film 210 and a display substrate 230. For example, the carrier film 210 is a stretchable flexible plastic substrate, which may be made of a polymer material, such as polyimide (PI), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonates (PC), polyether sulfone (PES), or polyarylate, or combinations thereof. For example, the display substrate 230 is a stretchable flexible display substrate. In other embodiments, the stacked flexible substrate 20 may include the carrier film 210, the display substrate 230, and a cover glass (not shown) stacked sequentially. For example, the cover glass may be made of glass or acrylic material. More specifically, during the pressing process, finite element simulation software, such as ANSYS, ABAQUS, and MSC. Nastran, can be used to simulate the stress distribution required for subsequent forming operations.

[0077] Figure 3 This is a top view of a display panel 30 according to an embodiment of the present invention. In operation 104, the laminated flexible substrate is divided into a first display area 400, a second display area 500, and a third display area 600 according to the stress distribution, wherein the first display area 400, the second display area 500, and the third display area 600 each have different forming strain rates, such as... Figure 3 As shown. Generally, the areas with the highest forming strain rates are mostly concentrated at the edges of the substrate, while the areas with the lowest forming strain rates are mostly concentrated in the center of the substrate. For example, the area with a forming strain rate greater than 4% can be divided into the first display area 400, the area with a forming strain rate less than 1% can be divided into the third display area 600, and the area with a forming strain rate between 1% and 4% can be divided into the second display area 500 (also known as the transition area).

[0078] In other embodiments, the laminated flexible substrate can also be divided into a first display area, a second display area, a third display area, a fourth display area, and a fifth display area based on stress distribution. For example, the area with a forming strain rate greater than 7% can be designated as the first display area, the area with a forming strain rate between 3% and 4% as the third display area, the area with a forming strain rate less than 1% as the fifth display area, the area with a forming strain rate between 4% and 7% as the second display area (which may be referred to as the first transition area), and the area with a forming strain rate between 1% and 2% as the fourth display area (which may be referred to as the second transition area). However, the present invention is not limited thereto, and multiple display areas can be divided according to product requirements and different forming stress distributions to give these display areas different pixel densities (Pixels Per Inch, PPI).

[0079] Figure 4 This is a top view of a portion of a display panel according to an embodiment of the present invention. In operation 106, a process sequence is performed on the laminated flexible substrate 20 to form a display panel structure, such as... Figure 4 As shown. In some embodiments, the process sequence includes forming a plurality of first island areas 410, a plurality of first bridge areas 430, and a plurality of first cutout areas 450 in a first display area 400, and forming a plurality of second island areas 510, a plurality of second bridge areas 530, and a plurality of second cutout areas 550 in a second display area 500. Specifically, the plurality of first island areas 410 are separated from each other, the plurality of first bridge areas 430 respectively connect two adjacent first island areas 410, and each first cutout area 450 is surrounded by four adjacent first island areas 410 and four adjacent first bridge areas 430. The plurality of second island areas 510 are separated from each other, the plurality of second bridge areas 530 respectively connect two adjacent second island areas 510, and each second cutout area 550 is surrounded by four adjacent second island areas 510 and four adjacent second bridge areas 530. It is worth noting that the size of each second cutout area 550 is different from the size of each first cutout area 450. For example, the size of each second cutout area 550 is larger than the size of each first cutout area 450.

[0080] Figure 5 This is a top view of the second display area 500 of the display panel 30 according to an embodiment of the present invention. Figure 6 For the second display area 500 of the display panel 30 according to an embodiment of the present invention, at a certain stage of manufacturing, along Figure 5 Cross-sectional view at centerline 6-6'. More detailed, such as... Figure 5As shown, in some embodiments, forming a plurality of second cutout areas 550 in the second display area 500 includes first dividing the second display area 500 into a first sub-display area 500A, a second sub-display area 500B, and a third sub-display area 500C. The first sub-display area 500A is adjacent to the first display area 400, the third sub-display area 500C is adjacent to the third display area 600, and the second sub-display area 500B is located between the first sub-display area 500A and the third sub-display area 500C. Figure 5 and Figure 6 As shown, a first mask M1 is then formed on a portion of the first sub-display area 500A, a second mask M2 is formed on a portion of the second sub-display area 500B, and a third mask M3 is formed on a portion of the third sub-display area 500C. It is noteworthy that the thickness T3 of the third mask M3 is greater than the thickness T2 of the second mask M2, and the thickness T2 of the second mask M2 is greater than the thickness T1 of the first mask M1. For example, the thickness T1 of the first mask M1 can be between 1 Å and 500 Å, the thickness T2 of the second mask M2 can be between 500 Å and 1000 Å, and the thickness T3 of the third mask M3 can be between 1000 Å and 1500 Å.

[0081] In some embodiments, the width W3 of the third mask M3 is greater than the width W2 of the second mask M2, and the width W2 of the second mask M2 is substantially the same as the width W1 of the first mask M1. For example, the width W3 of the third mask M3 can be 2 / 3 times the width W2 of the second mask M2.

[0082] Please continue reading. Figure 5 and Figure 6 In the first sub-display area 500A, the second sub-display area 500B and the third sub-display area 500C, at the positions where multiple second bridge areas 530 are expected to be formed, a standard mask M0 will be formed, and the thickness T0 of the standard mask M0 will be greater than the thickness T3 of the third mask M3.

[0083] Then, an etching process is performed to simultaneously form these second cutout areas 550. Understandably, the dimensions of each second cutout area 550 are not entirely identical. For example, the size of the second cutout area 550 of the first sub-display area 500A is larger than the size of the second cutout area 550 of the second sub-display area 500B, and the size of the second cutout area 550 of the second sub-display area 500B is larger than the size of the second cutout area 550 of the third sub-display area 500C.

[0084] Figure 7 For the first display area 400 of the display panel 30 according to an embodiment of the present invention, at a certain stage of the manufacturing process... Figure 4A cross-sectional view along the center line 7-7'. In some embodiments, no mask is required at the plurality of locations in the first display area 400 where the first cutout areas 450 are expected to be formed, and a standard mask M0 is formed at the plurality of locations in the first display area 400 where the first bridge areas 430 are expected to be formed, such as... Figure 7 As shown.

[0085] In addition, the process sequence also includes light-emitting element transfer and packaging processes. For example, the light-emitting element is a micro-light-emitting diode, the size of which is on the micrometer scale, for example, in the range of less than 100 micrometers and greater than 0 micrometers, but the present invention is not limited thereto. These micro-light-emitting diodes can be first formed on a growth substrate (not shown), and then transferred together to the multilayer flexible substrate 20 using mass transfer technology.

[0086] In operation 108, a forming operation is performed to obtain the display panel, such as... Figure 3 and Figure 4 The display panel 30. The specific features and details of the display panel 30 will be described in more detail below.

[0087] According to another aspect of the present invention, a display panel 30 is provided. Please also refer to... Figure 3 and Figure 4 The display panel 30 includes a first display area 400, a second display area 500, and a third display area 600, with the second display area 500 located between the first display area 400 and the third display area 600. As described above, the division of these display areas is based on simulating the stress distribution required for subsequent forming operations during the pressing operation stage. In some embodiments, the first display area 400 has a first forming strain rate, the second display area 500 has a second forming strain rate, and the third display area 600 has a third forming strain rate, wherein the first forming strain rate is greater than the second forming strain rate, and the second forming strain rate is greater than the third forming strain rate. It is understood that because the first display area 400 has a larger forming strain rate, the pixel density in the first display area 400 will be lower. Similarly, because the third display area 600 has a smaller forming strain rate, the pixel density in the third display area 600 will be higher. The second display area 500 is a transition region between the first display area 400 and the third display area 600, and the pixel density of the second display area 500 is defined to be the same as the pixel density of the first display area.

[0088] In some embodiments, the size of each first island area 410 in the first display area 400 is the same as the size of each second island area 510 in the second display area 500. In some embodiments, the size of each first bridge area 430 in the first display area 400 is the same as the size of each second bridge area 530 in the second display area 500. It is understood that the difference between the first display area 400 and the second display area 500 is that the size of the second cutout area 550 is different from the size of the first cutout area 450.

[0089] In some embodiments, the area of ​​the third display area 600 is greater than 1 / 6 times the area of ​​the display panel 30 and less than 8 / 9 times the area of ​​the display panel 30.

[0090] In some embodiments, because the forming stress on the third display area 600 is relatively small, the third display area 600 does not have any island areas, bridge areas, or cutout areas. It should be noted that, except for the third display area 600 which lacks island areas, bridge areas, and cutout areas, all features (e.g., size and shape) of the island areas in the other display areas (e.g., the first display area 400 and the second display area 500) must be identical. Additionally, except for the third display area 600, the shape and size of the bridge areas in each display area may differ, but the shape and size of the bridge areas within the same display area must be identical. For example, the bridge areas 430 of the first display area 400 may all be arc-shaped, while the second bridge areas 530 of the second display area 500 may all be serpentine. Therefore, it is understandable that all features of the transition area (such as the second display area 500) (e.g., island size, island shape, and subpixel spacing on the island) are the same as those of the adjacent display area (such as the first display area 400) with a lower pixel density. The only substantial difference is that the size of the cutout area of ​​the transition area is different from that of the adjacent display area (such as the first display area 400) with a lower pixel density.

[0091] Please continue reading. Figure 3 and Figure 4Specifically, the first display area 400 includes a plurality of first island areas 410, a plurality of first bridge areas 430, and a plurality of first cutout areas 450. These first island areas 410 are separated from each other, the first bridge areas 430 connect two adjacent first island areas 410 respectively, and each first cutout area 450 is surrounded by four adjacent first island areas 410 and four adjacent first bridge areas 430. Similarly, the second display area 500 includes a plurality of second island areas 510, a plurality of second bridge areas 530, and a plurality of second cutout areas 550. These second island areas 510 are separated from each other, the second bridge areas 530 connect two adjacent second island areas 510 respectively, and each second cutout area 550 is surrounded by four adjacent second island areas 510 and four adjacent second bridge areas 530. It is worth noting that the size of each second cutout area 550 is different from the size of each first cutout area 450. In some embodiments, the size of each second cutout area 550 is smaller than the size of each first cutout area 450.

[0092] Please see Figure 4 and Figure 5 The second display area 500 includes a first sub-display area 500A, a second sub-display area 500B, and a third sub-display area 500C. The first sub-display area 500A is adjacent to the first display area 400, the third sub-display area 500C is adjacent to the third display area 600, and the second sub-display area 500B is located between the first sub-display area 500A and the third sub-display area 500C. More specifically, the first sub-display area 500A includes a second-first cutout area 550A, and the second-first cutout area 550A has a major axis h2. The second sub-display area 500B includes a second-second cutout area 550B, and the second-second cutout area 550B has a major axis h3. The third sub-display area 500C includes a second-third cutout area 550C, and the second-third cutout area 550C has a major axis h4. Returning to... Figure 4 Each of the first cutout areas 450 in the first display area 400 has a major axis h1. In some embodiments, the major axis h1 of the first cutout area 450 is greater than the major axis h2 of the second-1 cutout area 550A, the major axis h2 of the second-1 cutout area 550A is greater than the major axis h3 of the second-2 cutout area 550B, and the major axis h3 of the second-2 cutout area 550B is greater than the major axis h4 of the second-3 cutout area 550C. For example, the major axis h2 of the second-1 cutout area 550A is 2 / 3 times the major axis h1 of the first cutout area 450. The major axis h3 of the second-2 cutout area 550B is 1 / 3 times the major axis h1 of the first cutout area 450. The major axis h4 of the second-3 cutout area 550C is 1 / 6 times the major axis h1 of the first cutout area 450.

[0093] Please return Figure 4In some embodiments, each first island region 410 includes a plurality of first sub-pixels 412, and a first sub-pixel spacing 412D is provided between two adjacent first sub-pixels 412. Each second island region 510 includes a plurality of second sub-pixels 512, and a second sub-pixel spacing 512D is provided between two adjacent second sub-pixels 512. The third display region 600 includes a plurality of third sub-pixels 612, and a third sub-pixel spacing 612D is provided between two adjacent third sub-pixels 612. It should be noted that the third sub-pixel spacing 612D is smaller than the first sub-pixel spacing 412D, and the second sub-pixel spacing 512D is the same as the first sub-pixel spacing 412D.

[0094] Please continue reading. Figure 4 In some embodiments, the second display area 500 has a width of 500W, and this width 500W is 3 to 6 times the first subpixel pitch 412D.

[0095] In some embodiments, each of the first sub-pixel 412, each of the second sub-pixel 512, and each of the third sub-pixel 612 may independently be an Organic Light Emitting Diode (OLED) or a Light Emitting Diode (LED), such as a micro LED (μLED) or a sub-millimeter LED. It is understood that at least three sub-pixels can constitute one pixel, for example, it may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel, so that each pixel can emit multiple different colors of light, such as red light, green light, blue light, or combinations thereof. Figure 4 In this embodiment, one pixel contains six sub-pixels, such as two red sub-pixels, two green sub-pixels, and two blue sub-pixels. One red sub-pixel, one green sub-pixel, and one blue sub-pixel serve as the primary light-emitting sub-pixel, while the other three red, green, and blue sub-pixels serve as backup sub-pixels. In other words, during the illumination test, the primary light-emitting sub-pixel can be detected and its light emission determined. If it fails, the backup sub-pixel is activated to replace it.

[0096] Please see Figure 5 In some embodiments, the width WA of the first sub-display area 500A is the same as the first sub-pixel pitch 412D, the width WB of the second sub-display area 500B is twice the first sub-pixel pitch 412D, and the width WC of the third sub-display area 500C is twice the first sub-pixel pitch 412D.

[0097] In summary, the display panel of the present invention first simulates the stress distribution of subsequent molding operations during the manufacturing process, and then divides the substrate into different pixel densities based on this stress distribution. Furthermore, a transition zone is added between the high-pixel-density and low-pixel-density areas, thereby further improving the elastic deformation capability and resolution of the display panel. In addition, when the display panel undergoes stretching deformation, the pixel distribution in the transition zone and low-pixel-density areas is uniform and consistent with the pixel distribution in the high-pixel-density areas, resulting in relatively uniform overall display brightness and resolution.

[0098] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of protection of the appended claims.

Claims

1. A display panel, characterized in that, include: A first display area includes a plurality of first island areas, a plurality of first bridge areas, and a plurality of first hollow areas. The first island areas are separated from each other, the first bridge areas connect two adjacent first island areas respectively, and each first hollow area is surrounded by four adjacent first island areas and four adjacent first bridge areas. A second display area includes a plurality of second island areas, a plurality of second bridge areas, and a plurality of second cutout areas. The second island areas are separated from each other, the second bridge areas connect two adjacent second island areas, and each second cutout area is surrounded by four adjacent second island areas and four adjacent second bridge areas. The size of each second cutout area differs from the size of each first cutout area. A third display area, wherein the second display area is located between the first display area and the third display area; wherein, Each first island region includes a plurality of first sub-pixels, and there is a first sub-pixel spacing between two adjacent first sub-pixels. Each second island region includes a plurality of second sub-pixels, and there is a second sub-pixel spacing between two adjacent second sub-pixels. The third display region includes a plurality of third sub-pixels, and there is a third sub-pixel spacing between two adjacent third sub-pixels. The third sub-pixel spacing is smaller than the first sub-pixel spacing, and the second sub-pixel spacing is the same as the first sub-pixel spacing.

2. The display panel as described in claim 1, characterized in that, Each of the first hollowed-out areas has a first long axis, and the second display area includes: A first sub-display area, adjacent to the first display area, the first sub-display area includes a second-1 cutout area, the second-1 cutout area has a second major axis, and the second major axis is 2 / 3 times the first major axis; A second sub-display area includes a second-second cutout area, the second-second cutout area having a third major axis, and the third major axis being 1 / 3 times the first major axis; and A third sub-display area is adjacent to the third display area. The third sub-display area includes a second-third cutout area. The second-third cutout area has a fourth major axis, and the fourth major axis is 1 / 6 times the length of the first major axis. The second sub-display area is located between the first sub-display area and the third sub-display area.

3. The display panel as described in claim 1, characterized in that, The area of ​​the third display area is greater than 1 / 6 times the area of ​​the display panel and less than 8 / 9 times the area of ​​the display panel.

4. The display panel as described in claim 1, characterized in that, The first display area has a first forming strain rate, the second display area has a second forming strain rate, and the third display area has a third forming strain rate. The first forming strain rate is greater than the second forming strain rate, and the second forming strain rate is greater than the third forming strain rate.

5. A method for manufacturing a display panel, characterized in that, include: A laminated flexible substrate is pressed together, and a stress distribution required for a forming operation is simulated. Based on the stress distribution, the laminated flexible substrate is divided into a first display area, a second display area and a third display area, and the second display area is located between the first display area and the third display area, wherein the first display area, the second display area and the third display area each have a different forming strain rate; A process sequence is performed on the laminated flexible substrate to form a display panel structure; as well as The forming operation is performed to obtain the display panel; wherein the process sequence includes: The first display area comprises a plurality of first island areas, a plurality of first bridge areas, and a plurality of first hollow areas. The first island areas are separated from each other, the first bridge areas connect two adjacent first island areas, and each first hollow area is surrounded by four adjacent first island areas and four adjacent first bridge areas; and The second display area comprises a plurality of second island areas, a plurality of second bridge areas, and a plurality of second cutout areas. The second island areas are separated from each other, the second bridge areas connect two adjacent second island areas, and each second cutout area is surrounded by four adjacent second island areas and four adjacent second bridge areas. The size of each second cutout area differs from the size of each first cutout area. Each first island region includes a plurality of first sub-pixels, and there is a first sub-pixel spacing between two adjacent first sub-pixels. Each second island region includes a plurality of second sub-pixels, and there is a second sub-pixel spacing between two adjacent second sub-pixels. The third display region includes a plurality of third sub-pixels, and there is a third sub-pixel spacing between two adjacent third sub-pixels. The third sub-pixel spacing is smaller than the first sub-pixel spacing, and the second sub-pixel spacing is the same as the first sub-pixel spacing.

6. The method for manufacturing a display panel as described in claim 5, characterized in that, The second cutout areas formed in the second display area include: The second display area is divided into a first sub-display area, a second sub-display area and a third sub-display area, wherein the first sub-display area is adjacent to the first display area, the third sub-display area is adjacent to the third display area, and the second sub-display area is located between the first sub-display area and the third sub-display area; A first mask is formed on a portion of the first sub-display area; A second mask is formed on a portion of the second sub-display area; A third mask is formed on a portion of the third sub-display area, wherein the thickness of the third mask is greater than the thickness of the second mask, and the thickness of the second mask is greater than the thickness of the first mask; and An etching process is performed to form these second cutout areas.

7. The method for manufacturing a display panel as described in claim 6, characterized in that, The width of the second mask is the same as the width of the first mask, and the width of the third mask is 2 / 3 times the width of the second mask.

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