Light emitting diode display device

Abstract

The present application provides a light emitting diode display device, comprising a substrate, a plurality of stretch signal line regions, and a plurality of light transmission opening regions. The substrate has a plurality of pixel element package regions arranged in an array on one side thereof, the stretch signal line regions connect two pixel element package regions, and the stretch signal line regions surround the light transmission opening regions. The stretch signal line regions are of a multi-layer transmission structure, which can reduce the risk of signal transmission line breakage during stretching. The light transmission opening regions are stacked with organic materials, and the inorganic material layer is removed, serving as the main stretching area during product stretching, reducing the problem of inorganic material film layer breakage and extension during product stretching, and simultaneously reducing the penetration loss caused by light passing through multiple layers of refraction, so that the light transmission opening regions have high light transmission efficiency.

Description

Technical Field

[0001] The present invention relates to a light emitting diode display device, and more particularly to a stretch-resistant light emitting diode display device with a stretchable deflection sensing device. Background Art

[0002] Light-emitting diodes (LEDs, particularly Micro LEDs), are considered the next generation of display technology, the dominant technology of the next generation. Numerous manufacturers both domestically and internationally are investing in the R&D and production of these products, and their market prospects are highly anticipated. High brightness, low power consumption, ultra-high resolution, and excellent color saturation are all advantages of LEDs. Their greatest advantage stems from their micron-level pitch, which allows for addressable control and single-point drive of each pixel in the display.

[0003] Furthermore, LEDs use inorganic materials, which have the advantages of long service life and simple structure for flexible display applications. However, in actual manufacturing processes or applications, stress may cause cracking at the component interface. During the conformal manufacturing process, since the stress on the LED is not unidirectional, the LED may crack due to the inability to withstand stress during the manufacturing process. Figure 14 FIG. 1 is a schematic diagram showing a prior art light-emitting diode (LED) deviating from a neutral plane on a substrate. When a conformable display (or flexible display) is actually used in a flexible manner, since LEDs 8 are disposed in a stacked structure on a substrate 82 of the flexible display, LEDs 8 are easily deviated from the neutral plane (NP) of substrate 82, thereby causing damage to the LEDs.

[0004] As mentioned above, how to reduce the stress on LEDs in all directions in conformable displays (or flexible displays) to prevent cracking and reduce the chance of component damage during bending is an urgent problem that needs to be solved. Summary of the Invention

[0005] The present invention aims to provide a light emitting diode display device, which connects thin film transistors and light emitting diodes with multi-layer stretchable metal signal transmission lines to reduce stress and thus reduce device damage.

[0006] The present invention aims to provide a light-emitting diode display device that achieves the effect of forming a highly transparent and stretchable block in the opening area by stacking organic materials in a stacked structure design and removing inorganic materials to reduce the penetration loss of light caused by multi-layer refraction.

[0007] The present invention aims to provide a light emitting diode display device, which can significantly reduce the problem of display element disconnection by stacking organic materials in the opening area and removing display or telecommunication transmission components, thereby improving the product's stretchability.

[0008] The present invention aims to provide a light-emitting diode display device, wherein the structural equivalent modulus of the pixel element packaging area is the largest, the structural equivalent modulus of the stretched signal line area is the second largest, and the structural equivalent modulus of the light-transmitting opening area is the smallest, so that the light-transmitting opening area is the main stretched area during the stretching process.

[0009] To achieve the above objectives, the present invention provides a light-emitting diode display device comprising: a substrate, a plurality of first stretched signal line regions, a plurality of second stretched signal line regions, a plurality of first light-transmitting opening regions, and a plurality of second light-transmitting opening regions. A side surface of the substrate includes a plurality of pixel element packaging regions arranged in an array, each pixel element packaging region including at least one light-emitting unit, and the pixel element packaging region being rectangular in shape. The plurality of first stretched signal line regions are arranged in an array, each having a first curved shape and connecting two short sides of the pixel element packaging regions. The plurality of second stretched signal line regions are arranged in an array, each having a second curved shape and connecting two long sides of the pixel element packaging regions. The plurality of first light-transmitting opening regions are arranged in an array, each having an aperture ratio, and surrounded by the first stretched signal line regions. The plurality of second light-transmitting opening regions are arranged in an array, each having the aperture ratio, and surrounded by the second stretched signal line regions.

[0010] In one embodiment of the present invention, the first light-transmitting opening region and the second light-transmitting opening region are formed by stacking the substrate with organic materials and removing inorganic materials. The substrate is stacked with a supporting substrate and a flexible substrate.

[0011] In one embodiment of the present invention, the flexible substrate further has a plurality of openings.

[0012] In one embodiment of the present invention, the flexible substrate further comprises a packaging layer.

[0013] In one embodiment of the present invention, the packaging layer and the flexible substrate further have a plurality of through holes.

[0014] In one embodiment of the present invention, the pixel element packaging area has a first equivalent modulus, the first stretched signal line area and the second stretched signal line area have the same second equivalent modulus, the first light-transmitting opening area and the second light-transmitting opening area have the same third equivalent modulus, the first equivalent modulus is greater than the second equivalent modulus, and the second equivalent modulus is greater than the third equivalent modulus.

[0015] In one embodiment of the present invention, the first stretched signal line region and the second stretched signal line region are made of at least one metal material and are connected in series vias.

[0016] In one embodiment of the present invention, the first curved shape and the second curved shape are elliptical shapes.

[0017] In one embodiment of the present invention, the substrate defines a first direction extending along the long side of the pixel device packaging area, and defines a second direction extending along the short side of the pixel device packaging area; the center positions of the pixel device packaging areas are separated by a first distance along the first direction, and the center positions of the pixel device packaging areas are separated by a second distance along the second direction, and a curvature design base value r is defined as (X1*X2*Y% / π) 0.5 , where X1 is the first distance, X2 is the second distance, Y% is the aperture ratio, and π is pi. The first stretched signal line region has two first curved lines and two second curved lines, the second curved lines being adjacent to the short side of the pixel device packaging region; the second stretched signal line region has two third curved lines and two fourth curved lines, the third curved lines being adjacent to the long side of the pixel device packaging region; and the curvature radii of the first, second, third, and fourth curved lines are all between 0.5 and 5 times the curvature design base value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To make the above and other objects, features, advantages and embodiments of the present invention more easily understood, the accompanying drawings are described as follows:

[0019] Figure 1 It is a front view structural diagram of a complete panel display device of the present invention.

[0020] Figure 2 For the present invention Figure 1 A partial enlarged schematic diagram of part A in the middle.

[0021] Figure 3 For the present invention Figure 2 A partial enlarged schematic diagram of part B in the middle.

[0022] Figure 4 For the present invention Figure 2 A partial enlarged schematic diagram of part C in the middle.

[0023] Figure 5 For the present invention Figure 4 A partial enlarged schematic diagram of part D in the middle.

[0024] Figure 6 For the present invention Figure 4 Schematic diagram of the EE cross-section three-dimensional structure.

[0025] Figure 7 For the present invention Figure 2 Schematic diagram of the FF cross-section structure.

[0026] Figure 8 For the present invention Figure 2 Schematic diagram of the GG cross-section structure.

[0027] Figure 9 For the present invention Figure 2 Schematic diagram of the first embodiment of the HH cross-sectional structure.

[0028] Figure 10 For the present invention Figure 2 Schematic diagram of the second embodiment of the HH cross-sectional structure.

[0029] Figure 11 For the present invention Figure 2 Schematic diagram of the third embodiment of the HH cross-sectional structure.

[0030] Figure 12 For the present invention Figure 2 Schematic diagram of the fourth embodiment of the HH cross-sectional structure.

[0031] Figure 13 The results of the stretching test simulation are shown for the light emitting diode display device of the present invention.

[0032] Figure 14 Schematic diagram of a light-emitting diode on a substrate deviating from a neutral plane in the prior art.

[0033] The accompanying drawings are:

[0034] 1Complete panel display device

[0035] 10 substrates

[0036] 101 pixel component packaging area

[0037] 1012 pixel component package area short side

[0038] 1013 pixel component packaging area long side

[0039] 102 supporting substrate

[0040] 103 flexible substrate

[0041] 1031 Opening

[0042] 11 display area

[0043] 12Surrounding area

[0044] 13 packaging layer

[0045] 14 piercings

[0046] 15, 17 multi-layer packaging structure

[0047] 16 light-emitting units

[0048] 2First stretch signal line area

[0049] 21 First Arc Curve

[0050] 22 Second arc curve

[0051] 3Second stretch signal line area

[0052] 31, 32, 33 metal signal lines

[0053] 34 The third arc curve

[0054] 35 Fourth Arc Curve

[0055] 4. First light-transmitting opening area

[0056] 5. Second light-transmitting opening area

[0057] 8LED82 substrate

[0058] 91 First Direction

[0059] 92 Second Direction

[0060] 93 Third direction

[0061] X1 first distance

[0062] X2 second distance

[0063] Y% Aperture Ratio

[0064] r curvature design basic value DETAILED DESCRIPTION

[0065] The following disclosure provides different embodiments or examples to implement different features of the subject matter provided. The specific examples of components and arrangements described below are intended to simplify the present disclosure and are not intended to be limiting; the size and shape of the components are not limited by the disclosed ranges or values, but may depend on the process conditions or required characteristics of the components. For example, cross-sectional views are used to describe the technical features of the present invention, and these cross-sectional views are schematic diagrams of idealized embodiments. Therefore, differences in the shapes shown in the illustrations due to manufacturing processes and / or tolerances are foreseeable and should not be limiting.

[0066] Furthermore, spatially relative terms, such as "below," "beneath," "lower than," "above," and "higher than," are intended to facilitate description of the relationships between elements or features illustrated in the accompanying drawings. In addition, spatially relative terms encompass not only the directions depicted in the drawings but also different orientations of the elements when in use or operation.

[0067] See also Figures 1 to 12 As shown, it is a front view structure of the complete panel display device of the present invention, a partial enlargement of parts A to D, and schematic diagrams of several embodiments of the EE cross-sectional structure to the HH cross-sectional structure. The complete panel display device 1 of the present invention includes a peripheral area 12 and a display area 11. The peripheral area 12 can be arranged on one side of the display area 11. The peripheral area 12 can surround the display area 11, and one or more peripheral wires and / or components are arranged in the display area 11 and the surrounding area 12. The complete panel display device 1 of the present invention is preferably a flexible and stretchable display device, for example, capable of repeated bending along at least one bending axis. The terms “bended / bending / bend” as used herein refer to curved / curving / curve, bent / bending / bend, folded / folding / fold, rolled / rolling / roll, stretched / stretching / stretch, flexed / flexing / flex, stretchable, or other similar deformations, which are generally referred to as “bent”, “flexed” and / or “bend” hereinafter.

[0068] The present invention provides a light-emitting diode display device comprising a display area 11 comprising: a substrate 10, a plurality of first extended signal line regions 2, a plurality of second extended signal line regions 3, a plurality of first light-transmitting opening regions 4, and a plurality of second light-transmitting opening regions 5. A plurality of pixel element packaging regions 101 are arranged in an array on one side of the substrate 10. Each pixel element packaging region 101 contains at least one light-emitting unit 16 and is rectangular in shape. The substrate 10 defines a first direction 91 extending along a long side 1013 of the pixel element packaging region, a second direction 92 extending along a short side 1012 of the pixel element packaging region, and a third direction 93 perpendicular to the first direction 91 and the second direction 92. The centers of the two pixel element packaging regions 101 are separated by a first distance X1 along the first direction 91 and a second distance X2 along the second direction 92. The pixel device packaging area 101 is designed by stacking a multi-layer packaging structure 15 on the substrate 10 , and the multi-layer packaging structure 15 covers the light-emitting unit 16 .

[0069] A plurality of first stretched signal line regions 2 are arranged in an array, and the first stretched signal line region 2 has a first curved shape. In an embodiment of the present invention, the first curved shape is an elliptical shape. The first stretched signal line region 2 is respectively connected to the two short sides 1012 of the pixel element packaging region, and is a metal signal line 31, 32, 33 made of at least one metal material connected in series with a conductive hole (Via). A plurality of second stretched signal line regions 3 are arranged in an array, and the second stretched signal line region 3 has a second curved shape. In an embodiment of the present invention, the second curved shape is an elliptical shape. The second stretched signal line region 3 is respectively connected to the two long sides 1013 of the pixel element packaging region, and is a metal signal line 31, 32, 33 made of at least one metal material connected in series with a conductive hole (Via). The first stretched signal line area 2 and the second stretched signal line area 3 are both formed by stacking a multi-layer packaging structure 17 on the substrate 10 . The multi-layer packaging structure 17 encapsulates the metal signal lines 31 , 32 , 33 , and the metal signal lines 31 , 32 , 33 are connected in series with several layers of the multi-layer packaging structure 17 .

[0070] A plurality of first light-transmitting opening regions 4 are arranged in an array, each having an aperture ratio (Y%), and are surrounded by the first stretched signal line region 2. A plurality of second light-transmitting opening regions 5 are arranged in an array, each having an aperture ratio (Y%), and are surrounded by the second stretched signal line region 3. In an embodiment of the present invention, the first light-transmitting opening regions 4 and the second light-transmitting opening regions 5 are formed by stacking organic materials on the substrate 10, with inorganic materials removed. The substrate 10 is stacked with a support substrate 102 and a flexible substrate 103. In another embodiment of the present invention, the flexible substrate 103 further has a plurality of openings 1031, each of which is tapered, with the opening area adjacent to the surface of the flexible substrate 103 being larger than the opening area adjacent to the surface of the support substrate 102. In yet another embodiment of the present invention, the flexible substrate 103 further has an encapsulation layer 13. In another embodiment of the present invention, the encapsulation layer 13 and the flexible substrate 102 further comprise a plurality of through-holes 14. These through-holes 14 are tapered, with the opening area adjacent to the encapsulation layer 13 being larger than the opening area adjacent to the support substrate 102. The present invention stacks the first light-transmitting opening region 4 and the second light-transmitting opening region 5 with organic materials, removing inorganic materials to reduce light transmission loss caused by multiple layers of refraction, resulting in high light transmission efficiency. Furthermore, by removing display or telecommunication transmission components from the first light-transmitting opening region 4 and the second light-transmitting opening region 5, problems such as display component disconnection are significantly reduced, thereby enhancing the product's stretchability.

[0071] Since the present invention transmits a single signal through multiple layers of the first stretched signal line area 2 and the second stretched signal line area 3 in series, it avoids the situation where only a single line body breaks due to stretching. The present invention first defines a curvature design basic value r = (X1*X2*Y% / π) 0.5 , where X1 is the first distance, X2 is the second distance, Y% is the aperture ratio, and π is pi. The first stretched signal line region 2 has two first curved lines 21 and two second curved lines 22, the second curved lines 22 being adjacent to the short side 1012 of the pixel device packaging region. The second stretched signal line region 3 has two third curved lines 34 and two fourth curved lines 35, the third curved lines 34 being adjacent to the long side 1013 of the pixel device packaging region. The curvature radii of the first curved lines 21, the second curved lines 22, the third curved lines 34, and the fourth curved lines 35 are all between 0.5 times the curvature design base value r and 5 times the curvature design base value r.

[0072] See also Figure 13As shown, the display result of the tensile test simulation of the light-emitting diode display device of the present invention is carried out. The pixel element packaging area 101 has a first equivalent modulus, the first stretched signal line area 2 and the second stretched signal line area 3 have the same second equivalent modulus, the first light-transmitting opening area 4 and the second light-transmitting opening area 5 have the same third equivalent modulus, and considering the equivalent modulus of each structure in the overall architecture, the first equivalent modulus is greater than the second equivalent modulus, and the second equivalent modulus is greater than the third equivalent modulus. With this design, a stretching process is required during use or manufacturing, because tensile strength (Tensile Strength) = E*h (E = equivalent modulus, h = thickness). Due to changes in thickness or shape, the stress distribution of the cross section after being subjected to force is no longer uniform. When the structure is subjected to force and stretching, the stress will be concentrated at locations with weaker tensile strength. As shown in the results in the figure, the main stretching area of ​​the present invention is located on the second light-transmitting opening area 5, followed by the pixel element packaging area 101 and the second stretching signal line area 3. The pixel element packaging area 101 is the area that is not easily stretched during the stretching process because the multi-layer packaging structure 15 has the largest structural equivalent modulus in the product architecture. Removing the display or telecommunications transmission elements and inorganic stacking from the second light-transmitting opening area 5 as the main stretched area in the overall architecture can greatly reduce the problem of display element breakage. The second stretching signal line area 3 is designed with multi-layer metal transmission lines to disperse the breakage of only a single line due to stretching, which is very important.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A light emitting diode display device, characterized in that: include: A substrate, wherein a side surface of the substrate has a plurality of pixel element packaging areas arranged in an array, the pixel element packaging areas have at least one light-emitting unit, and the pixel element packaging areas are rectangular; A plurality of first stretched signal line regions are arranged in an array, wherein the first stretched signal line regions have a first curved shape and are respectively connected to two short sides of the pixel device packaging regions; A plurality of second stretched signal line regions are arranged in an array, wherein the second stretched signal line regions have a second curved shape and are respectively connected to two long sides of the pixel device packaging regions; A plurality of first light-transmitting opening areas are arranged in an array, wherein the first light-transmitting opening areas have an aperture ratio and are surrounded by the first stretched signal line area; A plurality of second light-transmitting opening areas are arranged in an array. The second light-transmitting opening areas have the aperture ratio, and the second stretched signal line area surrounds the second light-transmitting opening areas.

2. The light emitting diode display device according to claim 1, wherein: The first light-transmitting opening area and the second light-transmitting opening area are formed by stacking organic materials on the substrate, and removing inorganic materials.

3. The light emitting diode display device according to claim 2, wherein: The substrate is stacked with a supporting substrate and a flexible substrate.

4. The light emitting diode display device according to claim 3, wherein: The flexible substrate further has a plurality of openings.

5. The light emitting diode display device according to claim 3, wherein: The flexible substrate further has a packaging layer.

6. The light emitting diode display device according to claim 5, wherein: The packaging layer and the flexible substrate further have a plurality of through holes.

7. The light emitting diode display device according to claim 1, wherein: The pixel element packaging area has a first equivalent modulus, the first stretched signal line area and the second stretched signal line area have the same second equivalent modulus, the first light-transmitting opening area and the second light-transmitting opening area have the same third equivalent modulus, the first equivalent modulus is greater than the second equivalent modulus, and the second equivalent modulus is greater than the third equivalent modulus.

8. The light emitting diode display device according to claim 1, wherein: The first stretched signal line area and the second stretched signal line area are made of at least one metal material and are connected in series by conducting holes.

9. The light emitting diode display device according to claim 1, wherein: The first curved shape and the second curved shape are elliptical shapes.

10. The light emitting diode display device according to claim 1, wherein: The substrate defines a first direction as a direction extending along the long side of the pixel element packaging area, and defines a second direction as a direction extending along the short side of the pixel element packaging area; the center positions of two pixel element packaging areas are separated by a first distance along the first direction, and the center positions of two pixel element packaging areas are separated by a second distance along the second direction, and a curvature design base value r is defined as (X1*X2*Y% / π) 0.5 , where X1 is the first distance, X2 is the second distance, Y% is the aperture ratio, and π is the pi.

11. The light emitting diode display device according to claim 10, wherein: The first stretched signal line area has two first curved curves and two second curved curves, and the second curved curves are adjacent to the short side of the pixel element packaging area; the second stretched signal line area has two third curved curves and two fourth curved curves, and the third curved curves are adjacent to the long side of the pixel element packaging area; and the curvature radii of the first curved curve, the second curved curve, the third curved curve and the fourth curved curve are all between 0.5 times the curvature design basic value and 5 times the curvature design basic value.

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