Stretchable display module and display equipment

Abstract

The invention discloses a stretchable display module and a stretchable display device. The display module comprises pixel islands and a driving module, the pixel islands comprise a first pixel island and a second pixel island, and when the display module is in a stretched state, the orthographic projection of the first pixel island on a substrate of the display module and the orthographic projection of the second pixel island on the substrate of the display module do not completely coincide; the driving module is configured to drive the first light-emitting module on the first pixel island and the second light-emitting module on the second pixel island to emit light. According to the display module provided by the embodiment of the invention, the two pixel islands which are not completely overlapped when the display module is stretched are arranged, so that the pixel density is kept during stretching, and image distortion is avoided. Moreover, the same driving module is arranged to be respectively connected with the first pixel island and the second pixel island so as to drive the two layers of pixel islands to emit light, the driving modules do not need to be arranged for the two layers of pixel islands respectively, the hardware structure of the display module is simplified, and the component cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of display technology, and more specifically, to a stretchable display module and a stretchable display device. Background Art

[0002] The stretchable display device includes an elastic substrate, a plurality of islands arranged on the elastic substrate, and wires connecting the islands. Light-emitting elements and electrodes connected to the light-emitting elements are arranged on the islands. The electrodes on the islands are electrically connected to the wires in the elastic substrate. In the related art, during the stretching process, the increase in the spacing between the pixel islands will cause the pixel density to decrease, resulting in image distortion. Summary of the invention

[0003] Embodiments of the present application provide a stretchable display module and a stretchable display device.

[0004] An embodiment of the present application provides a stretchable display module, the display module comprising:

[0005] Pixel islands, the pixel islands comprising a first pixel island and a second pixel island, when the display module is in a stretched state, an orthographic projection of the first pixel island on the substrate of the display module and an orthographic projection of the second pixel island on the substrate of the display module do not completely overlap;

[0006] A driving module is connected to the first pixel island and the second pixel island respectively, and is configured to drive the first light-emitting module on the first pixel island and the second light-emitting module on the second pixel island to emit light.

[0007] Thus, in the display module and display device of the embodiment of the present application, by setting two pixel islands that do not completely overlap when the display module is stretched, the second pixel island on the second island layer can fill the gap between the first pixel islands, so as to maintain the pixel density when stretched and avoid image distortion. In addition, the same driving module is set to connect the first pixel island and the second pixel island respectively to drive the two layers of pixel islands to emit light, without the need to set up separate driving modules for the two layers of pixel islands, simplifying the hardware structure of the display module and reducing the cost of components.

[0008] In some embodiments, the display module further includes a pixel bridge, and the pixel bridge is used to connect two adjacent pixel islands.

[0009] In this way, two adjacent pixel islands can be connected via the pixel bridge, so that a driving signal can be transmitted between the two pixel islands.

[0010] In some embodiments, the display module also includes a flat layer and a pixel bridge, the flat layer covers the second pixel island, a plurality of preset holes are formed in the flat layer, and along the light-emitting direction of the first light-emitting module, the first pixel island is arranged above the flat layer, and the pixel bridge passes through the preset holes to connect the first pixel island and the second pixel island.

[0011] In this way, by forming a preset hole in the flat layer, the pixel bridge can pass through the preset hole to connect the driving module and the first pixel island and the second pixel island, thereby achieving the goal of setting the same driving module to connect the first pixel island and the second pixel island and ensuring that the first light-emitting module and the second light-emitting module emit light.

[0012] In some embodiments, along the light emitting direction of the first light emitting module, the driving module is disposed below the second pixel island, and the pixel bridge includes a first sub-pixel bridge, and the first sub-pixel bridge passes through the preset hole to connect the first pixel island.

[0013] Thus, by setting the first sub-pixel bridge to pass through the preset hole to connect the first pixel island, only one layer of driving module is required to connect the two layers of pixel islands respectively to drive the two layers of pixel islands to emit light, thereby simplifying the hardware structure.

[0014] In some embodiments, the pixel bridge further includes a second sub-pixel bridge, which is disposed in a driving layer where the driving module is located, and the second sub-pixel bridge is configured to connect the second pixel island and / or the first sub-pixel bridge.

[0015] In this way, all pixel islands can be connected to each other through the first sub-pixel bridge and the second sub-pixel bridge, so that a whole row of pixel islands or a whole column of pixel islands can be driven simultaneously.

[0016] In some embodiments, along the light emitting direction of the first light emitting module, the driving module is disposed above the second pixel island, the pixel bridge includes a third sub-pixel bridge, and the third sub-pixel bridge passes through the preset hole to connect the second pixel island.

[0017] Thus, by setting the third sub-pixel bridge to pass through the preset hole to connect the second pixel island, only one layer of driving module is required to connect the two layers of pixel islands respectively to drive the two layers of pixel islands to emit light, thus simplifying the hardware structure.

[0018] In some embodiments, the pixel bridge further includes a fourth sub-pixel bridge, which is disposed in a driving layer where the driving module is located, and is configured to connect the first pixel island and / or the third sub-pixel bridge.

[0019] In this way, through the third sub-pixel bridge and the fourth sub-pixel bridge, all pixel islands can be connected to each other, so that a whole row of pixel islands or a whole column of pixel islands can be driven simultaneously.

[0020] In some embodiments, the pixel bridge is made of a flexible metal material.

[0021] In some embodiments, the predetermined hole is formed by etching.

[0022] In some embodiments, the first pixel island includes a plurality of first pixel islands arranged in an array, the second pixel island includes a plurality of second pixel islands arranged in an array, and when the display module is not in a stretched state, the projection of the second pixel island on the substrate of the display module overlaps with the projection of the first pixel island on the substrate of the display module.

[0023] In this way, when the display module is not in a stretched state, the projection of the second pixel island on the substrate of the display module overlaps with the projection of the first pixel island on the substrate of the display module, which can reduce the size of the display module when it is not in a stretched state, so that there is no need to increase the length and width of the display module too much to set the second pixel island.

[0024] In some embodiments, the pixel island includes a stacked pixel island substrate, a circuit substrate and a light-emitting module, the pixel island substrate is configured to carry the circuit substrate and the light-emitting module, and the pixel circuit in the circuit substrate is configured to control the light-emitting module to emit light according to a driving signal transmitted by the driving module.

[0025] In this way, the circuit substrate and the light-emitting module in the pixel island are carried on the pixel island substrate. Through the pixel circuit in the circuit substrate, the light-emitting module can be controlled to emit light under the drive signal transmitted by the drive module to realize the display function of the display module.

[0026] In some embodiments, the pixel island further includes an electrode, the driving module is connected to the electrode via a pixel bridge, the electrode is connected to the pixel circuit on the circuit substrate, and the driving module is configured to transmit the driving signal to the electrode via the pixel bridge and the electrode.

[0027] In this way, by providing electrodes, the driving signal can be transmitted to the pixel circuit, so that the pixel circuit can drive the light-emitting module to emit light according to the driving signal.

[0028] In some embodiments, when the display module is in a stretched state, along the stretching direction, if the distance between two adjacent first pixel islands is greater than a preset distance, the driving module is configured to drive the first light-emitting module and the second light-emitting module to emit light simultaneously.

[0029] Thus, when the distance between two adjacent second pixel islands is greater than a preset distance, the first light-emitting module and the second light-emitting module can be controlled to emit light simultaneously to ensure the pixel density of the display module and prevent the display effect of the display module from being reduced due to the influence of stretching.

[0030] In some embodiments, when the display module is not in a stretched state, the driving module is configured to drive the second light-emitting module not to emit light.

[0031] In some embodiments, the display module further includes a strain sensor configured to detect a stretched state of the display module.

[0032] In this way, the stretching state of the display module can be determined according to the strain sensor, thereby determining whether to control the second light emitting module to emit light.

[0033] An embodiment of the present application provides a stretchable display device, wherein the display device includes a display module as described in any of the above embodiments.

[0034] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0036] Figure 1 is one of the schematic diagrams of a display module according to some embodiments of the present application;

[0037] Figure 2 This is a second schematic diagram of a display module according to some embodiments of the present application;

[0038] Figure 3 This is a third schematic diagram of a display module according to some embodiments of the present application;

[0039] Figure 4 yes Figure 3 As shown, it is a schematic cross-sectional view of the display module along the AA' section line;

[0040] Figure 5 yes Figure 3 The cross-sectional view of the display module shown is along the BB' section line;

[0041] Figure 6 yes Figure 3 The cross-sectional view of the display module shown is along the CC' section line;

[0042] Figure 7This is a fourth schematic diagram of a display module according to some embodiments of the present application;

[0043] Figure 8 yes Figure 7 The cross-sectional view of the display module shown is along the DD' section line;

[0044] Fig. 9 yes Figure 7 The cross-sectional view of the display module shown is along the EE' section line;

[0045] Fig.10 yes Figure 7 The cross-sectional view of the display module shown is along the FF' section line;

[0046] Fig.11 yes Figure 2 The schematic diagram of the display module shown is in a stretched state;

[0047] Fig.12 yes Figure 7 The schematic diagram shown shows that the display module is in a stretched state.

[0048] Description of Figure Numbers:

[0049] Display module 100, display area 101, non-display area 103, pixel island 10, first pixel island 11, first light-emitting module 111, second pixel island 13, second light-emitting module 131, pixel island substrate 15, circuit substrate 17, electrode 19, light-emitting module 1111, red light-emitting unit 1101, green light-emitting unit 1103, blue light-emitting unit 1105, encapsulation layer 1113, driving module 30, substrate 50, pixel bridge 70, first sub-pixel bridge 71, second sub-pixel bridge 73, third sub-pixel bridge 75, fourth sub-pixel bridge 77, flat layer 90, preset hole 110, first flexible substrate 130, second flexible substrate 150. DETAILED DESCRIPTION

[0050] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0051] The stretchable display device includes an elastic substrate, a plurality of islands arranged on the elastic substrate, and wires connecting the islands. Light-emitting elements and electrodes connected to the light-emitting elements are arranged on the islands. The electrodes on the islands are electrically connected to the wires in the elastic substrate. In the related art, during the stretching process, the increase in the spacing between the pixel islands will cause the pixel density to decrease, resulting in image distortion.

[0052] Based on the above possible problems, please refer to Figures 1 to 3 The embodiment of the present application provides a stretchable display module 100, the display module 100 includes a pixel island 10 and a driving module 30, the pixel island 10 includes a first pixel island 11 and a second pixel island 13, when the display module 100 is in a stretched state, the orthographic projection of the first pixel island 11 on the substrate 50 of the display module 100 and the orthographic projection of the second pixel island 13 on the substrate 50 of the display module 100 do not completely overlap;

[0053] The driving module 30 is connected to the first pixel island 11 and the second pixel island 13 respectively, and is configured to drive the first light-emitting module 111 on the first pixel island 11 and the second light-emitting module 131 on the second pixel island 13 to emit light.

[0054] Specifically, the pixel islands 10 include a plurality of pixel islands 10, and adjacent pixel islands 10 are connected by pixel bridges 70. The pixel islands 10 are rigid structures, and the pixel bridges 70 are flexible structures. The pixel bridges 70 can be deformed under the action of external forces, so that the distance between two adjacent pixel islands 10 changes, thereby putting the display module 100 in a stretched state.

[0055] The first pixel islands 11 include a plurality of first pixel islands 11, and the plurality of first pixel islands 11 are arranged in an array. Figure 1 As shown in (a) above, the first light-emitting module 111 of the first pixel island 11 emits light to display a corresponding image.

[0056] The second pixel islands 13 include a plurality of second pixel islands 13, and the plurality of second pixel islands 13 are arranged in an array. Figure 1 As shown in (b), the first projection of the second pixel island 13 array on the substrate 50 of the display module 100 does not completely overlap with the second projection of the first pixel island 11 array on the substrate 50 of the display module 100. It should be noted that the incomplete overlap here includes only partial overlap and no overlap. That is, when the display module 100 is in a stretched state, the first projection only partially overlaps with the second projection, or the first projection does not overlap with the second projection.

[0057] When the display module 100 is in a stretched state, the distance between two adjacent first pixel islands 11 along the stretching direction becomes larger than when no stretching occurs. At this time, the distance between the two first pixel islands 11 is relatively large. If only the first pixel unit emits light, there will be a problem of lower resolution due to a decrease in pixel density caused by stretching. Therefore, in the embodiment of the present application, when the display module 100 is in a stretched state, the second pixel island 13 is controlled to emit light to fill in the light between the two adjacent first pixel islands 11 with a larger distance between them, thereby avoiding the problem of a decrease in pixel density due to stretching.

[0058] In addition, the same driving module 30 is provided to connect the first pixel island 11 and the second pixel island 13 to drive the first light-emitting module 111 on the first pixel island 11 and the second light-emitting module 131 on the second pixel island 13 to emit light. In the embodiment of the present application, there is no need to separately provide driving modules 30 for the two layers of pixel islands 10, thereby reducing the hardware structure of the display module 100 and reducing the cost of the display module 100.

[0059] Furthermore, since the first pixel island 11 and the second pixel island 13 are arranged in two layers, it is necessary to route through one of the pixel islands 10, and a hole can be dug in the layer where the second pixel island 13 is located so that the pixel bridge 70 can pass through the layer where the second pixel island 13 is located to connect to the second pixel island 13.

[0060] The display module 100 can be used for an OLED display or an iLED display, and the light emitting module emits light in a top emission manner for display.

[0061] In this way, by setting two types of pixel islands 10 that do not completely overlap when the display module 100 is stretched, the second pixel islands 13 on the second island layer can fill the gaps between the first pixel islands 11, so as to maintain the pixel density during stretching and avoid image distortion. In addition, the same driving module 30 is set to connect the first pixel island 11 and the second pixel island 13 respectively to drive the two layers of pixel islands 10 to emit light, and there is no need to set up separate driving modules 30 for the two layers of pixel islands 10, which simplifies the hardware structure of the display module 100 and reduces the cost of components.

[0062] See also Figure 2 and Figure 3 In some embodiments, the display module 100 further includes a pixel bridge 70 , and the pixel bridge 70 is used to connect two adjacent pixel islands 10 .

[0063] Specifically, any two adjacent pixel islands 10 are connected by a pixel bridge 70. Furthermore, adjacent pixel islands 10 are connected by pixel bridges 70 in both the row direction and the column direction, so that all pixel islands 10 can be directly or indirectly connected to each other in a mesh.

[0064] In one embodiment, the first pixel islands 11 and the second pixel islands 13 are arranged in an array, and the array of the first pixel islands 11 and the array of the second pixel islands 13 are arranged alternately. That is, in the array composed of all pixel islands 10, a row of pixel islands 10 are first pixel islands 11, and a row of pixel islands 10 are second pixel islands 13, and the pixel islands 10 array is formed by the alternate arrangement.

[0065] The pixel bridge 70 can also be used to connect the driving module 30 to transmit the driving signal of the driving module 30 to the pixel island 10. Although the pixel island 10 at the boundary lacks the adjacent pixel island 10, the pixel bridge 70 is still needed to connect the driving module 30.

[0066] In one embodiment, each pixel island 10 is connected to four pixel bridges 70. The first pixel island 10 and the last pixel island 10 in each row are connected to the driving module 30 to receive the driving signal transmitted by the driving module 30, and transmit the driving signal to all pixel islands 10 in the row to drive the light-emitting modules 1111 of all pixel islands 10 in the row to emit light.

[0067] In some embodiments, the material of the pixel bridge 70 is a flexible metal material. The flexible metal material has the properties of being deformable and conductive. When the display module 100 is stretched, the pixel bridge 70 is deformed, so that the distance between two adjacent pixel islands 10 becomes larger, thereby stretching the display module 100. At the same time, the driving module 30 can transmit the driving signal to the pixel island 10 through the pixel bridge 70 to drive the light-emitting module 1111 to emit light.

[0068] In this way, two adjacent pixel islands 10 may be connected via the pixel bridge 70 , so that a driving signal can be transmitted between the two pixel islands 10 .

[0069] See also Figure 3 and Figure 4 In some embodiments, the display module 100 further includes a planar layer 90 and a pixel bridge 70, wherein the planar layer 90 covers the second pixel island 13, and a plurality of preset holes 110 are formed in the planar layer 90. In the light-emitting direction along the first light-emitting module 111, the first pixel island 11 is disposed above the planar layer 90, and the pixel bridge 70 passes through the preset holes 110 to connect the first pixel island 11 and the second pixel island 13.

[0070] Specifically, since the first pixel island 11 needs to be disposed above the second pixel island 13, a covering planarization layer 90 is provided on the second pixel island 13, and the first pixel island 11 is disposed above the planarization layer 90, so that the first pixel island 11 can be disposed on the same plane.

[0071] Since the driving module 30 needs to connect the first pixel island 11 and the second pixel island 13 through the pixel bridge 70, and the planar layer 90 covers the second pixel island 13, the pixel bridge 70 needs to pass through the planar layer 90 to achieve the connection to the first pixel island 11 or the second pixel island 13.

[0072] Therefore, the planar layer 90 is bored to form a preset hole 110. The pixel bridge 70 can pass through the planar layer 90 through the preset hole 110 and be exposed from above the planar layer 90 to connect to the first pixel island 11 on the planar layer 90. Alternatively, the pixel bridge 70 is exposed from below the planar layer 90 to connect to the second pixel island 13 below the planar layer 90.

[0073] In some embodiments, the material of the planar layer 90 is a transparent material, so that the light emitted by the second light emitting module 131 can be emitted through the planar layer 90 .

[0074] It should be noted that the material of the flat layer 90 is a flexible material that can be deformed, so that the display module 100 can be stretched.

[0075] In some embodiments, the preset hole 110 is formed by etching. The preset hole 110 can be formed by etching in the planar layer 90 using a semiconductor process, so that the pixel bridge 70 passes through the planar layer 90 to connect the first pixel island 11 or the second pixel island 13 .

[0076] In this way, by forming a preset hole 110 in the flat layer 90, the pixel bridge 70 can pass through the preset hole 110 to connect the driving module 30 and the first pixel island 11 and the second pixel island 13, thereby achieving the goal of setting the same driving module 30 to connect the first pixel island 11 and the second pixel island 13, and ensuring that the first light-emitting module 111 and the second light-emitting module 131 emit light.

[0077] See also Figures 3 to 6 In some embodiments, along the light emitting direction of the first light emitting module 111 , the driving module 30 is disposed below the second pixel island 13 , and the pixel bridge 70 includes a first sub-pixel bridge 71 , which passes through the preset hole 110 to connect the first pixel island 11 .

[0078] Specifically, a first flexible substrate 130 may be provided below the second pixel island 13, and the first flexible substrate 130 and the driving module 30 are provided in the same layer. A plurality of first sub-pixel bridges 71 are provided in the flat layer 90, and the first sub-pixel bridges 71 are used to connect the first pixel island 11 and the driving module 30. The driving module 30 can transmit a driving signal to the first pixel island 11 through the first sub-pixel bridge 71 to drive the first light-emitting module 111 on the first pixel island 11 to emit light.

[0079] Furthermore, the first pixel island 11 includes a first electrode 19 and a pixel circuit, and the first light-emitting module 111 includes a plurality of light-emitting units, for example, a red light-emitting unit 1101 , a green light-emitting unit 1103 , and a blue light-emitting unit 1105 .

[0080] The first electrode 19 is connected to the pixel circuit and is used to receive a driving signal transmitted by the driving module 30 and transmit the driving signal to the pixel circuit, so that the light emitting module 1111 can emit light under the driving of the driving signal.

[0081] It should be noted that the display module 100 includes a display area 101 and a non-display area 103. The first pixel island 11 and the second pixel island 13 are both arranged in the display area 101, and the driving module 30 is arranged in the non-display area 103 of the display module 100. In other words, the driving module 30 is not located directly below the second pixel island 13, but for the multi-level display module 100, in the light emitting direction, the driving module 30 is arranged in a layer below the layer where the second pixel island 13 is located.

[0082] Thus, by setting the first sub-pixel bridge 71 to pass through the preset hole 110 to connect the first pixel island 11, only one layer of driving module 30 is required to connect the two layers of pixel islands 10 respectively to drive the two layers of pixel islands 10 to emit light, thereby simplifying the hardware structure.

[0083] See also Figures 3 to 6 In some embodiments, the pixel bridge 70 further includes a second sub-pixel bridge 73 , which is disposed in the driving layer where the driving module 30 is located, and the second sub-pixel bridge 73 is configured to connect the second pixel island 13 and / or the first sub-pixel bridge 71 .

[0084] Specifically, the second sub-pixel bridge 73 is arranged in the driving layer together with the driving module 30, and is used to connect two adjacent second pixel islands 13, the first sub-pixel bridge 71 connected to two connected first sub-pixel islands 10, or connect the first sub-pixel bridge 71 and the second pixel island 13.

[0085] In one embodiment, in the display module 100, the pixel islands 10 in the same row are all first pixel islands 11 or second pixel islands 13, and the pixel islands 10 in the same column include alternating first pixel islands 11 or second pixel islands 13. Then, in the row where the first pixel island 11 is located, the second sub-pixel bridge 73 is used to connect the first sub-pixel bridge 71 connected to two adjacent first pixel islands 11. In the row where the second pixel island 13 is located, the second sub-pixel bridge 73 is used to connect two adjacent second pixel islands 13. In each column of pixel islands 10, the second sub-pixel bridge 73 is used to connect the adjacent second pixel island 13 and the first sub-pixel bridge 71 connected to the adjacent first pixel island 11.

[0086] In this way, all pixel islands 10 can be connected to each other through the first sub-pixel bridge 71 and the second sub-pixel bridge 73 , so that a whole row of pixel islands 10 or a whole column of pixel islands 10 can be driven simultaneously.

[0087] See also Figures 7 to 10In some embodiments, along the light emitting direction of the first light emitting module 111 , the driving module 30 is disposed above the second pixel island 13 , and the pixel bridge 70 includes a third sub-pixel bridge 75 , which passes through the preset hole 110 to connect the second pixel island 13 .

[0088] Specifically, the driving module 30 can be disposed in the second flexible substrate 150 above the second pixel island 13. A plurality of third sub-pixel bridges 75 are disposed in the planar layer 90, and the third sub-pixel bridges 75 are used to connect the second pixel island 13 and the driving module 30. The driving module 30 can transmit a driving signal to the second pixel island 13 through the third sub-pixel bridges 75 to drive the second light-emitting module 131 on the second pixel island 13 to emit light.

[0089] Since the second pixel island 13 is disposed below the planar layer 90 and the driving module 30 is above the planar layer 90, if the driving module 30 and the second pixel island 13 need to be connected, the planar layer 90 needs to be passed through. Therefore, a preset hole 110 is provided on the planar layer 90 so that the pixel bridge 70 can pass through the planar layer 90 through the preset hole 110 to connect to the second pixel island 13.

[0090] As mentioned above, the first pixel island 11 and the second pixel island 13 are both arranged in the display area 101, and the driving module 30 is arranged in the non-display area 103 of the display module 100. In other words, the driving module 30 is not located directly above the planar layer 90, but for the multi-level display module 100, the driving module 30 is arranged on the upper layer of the planar layer 90 along the light emitting direction.

[0091] Thus, by setting the third sub-pixel bridge 75 to pass through the preset hole 110 to connect the second pixel island 13, only one layer of driving module 30 is required to connect the two layers of pixel islands 10 respectively to drive the two layers of pixel islands 10 to emit light, thereby simplifying the hardware structure.

[0092] See also Figures 7 to 10 In some embodiments, the pixel bridge 70 further includes a fourth sub-pixel bridge 77 , which is disposed in the driving layer where the driving module 30 is located, and the fourth sub-pixel bridge 77 is configured to connect the first pixel island 11 and / or the third sub-pixel bridge 75 .

[0093] Specifically, the fourth sub-pixel bridge 77 is arranged in the driving layer together with the driving module 30, and is used to connect two adjacent second pixel islands 13, the third sub-pixel bridge 75 connected to two connected first sub-pixel islands 10, or connect the third sub-pixel bridge 75 and the second pixel island 13.

[0094] In one embodiment, in the display module 100, the pixel islands 10 in the same row are all first pixel islands 11 or second pixel islands 13, and the pixel islands 10 in the same column include alternating first pixel islands 11 or second pixel islands 13. Then, in the row where the first pixel island 11 is located, the fourth sub-pixel bridge 77 is used to connect the third sub-pixel bridge 75 connected to two adjacent first pixel islands 11. In the row where the second pixel island 13 is located, the fourth sub-pixel bridge 77 is used to connect two adjacent second pixel islands 13. In each column of pixel islands 10, the fourth sub-pixel bridge 77 is used to connect the adjacent second pixel island 13 and the third sub-pixel bridge 75 connected to the adjacent first pixel island 11.

[0095] In this way, through the third sub-pixel bridge 75 and the fourth sub-pixel bridge 77 , all the pixel islands 10 can be connected to each other, so that the entire row of pixel islands 10 or the entire column of pixel islands 10 can be driven simultaneously.

[0096] See also Figure 2 and Figure 4 In some embodiments, the first pixel island 11 includes a plurality of first pixel islands 11 arranged in an array, and the second pixel island 13 includes a plurality of second pixel islands 13 arranged in an array. When the display module 100 is not in a stretched state, the projection of the second pixel island 13 on the substrate 50 of the display module 100 overlaps with the projection of the first pixel island 11 on the substrate 50 of the display module 100.

[0097] Specifically, the first pixel islands 11 are arranged in an array, the second pixel islands 13 are arranged in an array, and the first pixel islands 11 and the second pixel islands 13 are respectively arranged in two layers. The projection of the second pixel islands 13 on the substrate 50 of the display module 100 overlaps with the projection of the first pixel islands 11 on the substrate 50 of the display module 100, that is, from the direction of the user looking at the display module 100, the second pixel islands 13 are at least partially blocked by the first pixel islands 11.

[0098] When the display module 100 is not in a stretched state, the size of the display module 100 is small, and the distance between two adjacent first pixel islands 11 is small. At this time, the second pixel islands 13 are at least partially blocked by the first pixel islands 11. The second pixel islands 13 are arranged below the first pixel islands 11, and the length and width of the display module 100 do not need to be changed too much.

[0099] In some embodiments, when the display module 100 is not in a stretched state, the driving module 30 is configured to drive the second light-emitting module 131 not to emit light. Since the second pixel island 13 is at least partially blocked by the first pixel island 11 when it is not in a stretched state, even if the second light-emitting module 131 emits light at this time, the light cannot be completely transmitted, and the lighting effect is poor. Moreover, at this time, the distance between the two adjacent first pixel islands 11 is small, and a better display effect can be achieved by relying only on the first pixel island 11 to emit light. Therefore, when the display module 100 is not in a stretched state, there is no need to control the second light-emitting module 131 to emit light, which can reduce the light-emitting time of the second light-emitting module 131 and extend the service life of the second light-emitting module 131.

[0100] In this way, when the display module 100 is not in a stretched state, the projection of the second pixel island 13 on the substrate 50 of the display module 100 overlaps with the projection of the first pixel island 11 on the substrate 50 of the display module 100, which can reduce the size of the display module 100 when it is not in a stretched state, so that there is no need to increase the length and width of the display module 100 too much to set the second pixel island 13.

[0101] See also Figure 4 In some embodiments, the pixel island 10 includes a stacked pixel island substrate 15, a circuit substrate 17 and a light-emitting module 1111, the pixel island substrate 15 is configured to carry the circuit substrate 17 and the light-emitting module 1111, and the pixel circuit in the circuit substrate 17 is configured to control the light-emitting module 1111 to emit light according to a driving signal transmitted by the driving module 30.

[0102] Specifically, along the light-emitting direction, the pixel island 10 includes a stacked pixel island substrate 15, a circuit substrate 17 and a light-emitting module 1111. The pixel island substrate 15 is used to carry other components on the pixel island 10. A pixel circuit is provided on the circuit substrate 17, and the pixel circuit is used to control the light-emitting module 1111 to emit light under the drive of a driving signal. The light-emitting module 1111 is arranged on the topmost layer of the pixel island 10 to prevent the emitted light from being blocked by other components of the pixel island 10, affecting the display effect and efficiency. In addition, the pixel island 10 also includes an encapsulation layer 1113, which covers the light-emitting module 1111 to protect the light-emitting module 1111.

[0103] Furthermore, the pixel island 10 is a rigid structure to prevent the pixel island 10 from being deformed when the display component is stretched, thereby preventing the normal operation of the light-emitting module 1111 from being affected.

[0104] In this way, the circuit substrate 17 and the light-emitting module 1111 in the pixel island 10 are carried on the pixel island substrate 15. Through the pixel circuit in the circuit substrate 17, the light-emitting module 1111 can be controlled to emit light under the drive signal transmitted by the driving module 30 to realize the display function of the display module 100.

[0105] See also Figure 4 In some embodiments, the pixel island 10 further includes an electrode 19 , the driving module 30 is connected to the electrode 19 via a pixel bridge 70 , the electrode 19 is connected to a pixel circuit on the circuit substrate 17 , and the driving module 30 is configured to transmit a driving signal to the electrode 19 via the pixel bridge 70 and the electrode 19 .

[0106] Specifically, the electrode 19 is connected to the pixel circuit and the pixel bridge 70, and is used to receive the driving signal transmitted by the driving module 30 through the pixel bridge 70, so as to transmit the driving signal to the pixel circuit, so that the pixel circuit controls the light-emitting module 1111 to emit light according to the driving signal.

[0107] Furthermore, the location of the electrode 19 in the second pixel island 13 may be determined according to the location of the driving module 30. For example, see Figure 8 In the case where the driving module 30 is disposed above the planar layer 90, in order to minimize the depth of the preset hole 110, the electrode 19 of the second pixel island 13 and the circuit substrate 17 can be disposed together above the pixel island substrate 15. For another example, see Figure 4 In the case where the driving module 30 is disposed above the flat layer 90, in order to avoid setting too many preset holes 110, the electrode 19 of the second pixel island 13 can be arranged to pass through the pixel island substrate 15 and be exposed from below the pixel island substrate 15. This allows the electrode 19 to be directly connected to the pixel bridge 70 without the need for the preset hole 110.

[0108] In this way, by providing the electrode 19 , the driving signal can be transmitted to the pixel circuit, so that the pixel circuit can drive the light-emitting module 1111 to emit light according to the driving signal.

[0109] See also Figure 2 , Fig.11 and Fig.12 In some embodiments, when the display module 100 is in a stretched state, along the stretching direction, if the distance between two adjacent first pixel islands 11 is greater than a preset distance, the driving module 30 is configured to drive the first light-emitting module 111 and the second light-emitting module 131 to emit light simultaneously.

[0110] Specifically, the preset spacing is a pre-set distance value, which can be set according to actual needs. After the spacing between two adjacent first pixel islands 11 is greater than the preset spacing, the display module 100 is stretched to a greater extent and the pixel density decreases. And because the display module 100 is in a stretched state, at this time, the projection of the first pixel island 11 on the substrate 50 of the display module 100 and the orthographic projection of the second pixel island 13 on the substrate 50 of the display module 100 do not completely overlap, that is, they only partially overlap, or do not overlap at all. Therefore, the determination module can be controlled to drive the second light-emitting module 131 of the second pixel island 13 and the first light-emitting module 111 of the first pixel island 11 to emit light at the same time to supplement the gap between the first pixel islands 11.

[0111] In one embodiment, see Figure 2 and Fig.11 Before stretching, the distance between two adjacent first pixel islands 11 is a1, a1 is smaller than the preset distance, and the second pixel island 13 does not emit light. After stretching, the distance between two adjacent first pixel islands 11 is a2, a2 ​​is larger than the preset distance, and the second pixel island 13 emits light. Before and after stretching, the distance b1 between two adjacent pixel islands 10 along the non-stretching direction does not change.

[0112] In another embodiment, see Fig.12 After stretching, the distance between the two adjacent first pixel islands 11 is a3, and a3 is greater than the preset distance. At this time, the second pixel island 13 between the two adjacent first pixel islands 11 is completely exposed and not blocked. The driving module 30 drives the first pixel island 11 and the second pixel island 13 to emit light simultaneously.

[0113] Thus, when the distance between two adjacent second pixel islands 13 is greater than a preset distance, the first light-emitting module 111 and the second light-emitting module 131 can be controlled to emit light simultaneously to ensure the pixel density of the display module 100 and prevent the display effect of the display module 100 from being reduced due to stretching.

[0114] In some embodiments, the display module 100 further includes a strain sensor, and the strain sensor is used to detect the stretching state of the display module 100 .

[0115] Specifically, the strain sensor can determine the stretched state of the display module 100 according to the strain generated by the deformation of the display module 100, and can adjust the image displayed by the display module 100 according to the stretched state of the display module 100. In one embodiment, when it is determined that the display module 100 is in the stretched state, the second light emitting module 131 is controlled to emit light.

[0116] In this way, the stretching state of the display module 100 can be determined according to the strain sensor, thereby determining whether to control the second light emitting module 131 to emit light.

[0117] An embodiment of the present application provides a stretchable display device, and the display device includes a display module 100 as described in any of the above embodiments.

[0118] Specifically, the display device includes an OLED display device or an iLED display device.

[0119] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0120] In addition, the term "connection" should be understood in a broad sense, for example, it can include fixed connection, detachable connection, or integral connection; it can include direct connection, indirect connection through an intermediate medium, and internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0121] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0122] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0123] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A stretchable display module, characterized in that: The display module comprises: Pixel islands, the pixel islands comprising a first pixel island and a second pixel island, when the display module is in a stretched state, an orthographic projection of the first pixel island on the substrate of the display module and an orthographic projection of the second pixel island on the substrate of the display module do not completely overlap; A driving module, wherein the driving module is connected to the first pixel island and the second pixel island respectively, and the driving module is configured to drive the first light-emitting module on the first pixel island and the second light-emitting module on the second pixel island to emit light.

2. The display module according to claim 1, characterized in that: The display module further includes a pixel bridge, and the pixel bridge is used to connect two adjacent pixel islands.

3. The display module according to claim 1, characterized in that: The display module also includes a flat layer and a pixel bridge, the flat layer covers the second pixel island, a plurality of preset holes are formed in the flat layer, and the first pixel island is arranged above the flat layer in the light-emitting direction along the first light-emitting module, and the pixel bridge passes through the preset holes to connect the first pixel island and the second pixel island.

4. The display module according to claim 3, characterized in that: In the light emitting direction of the first light emitting module, the driving module is arranged below the second pixel island, the pixel bridge comprises a first sub-pixel bridge, and the first sub-pixel bridge passes through the preset hole to connect the first pixel island.

5. The display module according to claim 4, characterized in that: The pixel bridge further includes a second sub-pixel bridge, which is disposed in a driving layer where the driving module is located, and the second sub-pixel bridge is configured to connect the second pixel island and / or the first sub-pixel bridge.

6. The display module according to claim 3, characterized in that: In the light emitting direction of the first light emitting module, the driving module is arranged above the second pixel island, the pixel bridge comprises a third sub-pixel bridge, and the third sub-pixel bridge passes through the preset hole to connect the second pixel island.

7. The display module according to claim 6, characterized in that: The pixel bridge further includes a fourth sub-pixel bridge, which is disposed in the driving layer where the driving module is located, and is configured to connect the first pixel island and / or the third sub-pixel bridge.

8. The display module according to any one of claims 2 to 7, characterized in that: The material of the pixel bridge is a flexible metal material.

9. The display module according to any one of claims 3 to 7, characterized in that: The preset hole is formed by etching.

10. The display module according to claim 1, characterized in that: The first pixel islands include a plurality of first pixel islands arranged in an array, the second pixel islands include a plurality of second pixel islands arranged in an array, and when the display module is not in a stretched state, the projection of the second pixel islands on the substrate of the display module overlaps with the projection of the first pixel islands on the substrate of the display module.

11. The display module according to claim 1, characterized in that: The pixel island includes a stacked pixel island substrate, a circuit substrate and a light-emitting module, the pixel island substrate is configured to carry the circuit substrate and the light-emitting module, and the pixel circuit in the circuit substrate is configured to control the light-emitting module to emit light according to a driving signal transmitted by the driving module.

12. The display module according to claim 11, characterized in that: The pixel island further includes an electrode, the driving module is connected to the electrode via a pixel bridge, the electrode is connected to the pixel circuit on the circuit substrate, and the driving module is configured to transmit the driving signal to the electrode via the pixel bridge and the electrode.

13. The display module according to claim 1, characterized in that: When the display module is in a stretched state, along the stretching direction, if the distance between two adjacent first pixel islands is greater than a preset distance, the driving module is configured to drive the first light-emitting module and the second light-emitting module to emit light simultaneously.

14. The display module according to claim 1, characterized in that: When the display module is not in a stretched state, the driving module is configured to drive the second light-emitting module not to emit light.

15. The display module according to any one of claims 1 to 7 or 10 to 14, characterized in that: The display module further includes a strain sensor configured to detect a stretched state of the display module.

16. A stretchable display device, characterized in that: The display device comprises a display module as described in any one of claims 1-15.

Images