Touch display device

Abstract

The utility model discloses a touch display device, which is characterized in that an array substrate is provided with a plurality of first connecting terminals, the plurality of first connecting terminals are arranged at intervals, a flexible circuit board is electrically connected with the array substrate, the flexible circuit board is electrically connected with the first connecting terminals, and a plurality of second connecting terminals are arranged on one surface, close to the array substrate, of a touch layer. The plurality of first connecting terminals are arranged at intervals, the plurality of second connecting terminals are arranged at intervals, the plurality of side surface wires are arranged at intervals, each side surface wire is electrically connected with each first connecting terminal and each second connecting terminal, and the side surface wires are positioned on one side surfaces of the first connecting terminals and the second connecting terminals; according to the technical scheme, the array substrate and the touch control layer are electrically connected with the driving circuit board through the flexible circuit board, signal transmission is achieved, compared with a conventional scheme, two flexible circuit boards do not need to be used for binding the driving circuit board, the touch control layer and the array substrate, and the width of the lower frame of the touch control display device is reduced.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically to a touch display device. Background Technology

[0002] Conventional touch display devices include an array substrate, a touch layer, a first flexible circuit board, a second flexible circuit board, and a driving circuit board. The array substrate is electrically connected to the driving circuit board through the first flexible circuit board, and the touch layer is electrically connected to the driving circuit board through the second flexible circuit board. Since the first and second flexible circuit boards of the touch display device are located on different planes and require two flexible circuit board bonding processes, the bonding of the first and second flexible circuit boards with the driving circuit board requires a larger space in the bezel area of ​​the touch display device, resulting in an increase in the width of the bottom bezel of the touch display device. Utility Model Content

[0003] Embodiments of this application provide a touch display device to reduce the width of the bottom bezel of the touch display device.

[0004] Embodiments of this application provide a touch display device, including:

[0005] An array substrate, wherein the array substrate is provided with a plurality of first connection terminals, the plurality of first connection terminals being spaced apart;

[0006] A light-emitting substrate, wherein the light-emitting substrate is disposed on one side of the array substrate;

[0007] A cover plate is disposed on the side of the light-emitting substrate away from the array substrate;

[0008] A flexible circuit board, wherein the flexible circuit board is electrically connected to the array substrate and is also electrically connected to the first connection terminal;

[0009] A driving circuit board, which is electrically connected to the flexible circuit board;

[0010] A touch layer is disposed on a surface of the cover plate near the light-emitting substrate. The surface of the touch layer near the array substrate is provided with a plurality of second connection terminals, which are spaced apart.

[0011] Multiple side conductors are spaced apart, and each side conductor is electrically connected to each of the first connection terminal and each of the second connection terminals, wherein the side conductor is located on one side of the first connection terminal and the second connection terminal.

[0012] Furthermore, the touch display device includes a display area and a non-display area surrounding the display area. The non-display area includes a lower border area and an upper border area opposite to the lower border area. A plurality of first connection terminals and a plurality of second connection terminals are located in the upper border area. In a top view of the touch display device, a portion of each second connection terminal overlaps with each first connection terminal.

[0013] Furthermore, the non-display area also includes a side bezel area, the array substrate is provided with a third connection terminal, a plurality of the third connection terminals are spaced apart, and the plurality of the third connection terminals are located in the side bezel area, and the flexible circuit board is electrically connected to the first connection terminal through the third connection terminal.

[0014] Furthermore, at least a portion of the side conductor covers the side of the first connection terminal and the side of the second connection terminal.

[0015] Furthermore, the side conductor extends toward the array substrate, and the surface of the side conductor away from the cover plate is not lower than the surface of the array substrate away from the cover plate. The side conductor also extends toward the cover plate, and the surface of the side conductor away from the array substrate is not higher than the surface of the cover plate away from the array substrate.

[0016] Furthermore, the width of the first connecting terminal is 0.2mm-1mm, the width of the second connecting terminal is 0.2mm-1mm, and the width of the side conductor is 0.2mm-1mm.

[0017] Furthermore, the first spacing between two adjacent first connecting terminals is 0.2mm-1mm, the second spacing between two adjacent second connecting terminals is 0.2mm-1mm, and the third spacing between two adjacent side conductors is 0.2mm-1mm.

[0018] Furthermore, the thickness of the side conductor is 10µm to 30µm.

[0019] Furthermore, there is a fourth spacing between the first connecting terminal and the second connecting terminal, the fourth spacing being no greater than 5µm.

[0020] Furthermore, the material of the touch layer is indium tin oxide.

[0021] The beneficial effects of this application are:

[0022] This application provides a touch display device. The array substrate has multiple first connection terminals spaced apart. A flexible circuit board is electrically connected to the array substrate and to the first connection terminals. A touch layer has multiple second connection terminals spaced apart on one surface near the array substrate. Multiple side conductors are spaced apart, and each side conductor is electrically connected to each of the first and second connection terminals. The side conductors are located on one side of the first and second connection terminals. This means that a single flexible circuit board is used to electrically connect the array substrate, touch layer, and driving circuit board to achieve signal transmission. Compared to conventional solutions, this eliminates the need for two separate flexible circuit boards to bind the driving circuit board to the touch layer and array substrate, saving space on the bottom bezel and thus reducing the width of the bottom bezel of the touch display device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a conventional touch display device;

[0024] Figure 2 This is a schematic diagram of the touch display device of this application;

[0025] Figure 3 This is a top view of the array substrate of this application;

[0026] Figure 4 This is a top view of the touch layer in this application;

[0027] Figure 5 This is a schematic diagram of the connection between the array substrate and the touch layer in this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100 - Array substrate; 110 - First connection terminal; 120 - Third connection terminal; 200 - Light-emitting substrate; 300 - Cover plate; 400 - Flexible circuit board; 500 - Driver circuit board; 600 - Touch layer; 610 - Second connection terminal; 700 - Side conductor; 800 - Polarizing layer; 900 - Heat dissipation layer; 1000 - Anisotropic conductive adhesive; 1100 - Signal connection line.

[0030] AA - Display area; NA - Non-display area; NA1 - Bottom border area; NA2 - Top border area; NA3 - Side border area.

[0031] 10 - Array substrate; 20 - Touch layer; 30 - First flexible circuit board; 40 - Second flexible circuit board. Detailed Implementation

[0032] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings. The technical solutions described below are for illustrative purposes only and should not be construed as limiting the scope of protection of this application.

[0033] Furthermore, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different technical features. The terms "multiple" and similar words indicate two or more unless otherwise expressly specified.

[0034] Embodiments of this application provide a touch display device, referencing Figures 2-5 The touch display device includes an array substrate 100, a light-emitting substrate 200, a cover plate 300, a flexible circuit board 400, a driving circuit board 500, a touch layer 600, and multiple side wires 700.

[0035] Specifically, the array substrate 100 is provided with a plurality of first connection terminals 110, which are spaced apart; the light-emitting substrate 200 is disposed on one side of the array substrate 100; the cover plate 300 is disposed on the side of the light-emitting substrate 200 away from the array substrate 100; the flexible circuit board 400 is electrically connected to the array substrate 100 and is electrically connected to the first connection terminals 110; the driving circuit board 500 is electrically connected to the flexible circuit board 400; the touch layer 600 is disposed on the surface of the cover plate 300 near the light-emitting substrate 200, and the touch layer 600 near the array substrate 100 is provided with a plurality of second connection terminals 610, which are spaced apart; a plurality of side conductors 700 are spaced apart, and each side conductor 700 is electrically connected to each first connection terminal 110 and each second connection terminal 610, wherein the side conductor 700 is located on one side of the first connection terminal 110 and the second connection terminal 610.

[0036] refer to Figure 1A conventional touch display device includes an array substrate 10, a touch layer 20, a first flexible circuit board 30, a second flexible circuit board 40, and a driving circuit board. The array substrate 10 is electrically connected to the driving circuit board through the first flexible circuit board 30, and the touch layer 20 is electrically connected to the driving circuit board through the second flexible circuit board 40. Since the first flexible circuit board 30 and the second flexible circuit board 40 of the touch display device are located on different planes and require two flexible circuit board bonding processes, the bonding of the first flexible circuit board 30, the second flexible circuit board 40, and the driving circuit board requires a larger space in the bezel area of ​​the touch display device, resulting in an increase in the width of the bottom bezel of the touch display device. Therefore, the technical solution of this application involves setting the array substrate 100 to have a plurality of first connection terminals 110, which are spaced apart; the flexible circuit board 400 is electrically connected to the array substrate 100 and to the first connection terminals 110; the touch layer 600 has a plurality of second connection terminals 610 on one surface near the array substrate 100, which are spaced apart; and a plurality of side conductors 700 are spaced apart, each side conductor 700 being connected to each of the first connection terminals. 110 and each of the second connection terminals 610 are electrically connected, wherein the side conductor 700 is located on one side of the first connection terminal 110 and the second connection terminal 610. That is, a flexible circuit board 400 is used to electrically connect the array substrate 100, the touch layer 600 and the driving circuit board 500 respectively to realize signal transmission. Compared with the conventional solution, it is not necessary to use two flexible circuit boards to bind the driving circuit board 500 to the touch layer 600 and the array substrate 100 respectively, saving and reducing the space occupied by the bottom bezel, thereby reducing the width of the bottom bezel of the touch display device.

[0037] In this embodiment, the driving circuit board 500 is used to perform display driving control on the touch display device.

[0038] In this embodiment, the touch layer 600 is electrically connected to the driving circuit board 500 through the second connection terminal 610, the side wire 700, the first connection terminal 110, and the flexible circuit board 400, so as to realize the touch function under the control of the driving circuit board 500.

[0039] In this embodiment, reference Figure 2The touch display device includes a display area AA and a non-display area NA surrounding the display area AA. The non-display area NA includes a lower border area NA1 and an upper border area NA2 opposite to the lower border area NA1. A plurality of first connection terminals 110 and a plurality of second connection terminals 610 are located in the upper border area NA2. In a top view of the touch display device, a portion of each second connection terminal 610 overlaps with each first connection terminal 110. By setting a plurality of first connection terminals 110 and a plurality of second connection terminals 610 in the upper border area NA2, and in a top view of the touch display device, a portion of each second connection terminal 610 overlaps with each first connection terminal 110, the thickness of the touch display device can be reduced compared to a conventional touch display device that places the second flexible circuit board 400 between the touch layer 600 and the cover plate 300.

[0040] In this embodiment, the width of the upper border area NA2 is 0.2mm-0.5mm. Preferably, the width of the upper border area NA2 is 0.2mm, 0.22mm, 0.24mm, 0.26mm, 0.28mm, 0.3mm, 0.32mm, 0.34mm, 0.36mm, 0.38mm, 0.4mm, 0.42mm, 0.44mm, 0.46mm, 0.48mm, or 0.5mm.

[0041] In this embodiment, reference Figures 2-4 The non-display area NA also includes a side bezel area NA3. The array substrate 100 is provided with a third connection terminal 120, and multiple third connection terminals 120 are spaced apart and located in the side bezel area NA3. The flexible circuit board 400 is electrically connected to the first connection terminal 110 through the third connection terminal 120. By providing the array substrate 100 with the third connection terminal 120, the multiple first connection terminals 110 being spaced apart, and the multiple third connection terminals 120 being located in the side bezel area NA3, and the flexible circuit board 400 being electrically connected to the first connection terminal 110 through the third connection terminal 120, the electrical connection between the flexible circuit board 400 and the first connection terminal 110 can be easily achieved.

[0042] In this embodiment, the side border area NA3 is either the left border area or the right border area.

[0043] In this embodiment, the touch layer 600 is electrically connected to the driving circuit board 500 via the second connection terminal 610, the side wire 700, the first connection terminal 110, the third connection terminal 120, and the flexible circuit board 400, so as to realize the touch function under the control of the driving circuit board 500.

[0044] In this embodiment, reference Figure 3 The third connection terminal 120 is electrically connected to the first connection terminal 110 via the signal connection line 1100.

[0045] In this embodiment, reference Figure 2 At least a portion of the side conductor 700 covers the side of the first connection terminal 110 and the side of the second connection terminal 610. By providing at least a portion of the side conductor 700 to cover the side of the first connection terminal 110 and the side of the second connection terminal 610, the side conductor 700 has a sufficiently large contact area with the first connection terminal 110 and the second connection terminal 610, thereby improving the stability of signal transmission between the touch layer 600 and the array substrate 100.

[0046] In this embodiment, reference Figure 2 The side conductor 700 extends toward the array substrate 100, and the surface of the side conductor 700 away from the cover plate 300 is not lower than the surface of the array substrate 100 away from the cover plate 300. The side conductor 700 also extends toward the cover plate 300, and the surface of the side conductor 700 away from the array substrate 100 is not higher than the surface of the cover plate 300 away from the array substrate 100. By setting the side conductor 700 to extend toward the array substrate 100, and ensuring that the surface of the side conductor 700 away from the cover plate 300 is not lower than the surface of the array substrate 100 away from the cover plate 300, and the side conductor 700 also extends toward the cover plate 300, and the surface of the side conductor 700 away from the array substrate 100 is not higher than the surface of the cover plate 300 away from the array substrate 100, on the one hand, the side conductor 700 has a sufficiently large contact area with the first connection terminal 110 and the second connection terminal 610, thereby improving the stability of signal transmission between the touch layer 600 and the array substrate 100; on the other hand, it avoids the side conductor 700 being too small, making it difficult to manufacture, thereby reducing the manufacturing difficulty of the touch display device.

[0047] In this embodiment, the side conductor 700 extends toward the array substrate 100, and the surface of the side conductor 700 away from the cover plate 300 is flush with the surface of the array substrate 100 away from the cover plate 300. The side conductor 700 also extends toward the cover plate 300, and the surface of the side conductor 700 away from the array substrate 100 is flush with the surface of the cover plate 300 away from the array substrate 100.

[0048] In this embodiment, reference Figures 2-5 The width a1 of the first connecting terminal 110 is 0.2mm-1mm, the width a2 of the second connecting terminal 610 is 0.2mm-1mm, and the width a3 of the side conductor 700 is 0.2mm-1mm. By setting the width a1 of the first connecting terminal 110 to 0.2mm-1mm, the width a2 of the second connecting terminal 610 to 0.2mm-1mm, and the width a3 of the side conductor 700 to 0.2mm-1mm, it avoids the impedance from being too high due to an excessively small overlap area between the side conductor 700 and the first connecting terminal 110 and the second connecting terminal 610. It also avoids the wiring layout from being unacceptable due to excessively large widths of the first connecting terminal 110, the second connecting terminal 610, and the side conductor 700. Preferably, the width a1 of the first connecting terminal 110 is 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, or 1mm, and the width a2 of the second connecting terminal 610 is 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, or 1mm. The width a3 of the side conductor 700 is 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, or 1mm.

[0049] In this embodiment, reference Figures 2-5The first spacing d1 between two adjacent first connecting terminals 110 is 0.2mm-1mm, the second spacing d2 between two adjacent second connecting terminals 610 is 0.2mm-1mm, and the third spacing d3 between two adjacent side conductors 700 is 0.2mm-1mm. By setting the first spacing d1 between two adjacent first connecting terminals 110 to 0.2mm-1mm, the second spacing d2 between two adjacent second connecting terminals 610 to 0.2mm-1mm, and the third spacing d3 between two adjacent side conductors 700 to 0.2mm-1mm, it can avoid the impedance being too high due to the small overlap area between the side conductors 700 and the first connecting terminals 110 and the second connecting terminals 610, and also avoid the wiring layout being unable to meet the requirements due to the excessive width of the first connecting terminals 110, the second connecting terminals 610, and the side conductors 700. Preferably, the first spacing d1 is 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm or 1mm, and the second spacing d2 is 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0. The third spacing d3 is 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, or 1mm.

[0050] In this embodiment, reference Figure 2 The thickness h of the side conductor 700 is 10µm to 30µm. By setting the thickness h of the side conductor 700 to 10µm to 30µm, on the one hand, excessive resistance of the side conductor 700 is avoided, and on the other hand, sufficient adhesion of the side conductor 700 is ensured, reducing the risk of the side conductor 700 falling off. Preferably, the thickness h of the side conductor 700 is 1µm, 2µm, 3µm, 4µm, 5µm, 6µm, 7µm, 8µm, 9µm, 10µm, 11µm, 12µm, 13µm, 14µm, 15µm, 16µm, 17µm, 18µm, 19µm, 20µm, 21µm, 22µm, 23µm, 24µm, 25µm, 26µm, 27µm, 28µm, 29µm, or 30µm.

[0051] In this embodiment, reference Figure 2 A fourth spacing d4 is provided between the first connecting terminal 110 and the second connecting terminal 610, and the fourth spacing d4 is not greater than 5 μm. By providing a fourth spacing d4 between the first connecting terminal 110 and the second connecting terminal 610, and the fourth spacing d4 being no greater than 5 μm, it is possible to avoid the side wire 700 from breaking due to an excessively large distance between the first connecting terminal 110 and the second connecting terminal 610. Preferably, the fourth spacing d4 is 1 μm, 1.2 μm, 1.4 μm, 1.6 μm, 1.8 μm, 2.0 μm, 2.2 μm, 2.4 μm, 2.6 μm, 2.8 μm, 3.0 μm, 3.2 μm, 3.4 μm, 3.6 μm, 3.8 μm, 4.0 μm, 4.2 μm, 4.4 μm, 4.6 μm, 4.8 μm, or 5.0 μm.

[0052] In this embodiment, the material of the touch layer is indium tin oxide.

[0053] In this embodiment, the material of the side conductor 700 is silver.

[0054] In this embodiment, reference Figure 2 The touch display device further includes a polarizing layer 800, which is disposed on the side of the cover plate 300 away from the array substrate 100. By disposing of the polarizing layer 800 on the side of the cover plate 300 away from the array substrate 100, rather than disposing of the polarizing layer 800 on the side of the cover plate 300 close to the array substrate 100, interference of the polarizing layer 800 with the fabrication of the second connection terminal 610 can be avoided, reducing the manufacturing difficulty of the touch display device.

[0055] In this embodiment, reference Figure 2 The touch display device further includes anisotropic conductive adhesive 1000, which is located between the touch layer 600 and the array substrate 100.

[0056] In this embodiment, reference Figure 2 The touch display device further includes a heat dissipation layer 900, which is disposed on a surface of the array substrate 100 away from the cover plate 300.

[0057] The specific embodiments of this application have been described in detail above. The embodiments disclosed above are merely preferred embodiments of this application. Those skilled in the art can make many modifications and improvements without departing from the concept of this application. All such modifications and improvements fall within the scope of protection defined by the claims of this application.

Claims

1. A touch display device, characterized in that, include: An array substrate, wherein the array substrate is provided with a plurality of first connection terminals, the plurality of first connection terminals being spaced apart; A light-emitting substrate, wherein the light-emitting substrate is disposed on one side of the array substrate; A cover plate is disposed on the side of the light-emitting substrate away from the array substrate; A flexible circuit board, wherein the flexible circuit board is electrically connected to the array substrate and is also electrically connected to the first connection terminal; A driving circuit board, which is electrically connected to the flexible circuit board; A touch layer is disposed on a surface of the cover plate near the light-emitting substrate. The surface of the touch layer near the array substrate is provided with a plurality of second connection terminals, which are spaced apart. Multiple side conductors are spaced apart, and each side conductor is electrically connected to each of the first connection terminal and each of the second connection terminals, wherein the side conductor is located on one side of the first connection terminal and the second connection terminal.

2. The touch display device according to claim 1, characterized in that, The touch display device includes a display area and a non-display area surrounding the display area. The non-display area includes a lower border area and an upper border area opposite to the lower border area. A plurality of first connection terminals and a plurality of second connection terminals are located in the upper border area. In a top view of the touch display device, a portion of each second connection terminal overlaps with each first connection terminal.

3. The touch display device according to claim 2, characterized in that, The non-display area also includes a side bezel area. The array substrate is provided with a third connection terminal. Multiple third connection terminals are spaced apart and located in the side bezel area. The flexible circuit board is electrically connected to the first connection terminal through the third connection terminal.

4. The touch display device according to any one of claims 1-3, characterized in that, At least a portion of the side conductor covers the side of the first connection terminal and the side of the second connection terminal.

5. The touch display device according to claim 4, characterized in that, The side conductor extends toward the array substrate, and the surface of the side conductor away from the cover plate is not lower than the surface of the array substrate away from the cover plate. The side conductor also extends toward the cover plate, and the surface of the side conductor away from the array substrate is not higher than the surface of the cover plate away from the array substrate.

6. The touch display device according to claim 1, characterized in that, The width of the first connecting terminal is 0.2mm-1mm, the width of the second connecting terminal is 0.2mm-1mm, and the width of the side conductor is 0.2mm-1mm.

7. The touch display device according to claim 1, characterized in that, The first spacing between two adjacent first connecting terminals is 0.2mm-1mm, the second spacing between two adjacent second connecting terminals is 0.2mm-1mm, and the third spacing between two adjacent side conductors is 0.2mm-1mm.

8. The touch display device according to claim 1, characterized in that, The thickness of the side conductor is 10um to 30um.

9. The touch display device according to claim 1, characterized in that, There is a fourth gap between the first connection terminal and the second connection terminal, and the fourth gap is not greater than 5 μm.

10. The touch display device according to claim 1, characterized in that, The touch layer is made of indium tin oxide.

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