A touch display device

Abstract

The present invention discloses a touch display device. The touch display device has a display area and a non-display area at least arranged at one end of the display area, and the touch display device includes: a first flexible circuit board connected to the non-display area; a touch unit arranged on one side of the first flexible circuit board, for receiving and processing a first touch signal of the non-display area; a plurality of signal connection springs arranged between the first flexible circuit board and the touch unit, and the signal connection springs transmit the first touch signal received by the first flexible circuit board to the touch unit. The cost of the flexible circuit board (FPC) used between the touch display device and the corresponding touch unit is low, and the assembly is also relatively convenient, thereby reducing the production cost of the touch display device.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a touch display device. Background Art

[0002] With the development of human-computer interaction technology, touch technology is increasingly used in various displays. Capacitive touch technology is widely used due to its wear resistance, long life, low maintenance cost when used by users, and support for gesture recognition and multi-touch.

[0003] Touch display panels usually use incell technology or oncell technology. No matter which technology is used, if you need to add a touch function to the area outside the display area (non-display area) of the touch display panel, you generally need to use a flexible printed circuit (FPC) to transmit touch signals to achieve the touch function. In order to achieve the transmission of touch signals, currently, the flexible printed circuit (FPC) usually uses a board-to-board (BTB) connector to connect and conduct with the corresponding touch unit, such as Figure 3 As shown, the flexible circuit board 100 is electrically connected to other devices (such as a touch control unit) through a board-to-board (BTB) connector 200. Alternatively, the flexible circuit board (FPC) can also be connected to the corresponding touch control unit using a zero insertion force (ZIF) connector, such as Figure 4 As shown, the flexible circuit board 100 is electrically connected to other devices (such as a touch control unit) through a zero insertion force (ZIF) connector 300. However, the use of these two connectors is relatively costly and the assembly is also relatively complicated, so it is necessary to find a simpler connection method. Summary of the invention

[0004] In view of the defects in the prior art, the present invention aims to provide a touch display device in which the cost of the flexible printed circuit (FPC) used between the corresponding touch unit is low and the assembly is convenient, thereby reducing the production cost of the touch display device.

[0005] According to one aspect of the present invention, a touch display device is provided, the touch display device having a display area and a non-display area at least arranged at one end of the display area, the touch display device comprising: a first flexible circuit board connected to the non-display area; a touch unit arranged on one side of the first flexible circuit board, for receiving and processing a first touch signal of the non-display area; a plurality of signal connection springs arranged between the first flexible circuit board and the touch unit, the signal connection springs transmitting the first touch signal received by the first flexible circuit board to the touch unit.

[0006] Preferably, the first flexible circuit board includes a first electrical connection portion and a second electrical connection portion, the first electrical connection portion is electrically connected to the non-display area, and the signal connection spring is arranged at the second electrical connection portion.

[0007] Preferably, the signal connection spring is welded on the first flexible circuit board, and the signal connection spring is electrically connected to the first flexible circuit board and the touch control unit respectively.

[0008] Preferably, the touch display device comprises a cover plate and a display module, and the display module is arranged on one side of the cover plate, corresponding to a display area of ​​the cover plate.

[0009] Preferably, the first flexible circuit board is arranged on the same side of the cover plate as the display module, corresponding to a non-display area of ​​the cover plate.

[0010] Preferably, the touch display device further includes a second flexible circuit board and a driving unit, wherein the second flexible circuit board connects the display area of ​​the cover plate and the driving unit.

[0011] Preferably, the display module is a liquid crystal display module or an organic light emitting display module.

[0012] Preferably, the touch display device further comprises a front shell for accommodating the display module, and the first flexible circuit board is disposed on the front shell.

[0013] Preferably, the first flexible circuit board further includes a bending portion, and the first flexible circuit board passes through the front shell through the bending portion and extends from outside the front shell to inside the front shell.

[0014] Preferably, the wiring of the first flexible circuit board extending into the front shell passes under the display module.

[0015] The touch display device of the embodiment of the present invention is connected to its non-display area through a first flexible circuit board, and the first flexible circuit board also uses multiple signal connection springs to connect a separate touch unit, and the touch unit receives a first touch signal generated by the non-display area and processes the first touch signal. Therefore, compared with the existing touch display device using a board-to-board connector or a zero insertion force connector, the connection cost is lower, and the first flexible circuit board can be directly assembled on the front shell of the touch display device, and the assembly method is relatively simple. Therefore, it can realize touch operation in the non-display area while effectively reducing the manufacturing cost of the entire touch display device and simplifying the manufacturing process of the touch display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 A front view of a touch display device according to an embodiment of the present invention;

[0018] Figure 2 is a schematic cross-sectional view of a touch display device according to an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of the structure of a flexible circuit board connected to corresponding components in the prior art; and

[0020] Figure 4 The present invention is a schematic diagram of the structure of another flexible printed circuit board connected with corresponding components in the prior art.

[0021] Reference numerals

[0022] 1 Cover

[0023] 11 Display area

[0024] 12 Non-display area

[0025] 2. The first flexible circuit board

[0026] 21 first electrical connection portion

[0027] 22 Second electrical connection portion

[0028] 3 Signal connection spring

[0029] 4 Touch units

[0030] 5 Display module

[0031] 100 Flexible Circuit Board

[0032] 200 Board-to-Board Connectors

[0033] 300 Zero Insertion Force Connectors DETAILED DESCRIPTION

[0034] The technical content of the present invention is further described below in conjunction with the drawings and embodiments.

[0035] Please also see Figure 1 and Figure 2, which respectively shows a front view and a cross-sectional structural schematic diagram of a touch display panel of an embodiment of the present invention. In order to clearly show the first flexible circuit board of the touch display panel, other components of the touch display panel are omitted. In a preferred embodiment of the present invention, the touch display panel has a display area 11 and a non-display area 12 at least arranged at one end of the display area 11, and the touch display panel includes: a first flexible circuit board 2, a touch unit 4 and a plurality of signal connection springs 3.

[0036] exist Figure 1 In the embodiment shown, the touch display panel has a display area 11 and a non-display area 12 arranged at one end of the display area 11. Specifically, the touch display panel includes a cover plate 1 and a display module 5. The display module 5 is arranged on one side of the cover plate 1 ( Figure 2 The display area 11 of the cover plate 1 is used for light-emitting display, that is, the display area 11 of the cover plate 1 is the display area of ​​the touch display panel. Correspondingly, the area without the display module 5 is the non-display area 12 of the cover plate 1, that is, the non-display area of ​​the touch display panel. The display module 5 can be a liquid crystal display module or an organic light-emitting display module, for example, including a thin film transistor drive layer, a pixel electrode layer, a counter electrode layer, etc.

[0037] The first flexible circuit board 2 is connected to the non-display area. Figure 2 As shown, the first flexible circuit board 2 is arranged on the same side of the cover plate 1 as the display module 5 ( Figure 2 The first flexible circuit board 2 includes a first electrical connection portion 21 and a second electrical connection portion 22. The first electrical connection portion 21 is electrically connected to the non-display area 12 of the cover plate 1. More specifically, the non-display area 12 of the cover plate 1 may be provided with a plurality of touch electrodes, and the first electrical connection portion 21 of the first flexible circuit board 2 is electrically connected to the plurality of touch electrodes of the non-display area 12 of the cover plate 1. These touch electrodes sense the touch operation performed by the user in the non-display area 12 of the cover plate 1 to generate a first touch signal (for example, by sensing the change of capacitance, etc.), and transmit the first touch signal to the first electrical connection portion 21 of the first flexible circuit board 2, which is then transmitted to the touch unit 4 of the touch display panel by the first flexible circuit board 2.

[0038] The touch control unit 4 is disposed on one side of the first flexible circuit board 2, and is used to receive and process the first touch control signal generated in the non-display area. Figure 2 In the illustrated embodiment, the touch unit 4 is disposed below the second electrical connection portion 22 of the first flexible circuit board 2 and is electrically connected to the second electrical connection portion 22 .

[0039] A plurality of signal connection springs 3 are disposed between the first flexible circuit board 2 and the touch control unit 4, and are electrically connected to the first flexible circuit board 2 and the touch control unit 4 respectively. The signal connection springs 3 transmit the first touch signal received by the first flexible circuit board 2 to the touch control unit 4. Specifically, Figure 2 In the illustrated embodiment, the number of the signal connection springs 3 is three, but the present invention is not limited thereto. The three signal connection springs 3 are disposed on the second electrical connection portion 22 of the first flexible circuit board 2. Figure 2 In the preferred embodiment shown, the signal connection spring 3 is a metal sheet that can realize signal transmission, and the signal connection spring 3 is welded below the second electrical connection portion 22 of the first flexible circuit board 2. The first flexible circuit board 2 transmits the first touch signal to the touch control unit 4 through the feeding conduction between its second electrical connection portion 22 and the signal connection spring 3, and the touch control unit 4 processes the first touch signal, thereby realizing the separate control of the non-display area of ​​the touch display panel.

[0040] Further, in an optional embodiment of the present invention, the touch display panel also includes a second flexible circuit board and a driving unit (not shown in the figure). The second flexible circuit board is respectively connected to the display area 11 of the cover plate 1 and the driving unit. The second flexible circuit board is used to receive the display signal and the second touch signal generated by the display area 11. Among them, the second touch signal refers to the signal generated by the touch operation performed by the user in the display area 11 of the cover plate 1. In an embodiment of the present invention, the first flexible circuit board 2 and the second flexible circuit board are not connected, and the two transmit the touch signals generated by the display area and non-display area of ​​the touch display panel respectively.

[0041] Furthermore, the touch display panel further comprises a front shell for accommodating the display module 5. The first flexible circuit board 2 is disposed on the front shell. Figure 2 In the illustrated embodiment, the first flexible circuit board 2 further includes a bent portion. The bent portion is a portion bent during the extension of the second electrical connection portion 22 of the first flexible circuit board 2 toward the bottom of the display module 5. The first flexible circuit board 2 passes through the front shell of the touch display panel through the bent portion and extends from the outside of the front shell to the inside of the front shell, and the wiring of the portion of the first flexible circuit board extending into the front shell passes below the display module 5.

[0042] Furthermore, based on the above embodiments, the present invention also provides a touch display device, which includes the touch display panel provided in the above embodiments. The touch display device of the present invention can be a mobile phone, a tablet computer, an e-book, and other devices. Since the touch display device includes the above touch display panel, compared with the existing touch display device, it can also realize touch operation in the non-display area while reducing the corresponding manufacturing cost and simplifying the manufacturing process.

[0043] To sum up, the touch display panel of the embodiment of the present invention is connected to its non-display area through the first flexible circuit board, and the first flexible circuit board also uses multiple signal connection springs to connect a separate touch unit, and the touch unit receives the first touch signal generated in the non-display area and processes the first touch signal. Therefore, compared with the existing touch display panel using a board-to-board connector or a zero insertion force connector, the connection cost is lower, and the first flexible circuit board can be directly assembled on the front shell of the touch display panel, and the assembly method is relatively simple. Therefore, it can realize touch operation in the non-display area while effectively reducing the manufacturing cost of the entire touch display panel and simplifying the manufacturing process of the touch display panel.

[0044] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art of the present invention may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A touch display device, characterized in that: The touch display device has a display area and a non-display area at least arranged at one end of the display area, and the touch display device includes: A first flexible circuit board connected to the non-display area; A touch unit, disposed on one side of the first flexible circuit board, for receiving and processing a first touch signal of the non-display area; A plurality of signal connection springs are arranged between the first flexible circuit board and the touch control unit, and the signal connection springs transmit the first touch control signal received by the first flexible circuit board to the touch control unit; The touch display device comprises a cover plate and a display module, wherein the display module is arranged on one side of the cover plate, corresponding to the display area of ​​the cover plate, and the first flexible circuit board is arranged on the same side of the cover plate as the display module, corresponding to the non-display area of ​​the cover plate; The touch display device further includes a second flexible circuit board and a driving unit, wherein the second flexible circuit board connects the display area of ​​the cover plate and the driving unit; the second flexible circuit board is used to receive a second touch signal of the display area; The first flexible circuit board includes a first electrical connection portion and a second electrical connection portion, the first electrical connection portion is electrically connected to the non-display area of ​​the cover plate, and the signal connection spring is arranged at the second electrical connection portion; The touch display device further comprises a front shell for accommodating the display module, and the first flexible circuit board is arranged on the front shell; The first flexible circuit board also includes a bending portion, which is a portion bent during the process of extending along the second electrical connection portion of the first flexible circuit board toward the bottom of the display module. The first flexible circuit board passes through the front shell through the bending portion and extends from outside the front shell to inside the front shell.

2. The touch display device according to claim 1, characterized in that: The signal connection springs are welded on the first flexible circuit board, and the signal connection springs are electrically connected to the first flexible circuit board and the touch control unit respectively.

3. The touch display device according to claim 1, characterized in that: The display module is a liquid crystal display module or an organic light emitting display module.

4. The touch display device according to claim 1, characterized in that: The wiring of the first flexible circuit board extending into the front shell passes under the display module.

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