Composite touch module

Abstract

A composite touch control module is arranged in a frame of a display and is provided with a circuit board with a laminated structure, a first touch control sensor and a second touch control sensor with different functions are arranged in different circuit layers, and the first touch control sensor faces the front face of the display and the second touch control sensor is close to the bottom face of the display. If the touch sensors with different functions are touched and operated by the user from the front surface and the bottom surface respectively, and the auxiliary sensing component is arranged to judge that the user approaches from the front surface or the bottom surface, so that the first touch sensor or the second touch sensor at the corresponding position is triggered; therefore, two groups of touch sensors can be arranged in a limited area, and the trigger position of the user can be automatically detected, so that the user can perform intuitive operation without additional steps.

Description

Technical Field

[0001] The present invention relates to a composite touch module, in particular to a touch module with multiple touch functions. Background Art

[0002] With the advancement of technology, the application of touch sensing is becoming more and more extensive. In the prior art, there are applications that use touch sensing as control buttons on the border of the display to replace physical buttons. As for the control buttons on the border of the display, basic control buttons are generally required, such as volume control, multimedia function switching, etc. More advanced and less commonly used control buttons may include input signal switching, etc., but different control buttons require corresponding touch units to be set. In the trend of pursuing narrow borders, how to set the required number of touch sensing buttons on the border of the display with a limited area has become the research and development direction of this field. Summary of the invention

[0003] In view of this, the present invention proposes a composite touch module, so as to provide two sets of touch sensing buttons within a limited area.

[0004] In order to achieve the above-mentioned purpose of the invention, the technical means adopted by the present invention is to provide a composite touch module, which includes:

[0005] A circuit board having a first surface and a first side edge, wherein the first surface is adjacent to the first side edge, and the circuit board comprises a stacked multilayer structure, wherein the stacked multilayer structure comprises a first circuit layer and a second circuit layer, wherein the first circuit layer constitutes the first surface, and the second circuit layer is stacked below the first circuit layer;

[0006] a control unit, which is disposed on the circuit board;

[0007] A plurality of first touch sensors, which are arranged on the first circuit layer and are electrically connected to the control unit;

[0008] a plurality of second touch sensors disposed on the second circuit layer and electrically connected to the control unit, the second touch sensors being close to or flush with the first side edge; and

[0009] An auxiliary sensing component, which is disposed on the first circuit layer and is electrically connected to the control unit;

[0010] The first touch sensor, the second touch sensor and the auxiliary sensing unit generate sensing quantities corresponding to the approach of a touch object;

[0011] When at least part of the first touch sensor and at least part of the second touch sensor detect sensing quantities, the control unit determines whether the sensing quantities received by the auxiliary sensing component meet a first condition; if so, the control unit executes the function corresponding to the first touch sensor; if not, the control unit executes the function corresponding to the second touch sensor.

[0012] The advantage of the present invention is that different groups of touch sensors are arranged by a multi-layer structure, and the adjacent first surface and first side edge of the three-dimensional structure of the circuit board are utilized to allow the user to control different groups of touch sensors when touching the first surface and the first side edge, and cooperate with the auxiliary sensing component to automatically determine the position currently approached or touched by the user, thereby triggering the function of the group of touch sensors at the corresponding position. Therefore, the effect of setting two groups of touch sensing buttons in a limited area can be achieved, and through the automatic judgment of the auxiliary sensing component, the user does not need to perform additional switching procedures, and can intuitively operate different groups of touch sensors.

[0013] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a block diagram of the present invention;

[0015] Figure 2 is a schematic top view of a first circuit layer according to a first embodiment of the present invention;

[0016] Figure 3 For along Figure 2 A schematic side cross-sectional view of the cutting line 3-3;

[0017] Figure 4 For along Figure 2 A side cross-sectional schematic diagram of the cutting line 4-4;

[0018] Figure 5 is a schematic top view of the second circuit layer of the present invention;

[0019] Figure 6 A front view schematic diagram of a display device provided with the present invention;

[0020] Figure 7 is a bottom schematic diagram of a display device according to the present invention;

[0021] Figure 8 is a schematic top view of a first circuit layer according to a second embodiment of the present invention;

[0022] Fig.9A for Figure 6 An enlarged schematic diagram of the lower left corner of the display in the first state;

[0023] Fig. 9B for Figure 6 An enlarged schematic diagram of the lower left corner of the display in the second state.

[0024] Wherein, the reference numerals are:

[0025] 10: Circuit Board

[0026] 101: First surface

[0027] 102: first side edge

[0028] 103: Second side edge

[0029] 11: First circuit layer

[0030] 12: Second circuit layer

[0031] 13: The third circuit layer

[0032] 14: The fourth circuit layer

[0033] 20: Control unit

[0034] 30: First touch sensor

[0035] 40: Second touch sensor

[0036] 50, 50A: Auxiliary sensing components

[0037] 51, 51A: First auxiliary sensor

[0038] 52A: Second auxiliary sensor

[0039] 60: first light emitting element

[0040] 61: First pattern group

[0041] 70: Second light emitting element

[0042] 71: Second pattern group

[0043] 80: Display

[0044] 81: Border

[0045] 82: Positive

[0046] 83: Bottom

[0047] 84: Connection port DETAILED DESCRIPTION

[0048] The structural principle and working principle of the present invention are described in detail below in conjunction with the accompanying drawings:

[0049] The following is a combination of drawings and embodiments of the present invention to further explain the technical means adopted by the present invention to achieve the predetermined invention purpose, wherein the drawings have been simplified for illustrative purposes only, and the structure or method invention of the present invention is explained by describing the relationship between the elements and components of the present invention. Therefore, the elements shown in the drawings are not presented in actual quantity, actual shape, actual size and actual proportion, and the size or size proportion has been enlarged or simplified to provide a better description. The actual quantity, actual shape or actual size proportion has been selectively designed and configured, and the detailed element layout may be more complicated.

[0050] See also Figures 1 to 3 As shown, the present invention includes a circuit board 10, a control unit 20, a plurality of first touch sensors 30, a plurality of second touch sensors 40, and an auxiliary sensing component 50, and may further include a first light emitting element 60 and a second light emitting element 70. The first touch sensor 30, the second touch sensor 40, the auxiliary sensing component 50, the first light emitting element 60 and the second light emitting element 70 are electrically connected to the control unit 20. In one embodiment, the first touch sensor 30, the second touch sensor 40 and the auxiliary sensing component 50 detect the touch object by capacitive sensing, that is, when the touch object approaches or contacts, the first touch sensor 30, the second touch sensor 40 and the auxiliary sensing component 50 will generate corresponding capacitive sensing amount due to the distance between the touch object and them.

[0051] See also Figure 2 and 3 As shown, the circuit board 10 has a first surface 101 and a first side edge 102, wherein the first surface 101 is adjacent to the first side edge 102, and the circuit board 10 comprises a multilayer structure stacked in layers, wherein at least a first circuit layer 11, a second circuit layer 12, and a third circuit layer 13 are included, wherein the second circuit layer 12 is located between the first circuit layer 11 and the third circuit layer 13, and the first circuit layer 11 constitutes the first surface 101. The circuit board 10 may further comprise a fourth circuit layer 14 located between the second circuit layer 12 and the third circuit layer 13, wherein the fourth circuit layer 14 may be used for routing or setting a shielding layer. A dielectric layer is provided between the first, second, third, and fourth circuit layers 11, 12, 13, and 14, respectively. In one embodiment, please refer to Figures 3 to 5 As shown, the control unit 20 is disposed on the third circuit layer 13 , the first touch sensor 30 and the auxiliary sensing component 50 are disposed on the first circuit layer 11 , the second touch sensor 40 is disposed on the second circuit layer 12 , and the second touch sensor 40 is close to or flush with the first side edge 102 .

[0052] When applying this invention, please refer to Figure 6 and Figure 7 Cooperate Figure 1 , Figure 2 and Figure 5 As shown, the circuit board 10 is installed in a frame 81 of a display 80, the first surface 101 of the circuit board 10 corresponds to the front surface 82 of the display 80, and the first side edge 102 of the circuit board 10 corresponds to the bottom surface 83 of the display 80. A touch object 90 controls the first touch sensor 30 from the front surface 82 of the display 80 (corresponding to the first surface 101 of the circuit board 10), and actuates different functions by touching different first touch sensors 30. The touch object 90 controls the second touch sensor 40 from the bottom surface 83 of the display 80 (corresponding to the first side edge 102 of the circuit board 10), and actuates different functions by touching different second touch sensors 40. The auxiliary sensing component 50 is used to assist in determining whether the touch object 90 (such as the user's finger) is approaching the front surface 82 or the bottom surface 83 of the display 80, and further determine whether the function the user wants to trigger is the function corresponding to the first touch sensor 30 or the function corresponding to the second touch sensor 40.

[0053] When the touch object 90 approaches the front side 82 of the display 80, although the first touch sensor 30 and the second touch sensor 40 can both generate changes in sensing, the touch object 90 can also cause the auxiliary sensing component 50 located on the first surface 101 to generate changes in sensing, so that the sensing of the auxiliary sensing component 50 satisfies a first condition (for example, greater than a first threshold value), thereby allowing the control unit 20 to determine that the touch object 90 is intended to trigger the function of the first touch sensor 30, and then determine which first touch sensor 30 the position contacted by the touch object 90 corresponds to according to the sensing of each first touch sensor 30, and then activate the function of the first touch sensor 30, for example, using the first touch sensor 30 with the largest sensing, determine that the position to be contacted by the touch object 90 is the first touch sensor 30, and execute the function of the first touch sensor 30 with the largest sensing. Corresponding function; when the touch object 90 is about to contact the bottom surface 83 of the display 80, although the first touch sensor 30 and the second touch sensor 40 can both generate changes in sensing, the touch object 90 is far away from the auxiliary sensing component 50 located on the first surface 10 at this time, and the auxiliary sensing component 50 cannot generate changes in sensing or the generated sensing cannot meet the first condition, then the control unit 20 determines that the touch object 90 is about to trigger the function of the second touch sensor 40, and then determines which second touch sensor 40 the position contacted by the touch object 90 corresponds to according to the sensing of each of the second touch sensors 40, and then activates the function of the second touch sensor 40, for example, using the second touch sensor 40 with the largest sensing, determines that the position to be contacted by the touch object 90 is the second touch sensor 40, and executes the function corresponding to the second touch sensor 40 with the largest sensing.

[0054] Therefore, the present invention can be provided with at least two groups of the touch sensors 30, 40 on the stacked circuit board 10, and utilize the three-dimensional structure (front surface 82 and bottom surface 83) of the display 80, and cooperate with the first and second touch sensors 30, 40 to be arranged at different positions (first surface 101 and near the first side edge) to allow the user to control different touch buttons from different directions, and use the auxiliary sensing component 50 to identify the position approached by the user, and then activate the corresponding first touch sensor 30 or the second touch sensor 40 according to the position touched by the user. Therefore, the present invention can arrange two groups of the first and second touch sensors 30, 40 with different functions in a limited frame 81 area. Furthermore, the corresponding first touch sensor 30 or the second touch sensor 40 can be automatically activated by the judgment of the auxiliary sensing component 50, and the user does not need to perform additional switching procedures, thereby maintaining convenience in use.

[0055] In one embodiment (such as Figure 2 As shown in FIG. 1 , the circuit board 10 has a second side edge 103, and the second side edge 103 and the first side edge 102 are arranged on opposite sides and are both adjacent to the first surface 101. The auxiliary sensing component 50 includes a first auxiliary sensor 51, and the first auxiliary sensor 51 is arranged at a position close to the second side edge 103 and away from the first side edge 102. The sensing amount generated by the first auxiliary sensor 51 can be compared with a preset first threshold value. When the touch object 90 approaches from the front side 82 of the display 80, since the first auxiliary sensor 51 is arranged on the first circuit layer 11 of the circuit board 10 (i.e., constituting the first surface 101), the sensing amount generated by the first auxiliary sensor 51 is greater than the first threshold value. To satisfy the first condition, the control unit 20 executes the function of the first touch sensor 30; when the touch object 90 approaches from the bottom surface 83 of the display 80, that is, approaches from the first side edge 102, it is more difficult for the first auxiliary sensor 51 at a long distance to produce a change in the sensing amount, and the sensing amount generated by the first auxiliary sensor 51 will be less than the first threshold value and is deemed to not satisfy the first condition, so the control unit 20 executes the function of the second touch sensor 40. Therefore, by setting the first auxiliary sensor 51 at a position close to the second side edge 103 and away from the first side edge 102 (corresponding to the bottom surface 83 of the display 80), the accuracy of judging whether the touch object 90 approaches from the front side 82 or the bottom side 83 is improved.

[0056] In another embodiment (such as Figure 8As shown in FIG. 1 , the auxiliary sensing component 50A includes not only the first auxiliary sensor 51A but also a second auxiliary sensor 52A. The first touch sensor 30 is located between the first auxiliary sensor 51A and the second auxiliary sensor 52A. The second auxiliary sensor 52A is disposed near the first side edge 102 and away from the second side edge 103. The first auxiliary sensor 51A and the second auxiliary sensor 52A may be in the shape of strips and are disposed parallel to the second side edge 103 and the first side edge 102, respectively, to increase the contactable area. The lengths of the first auxiliary sensor 51A and the second auxiliary sensor 52A may cover the distribution range of the first touch sensor 30. By combining the first and second auxiliary sensors 51A and 52A, the accuracy of determining whether the touch object 90 approaches from the front surface 82 or the bottom surface 83 is improved. When the touch object 90 approaches from the front side of the display 80, the sensing amounts of the first and second auxiliary sensors 51A and 52A will both change. At this time, the sensing amount of the first auxiliary sensor 51A can be regarded as being greater than the first threshold value, which satisfies the first condition, thereby triggering the function of the first auxiliary sensor 30. In addition, since the touch object 90 approaches from the front side 82 of the display 80, the distance between the touch object 90 and the first and second auxiliary sensors 51A and 52A, which are also located on the first surface 101, is not much different. The sensing amounts of the first and second auxiliary sensors 51A and 52A can also be compared. If the difference between the sensing amounts of the two is less than a second threshold value, which means that the difference between the sensing amounts of the two is not much, it is judged that the probability of the touch object 90 approaching from the front side is higher. Therefore, it is judged that the first condition is satisfied and the function of the first touch sensor 30 is triggered, which is also in line with the requirements. When the touch object 90 approaches from the bottom surface 83 of the display 80, that is, approaches from the first side edge 102, and is farther away from the first auxiliary sensor 51A located near the second side edge 103, the sensing amount of the first auxiliary sensor 51A is bound to be smaller and not greater than the first threshold value, and it is considered that the first condition is not met, so the control unit 20 executes the function of the second touch sensor 40. Since the touch object 90 approaches from the bottom surface 83 of the display 80 (corresponding to the first side edge 102 of the circuit board 10), it is closer to the second auxiliary sensor 52A close to the first side edge 102. Therefore, the sensing amount of the second auxiliary sensor 52A is bound to be greater than the sensing amount of the first auxiliary sensor 51A, and the difference between the sensing amounts of the two is greater than the preset second threshold value, and it is considered that the first condition is not met, so the control unit 20 executes the function of the second touch sensor 40. Therefore, by placing the first and second auxiliary sensors 52A close to the second side edge 103 and the first side edge 102 respectively, it is possible to more clearly determine whether the touch object 90 approaches the front surface 82 or the bottom surface 83 (corresponding to the first side edge 102 ) of the display 80 .

[0057] In one embodiment (such as Figure 3 As shown in the figure, each of the first touch sensors 30 corresponds to one of the second touch sensors 40, and each of the second touch sensors 40 corresponds to one of the first touch sensors 30, that is, the first touch sensors 30 and the second touch sensors 40 are arranged one-to-one, and the corresponding first touch sensors 30 and the second touch sensors 40 are electrically connected through the conductive through holes 111, and then the first touch sensor 30 or the second touch sensor 40 is electrically connected to the control unit 20 through wiring, so as to reduce the wiring electrically connected to the control unit 20, thereby reducing the number of pins used by the control unit 20, and the remaining pins can be used to connect other required electronic components. Although the sensing signals of the correspondingly connected first and second touch sensors 30, 40 will be transmitted to the control unit 20 together through this electrical connection, since only the first touch sensor 30 or the second touch sensor 40 will be selected to be triggered each time, and the first and second touch sensors 30, 40 will not be triggered at the same time, when the control unit 20 receives the sensing signals of each group of the first and second touch sensors 30, 40, it can determine whether the currently received sensing signal is intended to be used to trigger the first touch sensor 30 or the second touch sensor 40 according to the sensing result of the auxiliary sensing component 50.

[0058] See also Figure 1 and Figure 6 As shown, when the control unit 20 performs the function corresponding to the first touch sensor 30, the control unit 20 simultaneously brakes the first light emitting element 60 to make it emit light; when the control unit 20 performs the function corresponding to the second touch sensor 40, the control unit 20 simultaneously actuates the second light emitting element 70 to make it emit light. In one embodiment, please refer to Figure 1 and Fig.9A As shown, when the first light emitting element 60 emits light, a first pattern group 61 is presented on the frame 81 of the display 80. The patterns presented by the first pattern group 61 correspond to the functions of each of the first touch sensors 30, such as conference function, answering calls, volume control, etc.; please refer to Figure 1 , Fig. 9B and Figure 7As shown, when the second light emitting element 70 emits light, a second pattern group 71 is presented on the frame 81 of the display 80. The pattern presented by the second pattern group 71 corresponds to the function of each of the second touch sensors 40. For example, the display 80 has different connection ports 84 for connecting different audio and video input sources, and the second touch sensor 40 is used to switch which audio and video input source the image and sound to be displayed on the display 80 come from. The positions of the first pattern group 61 and the second pattern group 71 can be staggered, such as up and down or left and right, to correspond to the first light emitting element 60 and the second light emitting element 70 set at different positions.

[0059] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A composite touch module, characterized in that: include: A circuit board having a first surface and a first side edge, wherein the first surface is adjacent to the first side edge, and the circuit board comprises a stacked multilayer structure, wherein the stacked multilayer structure comprises a first circuit layer and a second circuit layer, wherein the first circuit layer constitutes the first surface, and the second circuit layer is stacked under the first circuit layer; a control unit, which is disposed on the circuit board; A plurality of first touch sensors, which are arranged on the first circuit layer and are electrically connected to the control unit; A plurality of second touch sensors, which are arranged on the second circuit layer and are electrically connected to the control unit, and the second touch sensors are close to or flush with the first side edge; and An auxiliary sensing component, which is disposed on the first circuit layer and is electrically connected to the control unit; The first touch sensor, the second touch sensor and the auxiliary sensing unit generate sensing quantities corresponding to the approach of a touch object; When at least part of the first touch sensor and at least part of the second touch sensor detect sensing quantities, the control unit determines whether the sensing quantities received by the auxiliary sensing component meet a first condition; if so, the control unit executes the function corresponding to the first touch sensor; if not, the control unit executes the function corresponding to the second touch sensor.

2. The composite touch module according to claim 1, wherein: in: The circuit board has a second side edge, and the first side edge and the second side edge are arranged on opposite sides and are both adjacent to the first surface; The auxiliary sensing component includes a first auxiliary sensor, and the first auxiliary sensor is arranged at a position close to the second side edge and away from the first side edge.

3. The composite touch module according to claim 2, wherein: The control unit determines whether the sensing amount received by the auxiliary sensing component satisfies a first condition, which refers to determining whether the sensing amount received by the first auxiliary sensor is greater than a first threshold value.

4. The composite touch module according to claim 2, wherein: The auxiliary sensing component further includes a second auxiliary sensor. The first touch sensor is disposed between the first auxiliary sensor and the second auxiliary sensor. The second auxiliary sensor is disposed at a position close to the first side edge and away from the second side edge.

5. The composite touch module according to claim 4, characterized in that: The control unit determines whether the sensing amount received by the auxiliary sensing component satisfies a first condition, which refers to determining whether the difference between the sensing amount of the first auxiliary sensor and the sensing amount of the second auxiliary sensor is less than a second threshold value.

6. The composite touch module according to claim 4, characterized in that: The control unit determines whether the sensing amount received by the auxiliary sensing component satisfies a first condition, which means determining whether the sensing amount of the first auxiliary sensor is greater than a first threshold value, and whether the difference between the sensing amount of the first auxiliary sensor and the sensing amount of the second auxiliary sensor is less than a second threshold value.

7. The composite touch module according to claim 2 or 3, characterized in that: The first auxiliary sensor is in a strip shape and is arranged parallel to the second side edge.

8. The composite touch module according to any one of claims 4 to 6, characterized in that: The first auxiliary sensor and the second auxiliary sensor are in the shape of long strips and are respectively arranged parallel to the first side edge and the second side edge.

9. The composite touch module according to any one of claims 1 to 6, characterized in that: Each of the first touch sensors corresponds to one of the second touch sensors, and each of the second touch sensors corresponds to one of the first touch sensors. The corresponding first touch sensors and the second touch sensors are electrically connected. The first touch sensor is electrically connected to the control unit through the second touch sensor, or the second touch sensor is electrically connected to the control unit through the first touch sensor.

10. The composite touch module according to any one of claims 1 to 6, characterized in that: The device further comprises a first light-emitting element and a second light-emitting element, wherein the first light-emitting element and the second light-emitting element are electrically connected to the control unit. When the control unit executes the function corresponding to the first touch sensor, the control unit simultaneously actuates the first light-emitting element to make it emit light; when the control unit executes the function corresponding to the second touch sensor, the control unit simultaneously actuates the second light-emitting element to make it emit light.

11. The composite touch module according to any one of claims 1 to 6, characterized in that: When the control unit executes the function corresponding to the first touch sensor, the function corresponding to the first touch sensor with the largest sensing amount is executed; when the control unit executes the function corresponding to the second touch sensor, the function corresponding to the second touch sensor with the largest sensing amount is executed.

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