CN105204687A - Haptic feedback element, touch panel and display device, working method - Google Patents

Abstract

The invention provides a tactile feedback element, a touch panel, a display device and a working method, which belong to the technical field of touch control. Wherein, the tactile feedback structure includes: a substrate; M first signal lines and N second signal lines arranged in an array on the substrate, and the second signal lines are arranged to cross and insulate the first signal lines; A tactile feedback electrode located at the intersection of the first signal line and the second signal line, the first end of the tactile feedback electrode is connected to the first signal line, and the first end of the tactile feedback electrode is connected to the first signal line. The opposite second end is connected to the second signal line, and the tactile feedback electrode can be deformed when a voltage is applied to the tactile feedback electrode. The technical solution of the present invention can realize local protrusion and vibration of corresponding points when the user touches the touch panel, has fast feedback time and has no noise.

Description

Haptic feedback element, touch panel and display device, working method

technical field

The present invention relates to the field of touch technology, in particular to a touch panel, a display device and a working method.

Background technique

In recent years, with the rapid development of touch technology, various electronic products not only require simple touch functions, but also functions such as borderless, fingerprint recognition, iris recognition, etc. have penetrated into electronic products, and are favored by users. Widely favored. Among them, the tactile feedback function is that the system with tactile function in electronic products realizes operation feedback through tactile vibration, which mainly presents two forms of feeling: the first is full vibration, in this case, the entire electronic product will vibrate, for example, the The mobile phone is set to vibrate for incoming calls. When there is an incoming call, the entire mobile phone will vibrate; the second is local vibration, that is, when the user touches an electronic product, a slight and short-term vibration appears under the user's fingertips.

The existing tactile feedback technology widely used by electronic product manufacturers is a linear resonant actuator, which has a large volume, slow feedback time, and high noise, resulting in poor user experience.

Contents of the invention

The technical problem to be solved by the present invention is to provide a tactile feedback element, a touch panel and a display device, and a working method, which can realize local protrusions and vibrations at corresponding points when the user touches the touch panel, and the feedback time is fast and there is no noise.

In order to solve the above technical problems, embodiments of the present invention provide technical solutions as follows:

In one aspect, a tactile feedback structure is provided, including:

base;

M first signal lines and N second signal lines arranged in an array on the substrate are arranged, and the second signal lines are intersected and insulated from the first signal lines;

A tactile feedback electrode located at the intersection of the first signal line and the second signal line, the first end of the tactile feedback electrode is connected to the first signal line, and the first end of the tactile feedback electrode is connected to the first signal line. The opposite second end is connected to the second signal line, and when a voltage is applied to the tactile feedback electrode, the tactile feedback electrode can be deformed.

Further, the tactile feedback electrodes are made of transparent piezoelectric materials.

Further, the tactile feedback electrodes are circular or rectangular.

An embodiment of the present invention also provides a touch panel, including a substrate and a plurality of touch-sensing elements arranged on the substrate, and the touch panel further includes the above-mentioned tactile feedback structure.

Further, the tactile feedback electrodes are provided in one-to-one correspondence with the touch sensing elements.

Further, the tactile feedback structure is disposed on the surface of the base facing the substrate, and the distance between the base and the substrate is greater than the thickness of the tactile feedback electrodes.

Further, the substrate adopts tempered glass whose thickness is smaller than a first preset value or an inorganic thin film whose hardness is larger than a second preset value.

Further, the substrate is a protective film layer covering the touch sensing element.

Further, the substrate is a color filter substrate of a display panel, and the touch sensing element is arranged on a surface of the color filter substrate facing away from the array substrate of the display panel; or

The substrate is an encapsulation cover plate of an organic electroluminescent OLED display panel, and the touch sensing element is arranged on a surface of the encapsulation cover plate facing away from the array substrate of the OLED display panel.

An embodiment of the present invention also provides a display device, including the touch panel as described above, and further including:

The control module is configured to receive the touch signal sent by the touch sensing element, determine the position of the touch point, determine the corresponding first signal line and the second signal line according to the position of the touch point; The signal line applies a signal to make the tactile feedback electrode located at the intersection of the first signal line and the second signal line deform.

An embodiment of the present invention also provides a working method of a display device, which is applied to the above-mentioned display device, and the method includes:

receiving a touch signal sent by the touch sensing element, determining the position of the touch point, and determining a corresponding first signal line and a second signal line according to the position of the touch point;

A signal is applied to the determined first signal line and the second signal line, so that the tactile feedback electrode located at the intersection of the first signal line and the second signal line is deformed.

Embodiments of the present invention have the following beneficial effects:

In the above solution, an array of tactile feedback electrodes is formed on the substrate. When a voltage is applied to the tactile feedback electrodes, the tactile feedback electrodes can be deformed. In this way, when the user's finger touches a certain point, the tactile feedback electrodes at the corresponding point are applied with a voltage. , to make it deform, and then enable the user to obtain tactile feedback, thereby realizing the local tactile feedback function, and the tactile feedback electrode of the present invention is small in size, fast in feedback time, and has no noise. Utilizing the tactile feedback structure of the present invention can make the use of the touch screen simpler and full of fun.

Description of drawings

FIG. 1 is a schematic diagram of deformation of a tactile feedback electrode in an embodiment of the present invention after being applied with a voltage;

2 is a schematic structural diagram of a touch panel according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an arrangement of tactile feedback electrodes on a substrate according to an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

The embodiments of the present invention aim at the problem that the existing tactile feedback technology uses a linear resonant actuator, which has a large volume, slow feedback time, and high noise, resulting in poor user experience, and provides a tactile feedback element The touch panel, display device, and working method can realize local protrusions and vibrations at corresponding points when a user touches the touch panel, with fast feedback time and no noise.

Embodiment one

This embodiment provides a tactile feedback structure, including:

base;

a plurality of first signal lines disposed on the substrate;

a plurality of second signal lines disposed on the substrate and cross-isolated with the first signal lines;

A tactile feedback electrode located at the intersection of the first signal line and the second signal line, the first end of the tactile feedback electrode is connected to the first signal line, and the first end of the tactile feedback electrode is connected to the first signal line. The opposite second end is connected to the second signal line, and when a voltage is applied to the tactile feedback electrode, the tactile feedback electrode can be deformed.

In this embodiment, an array of tactile feedback electrodes is formed on the substrate. When a voltage is applied to the tactile feedback electrodes, the tactile feedback electrodes can be deformed, so that when the user's finger touches a certain point, by applying a voltage to the tactile feedback electrodes at the corresponding point, It is deformed so that the user can obtain tactile feedback, thereby realizing the local tactile feedback function, and the tactile feedback electrode of the present invention is small in size, fast in feedback time, and has no noise. Utilizing the tactile feedback structure of the present invention can make the use of the touch screen simpler and full of fun.

Further, the tactile feedback electrodes are made of transparent piezoelectric materials, and the substrate can also be made of transparent materials, so that when the tactile feedback structure is applied to a touch display panel, the transparent tactile feedback electrodes and the substrate will not affect the to the display on the touch display panel.

The characteristic of the piezoelectric material is that it will deform after applying a voltage. The left part of Fig. 1 shows the original state of the rectangular tactile feedback electrode 4, and the right part of Fig. 1 shows the rectangular tactile feedback electrode 4 after the voltage is applied. It can be seen from Fig. 1 that when a voltage is applied to the tactile feedback electrode 4 made of transparent piezoelectric material, the tactile feedback electrode 4 can be bent and deformed, thereby enabling the user to obtain tactile feedback, thereby realizing local tactile sensation feedback function.

In a specific embodiment, the tactile feedback electrodes may be circular or rectangular.

Embodiment two

This embodiment provides a touch panel, which includes a substrate and a plurality of touch sensing elements arranged on the substrate, and the touch panel further includes the above-mentioned tactile feedback structure.

In this embodiment, an array of tactile feedback electrodes is formed on the substrate. When a voltage is applied to the tactile feedback electrodes, the tactile feedback electrodes can be deformed. In this way, when the user's finger touches a certain point on the touch panel, the tactile feedback electrodes at the corresponding point are applied. The voltage makes it deform, and then enables the user to obtain tactile feedback, thereby realizing the local tactile feedback function, and the tactile feedback electrode of the present invention is small in size, fast in feedback time, and has no noise. Utilizing the tactile feedback structure of the present invention can make the use of the touch panel easier and full of fun.

In a preferred embodiment, the tactile feedback electrodes are set in one-to-one correspondence with the touch sensing elements, so that when the user touches the touch panel, after the touch sensing element detects a touch signal, the tactile feedback electrodes corresponding to the touch sensing elements can be applied. Voltage, so that the user can get tactile feedback.

In a preferred embodiment, the tactile feedback structure is arranged on the surface of the substrate facing the substrate, and the distance between the substrate and the substrate is greater than the thickness of the tactile feedback electrodes, so that on the one hand, the substrate can be used to protect the tactile feedback electrodes, and on the other hand, it can give The tactile feedback electrodes leave enough room for deformation.

In a specific embodiment, the substrate can be reinforced glass with a thickness smaller than the first preset value or an inorganic thin film with a hardness greater than the second preset value. When the substrate is made of these materials, the tactile feedback electrode can also be felt through the substrate. Deformation does not affect the tactile feedback effect.

In a preferred embodiment, the substrate is a protective film layer covering the touch sensing element, so that on the one hand, the substrate can be used to protect the touch sensing element; Made of two pre-set inorganic thin films, there will be no interference and crosstalk with the touch sensing element, and will not affect the sensitivity of the touch panel.

In a specific embodiment, the touch panel may be integrated with the display panel, and the substrate on which the touch sensing element is disposed may specifically be a color filter substrate of the display panel or an encapsulation cover of the OLED display panel. For example, the substrate is a color filter substrate of a display panel, and the touch sensing element is arranged on the surface of the color filter substrate facing away from the array substrate of the display panel; or the substrate is an organic electroluminescence OLED display panel An encapsulation cover plate, the touch sensing element is arranged on the surface of the encapsulation cover plate facing away from the array substrate of the OLED display panel.

Embodiment Three

This embodiment provides a display device, including the above-mentioned touch panel, and further including:

The control module is configured to receive the touch signal sent by the touch sensing element, determine the position of the touch point, determine the corresponding first signal line and the second signal line according to the position of the touch point; The signal line applies a signal to make the tactile feedback electrode located at the intersection of the first signal line and the second signal line deform.

In this embodiment, an array of tactile feedback electrodes is formed on the substrate. When a voltage is applied to the tactile feedback electrodes, the tactile feedback electrodes can be deformed. In this way, when the user's finger touches a certain point on the display screen of the display device, the tactile feedback of the corresponding point A voltage is applied to the feedback electrode to deform it, thereby enabling the user to obtain tactile feedback, thereby realizing a local tactile feedback function, and the tactile feedback electrode of the present invention is small in size, fast in feedback time, and has no noise. Utilizing the tactile feedback structure of the present invention can make the use of the display device more simple and full of fun.

Specifically, the display device may be any product or component with a display function such as a liquid crystal panel, a liquid crystal TV, a liquid crystal display, a digital photo frame, a mobile phone, and a tablet computer.

Embodiment four

This embodiment provides a working method of a display device, which is applied to the above-mentioned display device, and the method includes:

receiving a touch signal sent by the touch sensing element, determining the position of the touch point, and determining a corresponding first signal line and a second signal line according to the position of the touch point;

A signal is applied to the determined first signal line and the second signal line, so that the tactile feedback electrode located at the intersection of the first signal line and the second signal line is deformed.

In this embodiment, when a voltage is applied to the tactile feedback electrodes on the substrate, the tactile feedback electrodes can be deformed, so that when the user's finger touches a certain point on the display screen of the display device, by applying a voltage to the tactile feedback electrodes at the corresponding point, the It is deformed so that the user can obtain tactile feedback, thereby realizing the local tactile feedback function, and the tactile feedback electrode of the present invention is small in size, fast in feedback time, and has no noise. Utilizing the tactile feedback structure of the present invention can make the use of the display device more simple and full of fun.

Embodiment five

This embodiment provides a touch panel. As shown in FIG. 2 , the touch panel includes: an array substrate 1 , a color filter substrate 2 arranged opposite to the array substrate 1 , and a touch sensing element 3 arranged on the color filter substrate 2 At the same time, the driving circuit and sensing circuit connected to the touch sensing element 3 are also fabricated on the color filter substrate 2, and the protective film layer 5 arranged opposite to the color filter substrate 2 is provided with a plurality of tactile feedback electrodes 4 . Wherein, the tactile feedback electrode 4 is made of a transparent piezoelectric material, and the distance between the protective film layer 5 and the color filter substrate 2 is greater than the thickness of the tactile feedback electrode 4, so that on the one hand, the protective film layer 5 can be used for the tactile feedback electrode 4 and The touch sensing element 3 is protected, and on the other hand, sufficient deformation space can be reserved for the tactile feedback electrode 4 . The protective film layer 5 can be made of strengthened glass with a thickness less than the first preset value or an inorganic film with a hardness greater than the second preset value, such as ultra-thin strengthened glass, or a high-strength wear-resistant protective film, so that the protective film There will be no interference and crosstalk between the layer 5 and the touch sensing element 3, and will not affect the sensitivity of the touch panel.

As shown in Figure 3, a plurality of first signal lines (G1, G2, ..., G1536, ...) and a plurality of second signal lines (D1, D2, ..., D2049, ...), the tactile feedback electrode 4 is located at the intersection of the first signal line and the second signal line, the first end of the tactile feedback electrode 4 is connected to the first signal line, and the first end of the tactile feedback electrode 4 is connected to the first end The opposite second end is connected to the second signal line. When the touch panel is working, when the touch sensing element detects a touch signal, the position of the touch point is determined according to the touch signal, and the corresponding first signal line and second signal line are determined according to the position of the touch point. Line, by applying a signal to the corresponding first signal line and second signal line and then applying a voltage to the tactile feedback electrode 4 corresponding to the touch sensing element, the tactile feedback electrode 4 can deform and bounce back, thereby realizing the local tactile feedback function , the tactile feedback electrode 4 of this embodiment can realize two feedback functions of protrusion and vibration, and has a better user experience.

In this embodiment, an array of tactile feedback electrodes is formed on the protective film layer. When a voltage is applied to the tactile feedback electrodes, the tactile feedback electrodes can be deformed. A voltage is applied to the electrode to deform it, thereby enabling the user to obtain tactile feedback, thereby realizing a local tactile feedback function, and the tactile feedback electrode of this embodiment is small in size, fast in feedback time, and has no noise. Utilizing the tactile feedback structure of this embodiment can make the use of the touch panel easier and full of fun.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (11)

1. a tactile feedback structure, is characterized in that, comprising:

Substrate;

Be arranged on M bar first signal wire and the N bar secondary signal line of array arrangement in described substrate, described secondary signal line and described first signal wire transposition insulator are arranged;

Be positioned at the tactile feedback electrode of described first signal wire and described secondary signal line infall, the first end of described tactile feedback electrode is connected with described first signal wire, second end relative with described first end of described tactile feedback electrode is connected with described secondary signal line, when to described tactile feedback electrode application voltage, can there is deformation in described tactile feedback electrode.

2. tactile feedback structure according to claim 1, is characterized in that, described tactile feedback electrode is made for adopting transparent piezoelectric material.

3. tactile feedback structure according to claim 1, is characterized in that, described tactile feedback electrode is circular or rectangle.

4. a touch panel, comprise substrate, setting multiple touch sensible elements on the substrate, it is characterized in that, described touch panel also comprises the tactile feedback structure according to any one of claim 1-3.

5. touch panel according to claim 4, is characterized in that, described tactile feedback electrode and described touch sensible element one_to_one corresponding are arranged.

6. touch panel according to claim 4, is characterized in that, described tactile feedback vibrational power flow is on the surface of described substrate towards described substrate, and the distance between described substrate and described substrate is greater than the thickness of described tactile feedback electrode.

7. touch panel according to claim 6, is characterized in that, the inorganic thin film that described substrate adopts thickness to be less than the tempered glass of the first preset value or hardness to be greater than the second preset value.

8. touch panel according to claim 7, is characterized in that, described substrate is the protective film covering described touch sensible element.

9. touch panel according to claim 4, is characterized in that, described substrate is the color membrane substrates of display panel, and described touch sensible element is arranged on the surface of the described color membrane substrates array base palte of described display panel dorsad; Or

Described substrate is the encapsulation cover plate of organic electroluminescent OLED display panel, and described touch sensible element is arranged on the surface of the described encapsulation cover plate array base palte of described OLED display panel dorsad.

10. a display device, is characterized in that, comprises the touch panel according to any one of claim 4-9, also comprises:

Control module, for receiving the touch signal that described touch sensible element sends, determining position, touch point, determining the first corresponding signal wire and secondary signal line according to position, described touch point; Apply signal to the first signal wire determined and secondary signal line, make the tactile feedback electrode generation deformation being positioned at described first signal wire and secondary signal line point of crossing place.

The method of work of 11. 1 kinds of display device, is characterized in that, is applied to display device as claimed in claim 10, and described method comprises:

Receive the touch signal that described touch sensible element sends, determine position, touch point, determine the first corresponding signal wire and secondary signal line according to position, described touch point;

Apply signal to the first signal wire determined and secondary signal line, make the tactile feedback electrode generation deformation being positioned at described first signal wire and secondary signal line infall.