LCD touch static display system

Abstract

The invention discloses a liquid crystal display (LCD) touch static display system, which belongs to the field of liquid crystal displays, and comprises a touch confirmation unit, an LCD display panel, a touch panel and a control unit, the control unit is respectively connected with the touch confirmation unit, the LCD display panel and the touch pad, and the touch confirmation unit is connected with the touch pad; the touch panel is used for sensing touch operation of a user; the touch confirmation unit is used for confirming that a touch event occurs according to the touch operation; the control unit is used for controlling the LCD display panel to display set light and shadow content according to the touch event, and controlling a preset area of the LCD display panel to display set feedback light and shadow according to the touch event after confirming that the light and shadow content is already displayed by the LCD display panel, so as to perform visual feedback on the touch operation. The invention aims to improve the visual feedback effect of the LCD touch display on the touch operation and reduce mistaken touch.

Description

Technical Field

[0001] The invention relates to the field of liquid crystal displays, and in particular to an LCD touch static display system. Background Art

[0002] LCD monitors are a common display device in daily life and industrial production. Some LCD touch monitors have added touch control functions to improve the operating experience. However, the touch display feedback of current LCD touch monitors is poor, which makes it difficult for users to intuitively determine whether the touch operation is effective through the display, which easily leads to misoperation. Summary of the invention

[0003] The present invention provides an LCD touch static display system to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The LCD touch static display system comprises: a touch confirmation unit, an LCD display panel, a touch pad and a control unit; The control unit is connected to the touch confirmation unit, the LCD display panel and the touch panel respectively, and the touch confirmation unit is connected to the touch panel; The touch panel is used to sense the user's touch operation; The touch confirmation unit is used to confirm the occurrence of a touch event according to the touch operation; The control unit is used to: control the LCD display panel to display set light and shadow content according to the touch event, and after confirming that the LCD display panel has completed displaying the light and shadow content, control a preset area of ​​the LCD display panel to display set feedback light and shadow according to the touch event to provide visual feedback for the touch operation.

[0005] Optionally, the preset area includes a corresponding area where the touch operation is sensed, and the feedback light and shadow includes causing light and shadow content displayed in the preset area to flash when the touch operation is sensed.

[0006] Optionally, the touch panel comprises: a dielectric front plate and an electrode sheet; The electrode sheet is attached to the back surface of the medium front plate, the electrode sheet is connected to the touch confirmation unit, and the front surface of the medium front plate is used to receive the touch operation of the user.

[0007] Optionally, the touch confirmation unit includes: a DSP processor and an oscillator; The oscillator is connected to the electrode sheet; The oscillator is used to generate a detection pulse in the electrode sheet; The DSP processor is used to obtain the oscillation frequency of the detection pulse, and confirm the occurrence of the touch event according to the difference between the oscillation frequency and the reference oscillation frequency of the oscillator.

[0008] Optionally, the oscillator is further used to calibrate the reference oscillation frequency according to a preset period.

[0009] Optionally, the preset period is every 24 hours.

[0010] Optionally, each LCD display segment of the LCD display panel is connected to the control unit via the same communication line, and the control unit is also used to send a driving signal to the communication line to statically drive each LCD display segment to form the light and shadow content and / or the feedback light and shadow.

[0011] Optionally, the number of the touch panels is greater than one, and each of the touch panels is used to drive the LCD display panel to display different light and shadow contents.

[0012] Optionally, the control unit and the touch confirmation unit are integrated into a touch control module, and the touch control module is connected to the touch panel and the LCD display panel through time division multiplexing.

[0013] Optionally, the LCD touch static display system further comprises a housing, and the housing is used to accommodate the touch confirmation unit, the LCD display panel, the touch pad and the control unit.

[0014] The present invention has at least the following beneficial effects: an LCD touch static display system comprises a touch confirmation unit, an LCD display panel, a touch pad and a control unit, wherein the control unit is respectively connected to the touch confirmation unit, the LCD display panel and the touch pad, and the touch confirmation unit is further connected to the touch pad, so that the touch pad can sense the user's touch operation, and the touch confirmation unit confirms whether a touch event occurs according to the touch operation, and the control unit controls the LCD display panel to display set light and shadow content according to the touch event to realize the touch function, and at the same time, after confirming that the LCD display panel has finished displaying the light and shadow content, controls a preset area of ​​the LCD display panel to display set feedback light and shadow according to the touch event, so that the user can confirm intuitive viewing angle feedback through the feedback light and shadow, thereby improving the visual feedback effect of the LCD touch display for touch operation, reducing false touches, and improving the touch experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0016] Figure 1It is a structural schematic diagram of the LCD touch static display system of the present invention; Figure 2 A schematic diagram of the connection between the touch panel and the touch confirmation unit in the LCD touch static display system of the present invention; Figure 3 It is a connection diagram of the display control module in the LCD touch static display system of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] It should be noted that, although the functional modules are divided in the system schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the system or the order in the flowchart. The terms "first", "second", etc. in the specification, claims and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0019] The embodiment of the present invention provides an LCD touch static display system. Figure 1 In this embodiment, the LCD touch static display system includes: a touch confirmation unit 410, an LCD display panel 200, a touch pad 300 and a control unit 420.

[0020] The control unit 420 is connected to the touch confirmation unit 410 , the LCD display panel 200 , and the touch panel 300 , respectively, and the touch confirmation unit 410 is connected to the touch panel 300 .

[0021] The touch panel 300 is used to sense a user's touch operation.

[0022] The touch confirmation unit 410 is used to confirm the occurrence of a touch event according to a touch operation.

[0023] The control unit 420 is used to: control the LCD display panel 200 to display the set light and shadow content according to the touch event, and after confirming that the LCD display panel 200 has finished displaying the light and shadow content, control the preset area of ​​the LCD display panel 200 to display the set feedback light and shadow according to the touch event to provide visual feedback for the touch operation.

[0024] It should be noted that Figure 1The LCD display panel 200 and the touch panel 300 constitute a human-computer interaction interface of the LCD touch static display system. The LCD display panel 200 is divided into a main display area 210 and a touch area. Figure 1 Indicated by dotted lines in the figure, the touch area is the area where the touchpad 300 is located. The touchpad 300 can sense the user's touch operations, which include click operations and sliding operations. The main display area 210 is used to display the light and shadow content that the device mainly wants to display. The light and shadow content is, for example, data used in numerical control production, or a set pattern. The area outside the main display area 210 on the LCD display panel 200, including the touch area, also has the function of displaying light and shadow content. For the touch area, a graphical touch button can be displayed to prompt the user that the touchpad 300 is set in this area, and the user can be prompted about the touch functions that the touchpad 300 can realize.

[0025] The touch confirmation unit 410 is connected to the touch panel 300. The touch confirmation unit 410 is used to confirm whether the touch operation sensed by the touch panel 300 is indeed a touch event to avoid accidental touch. The control unit 420 is respectively connected to the touch confirmation unit 410, the LCD display panel 200 and the touch panel 300. When the touch confirmation unit 410 confirms that a touch event has occurred, a signal corresponding to the touch event is sent to the control unit 420. The control unit 420 controls the main display area 210 of the LCD display panel 200 to display the set light and shadow content according to the touch event. After confirming that the display is complete, the control unit 420 controls the display of the set feedback light and shadow in the preset area of ​​the LCD display panel 200, and realizes the visual feedback of the user's touch operation through the feedback light and shadow.

[0026] An LCD touch static display system proposed in an embodiment of the present invention includes a touch confirmation unit 410, an LCD display panel 200, a touch pad 300 and a control unit 420. The control unit 420 is connected to the touch confirmation unit 410, the LCD display panel 200 and the touch pad 300 respectively. The touch confirmation unit 410 is also connected to the touch pad 300, so that the touch pad 300 can sense the user's touch operation, and the touch confirmation unit 410 confirms whether a touch event occurs according to the touch operation. The control unit 420 controls the LCD display panel 200 to display set light and shadow content according to the touch event to realize the touch function. At the same time, after confirming that the LCD display panel 200 has finished displaying the light and shadow content, the control unit 420 controls the preset area of ​​the LCD display panel 200 to display the set feedback light and shadow according to the touch event, so that the user can confirm intuitive viewing angle feedback through the feedback light and shadow, thereby improving the visual feedback effect of the LCD touch display for touch operation, reducing false touches, and improving the touch experience.

[0027] Furthermore, in this embodiment, the number of the touch panels 300 is greater than one, and each touch panel 300 is used to drive the LCD display panel 200 to display different light and shadow contents.

[0028] In order to realize more diverse touch functions, more than one touch panel 300 may be provided, such as Figure 1 Three touch panels 300 are provided, each of which is used to realize different touch functions, driving the LCD display panel 200 to display different light and shadow contents. Taking the main display area 210 display timing as an example, the three touch panels 300 can be respectively set to start timing, stop timing and reset timing. When confirming that a touch event has occurred, the touch confirmation unit 410 can further confirm the touch panel 300 where the touch operation has occurred to determine the type of touch time, so that the control unit 420 can realize the touch function corresponding to the touch panel 300 according to the type of touch event, thereby improving the touch experience.

[0029] Further, in the present embodiment, the preset area includes a corresponding area where the touch operation is sensed, and the feedback light and shadow includes causing light and shadow content displayed in the preset area to flash when the touch operation is sensed.

[0030] In order to enable the user to observe the feedback light and shadow more intuitively, the preset area includes the area where the touch operation is sensed, that is, the touch area. When the number of touch pads 300 is greater than one, the preset area can be limited to the area of ​​the touch pad 300 where the touch operation occurs. Taking the aforementioned touch button displaying a graphic in the touch area as an example, the feedback light and shadow is to make the graphic of the corresponding touch button flash. If the preset area does not display light and shadow content when a touch operation is sensed, the feedback light and shadow can also be a flashing set feedback pattern.

[0031] In other embodiments, in order to further improve the visual feedback effect of the feedback light and shadow, the preset area can also be set to an area of ​​the LCD display panel 200 other than the main display area 210, so that the feedback light and shadow can play the maximum feedback prompt role without affecting the light and shadow content displayed in the main display area 210.

[0032] The present embodiment selects visual feedback of feedback light and shadow because when a user performs a touch operation, the user generally observes the touch panel 300 with his eyes first to determine the correct position of the touch operation. Therefore, displaying feedback light and shadow in a preset area is also easy for the user to observe and receive feedback. Different from tactile and auditory feedback, considering that users at the production site may wear gloves or there may be large production noise at the site, visual feedback has a better feedback prompt effect than tactile and auditory feedback.

[0033] Furthermore, in this embodiment, the touch panel 300 includes: a dielectric front panel (not shown in the figure) and an electrode sheet 310 .

[0034] The electrode sheet 310 is attached to the back side of the medium front plate, the electrode sheet 310 is connected to the touch confirmation unit 410, and the front side of the medium front plate is used to receive the user's touch operation.

[0035] Specifically, the dielectric front plate provides a dielectric. When the human body contacts the dielectric front plate, it will affect the capacitance value of the electrode sheet 310 attached to the back of the dielectric front plate, forming self-capacitance sensing. The touch confirmation unit 410 connected to the electrode sheet 310 further detects the change in the capacitance value of the electrode sheet 310 to confirm whether a touch event occurs.

[0036] Furthermore, in this embodiment, the touch confirmation unit 410 includes: a DSP processor 412 and an oscillator 411 .

[0037] The oscillator 411 is connected to the electrode sheet 310 .

[0038] The oscillator 411 is used to generate a detection pulse in the electrode sheet 310 .

[0039] The DSP processor 412 is used to obtain the oscillation frequency of the detection pulse, and confirm the occurrence of a touch event according to the difference between the oscillation frequency and the reference oscillation frequency of the oscillator 411 .

[0040] Since the present embodiment detects the touch operation by the change of the capacitance value of the electrode sheet 310, Figure 2 The electrode sheet 310 is represented by an adjustable capacitor, and the electrode sheet 310 is connected to the circuit of the oscillator 411, and the oscillator 411 is connected to the DSP processor 412 (Digital Signal The oscillator 411 is connected to the electrode sheet 310 as a detection pulse and synchronizes the internal operation of the DSP processor 412. Since the oscillation frequency of the detection pulse is related to the inductance and capacitance of the oscillator 411, when the capacitance value of the electrode sheet 310 changes, the oscillation frequency will be driven to change. Therefore, the oscillation frequency of the detection pulse is obtained by the DSP processor 412, and whether a touch event occurs at present is determined according to the difference between the oscillation frequency and the reference oscillation frequency. The reference oscillation frequency is used as an indicator for comparison with the oscillation frequency. The reference oscillation frequency represents the normal frequency of the detection pulse when no touch operation occurs. For the difference between the oscillation frequency and the reference oscillation frequency, a frequency threshold can be set for comparison. When the difference is greater than or equal to the frequency threshold, it is determined that a touch event occurs. When the difference is less than the frequency threshold, it is determined that no touch event occurs. This can be regarded as a normal fluctuation of the capacitance value of the electrode sheet 310. Setting a change threshold is also helpful in avoiding the occurrence of false touch judgments.

[0041] By determining whether a touch event occurs according to the oscillation frequency and the reference oscillation frequency, it is not necessary to arrange an additional circuit for measuring the capacitance value of the electrode sheet 310, thereby simplifying the circuit for implementing the self-capacitance sensing function and reducing costs.

[0042] Furthermore, in this embodiment, the oscillator 411 is also used to calibrate the reference oscillation frequency according to a preset period.

[0043] The default value of the reference oscillation frequency is preset by the production personnel of the LCD touch static display system. The value is set to the oscillation frequency of the detection pulse of the oscillator 411 when the touch panel 300 is not touched by the human body. However, due to the influence of various factors of the external environment or internal circuits, the accuracy of touch event judgment may decrease during use. The oscillator 411 will calibrate the reference oscillation frequency according to the preset period. The user can set the preset period and time node of the calibration according to their needs. In this embodiment, the preset period is preset to every 24 hours, and the time node can be set to a time other than the production time, such as 12 o'clock in the evening.

[0044] By periodically calibrating the reference oscillation frequency, it is ensured that the touch confirmation unit 410 maintains the detection accuracy of the touch event, thereby improving the reliability of the LCD touch static display system.

[0045] In addition, in addition to determining whether a touch event has occurred based on the difference between the oscillation frequency and the reference oscillation frequency, in other embodiments, whether a touch event has occurred can also be determined based on the rate of change of the oscillation frequency. The rate of change of the oscillation frequency at several consecutive moments is calculated. When the rate of change is greater than or equal to a change threshold, it is determined that a touch event has occurred. When the rate of change is less than the change threshold, it is determined that no touch event has occurred.

[0046] Furthermore, in this embodiment, each LCD display segment of the LCD display panel 200 is connected to the control unit 420 via the same communication line, and the control unit 420 is also used to send a driving signal to the communication line to statically drive each LCD display segment to form light and shadow content and / or feedback light and shadow.

[0047] Specifically, the LCD touch display of this embodiment is driven and displayed by COG (Chip on glass). The LCD display panel 200 is formed by two pieces of polarized glass and multiple LCD drivers arranged on the back. Each LCD driver is connected to one end of the corresponding LCD display segment, and the other end of each LCD display segment is connected to a common end, that is, connected to the control unit 420 through the same communication line. The control unit 420 stores a driver program for controlling the LCD driver. In this way, the control unit 420 can statically drive each LCD display segment by outputting a driving signal with a relatively simple waveform, thereby forming light and shadow content and / or feedback light and shadow.

[0048] The static driving LCD method can achieve a more stable and faster response display effect, and improve the display effect of light and shadow content and feedback light and shadow.

[0049] Further, in this embodiment, reference Figure 3 The control unit 420 and the touch confirmation unit 410 are integrated into a touch control module 400, and the touch control module 400 is connected to the touch panel 300 and the LCD display panel 200 through time division multiplexing.

[0050] Specifically, in order to control the LCD display panel 200 to display light and shadow content and / or feedback light and shadow, the control unit 420 has a communication connection with the LCD display panel 200, and in order to detect a touch event, the touch confirmation unit 410 has a communication connection with the touch pad 300. In order to simplify the communication lines in the LCD touch static display system, the control unit 420 and the touch confirmation unit 410 are first integrated into a touch control module 400, and the communication lines are further divided inside the touch control module 400 to respectively connect the control unit 420 and the touch confirmation unit 410, and the touch control module 400 is connected to the LCD display through the same communication line. Near the panel 200, there are also branch lines connecting the LCD display panel 200 and the touch panel 300 respectively. In the part of the same communication line, information is transmitted through time division multiplexing, and different time slots are allocated for realizing input and output functions respectively. In the first time slot, the communication line is used to transmit information from the touch panel 300 to the touch confirmation unit 410, which is defined to be carried out in a first preset period. In the second time slot, the communication line is used to transmit information from the control unit 420 to the LCD display panel 200, which is defined to be carried out in a second preset period, wherein the first preset period is smaller than the second preset period to prevent the touch function from affecting the display effect of the light and shadow content and / or the feedback light and shadow.

[0051] By utilizing time division multiplexing technology, the control unit 420 and the touch confirmation unit 410 are integrated into the touch control module 400 to communicate with the LCD display panel 200 and the touch pad 300, which is beneficial to simplifying the communication lines in the LCD touch static display system, optimizing its internal utilization space, and reducing costs.

[0052] Furthermore, in the present embodiment, the LCD touch static display system further includes a housing 100 , and the housing 100 is used to accommodate the touch confirmation unit 410 , the LCD display panel 200 , the touch pad 300 and the control unit 420 .

[0053] Specifically, the housing 100 forms an outer frame that wraps around the edge of the LCD display panel 200. Figure 1And provide a containing structure for the internal touch confirmation unit 410 and the control unit 420, so that the LCD touch static display system is packaged, not easy to collide with other objects, and improve portability.

[0054] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0055] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0056] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0057] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0058] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0059] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store program codes.

[0060] Although the description of the present application has been quite detailed and specifically describes several described embodiments, it is not intended to be limited to any of these details or embodiments or any particular embodiment, but should be regarded as providing a broad possible interpretation of these claims by reference to the attached claims, taking into account the prior art, so as to effectively cover the intended scope of the present application. In addition, the above description of the present application is based on the embodiments foreseeable by the inventor, and its purpose is to provide a useful description, and those non-substantial changes to the present application that have not yet been foreseen may still represent equivalent changes to the present application.

Claims

1. An LCD touch static display system, characterized in that: The LCD touch static display system comprises: a touch confirmation unit, an LCD display panel, a touch pad and a control unit; The control unit is connected to the touch confirmation unit, the LCD display panel and the touch panel respectively, and the touch confirmation unit is connected to the touch panel; The touch panel is used to sense the user's touch operation; The touch confirmation unit is used to confirm the occurrence of a touch event according to the touch operation; The control unit is used to: control the LCD display panel to display set light and shadow content according to the touch event, and after confirming that the LCD display panel has completed displaying the light and shadow content, control a preset area of ​​the LCD display panel to display set feedback light and shadow according to the touch event to provide visual feedback for the touch operation.

2. The LCD touch static display system according to claim 1, characterized in that: The preset area includes a corresponding area where the touch operation is sensed, and the feedback light and shadow includes causing light and shadow content displayed in the preset area to flash when the touch operation is sensed.

3. The LCD touch static display system according to claim 1, characterized in that: The touch panel comprises: a dielectric front plate and an electrode sheet; The electrode sheet is attached to the back surface of the medium front plate, the electrode sheet is connected to the touch confirmation unit, and the front surface of the medium front plate is used to receive the touch operation of the user.

4. The LCD touch static display system according to claim 3, characterized in that: The touch confirmation unit includes: a DSP processor and an oscillator; The oscillator is connected to the electrode sheet; The oscillator is used to generate a detection pulse in the electrode sheet; The DSP processor is used to obtain the oscillation frequency of the detection pulse, and confirm the occurrence of the touch event according to the difference between the oscillation frequency and the reference oscillation frequency of the oscillator.

5. The LCD touch static display system according to claim 4, characterized in that: The oscillator is also used to calibrate the reference oscillation frequency according to a preset period.

6. The LCD touch static display system according to claim 5, characterized in that: The preset period is every 24 hours.

7. The LCD touch static display system according to claim 1, characterized in that: Each LCD display segment of the LCD display panel is connected to the control unit via the same communication line, and the control unit is also used to send a driving signal to the communication line to statically drive each LCD display segment to form the light and shadow content and / or the feedback light and shadow.

8. The LCD touch static display system according to claim 1, characterized in that: The number of the touch panels is greater than one, and each of the touch panels is used to drive the LCD display panel to display different light and shadow contents.

9. The LCD touch static display system according to claim 1, characterized in that: The control unit and the touch confirmation unit are integrated into a touch control module, and the touch control module is connected to the touch panel and the LCD display panel through time division multiplexing.

10. The LCD touch static display system according to claim 1, characterized in that: The LCD touch static display system further comprises a housing, wherein the housing is used to accommodate the touch confirmation unit, the LCD display panel, the touch pad and the control unit.

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