WO2019113824A1 - Flexible touch display device and touch compensation method - Google Patents

Abstract

A touch compensation method, applied to a flexible touch display screen, comprises the steps of: generating a corresponding detection signal by means of detecting electrical parameters of each light-emitting display device (11) of a flexible touch display device (100) respectively by means of several detection units (12) in a flexible touch display screen; determining, according to the detection signal generated by each detection unit (12), whether a change in the electrical parameters of each light-emitting display device (11) occurs, and determine whether the change amount satisfies a predetermined condition; determining at least one target pixel point (P1) corresponding to at least one light-emitting display device (11) whose change amount in the electrical parameters satisfies the predetermined condition, and determining, according to the at least one target pixel point (P1), at least one target touch unit (21) that needs to be compensated; and performing touch compensation on the at least one target touch unit (21). A flexible touch display device (100). The flexible touch display device (100) and the touch compensation method can effectively detect a bending area and perform touch compensation.

Description

Flexible touch display device and touch compensation method Technical field

The present invention relates to a touch control technology, and more particularly to a flexible touch display device and a touch compensation method for the flexible touch display device.

Background technique

At present, an OLED (Organic Light Emitting Diode) display has been widely used. Since the OLED display is self-illuminated by a diode, the thickness can be made thinner and can be made into a flexible display. A flexible touch screen is constructed using an OLED display integrated with a flexible touch panel. Since the flexible touch display can be wound freely, more scenes can be applied and adapted.

However, in the existing flexible touch display screen, if winding or bending occurs, the touch sensitivity at the bend portion may change significantly with respect to the region where the bending does not occur, and the jump amount may be caused due to uneven touch variation. The phenomenon causes the bend to fail to respond effectively and accurately to the touch.

Summary of the invention

The embodiment of the invention discloses a flexible touch display device and a touch compensation method, which can effectively detect the position where the bending occurs and perform touch compensation on the position where the bending occurs.

Embodiments of the present invention disclose a flexible touch display device including a flexible display panel, a flexible touch panel, and a processor. The flexible display panel includes a plurality of light emitting display devices arranged in an array and a plurality of detecting units. Each of the light emitting display devices is electrically connected to a detecting unit, and each of the light emitting display devices corresponds to a pixel point, and each detecting unit is used for each detecting unit. A corresponding detection signal is generated by detecting electrical parameters of the light emitting display device. The flexible touch panel is stacked on the flexible display panel, and the flexible touch panel includes a plurality of touch units, each touch unit corresponding to a plurality of pixel points. The processor is electrically connected to the detecting unit and the plurality of touch units, and is configured to receive the detection signal generated by each detecting unit, and determine according to the detection signal generated by each detecting unit. Each Whether the electrical parameter of the light-emitting display device changes and whether the amount of change meets a preset condition, and when it is determined that the amount of change of the electrical parameter of the at least one light-emitting display device satisfies a preset condition, determining that the amount of change of the electrical parameter meets the preset condition At least one target pixel corresponding to the at least one illuminating display device, and determining a target touch unit that needs to be compensated according to the at least one target pixel point, and performing touch compensation on the target touch unit.

The present application further discloses a touch compensation method, which is applied to a flexible touch display device. The flexible touch display device includes a plurality of arrayed light emitting display devices and a plurality of detecting units, and each detecting unit corresponds to a light emitting display device. The touch compensation method includes the steps of: detecting, by each of the detecting units, the electrical parameters of each of the light-emitting display devices of the flexible touch display device to generate a corresponding detection signal; and detecting signals generated by each detecting unit Determining whether the electrical parameter of each of the light-emitting display devices changes and determining whether the amount of change satisfies a preset condition; and determining that the amount of change in the electrical parameter satisfies a preset condition when determining that the amount of change of the electrical parameter of the at least one light-emitting display device satisfies a preset condition At least one target pixel corresponding to the at least one illuminating display device of the preset condition, and determining at least one target touch unit that needs to be compensated according to the at least one target pixel point.

The flexible touch display device and the touch compensation method of the present application determine a target pixel point in a bending region by detecting a change in an electrical parameter of the light emitting display device, and further determine the bending region according to the target touch unit corresponding to the target pixel point. The at least one target touch unit that needs to be compensated compensates at least one target touch unit, and can accurately detect any position where the bending occurs, and compensates the touch at the position where the bending occurs, thereby improving the touch. The touch performance of the flexible touch display device in a bent scene improves the user experience.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a side structural view of a flexible touch display device in accordance with an embodiment of the present invention.

2 is a block diagram showing the structure of a flexible touch display device according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of cell division for a flexible touch panel and a flexible display panel according to an embodiment of the invention.

4 is a block diagram showing the structure of a flexible display panel in accordance with an embodiment of the present invention.

FIG. 5 is a schematic diagram of a target touch unit corresponding to a flexible touch display device in a bending manner according to an embodiment of the invention.

FIG. 6 is a schematic view showing a bending center position of a touch unit according to an embodiment of the present invention.

FIG. 7 is a schematic diagram of a bending center position of a touch unit according to another embodiment of the present invention.

FIG. 8 is a schematic diagram of a bending center position of a touch unit in still another embodiment of the present invention.

FIG. 9 is a specific circuit diagram of a detecting unit and a driving unit according to an embodiment of the invention.

FIG. 10 is a structural block diagram of a processor in an embodiment of the present invention.

FIG. 11 is a flowchart of a touch compensation method according to an embodiment of the present invention.

Figure 12 is a sub-flow diagram of an embodiment of step S97 of Figure 11.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Please refer to FIG. 1 , which is a side view of a flexible touch display device 100 according to an embodiment of the invention. As shown in FIG. 1 , the flexible touch display device 100 includes a flexible display panel 1 and a flexible touch panel 2 laminated on the flexible display panel 1 . The flexible display panel 1 is used for displaying a picture, and the flexible touch panel 2 is used for human-computer interaction for touch input.

Please refer to FIG. 2 , which is a structural block diagram of the flexible touch display device 100 . The flexible touch display device 100 includes the aforementioned flexible display panel 1 , the flexible touch panel 2 , and further includes a processor 3 .

Please refer to FIG. 3 together for a schematic diagram of unit division of the flexible touch panel 2 and the flexible display panel 1. As shown in FIG. 3, the flexible touch panel 2 is divided into a plurality of touch units 21 according to the touch resolution, each of which The touch unit 21 can be regarded as a touch point area. The flexible display panel 1 is also divided into a plurality of pixel points P1 according to the display resolution. That is, the flexible touch panel 2 includes a plurality of touch units 21 including a plurality of pixel points. In general, the touch unit 21 divides the recognition sensitivity of the user's finger or the stylus, and the area of the touched point area required for the touch is generally significantly larger than the area of the pixel point P1, and thus, each touch unit 21 corresponds to A plurality of pixel points P1. Here, in FIG. 3, the pixel point P1 of the flexible display panel 1 is illustrated as an example only at the position of the partial touch unit 21. The division of the flexible touch panel 2 and the flexible display panel 1 is logically divided.

Please refer to FIG. 4 together, which is a structural block diagram of the flexible display panel 1. The flexible display panel 1 includes a plurality of light emitting display devices 11 arranged in an array and a plurality of detecting units 12. Each of the light emitting display devices 11 is electrically connected to a detecting unit 12 . Each of the light-emitting display devices 11 corresponds to a pixel point P1.

Each detecting unit 12 is configured to detect an electrical parameter of the light emitting display device 11 to generate a corresponding detecting signal.

The processor 3 is electrically connected to the plurality of detecting units 12 and the plurality of touch units 21 for receiving the detection signals generated by each detecting unit 12, and detecting according to each detecting unit 12 The measurement signal determines whether the electrical parameter of each of the light-emitting display devices 11 has changed and whether the amount of change satisfies a preset condition. The electrical parameter includes at least one of a voltage and a current, and the detection signal includes at least one of a voltage value and a current value. The preset condition is that the amount of change is greater than a first preset threshold and less than a second preset threshold, and the second preset threshold is much smaller than the display of the flexible display panel 1 when the frame is switched. The amount of change in the electrical parameter of the display device 11 is displayed, and the first predetermined threshold may be zero or greater than zero and less than the second predetermined threshold. When the processor 3 determines that the amount of change is greater than the first preset threshold and is less than the second preset threshold, determining that the preset condition is met, the processor 3 determines that the amount of change is less than the first preset threshold or greater than the second preset threshold. When it is determined, the preset condition is not satisfied.

The processor 3 determines, when the amount of change in the electrical parameter of the at least one light-emitting display device 11 meets the preset condition, determining at least one target corresponding to the at least one light-emitting display device 11 that the amount of change in the electrical parameter meets the preset condition a pixel P1, and determining at least one target touch unit 21 that needs to be compensated according to the at least one target pixel point P1, and for the at least one target touch unit 21 performs touch compensation.

Therefore, in the present application, the detection unit 12 detects the change of the electrical parameter of the light-emitting display device 11 to determine the target pixel point P1 in the bending region, and further determines that the target pixel unit P21 corresponds to the target pixel unit P1. The at least one target touch unit 21 of the folded area needs to be compensated to compensate at least one target touch unit 21, and the present invention can accurately detect any position where the bending occurs, and perform the touch at the position where the bending occurs. The good compensation eliminates the abnormality of the touch parameter variation caused by the bending, prevents the jump of the touch position, and improves the touch performance of the flexible touch display device 100 in the bending scene.

In some embodiments, both the flexible display panel 1 and the flexible touch panel 2 are mapped to the same coordinate system, and each coordinate corresponds to one pixel point P1. For example, all of the pixel points P1 of the flexible display panel 1 correspond to one coordinate value, and each touch unit 21 of the flexible touch panel 2 corresponds to one coordinate set. After determining the target pixel point P1, the processor 3 determines that the touch unit 21 corresponding to the target pixel point P1 is the target touch unit 21 according to the coordinate set to which the coordinate corresponding to the target pixel point P1 belongs, that is, as long as A touch unit 21 corresponds to a target pixel point P1, indicating that a bending occurs at a corresponding position of the touch unit 21, thereby determining that the touch unit 21 is a target touch unit 21 that needs to be compensated, thereby determining at least one Target touch unit 21.

Referring to FIG. 5 together, when the flexible touch display device 100 is bent, the electrical parameters of the light-emitting display device 11 corresponding to the bending region will change, such as a current value or a voltage value, and the detecting unit 12 can respond to the corresponding bend. The electrical parameter of the light-emitting display device 11 of the folded area is detected, and the detected value is fed back to the processor. When the detected change amount of the electrical parameter meets the preset condition, the processor determines the light-emitting display device 11 at this time. The corresponding pixel point P1 is the target pixel point P1, and the touch unit 21 corresponding to the target pixel point P1 is determined to be the target touch unit 21, thereby determining a plurality of target touch units 21 located in the bending area Z1 as shown in FIG. 5. For example, the areas A, B, and C shown in FIG.

In some embodiments, the processor 3 performs touch compensation on the at least one target touch unit 21 as a ratio of the number of target pixel points P1 in the target touch unit 21 to the number of all pixel points P1 in the target touch unit 21. Come on. That is, in some embodiments, the processor 3 performing touch compensation on the at least one touch unit 21 includes determining that the number of target pixel points P1 included in each touch unit 21 occupies all the pixel points P1 in the touch unit 21 Proportion and according to the ratio For example, touch compensation is performed for each touch unit 21. In some embodiments, the processor 3 determines each touch unit according to the ratio of the number of coordinates of the target pixel point P1 included in each touch unit 21 to the number of coordinates in the coordinate set corresponding to the touch unit 21. The number of target pixel points P1 included in 21 accounts for the ratio of all pixel points P1 in the touch unit 21.

Further, as shown in FIG. 3, the flexible touch panel 2 is provided with a matrix-arranged touch node J1, and adjacent touch nodes J1 are connected to each other to form a touch unit 21, and the touch unit 21 includes A plurality of touch nodes J1 that form the touch unit 21 are surrounded. For example, as shown in FIG. 3, four touch nodes J1 are connected in series to form one touch unit 21, and each touch unit 21 includes four touch nodes J1. The touch node J1 can be a mutual capacitive touch sensing point or a self-capacitive touch sensing point. Generally, when the user touches by a finger or a stylus, the touch node J1 is contacted, and the plurality of touch nodes J1 are analyzed. The touched touch unit 21 is determined to obtain the final user touch position. As shown in FIG. 3, each touch unit 21 is a rectangle, and each touch unit 21 includes four touch nodes located at the vertices of the rectangle.

Therefore, the touch detection function of the touch unit 21 is actually implemented by the touch node J1. In the present application, the processor 3 performs touch compensation on a certain touch unit 21 to pass the corresponding touch node J1 of the touch unit 21. Compensate for implementation.

The processor 3 determines the touch node J1 that needs to be compensated according to the ratio of the number of target pixel points P1 included in each touch unit 21 to the number of all pixel points P1 in the touch unit 21, and determines the The touch node J1 that needs compensation is compensated.

Specifically, the processor 3 controls the touch unit when the ratio of the number of target pixel points P1 included in the touch unit 21 to the total number of pixels P1 included in the touch unit 21 exceeds a preset ratio. All touch nodes J1 of 21 perform touch compensation.

Determining, by the processor 3, a bending center position of the touch unit 21 when the ratio of the area of the target pixel point P1 included in the touch unit 21 to the touch unit 21 is less than the preset ratio, The touch node J1 of the touch unit 21 having a distance from the bending center position that is smaller than the preset distance is compensated. In some embodiments, the preset ratio is 1/2. Obviously, in other embodiments, the preset ratio may also be 1/3, 2/5, etc., and may be adjusted as needed. The preset distance may be a value determined according to the touch resolution. When the distance between the bending center position and the touch node J1 is less than the preset distance, the impact of the touch parameter variation on the touch needs to be touched. Make up Reimbursement.

Specifically, the processor 3 determines the bend of the touch unit 21 according to the coordinates of all the target pixel points P1 in the touch unit 21 and the electrical parameter change amount of the light-emitting display device 11 corresponding to each target pixel point P1. Fold the center position.

Wherein, the coordinate of the bending center position C1 is (Xc1, Yc1), and the processor 3 calculates a formula according to the X coordinate:

Calculating the X coordinate Xc1 of the bending center position C1, where x _p refers to the X coordinate of the Pth target pixel point P1 in the touch unit 21, and ΔEp refers to the illuminance corresponding to the Pth target pixel point P1 The amount of change in the electrical parameter of the display device 11 is shown.

The processor 3 calculates a formula according to the Y coordinate:

Calculating the Y coordinate Yc1 of the bending center position C1, where y _p refers to the Y coordinate of the Pth target pixel point P1 in the touch unit 21, and ΔEp refers to the illuminance corresponding to the Pth target pixel point P1 The amount of change in the electrical parameter of the display device 11 is shown.

In the present application, the flexible touch display device 100 may set the lower left corner vertex of the flexible touch display device 100 as an origin, and the long side connected to the lower left corner vertex as an X axis, and the lower left The wide side of the corner vertex connection is set to the Y axis, and a Cartesian coordinate system is established, thereby determining the position of the pixel point P1/target pixel point P1 and the position of the touch unit 21.

Please refer to FIG. 6 as a schematic diagram of the bending center position C1 of a touch unit 21 in an embodiment. As shown in FIG. 6, the touch unit 21 includes four touch nodes J1a, J1b, J1c, and J1d. If the calculated bending center position C1 and the touch nodes J1a and J1b are less than a preset distance, and the touch node J1c The distance of J1d is greater than the preset distance, and the processor 3 controls touch compensation on the touch nodes J1a, J1b of the touch unit 21.

Please refer to FIG. 7 as a schematic diagram of the bending center position C1 of a touch unit 21 in another embodiment. In another embodiment, if the calculated bending center position C1 is less than the preset distance from the touch nodes J1b, J1c, and the distance from the touch nodes J1a, J1d is greater than the preset distance The processor 3 controls touch compensation on the touch nodes J1b, J1c of the touch unit 21.

Please refer to FIG. 8 as a schematic diagram of the bending center position C1 of a touch unit 21 in still another embodiment. In other embodiments, if the calculated bending center position C1 is only less than the preset distance from the touch node J1b, and the distance from the touch node J1ca, J1c, J1d is greater than the preset distance, the The processor 3 only controls touch compensation to the touch node J1b of the touch unit 21. The processor 3 performs touch compensation on the touch node J1 of the touch unit 21 to compensate the touch parameters of the touch node J1 according to a preset compensation factor. The compensation factor may be determined in advance according to a touch parameter that needs to be compensated when bending. The touch parameters include touch sensitivity, touch position, and the like.

Referring to FIG. 2 , as shown in FIG. 2 , the flexible display panel 1 further includes a plurality of driving units 13 , each of which is electrically connected to a light emitting display device 11 for driving the light emitting display unit 11 . display.

The processor 3 is connected to the plurality of driving units 13 for applying a corresponding driving signal to the corresponding driving unit 13 according to the display data of the current display screen, so as to drive the corresponding lighting display by the corresponding driving unit 13. The device 11 emits light, and the plurality of light-emitting display devices 11 arranged in an array emit corresponding light to form a corresponding display screen.

Please refer to FIG. 9 , which is a schematic diagram of a specific structure of the driving unit 13 and the detecting unit 12 in an embodiment.

In some embodiments, each drive unit 13 includes a scan switch tube T1 and a drive switch tube T2. The driving switch tube T2 is electrically connected between a driving power source Vpos, the scan switch tube T1 and the corresponding light emitting display device 2. The scan switch tube T1 is also electrically connected to the processor 3, and the processor 3 applies the drive signal through the scan switch tube T1.

In some embodiments, the scan switch tube T1 and the drive switch tube T2 are MOS tubes, and the light emitting display device 2 includes an Organic Light Emitting Diode (OLED) D1, and electrical parameters of the light emitting display device 11 That is, the voltage or current of the positive electrode V+ of the organic light emitting diode D1. The source of the driving switch T2 is connected to the driving power source Vpos, the drain is connected to the anode V+ of the organic light emitting diode D1, and the gate of the driving switch tube T2 is connected to the drain of the scan switch tube T1. The source and the gate of the scan switch tube T1 are connected to the processor 3 Pick up. The anode V- of the organic light emitting diode D1 is grounded.

As shown in FIG. 9, the light-emitting display device 2 includes only one organic light-emitting diode D1. It is obvious that in other embodiments, the light-emitting display device 2 may include a plurality of organic light-emitting diodes D1 connected in series or in parallel.

The driving signal applied by the processor 3 according to the display data of the current display screen includes a scan signal Gn and a data signal Dn, and the processor 3 outputs the scan signal Gn to the gate of the corresponding scan switch tube T1 to control the The scan switch tube T1 is turned on, and outputs a data signal Dn to the source of the turned-on scan switch tube T1 to transmit the data signal Dn to the drive switch tube T2 through the turned-on scan switch tube T1. a gate, and controlling the conduction state and the conduction degree of the driving switch tube T2, that is, driving the switching transistor T2 to be turned on with a certain degree of conduction, so that the driving power source Vpos can apply a corresponding driving voltage to the The light-emitting display device 2/organic light-emitting diode D1 is controlled to control the light-emitting display device 2/organic light-emitting diode D1 to emit light.

A storage capacitor C2 is further connected between the source and the gate of the driving switch tube T2.

When the flexible touch display device 100 is bent, the capacitance value of the storage capacitor C2 changes, for example, the positive facing area of the storage capacitor C2 changes to cause the capacitance value of the storage capacitor C2 to change. At this time, a change in the capacitance value of the storage capacitor C2 causes a change in the voltage and/or current isoelectric parameters of the positive electrode V+ of the organic light emitting diode D1 connected to the drive switching transistor T2.

As shown in FIG. 9, the detecting unit 12 includes a detecting switch tube T3. In some embodiments, the detection switch tube T3 is also a MOS tube. The source of the detecting switch tube T3 is electrically connected to the positive electrode V+ of the organic light emitting diode D1, the drain of the detecting switch tube T3 constitutes a detecting end T_test, and the gate of the detecting switch tube T3 is formed. A scan terminal T_scan, the detection terminal T_test and the scan terminal T_scan are electrically connected to the processor 3.

The detecting unit 12 detects the electrical parameters of the light-emitting display device 11 to generate a corresponding detection signal, and specifically includes: the processor 3 controls the detection switch tube T3 to follow the display screen according to the refresh frequency of the display screen. The display sustaining phase and the display switching phase are synchronously turned on or off. When the detecting switch transistor T3 is turned on, the detection signal including the electrical parameter value of the light emitting display device 11 / the organic light emitting diode D1 is sent to the processing. Device 3. That is, the processor 3 controls the detection unit 12 to be enabled and disabled correspondingly according to the display refreshing phase of the display screen and the display switching phase according to the refresh frequency of the display screen, so that the detecting unit 12 is displaying. The display of the screen is maintained during the detection phase. The electrical parameters of the corresponding light-emitting display device 11 do not detect the electrical parameters of the corresponding light-emitting display device 11 during the display switching phase of the display screen.

Specifically, the processor 3 controls to apply a conduction signal to the scan terminal T_scan during a display maintenance time of a frame display screen to control the detection switch tube T3 to continuously conduct, thereby passing the conduction detection switch. The detecting end T_test of the tube T3 acquires the detected detection signal. The processor 3 controls the detection switch tube T3 to be turned off during the switching time of the display screen, that is, the period from the end of one frame display to the start of display of the next frame display screen, and no detection is performed.

Since the data signal for driving the display of the organic light emitting diode D1 is generally maintained during the display period of the display screen of one frame, if the bending does not occur, the electrical parameters of the organic light emitting diode D1 will not change. Detecting changes in the electrical parameters of the organic light emitting diode D1 can effectively detect whether a bend has occurred. When the display screen is switched, that is, when switching from one frame display screen to another frame display screen, the data signal for driving the organic light emitting diode D1 to display will also follow the change of the display screen and have a large change. The measurement will result in inaccurate detection.

Therefore, in the present application, by not detecting during the switching time of the display screen, the false detection can be effectively avoided, and since the switching time of the display screen is small relative to the continuous display time of the display screen, it can be waited for The effect is always being detected. Moreover, since the duration of the event in which the bending occurs is much longer than the duration of one frame of the display screen, it is ensured that the bending occurs, and the bending event can be detected.

Therefore, in the present application, by detecting the change in the electrical parameters of the light-emitting display device 11, it is determined whether or not the bending occurs, and the touch unit 21 of the bending region that needs compensation is accurately known, thereby compensating the corresponding touch unit 21. , while improving the touch performance of the bending area.

As shown in FIG. 10, which is a structural block diagram of the processor 3 in an embodiment, in some embodiments, the processor 3 includes a display controller 31 and a touch controller 32, and the display controller 31 and each The scan switch tube T1 of the driving unit 13 is connected, and is used for applying a corresponding driving signal to the corresponding scan switch tube T1 according to the display data of the current display screen, so as to pass the scan switch tube T1 corresponding to the drive unit 13 and the drive switch tube. The light-emitting display device 11 corresponding to the T2 driving emits light.

The display controller 31 is electrically connected to the scan end T_scan formed by the gate of the detecting switch tube T3 of each detecting unit 12 and the detecting end T_test formed by the drain for controlling the detecting switch tube T3 to follow. Scanning signal Gn is applied to be synchronously turned on, and a detection signal is acquired through the detecting terminal T_test And determining whether the amount of change in the electrical parameter satisfies the preset condition, determining whether to bend, and determining the coordinate position at which the bending occurs when the bending is confirmed, and transmitting the coordinate position at which the bending occurs to the touch controller 32, thereby The touch controller 32 performs touch compensation on the corresponding touch unit 21.

In some embodiments, the display controller 31 and the touch controller 32 are two separate chips. The display controller 31 can be a display driver chip, and the touch controller 32 can be a touch control chip.

Obviously, in other embodiments, the processor 3 can also be an integrated chip with the functions of the display controller 31 and the functions of the touch controller 32.

Referring back to FIG. 2 , the flexible touch display device 100 further includes a memory 4 in which display data of a screen to be displayed and the aforementioned first preset threshold, second preset threshold, and the like are stored.

The processor 3 can be a central processing unit, a microcontroller, a microprocessor, a single chip microcomputer, a digital signal processor and the like integrated with display control and touch control functions.

The memory 4 can be a computer readable storage medium such as a memory card, a solid state memory, a micro hard disk, an optical disk, or the like. In some embodiments, the memory 4 stores a number of program instructions that can be executed by the processor 3 to perform the aforementioned functions.

The flexible touch display device 100 can be an AMOLED flexible display, a flexible mobile phone including an AMOLED flexible display, a tablet, a television, and the like.

Please refer to FIG. 11 , which is a flowchart of a touch compensation method according to an embodiment of the present invention. The touch compensation method is applied to the aforementioned flexible touch display device 100, and the execution order of the method is not limited to the order shown in FIG. As described above, the flexible touch display device 100 includes a plurality of arrays of light-emitting display devices 11 and a plurality of detecting units 12, each of which is connected to a light-emitting display device 11. The method includes the steps of:

A plurality of detecting units 12 respectively detect electrical parameters of each of the light-emitting display devices 11 of the flexible touch display device 100 to generate corresponding detecting signals (S91). In some embodiments, the plurality of detecting units 12 are correspondingly enabled and disabled following the display maintaining phase and the display switching phase of the display screen, and detecting the corresponding light emitting display device 11 during the display maintaining phase of the display screen. The electrical parameters do not detect the electrical parameters of the corresponding illuminated display device 11 during the display switching phase of the display.

Determining the electrical parameters of each of the light-emitting display devices 11 based on the detection signals generated by each of the detecting units 12 Whether or not a change has occurred and whether the amount of change satisfies a preset condition (S93). In some embodiments, the preset condition is that the amount of change is greater than the first preset threshold and less than the second preset threshold, and determining whether the amount of change meets the preset condition comprises: determining whether the amount of change is greater than the first pre- The threshold is set to be less than the preset threshold. If yes, it is determined that the preset condition is met, and if not, it is determined that the preset condition is not met.

When the amount of change in the electrical parameter of the at least one illuminating display device 11 satisfies the preset condition, determining that the amount of change in the electrical parameter satisfies at least one target pixel point P1 corresponding to the at least one illuminating display device 11 of the preset condition, and The at least one target pixel point P1 determines at least one target touch unit 21 that needs to be compensated (S95). Each of the pixel points P1 corresponds to one coordinate value, and each touch unit 21 corresponds to one coordinate set. The step S95 specifically includes: after determining the target pixel point P1, according to the coordinate set to which the coordinate corresponding to the target pixel point P1 belongs. It is determined that the touch unit 21 corresponding to the target pixel point P1 is a target touch unit.

Touch compensation is performed on the at least one target touch unit 21 (S97).

Please refer to FIG. 12 as a sub-flowchart of step S97 in some embodiments. In some embodiments, the step S97 includes the following steps.

The ratio of the number of target pixel points P1 included in each touch unit 21 to the number of all pixel points P1 in the touch unit 21 is determined (S971). In some embodiments, the step S971 includes: determining each touch according to a ratio of the number of coordinates of the target pixel point P1 included in each touch unit 21 to the number of coordinates in the coordinate set corresponding to the touch unit 21 The unit 21 includes a ratio of the number of target pixel points P1 to the number of all pixel points P1 in the touch unit 21.

Touch compensation is performed for each touch unit 21 in accordance with the ratio (S972).

In some embodiments, each touch unit 21 is an area in which a plurality of adjacent touch nodes J1 are connected together. The step S972 specifically includes: occupying an area of the target pixel point P1 included in a certain touch unit 21 When the ratio of the touch unit 21 exceeds a preset ratio, the touch compensation is performed on all the touch nodes J1 of the touch unit 21; and the area of the target pixel point P1 included in a certain touch unit 21 occupies the touch unit 21 When the ratio is smaller than the preset ratio, the bending center position of the touch unit 21 is determined, and the touch node J1 of the touch unit 21 close to the bending center position is compensated.

Specifically, the “determining the bending center position of the touch unit 21” includes: according to coordinates of all target pixel points P1 in the touch unit 21 and corresponding to each target pixel point P1. The amount of change in the electrical parameter of the light display device 11 determines the bending center position of the touch unit 21.

Wherein, the coordinate of the bending center position C1 is (Xc1, Yc1), and the processor 3 calculates a formula according to the X coordinate:

Calculating the X coordinate Xc1 of the bending center position C1, where x _p refers to the X coordinate of the Pth target pixel point P1 in the touch unit 21, and ΔEp refers to the illuminance corresponding to the Pth target pixel point P1 The amount of change in the electrical parameter of the display device 11 is shown.

The processor 3 calculates a formula according to the Y coordinate:

Calculating the Y coordinate Yc1 of the bending center position C1, where y _p refers to the Y coordinate of the Pth target pixel point P1 in the touch unit 21, and ΔEp refers to the illuminance corresponding to the Pth target pixel point P1 The amount of change in the electrical parameter of the display device 11 is shown.

The present invention may also provide a computer readable storage medium for storing a plurality of program instructions for use by the processor 3 to perform the steps of any of the foregoing methods.

The computer readable storage medium is the aforementioned memory 4.

Therefore, the flexible touch display device 100 and the touch compensation method of the present application determine the target pixel point P1 in the bending region by detecting the change in the electrical parameter of the light-emitting display device 11, and the target touch unit corresponding to the target pixel point P1. 21 further determining the target touch unit 21 in the bending region that needs to be compensated to compensate the target touch unit, and the touch at any position where the bending occurs can be well compensated, and the flexible touch display device 100 is bent. Touch performance under the scene.

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It is the scope of protection of the present invention.

Claims (20)

A flexible touch display device, characterized in that the flexible touch display device comprises: The flexible display panel comprises a plurality of light-emitting display devices arranged in an array and a plurality of detecting units. Each of the light-emitting display devices is electrically connected to a detecting unit, and each of the light-emitting display devices corresponds to a pixel, and each detecting unit is used for Detecting electrical parameters of the light emitting display device to generate corresponding detection signals; a flexible touch panel overlaying the flexible display panel, the flexible touch panel including a plurality of touch units, each touch unit corresponding to a plurality of pixel points; The processor is electrically connected to the detecting unit and the plurality of touch units, and is configured to receive a detection signal generated by each detecting unit, and determine, according to the detection signal generated by each detecting unit, Whether the electrical parameter of the light-emitting display device changes and whether the amount of change meets the preset condition, and when it is determined that the amount of change of the electrical parameter of the at least one light-emitting display device satisfies the preset condition, determining that the amount of change of the electrical parameter meets the preset condition At least one target pixel corresponding to the at least one illuminating display device, and determining a target touch unit that needs to be compensated according to the at least one target pixel point, and performing touch compensation on the target touch unit. The flexible touch display device according to claim 1, wherein the processor performing touch compensation on the target touch unit comprises: determining that the number of target pixel points included in each touch unit is included in the touch unit The ratio of the number of all pixels, and touch compensation for each touch unit according to the ratio. The flexible touch display device according to claim 2, wherein each touch unit is an area surrounded by a plurality of adjacent touch nodes, and the processor is used for a target pixel included in a touch unit. Controlling the touch compensation of all touch nodes of the touch unit when the ratio of the number of points to the total number of pixels included in the touch unit exceeds a preset ratio; and the number of target pixel points included in a certain touch unit accounts for Determining a bending center position of the touch unit when a ratio of the number of all the pixel points included in the touch unit is less than the preset ratio, and a distance from the bending center position of the touch unit is less than a preset distance The touch node compensates. The flexible touch display device according to claim 3, wherein the processor is configured to generate coordinates according to coordinates of all target pixel points in the touch unit and corresponding target pixel points. The amount of change in the electrical parameter of the display device is used to determine the center of the bend of the touch unit. The flexible touch display device according to claim 1, wherein each pixel point corresponds to a coordinate value, and each touch unit corresponds to one coordinate set, and after the processor determines the target pixel point, the corresponding pixel point corresponds to The coordinate unit to which the coordinate belongs belongs to determine that the touch unit corresponding to the target pixel point is the target touch unit. The flexible touch display device according to claim 1, wherein the preset condition is that the amount of change is greater than a first preset threshold and less than a second predetermined threshold, and the processor determines that the amount of change is greater than the first When the preset threshold is smaller than the second preset threshold, it is determined that the preset condition is met, and when the processor determines that the change amount is less than the first preset threshold or greater than the second preset threshold, determining that the preset condition is not met. The flexible touch display device of claim 2, wherein the flexible display panel further comprises a plurality of driving units, each driving unit being electrically connected to a light emitting display device for driving the display of the light emitting display device The processor is connected to the plurality of driving units, and is configured to apply a corresponding driving signal to the corresponding driving unit according to the display data of the current display screen, so as to drive the corresponding light emitting display device to emit light through the corresponding driving unit. The plurality of light emitting display devices arranged in an array emit corresponding lights to form corresponding display images. The flexible touch display device of claim 7, wherein each of the driving units comprises a scan switch tube and a drive switch tube, the drive switch tube being electrically connected to a driving power source, the scan switch tube and corresponding light emitting Between the display devices, a storage capacitor is connected between the source and the gate of the drive switch, and the processor is electrically connected to the scan switch tube, and the drive signal is applied through the scan switch tube. The flexible touch display device of claim 8, wherein the light emitting display device comprises an organic light emitting diode, the detecting unit comprises a detecting switch tube, and the source of the detecting switch tube is The positive electrode of the organic light emitting diode is electrically connected, the drain of the detecting switch tube constitutes a detecting end, the gate of the detecting switch tube constitutes a scanning end, and the detecting end and the scanning end are electrically connected to the processor The processor controls the detection switch to follow the display maintenance phase and the display switching phase of the display screen to be turned on or off according to the refresh frequency of the display screen. When the detection switch is turned on, the detection switch tube includes A detection signal of an electrical parameter value of the illuminating display device is transmitted to the processor. The flexible touch display device according to claim 9, wherein said processor controls to apply a conduction signal to said scanning end to control said detection during a display maintenance time of a frame display screen The detecting switch tube is continuously turned on, so that the detected detecting signal is obtained through the detecting end of the conductive detecting switch tube; and the processor controls the detecting during the switching time of the display screen. The switch is turned off and no detection is performed. The flexible touch display device of claim 2, wherein each pixel point corresponds to a coordinate value, each touch unit corresponds to a coordinate set, and the processor according to the coordinates of the target pixel point included in each touch unit The ratio of the number of coordinates to the number of coordinates in the coordinate set corresponding to the touch unit determines the ratio of the number of target pixel points included in each touch unit to the number of all pixel points included in the touch unit. A touch compensation method is applied to a flexible touch display device, wherein the flexible touch display device comprises a plurality of arrayed light emitting display devices and a plurality of detecting units, each detecting unit corresponding to a light emitting display device Connecting; the touch compensation method includes the steps of: Detecting electrical parameters of each of the light-emitting display devices of the flexible touch display device by using a plurality of detecting units to generate corresponding detecting signals; Determining, according to the detection signal generated by each detecting unit, whether the electrical parameter of each of the light emitting display devices changes and determining whether the amount of change meets a preset condition; Determining, according to the at least one target pixel point corresponding to the at least one light-emitting display device that the amount of change in the electrical parameter meets the preset condition, when determining that the amount of change in the electrical parameter of the at least one light-emitting display device satisfies the preset condition, and according to the at least one A target pixel determines at least one target touch unit that needs to be compensated; Touch compensation is performed on the at least one target touch unit. The touch compensation method according to claim 12, wherein the "touch compensation for the at least one target touch unit" comprises: Determining a ratio of the number of target pixel points included in each touch unit to the number of all pixel points included in the touch unit; Touch compensation is performed for each touch unit according to the ratio. The touch compensation method according to claim 13, wherein each touch unit is an area in which a plurality of adjacent touch nodes are connected together, and the touch compensation is performed on each touch unit according to the ratio. "include: The number of target pixel points included in a certain touch unit occupies all the images included in the touch unit Controlling touch compensation for all touch nodes of the touch unit when the ratio of the number of prime points exceeds a preset ratio; Determining a bending center position of the touch unit when the ratio of the number of target pixel points included in a touch unit to the number of all pixel points included in the touch unit is less than the preset ratio The touch node with the distance from the center of the bend is less than the preset distance to compensate. The touch compensation method according to claim 14, wherein the "determining the bending center position of the touch unit" comprises: Determining a bending center position of the touch unit according to coordinates of all target pixel points in the touch unit and an electrical parameter change amount of the light emitting display device corresponding to each target pixel point. The touch compensation method according to claim 15, wherein said step "will according to the coordinates of all target pixel points in said touch unit and the amount of change in electrical parameters of the light-emitting display device corresponding to each target pixel point. Determining the bending center position of the touch unit" includes: Calculate the formula according to the X coordinate:

Calculate the X coordinate Xc1 of the bending center position and calculate the formula according to the Y coordinate:

Calculating a Y coordinate Yc1 of the bending center position, where x _p refers to the X coordinate of the Pth target pixel point in the touch unit 21, and y _p refers to the Pth target pixel in the touch unit The Y coordinate of the point, ΔEp refers to the amount of change in the electrical parameter of the light-emitting display device corresponding to the Pth target pixel. The touch compensation method according to claim 12, wherein the step of "detecting electrical parameters of each of the light-emitting display devices of the flexible touch display device by the plurality of detecting units to generate corresponding detection signals" includes: The plurality of detecting units are correspondingly enabled and disabled according to the display maintaining phase and the display switching phase of the display screen, and detecting the electrical parameters of the corresponding light emitting display device during the display maintaining phase of the display screen, in the display screen The display switching phase does not detect the electrical parameters of the corresponding illuminated display device. The touch compensation method according to claim 12, wherein each pixel point corresponds to a coordinate value, and each touch unit corresponds to a coordinate set, and the “determining at least one compensation according to the at least one target pixel point is determined. A target touch unit" includes: After the target pixel is determined, the touch unit corresponding to the target pixel is determined to be the target touch unit according to the coordinate set to which the coordinate corresponding to the target pixel belongs. The touch compensation method according to claim 12, wherein the preset condition is that the amount of change is greater than a first preset threshold and less than a second preset threshold, and the “determining whether the amount of change meets a preset condition” "include: It is determined whether the amount of change is greater than the first preset threshold and less than the preset threshold. If yes, it is determined that the preset condition is met, and if not, it is determined that the preset condition is not met. The touch compensation method according to claim 13, wherein each pixel point corresponds to one coordinate value, and each touch unit corresponds to one coordinate set, and the “determining the number of target pixel points included in each touch unit accounts for The ratio of the number of all pixels included in the touch unit" includes: Determining, according to the ratio of the number of coordinates of the target pixel point included in each touch unit to the number of coordinates in the coordinate set corresponding to the touch unit, the number of target pixel points included in each touch unit is included in the touch unit The ratio of the number of all pixels.

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