Display screen, scrolling display device and touch driving method thereof

Abstract

The present invention provides a display screen comprising a first portion and a second portion, wherein the display surface of the first portion is always exposed during display, and the display surface of the second portion is non-exposed during at least part of the display period; the display screen further comprises a contact touch structure distributed at least on the display surface of the first portion; and the display screen further comprises a non-contact touch structure distributed at least on the display surface of the second portion. By providing the contact touch structure on at least the display surface of the first portion and the non-contact touch structure on at least the display surface of the second portion, the display screen can achieve touch operation on the entire display screen in both the exposed and non-exposed states.

Description

Technical Field

[0001] The present invention belongs to the field of display technology, and in particular relates to a display screen, a scrolling display device and a touch driving method thereof. Background Art

[0002] Currently, scroll-type touch display devices are widely used and are highly favored by people.

[0003] The sliding touch display device not only requires that the screen can display and touch normally after sliding out, but also that the screen on the back of the entire device can display and touch after part of the screen is rolled into the shell on the back of the entire device. The commonly used method is to use a transparent cover plate on the back cover of the entire device to enable display and touch on the screen on the back of the entire device.

[0004] However, in order to ensure that the screen does not interfere with the cover during sliding, a certain gap will be left between the cover and the screen. This makes it difficult for the traditional mutual capacitance touch layer (such as FMLOC) set on the screen display side to realize the touch function. Summary of the Invention

[0005] To address the aforementioned issues, the present invention provides a display screen, a scrolling display device, and a touch-sensitive driving method thereof. By providing a contact touch structure on at least a first portion of the display surface and a non-contact touch structure on at least a second portion of the display surface, the display screen can achieve touch operation on the entire display screen in both exposed and non-exposed states.

[0006] The present invention provides a display screen, comprising a first portion and a second portion, wherein the display surface of the first portion is always in an exposed state during display, and the display surface of the second portion is in a non-exposed state during at least a portion of the display period;

[0007] The display screen further includes a contact touch structure, which is distributed at least on the display surface of the first part;

[0008] The display screen further includes a non-contact touch structure, which is distributed at least on the display surface of the second part.

[0009] Optionally, the contact touch structure is distributed on the display surfaces of the first part and the second part;

[0010] The non-contact touch structure is distributed on the display surface of the second part;

[0011] The orthographic projections of the contact touch structure and the non-contact touch structure on the display surface of the second portion do not overlap.

[0012] Optionally, the display surfaces of the first portion and the second portion include a plurality of pixel areas, and the plurality of pixel areas are arranged in an array;

[0013] A plurality of sub-pixels are distributed in each pixel area, and the plurality of sub-pixels are arranged at intervals from each other;

[0014] The non-contact touch structure includes multiple first substructures, and the orthographic projections of the multiple first substructures on the display surface are respectively distributed one-to-one in the multiple pixel areas of the second part, and the orthographic projections of the first substructures on the display surface are located in the spacing area formed by the multiple sub-pixels in the pixel area.

[0015] Optionally, the orthographic projection of the contact touch structure on the display surface is distributed in the spacing area between adjacent pixel areas.

[0016] Optionally, the first substructure includes a first electrode, a pyroelectric layer, and a second electrode, wherein the first electrode, the pyroelectric layer, and the second electrode are stacked in sequence in a direction away from the display surface;

[0017] The orthographic projection of the pyroelectric layer on the display surface overlaps with the orthographic projections of the first electrode and the second electrode on the display surface.

[0018] Optionally, the first electrode, the pyroelectric layer and the second electrode are all planar.

[0019] Optionally, the orthographic projection shapes of the first electrode, the pyroelectric layer and the second electrode on the display surface are all “X”-shaped.

[0020] Optionally, the plurality of first substructures are arranged in an array, the first electrodes in each row are connected in series via a first connecting line; and the second electrodes in each column are connected in series via a second connecting line.

[0021] The first connecting line and the first electrode are located on the same film layer; the second connecting line and the second electrode are located on the same film layer;

[0022] The first connecting line and the second connecting line extend from a spacing area between adjacent sub-pixels to a spacing area between adjacent pixel areas, respectively.

[0023] Optionally, the contact touch structure includes a bridge electrode, an insulating dielectric layer and a touch electrode layer; the bridge electrode, the insulating dielectric layer and the touch electrode layer are sequentially arranged in a direction away from the display surface;

[0024] The touch electrode layer includes a plurality of driving electrodes and a plurality of sensing electrodes, and the orthographic projections of the plurality of driving electrodes and the plurality of sensing electrodes on the display surface do not overlap;

[0025] The plurality of driving electrodes are arranged in an array, and the driving electrodes in each column are connected in series via a first connecting portion; the plurality of sensing electrodes are arranged in an array, and the sensing electrodes in each row are connected in series via the bridge electrode; the first connecting portion and the bridge electrode are spatially intersected and insulated;

[0026] The bridge electrode and the first electrode are located on the same film layer; the touch electrode layer and the second electrode are located on the same film layer.

[0027] Optionally, the first connection portion located on the display surface of the second portion can be reused as the second connection line;

[0028] The driving electrodes and the sensing electrodes are respectively arranged around the periphery of different pixel areas;

[0029] The second electrodes corresponding to the pixel areas surrounded by a row of the driving electrodes are connected to the driving electrodes.

[0030] Optionally, it further includes a first driving circuit and a second driving circuit;

[0031] The first connecting line and the second connecting line are connected to the first driving circuit through a first lead and a second lead respectively;

[0032] The bridge electrode and the first connection portion are connected to the second driving circuit through a third lead and a fourth lead, respectively.

[0033] Optionally, the third lead may be reused as the first lead;

[0034] The fourth lead may be reused as the second lead.

[0035] The present invention also provides a sliding display device, comprising a sliding mechanism and a cover plate, wherein the sliding mechanism comprises a front surface and a back surface, and further comprises the above-mentioned display screen.

[0036] The display screen is arranged on the sliding mechanism, and the first portion of the display screen is flattened on the front of the sliding mechanism, and the display surface of the first portion is exposed; the second portion of the display screen can be flattened on the front or back of the sliding mechanism as the sliding mechanism slides;

[0037] The cover plate covers the back side of the sliding and rolling mechanism, and a gap is formed between the cover plate and the second portion flattened on the back side of the sliding and rolling mechanism.

[0038] Optionally, the gap between the cover plate and the second part is less than or equal to 5 cm.

[0039] The present invention also provides a touch driving method for the above-mentioned scrolling display device, comprising: always performing contact touch driving on the first part of the display screen;

[0040] For the second part of the display screen, performing contact touch driving on the second part flattened on the front of the sliding mechanism;

[0041] The second portion flattened on the back of the sliding mechanism is driven by non-contact touch.

[0042] Beneficial effects of the present invention: The display screen provided by the present invention can realize contact touch operation on the first part by arranging a contact touch structure on the display surface of at least the first part; by arranging a non-contact touch structure on the display surface of at least the second part, when the second part is in a non-exposed state and the second part cannot be touched by the contact touch structure, the non-contact touch operation on the second part can be realized by the non-contact touch structure; thereby ensuring that the entire display screen can realize touch operation in either the exposed or non-exposed state.

[0043] The scrolling display device provided by the embodiment of the present invention, by adopting the above-mentioned display screen, can realize contact touch control on the first portion of the display screen that is flattened and exposed on the front of the scrolling mechanism, contact touch control on part or all of the second portion of the display screen that is flattened and exposed on the front of the scrolling mechanism, and non-contact touch control on part or all of the second portion of the display screen that is flattened and not exposed on the back of the scrolling mechanism, thereby ensuring that the entire display screen in the scrolling display device can realize touch operation in either the exposed or non-exposed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic top view of a partial structure of the second part of the display screen in an embodiment of the present invention;

[0045] Figure 2 is a schematic cross-sectional view of the structure of the first substructure in an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the touch sensing principle of the first substructure in an embodiment of the present invention;

[0047] Figure 4 is a graph showing the relationship between the touch sensing sensitivity of the first substructure and the ambient temperature difference in an embodiment of the present invention;

[0048] Figure 5 1 is a schematic top view of another partial structure of the second part of the display screen in an embodiment of the present invention;

[0049] Figure 6 For the Figure 5 Schematic diagram of the structural section along the AA section line;

[0050] Figure 72 is a schematic side view of the structure of a scrolling display device according to an embodiment of the present invention;

[0051] Figure 8 Schematic diagram of the gap between the cover plate and the second part of the display screen in an embodiment of the present invention.

[0052] The accompanying drawings are as follows:

[0053] 1. Contact touch structure; 11. Bridge electrode; 12. Insulating medium; 13. Touch electrode layer; 131. Drive electrode; 132. Sensing electrode; 133. First connecting part; 2. Non-contact touch structure; 21. First substructure; 211. First electrode; 212. Pyroelectric layer; 213. Second electrode; 100. Second part; 101. Pixel area; 102. Sub-pixel; 103. Red sub-pixel; 104. Blue sub-pixel; 105. Green sub-pixel; 3. First connecting line; 4. Second connecting line; 5. Sliding mechanism; 51. Front side; 52. Back side; 6. Cover plate; 7. Display screen; 71. First part. DETAILED DESCRIPTION

[0054] In order to enable those skilled in the art to better understand the technical solution of the present invention, a display screen, a scrolling display device and a touch driving method thereof of the present invention are further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] In order to solve the problem that there is a gap between the cover plate and the screen, which makes it impossible for the screen mutual capacitance touch layer to realize the touch function well, an embodiment of the present invention provides a display screen, including a first part and a second part, the display surface of the first part is always in an exposed state during display, and the display surface of the second part is in a non-exposed state for at least part of the time during display; the display screen also includes a contact touch structure, which is distributed on at least the display surface of the first part; the display screen also includes a non-contact touch structure, which is distributed on at least the display surface of the second part.

[0056] Among them, since the first part is always in an exposed state, a touch operation on the first part can be achieved by setting a contact touch structure on the display surface of the first part; since the second part is in a non-exposed state for at least part of the time, a non-contact touch structure is set on the display surface of the second part. When the second part is in a non-exposed state and the second part cannot be touched by the contact touch structure, the touch operation on the second part can be achieved by the non-contact touch structure; thereby ensuring that the entire display screen can achieve touch operation in either the exposed or non-exposed state.

[0057] It should be noted that a non-contact touch structure can also be set on the display surface of the first part, and a contact touch structure can also be set on the display surface of the second part, so that the first part and the second part can respectively realize dual touch operation through the contact touch structure and the non-contact touch structure.

[0058] Optionally, in this embodiment, if Figure 1 As shown, the contact touch structure 1 is distributed on the display surface of the first part (not shown) and the second part 100; the non-contact touch structure 2 is distributed on the display surface of the second part 100; the orthographic projections of the contact touch structure 1 and the non-contact touch structure 2 on the display surface of the second part 100 do not overlap. This enables independent touch operations of the contact touch structure 1 and the non-contact touch structure 2.

[0059] Alternatively, as Figure 1 The display surfaces of the first and second parts 100 include a plurality of pixel areas 101, which are arranged in an array; a plurality of sub-pixels 102 are distributed in each pixel area 101, and the plurality of sub-pixels 102 are arranged at intervals from each other; the non-contact touch structure 2 includes a plurality of first substructures 21, and the orthographic projections of the plurality of first substructures 21 on the display surface are distributed one-to-one in the plurality of pixel areas 101 of the second part 100, and the orthographic projections of the first substructures 21 on the display surface are located in the interval area formed by the plurality of sub-pixels 102 in the pixel area 101.

[0060] Alternatively, as Figure 1 The orthographic projection of the contact-type touch structure 1 on the display surface is distributed in the interval area between adjacent pixel areas 101 .

[0061] Optionally, the sub-pixel 102 can adopt an organic electroluminescent element (i.e., OLED) or a quantum dot light-emitting diode (i.e., QLED), and there are four sub-pixels 102 distributed in each pixel area 101, namely, one red sub-pixel 103 and one blue sub-pixel 104, and two green sub-pixels 105. The shape of the light-emitting surface of the sub-pixel 102 is rectangular or diamond-shaped; the shape of the pixel area 101 is rectangular or diamond-shaped. Optionally, the shape of the light-emitting surface of the sub-pixel 102 can also be any other shape, and the shape of the pixel area 101 can also be any other shape. Optionally, there is no limit on the number of sub-pixels 102 distributed in each pixel area 101; there is no limit on the arrangement of multiple sub-pixels 102 in the pixel area 101.

[0062] In this embodiment, by distributing the first substructure 21 in the spacing regions formed by the plurality of sub-pixels 102 within the pixel region 101, the first substructure 21 can be prevented from blocking the light emitted by the sub-pixels 102, ensuring that each sub-pixel 102 can emit light and display normally. By distributing the contact touch structure 1 in the spacing regions between adjacent pixel regions 101, the contact touch structure 1 can be prevented from blocking the light emitted by the sub-pixels 102, ensuring that each pixel region 101 can emit light and display normally.

[0063] Alternatively, as Figure 2 As shown, the first substructure 21 includes a first electrode 211, a pyroelectric layer 212 and a second electrode 213. The first electrode 211, the pyroelectric layer 212 and the second electrode 213 are stacked in sequence in a direction away from the display surface; the orthographic projection of the pyroelectric layer 212 on the display surface overlaps with the orthographic projection of the first electrode 211 and the second electrode 213 on the display surface.

[0064] Optionally, the first electrode 211, the pyroelectric layer 212 and the second electrode 213 are all planar. The thickness of the pyroelectric layer 212 is 20 μm.

[0065] Optionally, the first electrode 211 and the second electrode 213 are made of indium tin oxide (ITO) material, and the pyroelectric layer 212 is made of polyvinylidene fluoride (PVDF) material. PVDF is a highly non-reactive thermoplastic fluorinated polymer. The touch sensing principle of the first substructure 21 is as follows: Figure 3 As shown, when the ambient temperature within a distance of approximately 5 cm near the pyroelectric layer 212 material sensing area changes, its surface spontaneous polarization changes accordingly. The free charges on the ITO layer surfaces of the first electrode 211 and the second electrode 213 cannot neutralize the change in bound charges in a timely manner. In a relatively short period of time, there are certain charges on the material surface that are not neutralized in time, thereby generating a voltage change. The voltage signal change is collected and output by the signal board. The signal can be used to sense a touch object such as a touching finger within a distance of approximately 5 cm from the surface of the pyroelectric layer 212 material that can cause a change in the ambient temperature, thereby realizing non-contact touch sensing of the touch object (such as a finger) by the first substructure 21.

[0066] The detection sensitivity of the pyroelectric layer 212 in the first substructure 21 is proportional to the ambient temperature difference, such as Figure 4 As shown, as the heating rate increases, the detection voltage signal between the upper and lower electrodes in the first substructure 21 increases linearly. Based on this theory, by improving the heat absorption efficiency of the pyroelectric layer 212 itself, the detection voltage signal value can be increased, thereby improving the detection sensitivity.

[0067] Optionally, the orthographic projections of the first electrode 211, the pyroelectric layer 212, and the second electrode 213 on the display surface are all in an "X" shape. Setting the overlapping area of ​​the orthographic projections of the first electrode 211, the pyroelectric layer 212, and the second electrode 213 in an "X" shape can maximize the effective area of ​​the pyroelectric layer 212. Since the touch sensing efficiency of the first substructure 21 is positively correlated with the effective area of ​​the pyroelectric layer 212, the "X" shape can improve the touch sensing efficiency of the first substructure 21.

[0068] Alternatively, as Figure 5 and Figure 6 As shown, multiple first substructures 21 are arranged in an array, and each row of first electrodes 211 is connected in series through a first connecting line 3; each column of second electrodes 213 is connected in series through a second connecting line 4; the first connecting line 3 and the first electrode 211 are located on the same film layer; the second connecting line 4 and the second electrode 213 are located on the same film layer; the first connecting line 3 and the second connecting line 4 extend from the spacing area between adjacent sub-pixels 102 to the spacing area between adjacent pixel areas 101, respectively.

[0069] By distributing the first connecting lines 3 and the second connecting lines 4 in the spacing regions between adjacent sub-pixels 102 and the spacing regions between adjacent pixel regions 101, the first connecting lines 3 and the second connecting lines 4 can be prevented from blocking the light emitted by the sub-pixels 102, ensuring that each sub-pixel 102 and the pixel region 101 can emit light and display normally. By locating the first connecting lines 3 and the first electrode 211 on the same film layer, they can be formed through a single patterning process; by locating the second connecting lines 4 and the second electrode 213 on the same film layer, they can be formed through a single patterning process, simplifying the display screen manufacturing process.

[0070] Optionally, the display screen further includes a first drive circuit (not shown); the first connecting wire 3 and the second connecting wire 4 are connected to the first drive circuit via a first lead and a second lead (not shown), respectively. The first drive circuit is a touch driver chip (i.e., an IC) of the contactless touch structure 2.

[0071] In this embodiment, the first substructure 21 array is configured such that each row of first electrodes 211 is connected through a first connecting line 3 and connected to a first driving circuit through a first lead, and each column of second electrodes 213 is connected through a second connecting line 4 and connected to the first driving circuit through a second lead. When one or several first substructures 21 sense finger touch, the sensed temperature change is converted into a voltage signal and outputted separately. The first driving circuit can obtain the touch position of the finger on the display screen based on the row position and column position of the first substructure 21 that outputs the voltage signal, thereby realizing the touch operation of the finger on the display screen.

[0072] It should be noted that when the first substructure 21 senses the touch of a finger, the finger and the first substructure 21 do not need to be in direct contact, and a gap of less than or equal to 5 cm between the two can be sensed, thereby realizing touch sensing of the touch object by the non-contact touch structure 2.

[0073] Alternatively, as Figure 5 and Figure 6 As shown, the contact touch structure 1 includes a bridge electrode 11, an insulating dielectric layer 12, and a touch electrode layer 13. The bridge electrode 11, insulating dielectric layer 12, and touch electrode layer 13 are arranged in sequence in a direction away from the display surface. The touch electrode layer 13 includes a plurality of drive electrodes 131 and a plurality of sensing electrodes 132. The orthographic projections of the plurality of drive electrodes 131 and the plurality of sensing electrodes 132 on the display surface do not overlap. The plurality of drive electrodes 131 are arranged in an array, with each column of drive electrodes 131 connected in series via a first connecting portion 133. The plurality of sensing electrodes 132 are arranged in an array, with each row of sensing electrodes 132 connected in series via the bridge electrode 11. The first connecting portion 133 spatially intersects and is insulated from the bridge electrode 11. The bridge electrode 11 and the first electrode 211 are located on the same film layer. The touch electrode layer 13 and the second electrode 213 are located on the same film layer.

[0074] Among them, by locating the bridge electrode 11 and the first electrode 211 on the same film layer, both can be prepared and formed through a single patterning process; by locating the touch electrode layer 13 and the second electrode 213 on the same film layer, both can be prepared and formed through a single patterning process; thereby simplifying the preparation process of the display screen.

[0075] Optionally, the driving electrodes 131 and the sensing electrodes 132 are both grid-shaped electrodes, which can improve the display light transmittance of the display screen, thereby improving the display contrast and display effect of the display screen.

[0076] Optionally, two adjacent pixel regions in a row and two adjacent pixel regions in a column at the intersection of rows and columns are arranged in a diamond shape; the touch electrode layer distributed in the space between the two adjacent pixel regions in a row and the touch electrode layer distributed in the space between the two adjacent pixel regions in a column are connected together as a driving electrode block or a sensing electrode block. A first substructure 21 is provided in each pixel region.

[0077] Optionally, the display screen further includes a second drive circuit (not shown in the figure); the bridge electrode 11 and the first connecting portion 133 are connected to the second drive circuit via a third lead and a fourth lead (not shown in the figure), respectively. The second drive circuit is a touch driver chip (i.e., IC) of the contact touch structure 1. The contact touch structure 1 of the above structure can realize mutual capacitance touch on the display screen. The contact touch structure 1 is directly prepared on the display surface of the display screen, thereby realizing an FMLOC (Flexible Multi-Layer On Cell) touch display screen, which can reduce the thickness of the display screen and has better touch performance than an external touch screen.

[0078] Optionally, the first connection portion 133 located on the display surface of the second portion can be reused as the second connection line 4. The drive electrodes 131 and the sensing electrodes 132 are respectively disposed around different pixel regions 101. In the distribution of the touch electrode layer 13, for a column of drive electrodes 131, the second electrode 213 located within the pixel region 101 surrounded by the column of drive electrodes 131 is connected to the drive electrode 131. The first connection portion 133 can only be reused as the second connection line 4 when the contact touch structure 1 and the non-contact touch structure 2 disposed on the display surface of the second portion 100 are used alternately at a time. If both the contact touch structure 1 and the non-contact touch structure 2 are used simultaneously on the display surface of the second portion 100, the first connection portion 133 cannot be reused as the second connection line 4. In this case, the first connection portion 133 and the second connection line 4 must be disposed separately to achieve the simultaneous use of the contact touch structure 1 and the non-contact touch structure 2.

[0079] Optionally, in the distribution of the touch electrode layer 13, for a distribution in which an entire column includes both driving electrodes 131 and sensing electrodes 132, or a distribution in which an entire column includes only sensing electrodes 132, the second electrodes 213 corresponding to the pixel area 101 enclosed by the sensing electrodes 132 and / or driving electrodes 131 in that column are not connected to the sensing electrodes 132 and / or driving electrodes 131. The second electrodes 213 corresponding to the pixel area 101 enclosed by the sensing electrodes 132 and / or driving electrodes 131 in that column are connected in series via second connecting wires 4; these second connecting wires 4 require jumpers at their intersections with the sensing electrodes 132 and the driving electrodes 131 to ensure insulation between the second connecting wires 4 and the sensing electrodes 132 and the driving electrodes 131.

[0080] Optionally, in the distribution of the touch electrode layer 13, for a distribution in which an entire column includes both driving electrodes 131 and sensing electrodes 132, or a distribution in which an entire column includes only sensing electrodes 132, a corresponding column of second electrodes 213 located within the pixel area 101 enclosed by the column of sensing electrodes 132 and / or driving electrodes 131 may be left floating, that is, the column of second electrodes 213 is not connected to the first driving circuit.

[0081] Optionally, in the distribution of the touch electrode layer 13, for a distribution in which an entire column includes both driving electrodes 131 and sensing electrodes 132, or a distribution in which an entire column includes only sensing electrodes 132, the first substructure 21 may not be provided within the pixel area 101 enclosed by the column of sensing electrodes 132 and / or driving electrodes 131. This configuration substantially does not affect the non-contact touch function of the non-contact touch structure 2.

[0082] Optionally, the third lead can be reused as the first lead, and the fourth lead can be reused as the second lead. Specifically, when the contact touch structure 1 and the non-contact touch structure 2 disposed on the display surface of the second portion 100 are used alternately at a time-sharing basis, the third lead can be reused as the first lead, and the fourth lead can be reused as the second lead. If the contact touch structure 1 and the non-contact touch structure 2 disposed on the display surface of the second portion 100 are used simultaneously, the third lead cannot be reused as the first lead, and the fourth lead cannot be reused as the second lead. In this case, the first, second, third, and fourth leads must be provided separately to achieve the simultaneous use of the contact touch structure 1 and the non-contact touch structure 2.

[0083] The display screen provided in this embodiment can realize contact touch operation on the first part by providing a contact touch structure on the display surface of at least the first part; by providing a non-contact touch structure on the display surface of at least the second part, when the second part is in a non-exposed state and the second part cannot be touched by the contact touch structure, the non-contact touch operation on the second part can be realized by the non-contact touch structure; thereby ensuring that the entire display screen can realize touch operation in either the exposed or non-exposed state.

[0084] The embodiment of the present invention further provides a scrolling display device, such as Figure 7 and Figure 8 As shown, it includes a sliding mechanism 5 and a cover plate 6. The sliding mechanism 5 includes a front side 51 and a back side 52, and also includes the display screen 7 in the above embodiment. The display screen 7 is arranged on the sliding mechanism 5. The first portion 71 of the display screen 7 is flattened on the front side 51 of the sliding mechanism 5, and the display surface of the first portion 71 is exposed; the second portion 100 of the display screen 7 can be flattened on the front side 51 or the back side 52 of the sliding mechanism 5 as the sliding mechanism 5 slides; the cover plate 6 covers the back side 52 of the sliding mechanism 5, and a gap s is formed between the cover plate 6 and the second portion 100 flattened on the back side 52 of the sliding mechanism 5.

[0085] Optionally, the gap s between the cover plate 6 and the second portion 100 is less than or equal to 5 cm. The cover plate 6 is transparent so that the display screen 7 can be viewed through the cover plate 6. The non-contact touch structure in the display screen 7 can accurately sense touches by objects within the gap size range, thereby enabling non-contact touch control of the second portion 100 that is not exposed and is obscured by the cover plate 6.

[0086] Based on the above structure of the scrolling display device, this embodiment further provides a touch driving method for the scrolling display device, comprising: always performing contact touch driving on the first portion of the display screen; for the second portion of the display screen, performing contact touch driving on the second portion flattened on the front side of the scrolling mechanism; and performing non-contact touch driving on the second portion flattened on the back side of the scrolling mechanism.

[0087] The scrolling display device in this embodiment, by adopting the display screen in the above-mentioned embodiment, can realize contact touch control on the first portion of the display screen that is flattened on the front of the scrolling mechanism and exposed, contact touch control on part or all of the second portion of the display screen that is flattened on the front of the scrolling mechanism and exposed, and non-contact touch control on part or all of the second portion of the display screen that is flattened on the back of the scrolling mechanism and not exposed, thereby ensuring that the entire display screen in the scrolling display device can realize touch operation in either the exposed or non-exposed state.

[0088] The scrolling display device provided by the present invention can be any product or component with a display function, such as an OLED panel, an OLED TV, an OLED billboard, a display, a mobile phone, a navigator, or the like.

[0089] It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A display screen comprising a first portion and a second portion, wherein the display surface of the first portion is always exposed during display, and the display surface of the second portion is non-exposed during at least part of the display period; The display screen further includes a contact touch structure, which is distributed at least on the display surface of the first part; It is characterized by: The display screen further includes a non-contact touch structure, which is distributed at least on the display surface of the second part; The display surfaces of the first portion and the second portion include a plurality of pixel areas, and the plurality of pixel areas are arranged in an array; A plurality of sub-pixels are distributed in each pixel area, and the plurality of sub-pixels are arranged at intervals from each other; The non-contact touch structure includes a plurality of first substructures, wherein the orthographic projections of the plurality of first substructures on the display surface are respectively distributed in the plurality of pixel areas of the second portion in a one-to-one correspondence, and the orthographic projections of the first substructures on the display surface are located in the spacing areas formed by the plurality of sub-pixels in the pixel areas; The first substructure includes a first electrode, a pyroelectric layer, and a second electrode, wherein the first electrode, the pyroelectric layer, and the second electrode are stacked in sequence in a direction away from the display surface; The orthographic projection of the pyroelectric layer on the display surface overlaps with the orthographic projections of the first electrode and the second electrode on the display surface; The plurality of first substructures are arranged in an array, the first electrodes in each row are connected in series via a first connecting line; and the second electrodes in each column are connected in series via a second connecting line; The first connecting line and the first electrode are located on the same film layer; the second connecting line and the second electrode are located on the same film layer; The first connecting line and the second connecting line extend from a spacing area between adjacent sub-pixels to a spacing area between adjacent pixel areas, respectively.

2. The display screen according to claim 1, wherein: The contact touch structure is distributed on the display surfaces of the first part and the second part; The non-contact touch structure is distributed on the display surface of the second part; The orthographic projections of the contact touch structure and the non-contact touch structure on the display surface of the second portion do not overlap.

3. The display screen according to claim 2, wherein: The orthographic projection of the contact touch structure on the display surface is distributed in the spacing area between adjacent pixel areas.

4. The display screen according to claim 1, wherein: The first electrode, the pyroelectric layer and the second electrode are all planar.

5. The display screen according to claim 1, wherein: The orthographic projection shapes of the first electrode, the pyroelectric layer and the second electrode on the display surface are all "X"-shaped.

6. The display screen according to claim 3, wherein: The contact touch structure includes a bridge electrode, an insulating dielectric layer and a touch electrode layer; the bridge electrode, the insulating dielectric layer and the touch electrode layer are arranged in sequence in a direction away from the display surface; The touch electrode layer includes a plurality of driving electrodes and a plurality of sensing electrodes, and the orthographic projections of the plurality of driving electrodes and the plurality of sensing electrodes on the display surface do not overlap; The plurality of driving electrodes are arranged in an array, and the driving electrodes in each column are connected in series via a first connecting portion; the plurality of sensing electrodes are arranged in an array, and the sensing electrodes in each row are connected in series via the bridge electrode; the first connecting portion and the bridge electrode are spatially intersected and insulated; The bridge electrode and the first electrode are located on the same film layer; the touch electrode layer and the second electrode are located on the same film layer.

7. The display screen according to claim 6, characterized in that The first connection portion located on the display surface of the second portion can be reused as the second connection line; The driving electrodes and the sensing electrodes are respectively arranged around the periphery of different pixel areas; The second electrodes corresponding to the pixel areas surrounded by a row of the driving electrodes are connected to the driving electrodes.

8. The display screen according to claim 7, characterized in that Also includes a first drive circuit and a second drive circuit; The first connecting line and the second connecting line are connected to the first driving circuit through a first lead and a second lead respectively; The bridge electrode and the first connection portion are connected to the second driving circuit through a third lead and a fourth lead, respectively.

9. The display screen according to claim 8, characterized in that The third lead can be reused as the first lead; The fourth lead may be reused as the second lead.

10. A scrolling display device, comprising a scrolling mechanism and a cover plate, wherein the scrolling mechanism comprises a front surface and a back surface, and is characterized in that: Also includes the display screen according to any one of claims 1 to 9, The display screen is arranged on the sliding mechanism, and the first portion of the display screen is flattened on the front of the sliding mechanism, and the display surface of the first portion is exposed; the second portion of the display screen can be flattened on the front or back of the sliding mechanism as the sliding mechanism slides; The cover plate covers the back side of the sliding and rolling mechanism, and a gap is formed between the cover plate and the second portion flattened on the back side of the sliding and rolling mechanism.

11. The scroll display device according to claim 10, characterized in that: A gap size between the cover plate and the second portion is less than or equal to 5 cm.

12. A touch control driving method for a scrolling display device according to claim 10 or 11, characterized in that: include: The first portion of the display screen is always contact-touch driven; For the second part of the display screen, performing contact touch driving on the second part flattened on the front of the sliding mechanism; The second portion flattened on the back of the sliding mechanism is driven by non-contact touch.

Images