US20200363889A1 - Touch panel and led display - Google Patents
Touch panel and led display Download PDFInfo
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- US20200363889A1 US20200363889A1 US16/632,294 US201716632294A US2020363889A1 US 20200363889 A1 US20200363889 A1 US 20200363889A1 US 201716632294 A US201716632294 A US 201716632294A US 2020363889 A1 US2020363889 A1 US 2020363889A1
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Classifications
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
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- G—PHYSICS
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
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- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
Definitions
- the present application relates to the technical field of touch display, and more particularly to a touch panel and an LED display screen.
- the existing capacitance-type touch technology is merely applicable to small-sized display screens, while regarding display for conference, display for television program, display for exhibition and other occasions, large-sized touch screens are usually required, that is, the existing capacitance-type touch technology could not be able to satisfy the increasing demand for large-sized touch display. It thus is expected urgently to provide a capacitance-type touch technology that can be applied to a large-sized display screen.
- An embodiment of the present application provides a touch panel and an LED display screen, which are applicable to large-sized display screens and implements the function of touch display for the large-sized display screen, and have the advantages of low production cost and simple processing technology.
- An aspect of the embodiment of the present application provides a touch panel, which includes at least one touch-sensing layer, at least one pixel lamp spacer layer and at least one dielectric substrate layer, which are sequentially laminated.
- the touch-sensing layer includes a plurality of sensing units arranged at intervals and at least one grounding unit, and a gap is provided between the sensing unit and the grounding unit.
- the sensing units are configured to sense a touch signal to control an LED pixel lamp.
- the grounding unit is configured to be grounded;
- the pixel lamp spacer layer are provided with a plurality of through-holes arranged at intervals, in which the through-hole is arranged corresponding to the gap between the sensing unit and the ground unit, and communicates with the gap corresponded thereto.
- the through-holes are configured for receiving the LED pixel lamps.
- the dielectric substrate is provided with a plurality of vias, the sensing units, the ground unit, and the LED pixel lamps, by wires passing through the vias, are all coupled to a touch-sensing circuit disposed on a side of the dielectric substrate layer facing away the touch-sensing layer.
- one of the sensing units is adjacent to at least one of the LED pixel lamps.
- both the sensing unit and the ground unit are made of a conductive material
- the conductive material may be a metal conductive material or a non-metal conductive material
- the metal conductive material may be a copper foil, an aluminum foil, a copper alloy film or aluminum alloy film
- the non-metal conductive material may be conductive rubber, conductive plastic or conductive fiber fabric.
- both the pixel lamp spacer layer and the dielectric substrate layer are made of an insulating material, and the insulating material may be a glass fiber board, a liquid crystal polymer film, a resin or a ceramic.
- the touch panel further includes a solder resist ink layer coated on a surface of the touch-sensing layer away from the dielectric substrate layer, or a fire-resistant material layer disposed on the surface of the touch-sensing layer away from the dielectric substrate layer.
- cross-sections of the sensing unit and the ground unit are both octagonal, a cross-section of the through-hole is circular, and the octagon includes four curved edges and four straight edges alternately distributed. Adjacent edges of adjacent sensing units or ground units are straight edges that are parallel to each other, and the curved edges of the sensing units or ground units are parallel to arcs of a cross-section of the through-holes adjacent thereto; wherein the cross-section refers to a cross-section parallel to the touch panel.
- cross-sections of the sensing unit, the ground unit and the through-hole are square; wherein the cross-section refers to a cross-section parallel to the touch panel.
- An embodiment of the present application further provides an LED touch display screen, which includes the touch panel as above described, and further includes a touch-sensing circuit;
- the touch-sensing circuit includes at least one touch-sensing module correspondingly connected to at least one of the sensing units;
- the touch-sensing module is configured to input a touch signal via the sensing unit connected therewith and process the touch signal.
- the touch-sensing circuit further includes a current-limiting resistor, a reference capacitor, a bypass capacitor and a serial command input port;
- a touch-signal output end of the touch-sensing module is connected with a power source via the current-limiting resistor, a negative power end of the touch-sensing module is grounded, and a touch-signal input end of the touch-sensing module is connected with its corresponding sensing unit, a reference-capacitor input end of the touch-sensing module is grounded via a reference capacitor, a positive power end of the touch-sensing module is connected with a power source and grounded via a bypass capacitor, and the touch-signal output-type selection end of the touch-sensing module is grounded via the serial command input port, and the serial command input port is configured to input a serial command.
- the touch-sensing circuit further includes an LED indicator, and the LED indicator is connected between the touch-signal output end and the current-limiting resistor.
- the touch panel is constituted by a laminated stack of a touch-sensing layer, a pixel lamp spacer layer and a dielectric substrate layer, and the touch signal is sensed by a sensing unit on the touch-sensing layer, so that the size of the touch panel can be set according to needs, while the function of touch display is achieved, thereby it can be widely used in large-sized capacitance-type touch display screens, and possess the advantages of low production cost and simple processing technology.
- FIG. 1 is a front view, a top view and a cross-sectional view taken along A-A of the top view of a touch panel as provided in Embodiment 1 of the present application;
- FIG. 2 is a top view and a cross-sectional view taken along A-A of the top view of a touch panel as provided in Embodiment 2 of the present application;
- FIG. 3 is a schematic structural diagram of an LED touch display screen as provided in Embodiment 3 of the present application.
- FIG. 4 is a schematic circuit structure diagram of a touch-sensing circuit as provided in Embodiment 4 of the present application.
- this embodiment provides a touch panel, which includes at least one touch-sensing layer 1 , at least one pixel lamp spacer layer 2 and at least one dielectric substrate layer 3 , which are sequentially laminated.
- FIG. 1 exemplarily illustrates a touch-sensing layer 1 , a pixel lamp spacer layer 2 and a dielectric substrate layer 3 .
- the number of layers of the touch-sensing layer 1 , the pixel lamp spacer layer 2 or the dielectric substrate layer 3 can be set according to actual needs.
- two pixel lamp spacer layers and two dielectric substrate layers may be provided so as to increase the thickness of the pixels lamp spacer layer 2 and the dielectric substrate layer 3 to facilitate a wiring.
- the touch-sensing layer 1 includes a plurality of sensing units 11 arranged at intervals and at least one grounding unit 12 .
- a gap is provided between the sensing unit 11 and the grounding unit 12 .
- the grounding unit 12 may be independently provided or connected with any numbers of other grounding units 12 , the sensing unit 11 is used for sensing a touch signal to control the LED pixel lamp, the grounding unit 12 is grounded, and both the sensing unit 11 and the grounding unit 12 are made of conductive materials.
- the number of the sensing unit 11 and the ground unit 12 can be set according to actual needs.
- the number of the sensing units 11 and the ground units 12 may be equal.
- the touch-sensing layer 1 includes at least one grounding unit 12 , when the touch-sensing layer 1 includes two or more grounding units 12 , all grounding units 12 may be coupled with each other and connected to a common ground.
- the grounding units 12 are coupled by wires passing through vias on the dielectric substrate layer 3 to be grounded.
- one sensing unit 11 is adjacent to at least one LED pixel lamp.
- one sensing unit 11 corresponds to one LED pixel lamp or corresponds to two or more LED pixel lamps; the number of LED pixel lamps corresponding to this sensing unit 11 is determined by the density of the LED pixel lamps.
- the touch signal sensed by the sensing unit 11 specifically refers to: when a human finger or a capacitance-type pen is in contact with the touch-sensing unit, a capacitance change is caused, thereby causing a current change and generating a touch signal.
- the conductive material is a metal conductive material or a non-metal conductive material.
- metal conductive material may be selected according to actual needs, for example, a film made of copper foil, aluminum foil or alloy materials, aluminum alloys such as copper alloys.
- non-metal conductive material may be selected according to actual needs, such as conductive rubber, conductive plastic, conductive fiber fabric and the like.
- the pixel lamp spacer layer 2 is provided with a plurality of through-holes 21 arranged at intervals.
- the through-holes 21 are arranged corresponding to the gaps between the sensing units 11 and the ground units 12 and communicate with the corresponding gaps, respectively, and the through-holes 21 are used for receiving the LED pixel lamps and spacing the adjacent LED pixel lamps.
- a cross-sectional view taken along the line A-A in FIG. 1 exemplarily illustrates a situation where the number of the sensing units 11 and the grounding units 12 are equal.
- the cross-section of the sensing unit 11 and the ground unit 12 are both octagonal, and the cross-section of the through-hole 21 is circular.
- the octagon includes four curved edges and four straight edges, in which the curved side and straight side are alternately distributed. Adjacent edges of adjacent sensing units 11 or grounding units 12 are parallel straight edges, and curved edges of sensing units 11 or grounding units 12 are parallel to the cross-section arcs of adjacent through-holes.
- the cross-section refers to a cross-section parallel to the touch panel.
- the size of the sensing unit 11 and the grounding unit 12 are the same, and the distance between any adjacent sensing unit 11 or the grounding unit 12 is the same.
- the spacing between the sensing unit 11 or the grounding unit 12 and its adjacent vias are equal.
- the structure shown in FIG. 1 can maximize the area of the touch-sensing layer 1 , so that a good touching effect can be achieved when a touch panel based on this structure is applied to an LED display screen.
- the shapes of cross-sections of the sensing unit 11 , the grounding unit 12 and the through-hole 21 can be set according to actual needs.
- the dielectric substrate layer 3 is provided with a plurality of vias (not shown in the figure).
- the sensing unit 11 , the grounding unit 12 , and the LED pixel lamp are all coupled to the touch-sensing circuit (not shown in the figure) provided on the dielectric substrate layer 3 on a side facing away from touch-sensing layer 1 by wires passing through the vias.
- the pixel lamp spacer layer 2 and the dielectric substrate layer 3 are made of insulating materials.
- the thickness of the dielectric substrate layer 3 and the number of vias can be set according to actual needs.
- any type of insulating material can be selected according to actual needs, such as glass fiber boards, liquid crystal polymer films, resins or ceramics and the like.
- the touch panel further includes a solder resist ink layer coated on an end surface of the touch-sensing layer away from the pixel lamp spacer layer 2 or a fire-resistant material layer disposed on the end surface of the touch-sensing layer away from the pixel lamp spacer layer 2 .
- the fire-resistant material layer may be an FR-4 epoxy board.
- any known preparation process can be selected to prepare the touch panel according to actual needs, for example, a COB process.
- the manufacturing process of the touch panel is not particularly limited in this embodiment.
- the touch panel is constituted by a laminated stack of the touch-sensing layer 1 , the pixel lamp spacer layer 2 and the dielectric substrate layer 3 , and the touch signal is sensed by the sensing unit of the touch-sensing layer, so that the size of the touch panel can be set according to actual needs, while the function of touch display is achieved, thereby it can be widely used in large-sized capacitance-type touch display screens, and possess the advantages of low production cost and simple processing technology.
- the cross-section of the sensing unit 11 , the ground unit 12 and the through-hole 21 are all square, and the cross-section refers to a cross-section parallel to the touch panel.
- the cross-sections of the sensing unit 11 , the grounding unit 12 and the through-hole 21 are all squares with the same size. Where one through-hole 21 is surrounded with seven sensing units 11 and one grounding unit, and the other through-holes 21 are surrounded with eight sensing units.
- the touch-sensing layer includes at least one ground unit.
- an embodiment of this disclosure exemplarily illustrates an LED touch display screen 100 , which includes the touch panel 10 as described in the above embodiment, and further includes a touch-sensing circuit 20 including at least one touch-sensing module 201 .
- the touch-sensing module 201 is correspondingly connected to at least one sensing unit 11 .
- the touch-sensing module 20 is configured to input a touch signal via the sensing unit 11 connected thereto and process the touch signal.
- FIG. 3 exemplarily illustrates that the touch-sensing circuit 20 includes touch-sensing modules 201 , the number of which is equal to the number of all sensing units 11 , and each touch-sensing module 201 is connected to the corresponding one sensing unit 11 , respectively.
- the touch-sensing circuit includes a touch-sensing module, and the touch-sensing module is connected to a plurality of sensing units, respectively.
- the touch-sensing circuit 20 further includes a current-limiting resistor R 1 , a reference capacitor C 1 , a bypass capacitor C 2 and a serial command input port LHF.
- the touch-sensing module 201 is a touch-sensing chip IC 1 .
- a touch-signal output end KOUT of the touch-sensing chip IC 1 is connected to the power supply VDD via the current-limiting resistor R 1 .
- a negative power end VSS is grounded,
- a touch-signal input end Key of the touch-sensing chip IC 1 is connected to its corresponding sensing unit Key 1 - 1 ,
- a reference capacitance input end Cref of the touch-sensing chip IC 1 is grounded via the reference capacitor C 1 .
- a positive power end VDD of the touch-sensing chip IC 1 is connected to the power supply VDD and grounded via the bypass capacitor C 2 .
- the touch-signal output-type selection end LHF of the touch-sensing chip IC 1 is grounded via the serial command input port LHF, and the serial command input port LHF is configured to input serial commands.
- the touch-sensing circuit 20 further includes an LED indicator LED 1 , and the LED indicator LED 1 is connected between the touch-signal output end KOUT and the current-limiting resistor R 1 .
- the touch-sensing chip may be a BS801B type touch-sensing button chip, or any other type of chip may be selected according to actual needs.
- the touch-sensing chip is implemented by a universal integrated circuit, such as a CPU (Central Processing Unit, central processing unit), or by an ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit).
- a universal integrated circuit such as a CPU (Central Processing Unit, central processing unit), or by an ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit).
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Abstract
Description
- The present application relates to the technical field of touch display, and more particularly to a touch panel and an LED display screen.
- With the continuous development of LED display technology, the capacitance-type touch technology has been widely used in LED display screens of various electronic products, the function of intelligent touch for electronic products are achieved, and thus greatly improves the usability of electronic products.
- The existing capacitance-type touch technology is merely applicable to small-sized display screens, while regarding display for conference, display for television program, display for exhibition and other occasions, large-sized touch screens are usually required, that is, the existing capacitance-type touch technology could not be able to satisfy the increasing demand for large-sized touch display. It thus is expected urgently to provide a capacitance-type touch technology that can be applied to a large-sized display screen.
- An embodiment of the present application provides a touch panel and an LED display screen, which are applicable to large-sized display screens and implements the function of touch display for the large-sized display screen, and have the advantages of low production cost and simple processing technology.
- An aspect of the embodiment of the present application provides a touch panel, which includes at least one touch-sensing layer, at least one pixel lamp spacer layer and at least one dielectric substrate layer, which are sequentially laminated.
- The touch-sensing layer includes a plurality of sensing units arranged at intervals and at least one grounding unit, and a gap is provided between the sensing unit and the grounding unit. The sensing units are configured to sense a touch signal to control an LED pixel lamp. The grounding unit is configured to be grounded;
- The pixel lamp spacer layer are provided with a plurality of through-holes arranged at intervals, in which the through-hole is arranged corresponding to the gap between the sensing unit and the ground unit, and communicates with the gap corresponded thereto. The through-holes are configured for receiving the LED pixel lamps.
- In one embodiment, the dielectric substrate is provided with a plurality of vias, the sensing units, the ground unit, and the LED pixel lamps, by wires passing through the vias, are all coupled to a touch-sensing circuit disposed on a side of the dielectric substrate layer facing away the touch-sensing layer.
- In one embodiment, one of the sensing units is adjacent to at least one of the LED pixel lamps.
- In one embodiment, both the sensing unit and the ground unit are made of a conductive material, the conductive material may be a metal conductive material or a non-metal conductive material, and the metal conductive material may be a copper foil, an aluminum foil, a copper alloy film or aluminum alloy film, the non-metal conductive material may be conductive rubber, conductive plastic or conductive fiber fabric.
- In one embodiment, both the pixel lamp spacer layer and the dielectric substrate layer are made of an insulating material, and the insulating material may be a glass fiber board, a liquid crystal polymer film, a resin or a ceramic.
- In one embodiment, the touch panel further includes a solder resist ink layer coated on a surface of the touch-sensing layer away from the dielectric substrate layer, or a fire-resistant material layer disposed on the surface of the touch-sensing layer away from the dielectric substrate layer.
- In one embodiment, cross-sections of the sensing unit and the ground unit are both octagonal, a cross-section of the through-hole is circular, and the octagon includes four curved edges and four straight edges alternately distributed. Adjacent edges of adjacent sensing units or ground units are straight edges that are parallel to each other, and the curved edges of the sensing units or ground units are parallel to arcs of a cross-section of the through-holes adjacent thereto; wherein the cross-section refers to a cross-section parallel to the touch panel.
- In one embodiment, cross-sections of the sensing unit, the ground unit and the through-hole are square; wherein the cross-section refers to a cross-section parallel to the touch panel.
- An embodiment of the present application further provides an LED touch display screen, which includes the touch panel as above described, and further includes a touch-sensing circuit;
- The touch-sensing circuit includes at least one touch-sensing module correspondingly connected to at least one of the sensing units;
- The touch-sensing module is configured to input a touch signal via the sensing unit connected therewith and process the touch signal.
- In one embodiment, the touch-sensing circuit further includes a current-limiting resistor, a reference capacitor, a bypass capacitor and a serial command input port;
- A touch-signal output end of the touch-sensing module is connected with a power source via the current-limiting resistor, a negative power end of the touch-sensing module is grounded, and a touch-signal input end of the touch-sensing module is connected with its corresponding sensing unit, a reference-capacitor input end of the touch-sensing module is grounded via a reference capacitor, a positive power end of the touch-sensing module is connected with a power source and grounded via a bypass capacitor, and the touch-signal output-type selection end of the touch-sensing module is grounded via the serial command input port, and the serial command input port is configured to input a serial command.
- In one embodiment, the touch-sensing circuit further includes an LED indicator, and the LED indicator is connected between the touch-signal output end and the current-limiting resistor.
- In the embodiment of the present application, the touch panel is constituted by a laminated stack of a touch-sensing layer, a pixel lamp spacer layer and a dielectric substrate layer, and the touch signal is sensed by a sensing unit on the touch-sensing layer, so that the size of the touch panel can be set according to needs, while the function of touch display is achieved, thereby it can be widely used in large-sized capacitance-type touch display screens, and possess the advantages of low production cost and simple processing technology.
- In order to illustrate the technical solutions of embodiments of the present application more clearly, the drawings used in the description of the embodiments will be briefly introduced hereinbelow. Obviously, the drawings in the following description are some embodiments of the present application, and for persons skill in the art, other drawings may also be obtained on the basis of these drawings without any creative work.
-
FIG. 1 is a front view, a top view and a cross-sectional view taken along A-A of the top view of a touch panel as provided in Embodiment 1 of the present application; -
FIG. 2 is a top view and a cross-sectional view taken along A-A of the top view of a touch panel as provided inEmbodiment 2 of the present application; -
FIG. 3 is a schematic structural diagram of an LED touch display screen as provided in Embodiment 3 of the present application; and -
FIG. 4 is a schematic circuit structure diagram of a touch-sensing circuit as provided in Embodiment 4 of the present application. - In order to enable persons skilled in the art to better understand the technical solutions of embodiments, the technical solution of the embodiments will be clearly described hereinbelow with reference to the drawings of the embodiments. Obviously, the embodiments described hereinbelow are part of the embodiments of the present application, not all embodiments thereof. On the bases of these embodiments, all other embodiments obtained by persons skill in the art without creative efforts fall within the protection scope of the present application.
- The term “comprising” and any variants thereof in the description and claims of the present application and in the above-mentioned drawings are intend for explanation rather than limitation. For example, a process, a method or system, a product or equipment containing a series of steps or units are not limited to the listed steps or units, optionally steps or units not listed may also be included, or optionally other steps or units inherent to these processes, methods, products or equipment may also be included. In addition, the terms “first”, “second”, “third” and the like are used to distinguish different objects but not intend to describe specific orders.
- As shown in
FIG. 1 , this embodiment provides a touch panel, which includes at least one touch-sensing layer 1, at least one pixellamp spacer layer 2 and at least one dielectric substrate layer 3, which are sequentially laminated. -
FIG. 1 exemplarily illustrates a touch-sensing layer 1, a pixellamp spacer layer 2 and a dielectric substrate layer 3. - In specific applications, the number of layers of the touch-sensing layer 1, the pixel
lamp spacer layer 2 or the dielectric substrate layer 3 can be set according to actual needs. For example, two pixel lamp spacer layers and two dielectric substrate layers may be provided so as to increase the thickness of the pixelslamp spacer layer 2 and the dielectric substrate layer 3 to facilitate a wiring. - As shown in the top view in
FIG. 1 , the touch-sensing layer 1 includes a plurality of sensing units 11 arranged at intervals and at least onegrounding unit 12. A gap is provided between the sensing unit 11 and thegrounding unit 12. Thegrounding unit 12 may be independently provided or connected with any numbers ofother grounding units 12, the sensing unit 11 is used for sensing a touch signal to control the LED pixel lamp, thegrounding unit 12 is grounded, and both the sensing unit 11 and thegrounding unit 12 are made of conductive materials. - In specific applications, the number of the sensing unit 11 and the
ground unit 12 can be set according to actual needs. - In one embodiment, the number of the sensing units 11 and the
ground units 12 may be equal. - In a specific application, the touch-sensing layer 1 includes at least one
grounding unit 12, when the touch-sensing layer 1 includes two ormore grounding units 12, allgrounding units 12 may be coupled with each other and connected to a common ground. For example, thegrounding units 12 are coupled by wires passing through vias on the dielectric substrate layer 3 to be grounded. - In one embodiment, one sensing unit 11 is adjacent to at least one LED pixel lamp.
- In specific applications, one sensing unit 11 corresponds to one LED pixel lamp or corresponds to two or more LED pixel lamps; the number of LED pixel lamps corresponding to this sensing unit 11 is determined by the density of the LED pixel lamps.
- In specific applications, the touch signal sensed by the sensing unit 11 specifically refers to: when a human finger or a capacitance-type pen is in contact with the touch-sensing unit, a capacitance change is caused, thereby causing a current change and generating a touch signal.
- In one embodiment, the conductive material is a metal conductive material or a non-metal conductive material. Any type of metal conductive material may be selected according to actual needs, for example, a film made of copper foil, aluminum foil or alloy materials, aluminum alloys such as copper alloys. Also, any type of non-metal conductive material may be selected according to actual needs, such as conductive rubber, conductive plastic, conductive fiber fabric and the like.
- As shown in the cross-sectional view taken along the line AA in
FIG. 1 , the pixellamp spacer layer 2 is provided with a plurality of through-holes 21 arranged at intervals. The through-holes 21 are arranged corresponding to the gaps between the sensing units 11 and theground units 12 and communicate with the corresponding gaps, respectively, and the through-holes 21 are used for receiving the LED pixel lamps and spacing the adjacent LED pixel lamps. - A cross-sectional view taken along the line A-A in
FIG. 1 exemplarily illustrates a situation where the number of the sensing units 11 and thegrounding units 12 are equal. - In the specific embodiment illustrated in
FIG. 1 , the cross-section of the sensing unit 11 and theground unit 12 are both octagonal, and the cross-section of the through-hole 21 is circular. The octagon includes four curved edges and four straight edges, in which the curved side and straight side are alternately distributed. Adjacent edges of adjacent sensing units 11 orgrounding units 12 are parallel straight edges, and curved edges of sensing units 11 orgrounding units 12 are parallel to the cross-section arcs of adjacent through-holes. The cross-section refers to a cross-section parallel to the touch panel. - In the specific embodiment shown in
FIG. 1 , the size of the sensing unit 11 and thegrounding unit 12 are the same, and the distance between any adjacent sensing unit 11 or thegrounding unit 12 is the same. The spacing between the sensing unit 11 or thegrounding unit 12 and its adjacent vias are equal. - The structure shown in
FIG. 1 can maximize the area of the touch-sensing layer 1, so that a good touching effect can be achieved when a touch panel based on this structure is applied to an LED display screen. - In specific applications, the shapes of cross-sections of the sensing unit 11, the
grounding unit 12 and the through-hole 21 can be set according to actual needs. - The dielectric substrate layer 3 is provided with a plurality of vias (not shown in the figure). The sensing unit 11, the
grounding unit 12, and the LED pixel lamp are all coupled to the touch-sensing circuit (not shown in the figure) provided on the dielectric substrate layer 3 on a side facing away from touch-sensing layer 1 by wires passing through the vias. The pixellamp spacer layer 2 and the dielectric substrate layer 3 are made of insulating materials. - In specific applications, the thickness of the dielectric substrate layer 3 and the number of vias can be set according to actual needs.
- In specific applications, any type of insulating material can be selected according to actual needs, such as glass fiber boards, liquid crystal polymer films, resins or ceramics and the like.
- In one embodiment, the touch panel further includes a solder resist ink layer coated on an end surface of the touch-sensing layer away from the pixel
lamp spacer layer 2 or a fire-resistant material layer disposed on the end surface of the touch-sensing layer away from the pixellamp spacer layer 2. - In one embodiment, the fire-resistant material layer may be an FR-4 epoxy board.
- In specific applications, any known preparation process can be selected to prepare the touch panel according to actual needs, for example, a COB process. The manufacturing process of the touch panel is not particularly limited in this embodiment.
- In this embodiment, the touch panel is constituted by a laminated stack of the touch-sensing layer 1, the pixel
lamp spacer layer 2 and the dielectric substrate layer 3, and the touch signal is sensed by the sensing unit of the touch-sensing layer, so that the size of the touch panel can be set according to actual needs, while the function of touch display is achieved, thereby it can be widely used in large-sized capacitance-type touch display screens, and possess the advantages of low production cost and simple processing technology. - As shown in
FIG. 2 , in this embodiment, where the cross-section of the sensing unit 11, theground unit 12 and the through-hole 21 (the black square in the figure indicates the through-hole 21) are all square, and the cross-section refers to a cross-section parallel to the touch panel. - In
FIG. 2 , the cross-sections of the sensing unit 11, thegrounding unit 12 and the through-hole 21 are all squares with the same size. Where one through-hole 21 is surrounded with seven sensing units 11 and one grounding unit, and the other through-holes 21 are surrounded with eight sensing units. - In a specific application, the touch-sensing layer includes at least one ground unit.
- As shown in
FIG. 3 , an embodiment of this disclosure exemplarily illustrates an LED touch display screen 100, which includes thetouch panel 10 as described in the above embodiment, and further includes a touch-sensing circuit 20 including at least one touch-sensing module 201. The touch-sensing module 201 is correspondingly connected to at least one sensing unit 11. The touch-sensing module 20 is configured to input a touch signal via the sensing unit 11 connected thereto and process the touch signal. -
FIG. 3 exemplarily illustrates that the touch-sensing circuit 20 includes touch-sensing modules 201, the number of which is equal to the number of all sensing units 11, and each touch-sensing module 201 is connected to the corresponding one sensing unit 11, respectively. - In one embodiment, the touch-sensing circuit includes a touch-sensing module, and the touch-sensing module is connected to a plurality of sensing units, respectively.
- As shown in
FIG. 4 , in one embodiment of the present application, the touch-sensing circuit 20 further includes a current-limiting resistor R1, a reference capacitor C1, a bypass capacitor C2 and a serial command input port LHF. - As shown in
FIG. 4 , in this embodiment, the touch-sensing module 201 is a touch-sensing chip IC1. A touch-signal output end KOUT of the touch-sensing chip IC1 is connected to the power supply VDD via the current-limiting resistor R1. A negative power end VSS is grounded, A touch-signal input end Key of the touch-sensing chip IC1 is connected to its corresponding sensing unit Key 1-1, A reference capacitance input end Cref of the touch-sensing chip IC1 is grounded via the reference capacitor C1. A positive power end VDD of the touch-sensing chip IC1 is connected to the power supply VDD and grounded via the bypass capacitor C2. The touch-signal output-type selection end LHF of the touch-sensing chip IC1 is grounded via the serial command input port LHF, and the serial command input port LHF is configured to input serial commands. - As shown in
FIG. 4 , in this embodiment, the touch-sensing circuit 20 further includes an LED indicator LED1, and the LED indicator LED1 is connected between the touch-signal output end KOUT and the current-limiting resistor R1. - In specific applications, the touch-sensing chip may be a BS801B type touch-sensing button chip, or any other type of chip may be selected according to actual needs.
- In one embodiment, the touch-sensing chip is implemented by a universal integrated circuit, such as a CPU (Central Processing Unit, central processing unit), or by an ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit).
- The foregoing description are merely preferred embodiments of the present application, and are not intended to limit the present application; any modifications, equivalent substitutions and improvements made within the spirit and principles of the disclosure should be understood as being included within the scope of the present application.
Claims (9)
Applications Claiming Priority (4)
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CN201710584655.1A CN107340926B (en) | 2017-07-17 | 2017-07-17 | Touch control panel and LED display screen |
CN201710584655.1 | 2017-07-17 | ||
CN201710584655 | 2017-07-17 | ||
PCT/CN2017/117510 WO2019015248A1 (en) | 2017-07-17 | 2017-12-20 | Touchpad and led display screen |
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US20200363889A1 true US20200363889A1 (en) | 2020-11-19 |
US10852871B1 US10852871B1 (en) | 2020-12-01 |
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EP (1) | EP3657307A4 (en) |
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CN107340926B (en) * | 2017-07-17 | 2023-09-26 | 深圳市奥拓电子股份有限公司 | Touch control panel and LED display screen |
CN109427264A (en) * | 2017-08-30 | 2019-03-05 | 深圳市奥拓电子股份有限公司 | A kind of light control plate and LED display |
CN207849005U (en) * | 2018-02-02 | 2018-09-11 | 深圳市奥拓电子股份有限公司 | LED lamp bead and LED show structure |
CN108564891A (en) * | 2018-02-02 | 2018-09-21 | 深圳市奥拓电子股份有限公司 | LED display modules and LED display |
CN109360503B (en) * | 2018-11-20 | 2021-02-19 | 安徽大学 | LED touch display screen |
JP2021179877A (en) * | 2020-05-15 | 2021-11-18 | 株式会社東海理化電機製作所 | Operation device |
CN112331088A (en) * | 2020-11-02 | 2021-02-05 | 厦门华联电子股份有限公司 | Touch LED digital display module |
CN114035700B (en) * | 2021-07-20 | 2023-07-14 | 重庆康佳光电技术研究院有限公司 | Touch display panel and electronic equipment |
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KR101450256B1 (en) * | 2008-06-30 | 2014-10-21 | 서울반도체 주식회사 | Lighting device |
JP4888669B2 (en) * | 2009-03-30 | 2012-02-29 | カシオ計算機株式会社 | Display device, display device drive control method, and display device manufacturing method |
CN102446012B (en) | 2010-09-30 | 2015-04-08 | 联胜(中国)科技有限公司 | Touch panel structure and touch display panel |
JP5778961B2 (en) * | 2011-03-29 | 2015-09-16 | 株式会社Joled | Display device and electronic device |
US20130265137A1 (en) * | 2012-04-02 | 2013-10-10 | Validity Sensors, Inc. | Integratable fingerprint sensor packagings |
CN103293726B (en) * | 2012-06-29 | 2016-05-04 | 上海天马微电子有限公司 | Liquid crystal cell, 3D touch control display apparatus and control method thereof |
JP2014123273A (en) * | 2012-12-21 | 2014-07-03 | Kyocera Corp | Input device, and display device including the same |
CN103970312B (en) * | 2013-01-24 | 2017-10-27 | 联胜(中国)科技有限公司 | Touch control display apparatus |
US10133426B2 (en) * | 2015-06-18 | 2018-11-20 | X-Celeprint Limited | Display with micro-LED front light |
CN204945982U (en) * | 2015-07-24 | 2016-01-06 | 宸鸿光电科技股份有限公司 | Touch-control display panel |
WO2017060487A2 (en) * | 2015-10-08 | 2017-04-13 | X-Celeprint Limited | Display with integrated electrodes |
KR102417986B1 (en) * | 2015-12-28 | 2022-07-07 | 삼성디스플레이 주식회사 | Display device |
CN106708342B (en) | 2016-12-21 | 2020-05-19 | 上海天马有机发光显示技术有限公司 | OLED touch display panel, manufacturing method thereof and OLED touch display device |
CN207458004U (en) * | 2017-07-17 | 2018-06-05 | 深圳市奥拓电子股份有限公司 | A kind of Trackpad and LED display |
CN107340926B (en) * | 2017-07-17 | 2023-09-26 | 深圳市奥拓电子股份有限公司 | Touch control panel and LED display screen |
CN108288681B (en) * | 2018-01-11 | 2021-01-22 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof and display device |
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EP3657307A1 (en) | 2020-05-27 |
JP2020528632A (en) | 2020-09-24 |
WO2019015248A1 (en) | 2019-01-24 |
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