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WO2015081637A1 - Ecran tactile infrarouge et dispositif d'affichage a commande tactile - Google Patents

Ecran tactile infrarouge et dispositif d'affichage a commande tactile Download PDF

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Publication number
WO2015081637A1
WO2015081637A1 PCT/CN2014/072615 CN2014072615W WO2015081637A1 WO 2015081637 A1 WO2015081637 A1 WO 2015081637A1 CN 2014072615 W CN2014072615 W CN 2014072615W WO 2015081637 A1 WO2015081637 A1 WO 2015081637A1
Authority
WO
WIPO (PCT)
Prior art keywords
infrared
circuit board
flexible circuit
touch screen
control circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2014/072615
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English (en)
Chinese (zh)
Inventor
陈伟山
翟振耀
栗勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENZHEN TIMELINK TECHNOLOGY Co Ltd
Original Assignee
SHENZHEN TIMELINK TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHENZHEN TIMELINK TECHNOLOGY Co Ltd filed Critical SHENZHEN TIMELINK TECHNOLOGY Co Ltd
Publication of WO2015081637A1 publication Critical patent/WO2015081637A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

Definitions

  • the present invention relates to a touch screen, and more particularly to an infrared touch screen and a touch display device.
  • the infrared touch screen uses a dense infrared light matrix in the X and Y directions to detect and locate the user's touch.
  • the infrared touch screen is provided with a circuit board outer frame on the front side of the display, and the circuit board arranges an infrared transmitting tube and an infrared receiving tube on four sides of the screen, and one-to-one correspondingly forms an infrared light matrix which is horizontally and vertically intersected.
  • the finger blocks the two infrared rays passing through the position, so that the position of the touch point on the screen can be determined.
  • the infrared touch screen is usually composed of a two-layer PCB board, a touch substrate, an LED lamp and additional accessories.
  • the LED light is set on the upper PCB board.
  • the upper PCB board is electrically connected to the lower layer control circuit board by soldering. In the welding process, due to the large number of solder joints, the operation in the manufacturing process is complicated, resulting in high labor costs.
  • An infrared touch screen comprising:
  • the touch substrate comprising an upper surface and a lower surface parallel to the upper surface;
  • An annular flexible circuit board is fixedly disposed around the touch substrate, and the flexible circuit board extends from the upper surface of the touch substrate to the lower surface;
  • the plurality of infrared emitters located above the upper surface, the plurality of infrared emitters being arranged side by side on the flexible circuit board adjacent to the two sides of the upper surface, and electrically connected to the flexible circuit board connection;
  • the plurality of infrared emitters being juxtaposed on the flexible circuit board adjacent to two sides of the upper surface, the plurality of infrared receivers and The plurality of infrared emitters are oppositely disposed, the plurality of infrared receivers are electrically connected to the flexible circuit board, and the infrared receiver receives infrared light emitted by the infrared emitter;
  • a filter strip disposed on the plurality of infrared emitters and the plurality of infrared receivers, wherein infrared light emitted by the infrared emitters is transparent to the filter strips, and the infrared rays are in the touch Forming an infrared touch screen above the upper surface of the control substrate, the infrared light entering the infrared receiver through the filter strip;
  • control circuit board disposed under the lower surface, the control circuit board is electrically connected to the flexible circuit board, and the control circuit board acquires the infrared touch according to the infrared receiver receiving infrared light The location of the touch point on the web.
  • the filter strip is provided with a receiving slot, the receiving slot extends along the axis of the filter strip, and the infrared emitter is received in the receiving slot, and the receiving slot is away from
  • the sidewall of the edge of the touch panel is fixedly connected to the touch substrate, and the sidewall of the receiving slot adjacent to the edge of the touch substrate is fixedly connected to the flexible circuit board.
  • the receiving groove has a trapezoidal cross section
  • the side wall of the receiving groove connected to the touch substrate is an inclined wall
  • the inclined wall is inclined with respect to a horizontal plane
  • the inclined wall is Glossy.
  • the filter strips are four, and the four filter strips are respectively fixed on edges of the upper surface of the touch substrate.
  • the flexible circuit board includes a body and a connecting arm, the body is elongated and disposed on a peripheral edge of the upper surface of the touch substrate, and the connecting arm is disposed on the body One side of the edge of the touch substrate, the free end of the connecting arm extends to a lower surface of the touch substrate, and the free end of the connecting arm is electrically connected to the control circuit board.
  • the flexible circuit boards are four, each of the flexible circuit boards is elongated, and the four flexible circuit boards are sequentially connected end to end and electrically connected to each other.
  • a plurality of flexible circuit connectors and FPC cables are further included, and both ends of the flexible circuit board are provided with a flexible circuit connector, and the FPC cable is disposed on the two adjacent terminals. Between the flexible circuit boards, two ends of the FPC cable are respectively electrically connected to two adjacent flexible circuit connectors.
  • a plurality of pin connectors are further included, and both ends of the flexible circuit board are provided with a pin connector, and two adjacent pin connectors are coupled to each other to make adjacent The two flexible circuit boards are electrically connected.
  • control circuit board is annular, and an edge of the control circuit board is flush with an edge of the touch substrate.
  • control circuit board is four, the control circuit board is elongated, and the four control circuit boards are connected end to end in sequence, and are electrically connected to each other.
  • control circuit board is provided with a flexible circuit connector and an FPC cable at both ends, and the FPC cable is disposed between two adjacent control circuit boards, the FPC Both ends of the cable are electrically connected to two adjacent flexible circuit connectors, respectively.
  • the two ends of the control circuit board are provided with a pin connector, and the two adjacent pin connectors are mated to electrically connect the plurality of the control circuit boards to each other. .
  • the plane of the flexible circuit board and the plane of the touch substrate are perpendicular to each other, and the flexible circuit board is fixedly connected to the outer sidewall of the touch substrate.
  • the flexible circuit boards are four, and the four flexible circuit boards are end-to-end spliced into a ring shape and electrically connected to each other.
  • both ends of the flexible circuit board are provided with a flexible circuit connector and an FPC cable, and the FPC cable is disposed between two adjacent flexible circuit boards, the FPC Both ends of the cable are electrically connected to two adjacent flexible circuit connectors, respectively.
  • the flexible circuit board is provided with a pin connector at both ends, and the two adjacent pin connectors are mated to electrically connect the plurality of flexible circuit boards to each other. .
  • the method further includes a plurality of flexible circuit connecting plates, the flexible circuit connecting plate is elongated, one end of the flexible circuit connecting board is electrically connected to the flexible circuit board, and the other end is connected to the control circuit The board is electrically connected.
  • a flexible circuit connector is disposed on a side of the control circuit board, and the flexible circuit connection board is adjacent to an end of the control circuit board through the flexible circuit connector and the control circuit board Electrical connection.
  • the flexible circuit connection board and the control circuit board are each provided with a pin connector, and the flexible circuit connection board and the control circuit board are electrically connected through the pin connector.
  • a touch display device is also provided.
  • a touch display device includes:
  • a display screen disposed on one side of the touch substrate and stacked on the touch screen.
  • the infrared touch screen enables the infrared emitter, the infrared receiver and the control circuit through the flexible circuit board, compared with the conventional method of electrically connecting the PCB board and electrically connecting the upper PCB board and the lower layer control circuit board by soldering.
  • the plates are electrically connected, thus avoiding the occurrence of more solder joint welding processes, simplifying the manufacturing process and reducing costs.
  • the flexible circuit connector or the pin connector is detachably connected to the control circuit board to avoid electrical connection between the flexible circuit board and the control circuit board.
  • a component of a flexible circuit board, an infrared receiver, an infrared emitter, or a control board has a quality problem or is damaged during the manufacturing process, it is only necessary to replace some of the components by removing the flexible circuit board. The components that are welded together are replaced, so the manufacturing cost can be saved.
  • the volume occupied by the components can be reduced.
  • the frame of the above infrared touch screen can reach 5 ⁇ 6mm, which is beneficial to the development of the infrared touch screen toward a narrow frame and thin.
  • 1 is an exploded view of an infrared touch screen of an embodiment
  • FIG. 2 is an assembled view of the infrared touch screen shown in FIG. 1;
  • Figure 3 is a cross-sectional view of the infrared touch screen shown in Figure 1;
  • FIG. 4 is a partial enlarged view of a portion I of the infrared touch screen of FIG. 2;
  • FIG. 5 is an assembled view of some components of the infrared touch screen shown in FIG. 1;
  • FIG. 6 is a partial enlarged view of a portion II of the infrared touch screen shown in FIG. 5;
  • Figure 7 is a partial enlarged view of another embodiment of the portion II of Figure 6;
  • Figure 8 is a partial enlarged view of another embodiment of the portion II of Figure 6;
  • Figure 9 is a perspective view of the infrared touch screen shown in Figure 1;
  • Figure 10 is a partial enlarged view of the portion of the infrared touch screen III of Figure 9;
  • Figure 11 is a partial enlarged view of another embodiment of the portion III of Figure 9;
  • Figure 12 is a partial enlarged view of another embodiment of the portion III of Figure 9;
  • FIG. 13 is a perspective view of an infrared touch screen according to another embodiment.
  • Figure 14 is a cross-sectional view of the infrared touch screen shown in Figure 13;
  • 15 is a cross-sectional view of an infrared touch screen of another embodiment
  • 16 is a perspective view of an infrared touch screen according to another embodiment
  • Figure 17 is a partial enlarged view of the IV portion of the infrared touch screen of Figure 16;
  • Figure 18 is a partial enlarged view of another embodiment of the portion IV of Figure 16;
  • Figure 19 is a partial enlarged view of another embodiment of the IV portion of Figure 16;
  • FIG. 20 is a schematic structural diagram of a touch display device according to an embodiment.
  • an infrared touch screen 100 of an embodiment includes a touch substrate 110 , a flexible circuit board 120 , a flexible circuit connector 130 , a plurality of FPC cables 140 , and a plurality of infrared emitters 150 and An infrared receiver 160, a filter strip 170 and a control circuit board 180.
  • the touch substrate 110 is tempered glass.
  • the tempered glass is chemically tempered with flat glass, and its surface hardness is H7H, and the warpage is ⁇ 1 ⁇ .
  • the touch substrate 110 includes an upper surface 111 and a lower surface 112 that is parallel to the upper surface 111, and the upper surface 111 is an upper surface.
  • the touch substrate 110 is provided with a screen printed reference line 113 near a side of the infrared emitter 150.
  • the annular flexible circuit board 120 is fixedly disposed around the touch substrate 110 .
  • the flexible circuit board 120 may extend from the upper surface 111 of the touch substrate 110 to the lower surface 112.
  • a side surface of the flexible circuit board 120 adjacent to the touch substrate 110 is provided with a double-sided tape, and the flexible circuit board 120 is fixed on the touch substrate 110 by a double-sided tape.
  • the flexible circuit board 120 includes a body 121 and a connecting arm 123.
  • the body 121 is elongated.
  • the body 121 is disposed on a peripheral edge of the upper surface of the touch substrate 110.
  • the connecting arm 123 is disposed on a side of the body 121 near the edge of the touch substrate 110.
  • the free end of the connecting arm 123 extends to the lower surface 112 of the touch substrate 110.
  • the free end of the connecting arm 123 is electrically connected to the control circuit board 180.
  • the flexible circuit board 120 is four.
  • the flexible circuit board 120 is elongated.
  • the four flexible circuit boards 120 are connected end to end in sequence, and are spliced into a ring shape.
  • the four flexible circuit boards 120 are electrically conducted to each other.
  • One side of the body 121 is aligned with the reference line 113 on the touch substrate 110.
  • the flexible circuit board 120 is a ring-shaped monolithic structure that does not require electrical connection using other components for splicing.
  • the flexible circuit connector 130 is disposed at both ends of the body 121.
  • FPC Flexible Printed A circuit is disposed between the two adjacent flexible circuit boards, and two ends of the FPC cable are electrically connected to the adjacent two flexible circuit connectors 130, respectively.
  • the FPC cable 140 is elongated, and the two ends are designed to be pluggable and can be directly connected to the flexible circuit connector 130 or soldered to both ends of the body 121.
  • the middle of the FPC cable 140 is the line.
  • the substrate of the FPC cable 140 is rolled copper, and the FPC cable 140 has the characteristics of resistance to tortuosity and high flexibility.
  • the plurality of flexible circuit connectors 130 and the plurality of FPC cables 140 can be omitted. Both ends of the body 121 are provided with pin connectors 190, and two adjacent pin connectors 190 are matedly connected to electrically connect adjacent two flexible circuit boards 120.
  • a plurality of infrared emitters 150 are located above the upper surface 111.
  • a plurality of infrared emitters 150 are arranged side by side on the flexible circuit board 120 on the adjacent sides of the upper surface 111, and are electrically connected to the flexible circuit board 120.
  • a plurality of infrared emitters 150 can emit infrared light.
  • the elongated flexible circuit board 120 is distributed along the edge of the touch substrate 110, and the infrared emitters 150 are also distributed along the adjacent two edges of the touch substrate 110.
  • the infrared emitter 150 may be an LED tube. LED tubes emit infrared light.
  • a plurality of infrared receivers 160 are located above the upper surface 111.
  • a plurality of infrared receivers 160 are arranged side by side on the flexible circuit board 120 on the adjacent sides of the upper surface 111.
  • the infrared receiver 160 is disposed opposite the infrared emitter 150.
  • a plurality of infrared receivers 160 are electrically connected to the flexible circuit board 120.
  • the infrared receiver 160 receives the infrared light emitted by the infrared emitter 150.
  • the infrared generator emits infrared light to the opposite infrared receiver 160 on both sides of the touch substrate 110, and the infrared receiver 160 receives the emitted infrared light.
  • the infrared light forms an infrared touch screen on one side of the touch substrate 110. When the touch substrate 110 is touched to form a touch point, the infrared receiver 160 and the infrared emitter 150 can acquire the infrared light.
  • the infrared receiver 160 is an infrared receiving LED tube.
  • the filter strip 170 is disposed on the plurality of infrared emitters 150 and the plurality of infrared receivers 160.
  • the infrared light emitted by the infrared emitter 150 can pass through the filter strip 170, and the infrared light can be received by the infrared receiver 160 via the filter strip 170.
  • a receiving groove 171 is defined in the filter strip 170.
  • the receiving groove 171 extends along the axis of the filter strip 170, and the infrared emitter 150 is received in the receiving groove 171.
  • the side wall of the receiving slot 171 adjacent to the edge of the touch substrate 110 is fixedly connected to the touch substrate 110.
  • the side wall of the receiving slot 171 away from the edge of the touch substrate 110 is fixedly connected to the flexible circuit board 120.
  • the receiving groove 171 has a trapezoidal cross section, and the side wall of the receiving groove 171 connected to the touch substrate 110 is an inclined wall 172.
  • the inclined wall 172 is disposed obliquely with respect to the horizontal plane, and the inclined wall 172 is a light exiting surface. Light exits through the inclined wall 172.
  • the filter strip 170 has a filtering effect on the light emitted by the infrared emitter 150, so that the light transmitted through the filter strip 170 is all infrared light.
  • the filter strip 170 has a filtering effect on the light entering the infrared receiver 160, ensuring that the infrared receiver 160 can only receive infrared light from the infrared emitter 150, thereby avoiding the light entering the infrared receiver 160 due to the external environment, affecting the infrared receiver. 160 judgment of the position of the touch point. Moreover, the filter strip 170 limits the infrared emitter 150 and the infrared receiver 160 in the receiving groove 171, which can increase the strength of the overall assembly.
  • the filter strip 170 can be made into a one-piece or a panel type according to the production line production and the assembly requirements of the infrared touch screen 100. Specifically, in the present embodiment, the filter strip 170 has an integral structure. The filter strip 170 has a frame shape. The filter strips 170 are disposed on the periphery of the touch panel 110 such that the infrared emitters 150 and the infrared receivers 160 are received in the receiving slots 171 of the filter strips 170.
  • the control circuit board 180 is disposed below the lower surface 112.
  • the control circuit board 180 is electrically connected to the flexible circuit board 120.
  • the control circuit board 180 acquires the position of the touch point on the infrared touch screen according to the situation that the infrared receiver 160 receives the infrared light.
  • the control circuit board 180 has a plurality of components such as IC, capacitor, and resistor on one side, and a double-sided adhesive on the other side, and the control circuit board 180 is fixed on the lower surface 112 of the touch substrate 110 by using a backing.
  • the control circuit board 180 is annular. The edge of the control circuit board 180 is flush with the edge of the touch substrate 110. There are four control circuit boards 180.
  • the control circuit board 180 is elongated.
  • the four control circuit boards 180 are connected end to end in sequence, and are spliced into a ring shape.
  • the four control circuit boards 180 are electrically connected to each other.
  • the flexible circuit connector 130 and the plurality of FPC cables 140 are disposed at both ends of the control circuit board 180.
  • the FPC cable 140 is disposed between two adjacent control circuit boards 180. The two ends of the FPC cable 140 are electrically connected to the adjacent two flexible circuit connectors 130, respectively.
  • the FPC cable 140 is elongated. The two ends are designed to be pluggable and can be directly connected to the flexible circuit connector 130 or soldered to both ends of the flexible circuit board 120.
  • the middle of the FPC cable 140 is the line.
  • the substrate of the FPC cable 140 is rolled copper, and the FPC cable 140 has the characteristics of resistance to tortuosity and high flexibility.
  • a pin connector 190 is provided at both ends of the control circuit board 180. Adjacent two pin connectors 190 are mated to electrically connect adjacent two control circuit boards 180.
  • the pin connector 190 can also be omitted.
  • the control circuit board 180 is a ring-shaped monolithic structure that requires no other components to be electrically connected for splicing.
  • the infrared touch screen 100 has at least the following advantages:
  • the infrared emitter 150 and the infrared receiver 160 are electrically connected to the control circuit board 180 through the flexible circuit board 120.
  • the infrared touch screen 100 can avoid more solder joints and a simple soldering process. The production process reduces costs.
  • the flexible circuit connector 130 or the pin connector 190 is detachably connected to the control circuit board 180 to avoid electrical connection between the flexible circuit board 120 and the control circuit board 180.
  • the flexible circuit board 120, the infrared receiver 160, the infrared emitter 150, or the control circuit board 180 has a quality problem or is damaged during the manufacturing process, only a part of the components can be removed by disassembling the flexible circuit board 120. Replacement eliminates the need to replace all the components that are welded together, thus saving manufacturing costs.
  • the volume occupied by the components can be reduced.
  • the frame of the infrared touch screen 100 can reach 5-6 mm, which is beneficial to the development of the infrared touch screen 100 toward a narrow frame and a thin trend.
  • the infrared touch screen 100 includes a plurality of flexible circuit connecting plates 199 .
  • the flexible circuit connecting plate 199 is elongated.
  • the control circuit board 180 is provided with a flexible circuit connector 130. One end of the flexible circuit connection board 199 is electrically connected to the flexible circuit board 120, and the other end is electrically connected to the control circuit board 180 through the flexible circuit connector 130.
  • control circuit board 180 is square.
  • the control circuit board 180 is disposed on the lower surface 112 of the touch substrate 110.
  • the area of the control circuit board 180 is smaller than the area of the touch substrate 110.
  • a plurality of flexible circuit connectors 130 are provided on the periphery of the control circuit board 180.
  • the flexible circuit connection board 199 and the flexible circuit board 120 have an integral structure.
  • the flexible circuit connection board 199 extends from one side of the flexible circuit board 120 and extends to the lower surface 112.
  • the axis of the flexible circuit connection plate 199 is perpendicular to the axis of the flexible circuit board 120.
  • the control circuit board 180 is provided with a flexible circuit connector 130.
  • the flexible circuit connection board 199 is electrically connected to the control circuit board 180 through the flexible circuit connector 130 near one end of the control circuit board 180. There are five flexible circuit connecting plates 199. Then, five flexible circuit connectors 130 are provided on the control circuit board 180. A flexible circuit connecting plate 199 is disposed on each of the three flexible circuit boards 120. A flexible circuit connector 130 is disposed on each of the three sides of the control circuit board 180. The three flexible circuit boards 120 are electrically connected to the control circuit board 180 through a flexible circuit connection board 199. In addition to this, two flexible circuit connecting plates 199 are connected to the fourth flexible circuit board 120. Two flexible circuit connectors 130 are provided on the fourth side of the control circuit board 180.
  • the fourth flexible circuit board 120 is electrically connected to the control circuit board 180 through two flexible circuit connection boards 199 and two flexible circuit connectors 130. Since the interfaces of the different control circuit boards 180 have different pins and the number of pins is large, it is necessary to electrically conduct the pins of the interface through the two flexible circuit connection boards, respectively, to achieve the flexible circuit board 120 and control. A good electrical connection between the boards 180 is possible.
  • the flexible circuit connection board 199 can be an FPC cable.
  • the FPC cable is elongated, and the two ends are designed to be pluggable and can be directly connected to the flexible circuit connector 130 of the control circuit board 180.
  • the substrate of the FPC cable is rolled copper, and the FPC cable has the characteristics of resistance to tortuosity and high flexibility.
  • one end of the FPC cable adjacent to the flexible circuit board 120 is electrically connected to the flexible circuit board 120 by soldering, and the other end is electrically connected to the control circuit board 180 through the flexible circuit connector 130.
  • a flexible pin connector 199 is provided with a first pin connector at both ends.
  • the flexible circuit board 120 and the control circuit board 180 are each provided with a second pin connector that is coupled to the first pin connector.
  • the flexible circuit connecting board 199 is coupled to the second pin connector through the first pin connector to electrically connect the flexible circuit board 120 to the control circuit board 180.
  • the flexible circuit connecting plate 199 is provided with a first pin connector at one end of the control circuit board 180, and the flexible circuit connecting plate 199 is electrically connected to the flexible circuit board 120 by soldering at the other end.
  • the flexible circuit board 120 is a ring-shaped monolithic structure that requires no other components to be electrically connected for splicing.
  • control circuit board 180 does not need to be formed into a ring shape, and the shape of the control circuit board 180 is not limited, so that the production of the infrared touch screen 100 is facilitated.
  • the plane of the flexible circuit board 120 and the plane of the touch substrate 110 are perpendicular to each other.
  • the flexible circuit board 120 is fixedly connected to the outer sidewall of the touch substrate 110 .
  • the flexible circuit boards 120 on the adjacent sides can be electrically connected through the FPC cable 140 or the pin connector 190.
  • the flexible circuit board 120 is a ring-shaped monolithic structure. The flexible circuit board 120 can be directly sleeved on the outer side of the touch substrate 110.
  • the filter strip 170 is directly provided with an infrared emitter 150 and an infrared receiver 160 in front. There is no need to open the square slot 171. The volume of the filter strip 170 is reduced, which is advantageous for narrowing the side frame of the infrared touch screen 100 described above.
  • the flexible circuit board 120 since the flexible circuit board 120 is connected to the outer side wall of the touch substrate, the flexible circuit board 120 does not occupy the surface of the touch substrate, so that the edge of the infrared touch screen 100 can be narrowed.
  • the frame of the infrared touch screen 100 can reach 2 ⁇ 3 mm, improve the performance of the infrared touch screen 100, and can make the infrared touch screen 100 beautiful.
  • the present invention further provides a touch display device 10 .
  • the touch display device 10 includes the touch screen 100 and the display screen 200 described above.
  • the display screen 200 is disposed on one side of the touch substrate 110 and is stacked on the touch screen 100 .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

L'invention concerne un écran tactile infrarouge, qui comprend un substrat de commande tactile, une carte de circuit imprimé annulaire flexible, une pluralité d'émetteurs infrarouge, une pluralité de récepteurs infrarouge, une bande filtre et une carte de circuit de commande. La carte de circuit imprimé flexible s'étend de la surface supérieure du substrat de commande tactile à la surface inférieure, et est connectée électriquement à la carte de circuit de commande; les émetteurs infrarouges sont aménagés parallèlement le long de la carte de circuit imprimé flexible; la pluralité des récepteurs infrarouges et la pluralité des émetteurs infrarouges sont placés sur des côtés opposés de la surface supérieure, respectivement, la pluralité des récepteurs infrarouges étant connectés électriquement à la carte de circuit imprimé flexible; la bande filtre couvre la pluralité des émetteurs infrarouges et la pluralité des récepteurs infrarouges; la lumière infrarouge émise par les émetteurs infrarouges peut être transmise par la bande filtre dans les récepteurs infrarouges; et la carte de circuit de commande obtient les positions des points tactiles sur le réseau de commande tactile infrarouge en fonction de la lumière infrarouge reçue par les récepteurs infrarouges. Cet écran tactile infrarouge permet d'éviter la formation de nombreux points de soudure, de simplifier le procédé de fabrication et de réduire les coûts.
PCT/CN2014/072615 2013-12-06 2014-02-27 Ecran tactile infrarouge et dispositif d'affichage a commande tactile Ceased WO2015081637A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310659855.0A CN104699326B (zh) 2013-12-06 2013-12-06 新型红外触控屏及触控显示装置
CN201310659855.0 2013-12-06

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Publication Number Publication Date
WO2015081637A1 true WO2015081637A1 (fr) 2015-06-11

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PCT/CN2014/072615 Ceased WO2015081637A1 (fr) 2013-12-06 2014-02-27 Ecran tactile infrarouge et dispositif d'affichage a commande tactile

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CN (1) CN104699326B (fr)
WO (1) WO2015081637A1 (fr)

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CN115877962A (zh) * 2021-09-26 2023-03-31 深圳市华胜软件技术有限公司 一种红外触控屏和显示装置

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CN107577095A (zh) * 2017-10-27 2018-01-12 无锡变格新材料科技有限公司 一种窄边框触控液晶屏
CN108388056B (zh) 2018-03-15 2021-08-06 京东方科技集团股份有限公司 显示面板及其制作方法

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