KR200481966Y1 - Touch display device - Google Patents

Touch display device Download PDF

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Publication number
KR200481966Y1
KR200481966Y1 KR2020150003568U KR20150003568U KR200481966Y1 KR 200481966 Y1 KR200481966 Y1 KR 200481966Y1 KR 2020150003568 U KR2020150003568 U KR 2020150003568U KR 20150003568 U KR20150003568 U KR 20150003568U KR 200481966 Y1 KR200481966 Y1 KR 200481966Y1
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KR
South Korea
Prior art keywords
touch panel
circuit board
edge
panel
display device
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KR2020150003568U
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Korean (ko)
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KR20160002015U (en
Inventor
리카르도 프로세르피오
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퓨쳐랩스 엔터프라이즈 코포레이션 리미티드
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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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers

Abstract

The present invention provides a touch display device including a protective panel, a display panel, a touch panel, a flexible circuit board, a driver circuit, a plurality of pins and a protective layer. The touch panel includes a sensing electrode layer and at least one signal line electrically connected to the sensing electrode layer, and the sensing electrode layer and the sensing electrode layer are electrically connected to each other. Wherein the flexible circuit board is coupled to the edge of the touch panel and has a length shorter than a length of the edge, wherein the flexible circuit board has a plurality of sensing electrodes, one end of the flexible circuit board being coupled to an edge of the touch panel, And is basically located at the center of the edge. The driving circuit is provided on the flexible circuit board and is electrically connected to at least one signal line for driving the touch panel. The plurality of pins are provided at the other end of the flexible circuit board and electrically connect the driving circuit. And the driving circuit.

Description

[0001] TOUCH DISPLAY DEVICE [0002]

The present invention relates to a touch display device, and more particularly, to a touch display device in which the system design is not required to change even if the position of a flexible circuit board of a touch display device of a different size is changed.

Recently, the market share of the touch display device is gradually increasing due to the advantages of convenient operation and control of the touch display device. At the same time, the demands of people for thin and light touch display device models are also increasing, and the flexible circuit boards are used in large quantities in touch display devices which are lightweight or have a lot of space limitations.

With the development of science and technology, the demand for screen sizes of people's mobile devices, such as smart phones and panels, is also becoming increasingly diverse. As the screen size is changed, each manufacturer typically produces panels of different sizes and other manufacturers The design of the touch panel must be adjusted. Therefore, the equipment in the manufacturing line must be changed differently according to the system design, resulting in a great expense for manufacturers who manufacture panels of various sizes.

Further, in the manufacturing process of the touch display device, the flexible circuit board and the printed circuit board must be assembled at all times. Accordingly, there is no need to change the system (PCB / component) design according to the position of the flexible circuit board in different sizes of touch display devices, and it is possible to provide ports and positions that are all used equally, A touch display device is needed.

SUMMARY OF THE INVENTION In view of the above technical problems, it is an object of the present invention to provide a touch screen display device and a method of manufacturing the touch screen display device, The present invention provides a touch display device capable of providing a port and a position that are used in the same manner, thereby improving the drawbacks of the conventional touch display device.

For the purpose of this invention, the present invention provides a touch display device comprising a protective panel, a display panel, a touch panel, a flexible circuit board, a driver circuit, a plurality of pins and a protective layer. The touch panel includes a sensing electrode layer and at least one signal line electrically connected to the sensing electrode layer, and the sensing electrode layer and the sensing electrode layer are electrically connected to each other. Wherein the flexible printed circuit board is coupled to an edge of the touch panel, wherein the flexible circuit board has a length shorter than a length of the edge of the flexible printed circuit board, and the edge of the edge of the touch panel from the intersection of the diagonal lines of the touch panel And is basically located at the center of the edge. The driving circuit is provided on the flexible circuit board and is electrically connected to at least one signal line for driving the touch panel. The plurality of pins are provided at the other end of the flexible circuit board to electrically connect the driving circuit, And the driving circuit.

The touch panel may further include a visible region that is smaller than the area of the touch panel and a shield layer that defines an invisible region located at an edge of the touch panel.

Preferably, the plurality of sensing electrodes at each edge of the touch panel are partially blocked by a driving circuit electrically connected to the plurality of sensing electrodes, thereby reducing electromagnetic interference at each edge of the touch panel.

The protective layer may further include an electromagnetic interference (EMI) protective layer and an insulating protective layer for insulation between the driving circuit and the touch panel.

It is preferable that the present invention can further include a plurality of ground holes passing through the flexible circuit board, the driving circuit and the protection layer so as to increase the noise transmission speed of the touch display device.

It is preferable that the present invention can be fixed in position and spacing between the flexible circuit board, the driving circuit, the ground hole and the plurality of pins so as to be applied to touch panels, display panels and protective panels of different sizes.

At least one signal line is provided on at least one edge of the touch panel, and it is preferable that laser processing can be performed so as to reduce at least one signal line.

In the present invention, it is preferable that the length of the flexible circuit board extending from the edge of the touch panel to the outside is at least the flexible circuit board is folded down to the display panel so as to be connected to the system main board of the drive touch display apparatus.

Preferably, the number of pins is six.

The types of ports of a plurality of pins include a universal serial bus (USB), a universal asynchronous receiver / transmitter (UART) bus-bar, and an internal integrated circuit bus It is preferable that the above-mentioned information can be included.

The touch display device of the present invention has a system (PCB / component) design according to the position of the flexible circuit board of the touch display device of different sizes, because the positions of the flexible circuit board, the driving circuit, It is possible to provide a port and an application position which are all used equally regardless of the size and thickness.

In addition, the touch display device according to the present invention is advantageous in reducing the electromagnetic interference and the noise received by the touch display device by designing to cut off the edge of the touch panel using a special pin and to arrange a plurality of ground holes specially , And can pass relatively stringent electromagnetic compatibility tests.

1 is a plan view of a touch display device according to an embodiment of the present invention.
2 is an exploded perspective view of a touch display device according to an embodiment of the present invention.
3 is a plan view of a touch panel according to an embodiment of the present invention.
4 is a cross-sectional view of a touch display device according to an embodiment of the present invention.
5 is a partially enlarged view of a flexible circuit board of the touch display device of the present invention.
6 is an enlarged view of the A portion of the pin of Fig.
7 is a schematic view in a situation of different sizes using the touch display device of the present invention.
8A to 8C are schematic views of the electromagnetic compatibility test procedure for the touch display device of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. The illustrated illustrations are used merely to aid in the description and do not represent the exact proportions and exact placement of the embodiments of the present invention. The embodiments of the present invention are limited only by the claims, and should not be construed or limited by the ratios and arrangements of the accompanying drawings.

Hereinafter, an embodiment of the touch display device according to the present invention will be described with reference to the related drawings. In order to facilitate understanding, the same assemblies in the following embodiments are denoted by the same reference numerals. The details are as follows.

FIG. 1 is an exploded perspective view of a touch display device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a touch display device according to an embodiment of the present invention, FIG. And FIG. 4 is a cross-sectional view according to an embodiment of the touch display device of the present invention.

1 to 4, the present invention is a display device including a protective panel 100, a display panel 110, a touch panel 120, a flexible circuit board 12, a driving circuit 122, A touch display device (1) is provided. The purpose of the cover panel 100 is to protect the lower touch panel 120, the display panel 110, and the like and to prevent scratches, fingerprints and contamination, thereby improving the appearance. The protective panel 100 may be formed of any suitable material such as scratch resistant, hard coat, antireflection (AR), antiglare, antifouling, anti- And so on. The display panel 110 is installed below the protection panel 100 and the touch panel 120 is installed between the display panel 110 and the protection panel 100. The touch panel 120 further includes a shielding layer 1202 that divides the touch panel 120 into two regions, that is, a visible region (VR) and an invisible region (IR) .

The touch panel 120 includes a sensing electrode layer 1201 and further includes a signal line 1204 having one end connected to a plurality of sensing electrodes 1203 of the sensing electrode layer 1201 at an edge of the touch panel 120. One end of the flexible circuit board 12 is coupled to the edge of the touch panel 120. The flexible circuit board 12 may be formed in one direction D1 of one of the edges of the touch panel 120 from the intersection of diagonal lines DL of the touch panel 120, And does not limit the extension from the long edge of the touch panel 120. A lead wire 121 electrically connected to the other end of the signal line 1204 is provided at one end of the touch panel 120 near the flexible circuit board 12 and the quantity of the lead wire 121 is at least the quantity of the signal line 1204 That is, the number of the lead wires 121 may be equal to or greater than the number of the signal wires 1204. Here, the circuit processing of the touch panel can replace the conventional printing processing by the laser processing so that the touch display device 1 of the present invention can meet the requirements of the inner low-bezel design, and the design of the signal line 1204 is reduced do.

According to the touch display device 1 of the present invention, the drive circuit 122 further includes a drive control integrated circuit (IC) for driving the touch panel 120. The drive circuit 122 is connected to the flexible circuit board 12 And the plurality of sensing electrodes 1203 through the sensing electrode layer 1201 transmit sensed touch signals to the driving circuit 122 through the conductive lines 121 and drive control integrated (Not shown) using the pin 123 of the flexible printed circuit board 12, and then transmits the digital data to the system main board (not shown). The display panel 110 includes various display devices such as a light emitting diode display, an organic light emitting diode display, and a liquid crystal display, and the display panel 110 includes an assembly for driving a transistor, a polarizing plate, a backlight module, Which are known to those of ordinary skill in the art to which this invention belongs, and will not be described here anymore.

Referring to FIG. 4, the sensing electrode layer 1201 of the touch panel 120 may be a plurality of sensing electrodes 1203, which are transparent conductive electrodes having a plurality of different directions, for example, a conductive pattern having indium tin oxide Or a conductive pattern material such as a metal lattice plate or a metal nanowire made of other conductive material such as metal is used and a conductive pattern material having a different direction is adhered with an optical clear adhesive (OCA) And a sensing electrode layer 1201 is fabricated. In addition, an EMI (ElectroMagnetic Interference) protection layer 1241 for preventing electromagnetic interference may be coated on the outside of the lead 121. In addition, the insulating protective layer 1242 may be further coated on the outside of the driving circuit 122 and the flexible circuit board to prevent a short circuit in the assembling process. The electromagnetic interference protection layer 1241 is not limited to the outside of the lead 121 but may be formed on the outside of the driving circuit 122 and the sensing electrode layer 1201 in accordance with a request to reduce the electromagnetic interference of the two portions. Can be installed.

5 is a partially enlarged view of a flexible circuit board of the touch display device of the present invention. Hereinafter, the flexible circuit board 12 of the touch display device 1 will be described with reference to FIG. As shown in Fig. 5, a plurality of ground holes 1221 pass through the flexible circuit board 12, the driving circuit 122, and the insulating protection layer 1242. This ground hole 1221 can increase the sound transmission speed of the touch display device 1. [ The number of the ground holes 1221 is not limited to that shown in the drawings, and it is preferable to use four to further increase the sound transmission speed of the touch display device 1. [ The other end of the flexible circuit board 12 is provided with a plurality of pins 123 electrically connected to the lead 121 through the drive circuit 122. In a preferred embodiment of the present invention, the number of pins 123 may be six and may provide a variety of different ports for assembly. The types of ports include a universal serial bus (USB), a universal asynchronous receiver / transmitter (UART) bus-bar, and an inter-integrated circuit bus. The various embodiments of the pin 123 are as shown in Table 1 below, and the specifications defined herein are for illustrative purposes only and are not intended to be limiting.

Figure 112015053769415-utm00001

1, the non-visible region IR is at the edge of the touch panel 120, the visible region VR is smaller than the area of the touch panel 120, The two sensing electrodes 1203 are also divided into two regions. Generally, the noise generated at the edge of the touch panel 120 is larger than that generated at the middle portion, so that the sensing electrode 1203 at the edge can be partially cut off. The sensing electrodes 1203 on the left, right, upper and lower edges of the touch panel 120 can be cut off through a driving circuit 122 electrically connected thereto to prevent the influence of signal interference, The sensing electrode 1203 at the single edge can be blocked alone. However, even if the pairing is performed, the sensing electrode 1203 at each edge is not blocked. In addition, a capacitor assembly may be further provided in the driving circuit 122 to absorb an instantaneous high voltage shock. Fig. 6 is an enlarged view of the A portion of the pin of Fig. 5, in which the pin 123 uses six pins, as shown in the figure, whereby the length of each pin in accordance with the preferred embodiment of the present invention L1) is 1 ± 0.1 mm, and different ports can be used in combination. The length L2 of the pin 123 may preferably be 3.5 +/- 0.1 mm, and the width L3 of the entire pin may be 7 + 0.07 / -0.12 mm.

According to a preferred embodiment of the present invention, the length of the flexible printed circuit board 12 extending from the edge of the touch panel 120 to the outside is at least the length of the flexible printed circuit board that is bent downwardly of the display panel, To be connected to a board (not shown). In other words, the length extending to the outside of the edge of the touch panel 120 has been considered to be used for all LCD thicknesses already on the market. The signal sensed by the sensing electrode 1203 calculates a coordinate value according to sensing data of the touch position through the driving control IC in the driving circuit 122. In addition, a plurality of lines are provided between the display panel and the system main board (not shown), and various signals are transmitted between the system main board and the display panel, for example, driving signals of the display panel Thereby completing the touch display operation.

Fig. 7 is a schematic view in a situation of different sizes using the touch display device of the present invention. Fig. As shown in FIG. 7, since the spacing between the positions of the flexible circuit board, the driving circuit, the ground hole, and the pins is the same regardless of the size, there is no need to change the design of any system main board on the assembly, The application and the series model of the device can be easily applied to the development and the port and position of the driving circuit and the pin are not changed according to the size change of the protective panel, the touch panel and the display panel. Therefore, , A display or a panel, and the touch display device of the present invention provides convenience in assembly. For example, according to the size of the screen currently sold in the market, the touch display device of the present invention can be applied to a screen size such as 10.1 "W to 21.5 " W, and the design of the next generation model is the same, And can be applied regardless of 7, W means that the screen sizes are 16: 9 and 16:10, and W means that the screen size is 4: 3.

8A to 8C are schematic diagrams in which the touch display device of the present invention is subjected to the electromagnetic compatibility test. There is a relatively high demand for the EMC test environment in order to ensure the importance, accuracy and reliability of the duplication and EMC test results of complicated electromagnetic noise environments, and to effectively measure the noise generated in the actual equipment to be measured. (Transverse electromagnetic EMC measurement room including TEM / GTEM Cell), an anechoic chamber and an open area test site (OATS). A brief description of the functions, building materials, and constraints of such an EMC test site is as follows: In the isolation chamber, the isolation chamber construction method, on the one hand, shields the interference of the electromagnetic motor from the outside, And on the other hand shields the sources such as the internal antenna to prevent interference to the outside world. The touch display device of the present invention was able to satisfy various electromagnetic immunity tests of the portable electronic device as a result of the test. Among them, it meets the requirements of CS (Conducted Susceptibility) and Radiated Resistance (RS), and the conducted resistance is the product's power line and other input / output cable (I / O) (CDN) injection test (FIG. 8B) and electromagnetic clamp injection test (FIG. 8C) as shown in the schematic diagram. (RF) signal is injected through a wave energy attenuator (T2), and the radiated susceptibility (RS) is the ability to tolerate the EMI propagated through the free space of the product, and the electromagnetic immunity EMS includes CS and RS) The main contents of the test are as follows: 1, radiation immunity test for electric field, magnetic field; 2, Conduction immunity test for interference injected to power line, control line, signal line, ground line, etc.; 3, Immunity test for electrostatic discharge and various instantaneous electromagnetic waves (transient voltage or electrical fast transient). The touch display device of this invention has passed the commercial safety IEC / EN 61000-4-6 and Radiated Susceptibility (RS) commercial safety IEC / EN 61000-4-3 test results . The results of the tests of CS and RS are shown in the drawings to avoid ambiguity of the present invention, but such tests are not described herein as they are known to those of ordinary skill in the art to which this invention belongs.

In general, the touch display device of the present invention has the same positions of the flexible circuit board, the driving circuit, the grounding hole, and the pin in any size, / Part) Provides ports and application locations that do not need to be altered in design, and all use the same size, even if they differ in size and thickness.

In addition, the touch display device according to the present invention is advantageous in reducing the electromagnetic interference and the noise received by the touch display device by designing to cut off the edge of the touch panel using a special pin and to arrange a plurality of ground holes specially , And can pass relatively stringent electromagnetic compatibility tests.

Although specific embodiments of the present invention have been described with reference to the drawings, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as defined by the appended claims. . Such modifications and variations are intended to fall within the scope of the invention as defined by the appended claims.

1: touch display device 100: protective panel
110: display panel 120: touch panel
12: flexible circuit board 121: conductor
122: drive circuit 123: pin
1201: sensing electrode layer 1202: shielding layer
1203: sensing electrode 1204: signal line
1221: ground hole 1242: insulating protection layer
1241: electromagnetic interference protection layer VR: visible region
IR: Invisible area DL: Diagonal
D1: direction L1, L2: length
L3: width A: part

Claims (10)

Protective panel;
A display panel disposed below the protective panel;
A touch panel disposed between the display panel and the protection panel, the touch panel including a sensing electrode layer including a plurality of sensing electrodes and at least one signal line electrically connected to the sensing electrode layer;
The touch panel is coupled to an edge of the touch panel and is shorter than a length of the edge and extends outwardly in a direction perpendicular to one side of the edge of the touch panel from a crossing point of the diagonal line of the touch panel, And a lead wire connected to the at least one signal line is provided at one end near the touch panel, and the number of the lead wires is at least a number of flexible printed circuit boards corresponding to the number of the at least one signal line, ;
A driver circuit installed on the flexible circuit board and electrically connected to the at least one signal line to drive the touch panel;
A plurality of pins provided at the other end of the flexible circuit board and electrically connecting the drive circuit; And
And a protective layer disposed to cover the flexible circuit board and the driving circuit. The method according to claim 1,
Wherein the touch panel further comprises a shield layer which defines a visible area smaller than the area of the touch panel and an invisible area located at an edge of the touch panel. 3. The method of claim 2,
Wherein the plurality of sensing electrodes at each edge of the touch panel are partially blocked by the drive circuit electrically connected to the plurality of sensing electrodes to reduce electromagnetic interference at each edge of the touch panel. Display device. The method according to claim 1,
Wherein the protective layer further comprises an insulating protective layer between the driving circuit and the touch panel to isolate it from an electromagnetic interference (EMI) protective layer. The method according to claim 1,
Further comprising: a plurality of ground holes passing through the flexible circuit board, the driving circuit, and the protection layer so as to increase a noise conduction speed of the touch display device. 6. The method of claim 5,
Wherein a position and an interval between the flexible circuit board, the driving circuit, the ground hole, and the plurality of pins are fixed for application to touch panels, display panels, and protection panels of different sizes. The method according to claim 1,
Wherein the at least one signal line is provided on at least one edge of the touch panel, and laser processing is performed to reduce the at least one signal line. The method according to claim 1,
The flexible printed circuit board is bent to the lower side of the display panel so that a length of the flexible printed circuit board extending from the edge of the touch panel to the outside can be connected to a system main board driving the touch display device. / RTI > The method according to claim 1,
Wherein the number of the plurality of pins is six. The method according to claim 1,
The types of the ports of the plurality of pins include a universal serial bus (USB), a universal asynchronous receiver / transmitter (UART) bus-bar, and an integrated- Wherein the display device includes a touch panel.
KR2020150003568U 2014-12-03 2015-06-03 Touch display device KR200481966Y1 (en)

Applications Claiming Priority (2)

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TW103221451 2014-12-03
TW103221451U TWM509378U (en) 2014-12-03 2014-12-03 Touch display device

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CN106921378B (en) * 2015-12-24 2021-06-29 小米科技有限责任公司 Touch key module and mobile terminal
CN106921377B (en) * 2015-12-24 2020-06-02 小米科技有限责任公司 Touch key module, key icon display method and device
CN107124823A (en) * 2017-06-12 2017-09-01 北京大明五洲科技有限公司 A kind of touch-control circuit plate and wearable device
CN110189672B (en) * 2019-06-27 2023-03-28 京东方科技集团股份有限公司 Display panel, detection method thereof and display device
CN111142712B (en) * 2019-12-31 2023-07-18 信利（惠州）智能显示有限公司 Flexible circuit board, display module and display screen
CN111524883B (en) * 2020-04-29 2022-09-20 业成科技（成都）有限公司 In-film electronic assembly and preparation method thereof
CN113031699A (en) * 2021-03-15 2021-06-25 维沃移动通信有限公司 Screen assembly of terminal and terminal equipment

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KR101913258B1 (en) * 2012-05-23 2018-10-30 엘지전자 주식회사 Touch panel and display device comprising the same

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