CN219105471U

CN219105471U - In-cell touch display module and POS machine thereof

Info

Publication number: CN219105471U
Application number: CN202223421072.2U
Authority: CN
Inventors: 洪健峰; 徐强武; 张秋普
Original assignee: CPT Technology Group Co Ltd
Current assignee: CPT Technology Group Co Ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-05-30
Anticipated expiration: 2032-12-20

Abstract

The utility model provides an In-cell touch display module and a POS machine thereof, wherein the In-cell touch display module comprises an In-cell touch screen, a glass cover plate and an FPC (flexible printed circuit) circuit board; the lower part of the front surface of the In-cell touch screen is provided with a TDDI chip; the glass cover plate covers the front surface of the In-cell touch screen; the FPC circuit board comprises a connecting part, a first extending part and a second extending part; the connecting part is connected to the TDDI chip at the lower part of the front surface of the In-cell touch screen, and is folded at the back surface of the In-cell touch screen along the bottom of the In-cell touch screen, the first extending part is folded and stuck right above the second extending part, the end part of the first extending part is provided with a touch interface, the end part of the second extending part is provided with a display interface, and the touch interface and the display interface are electrically connected with the TDDI chip through the connecting part. The utility model aims to provide the touch screen device which is used for modifying a single interface of the In-cell touch screen FPC circuit board into a touch interface to be separated from a display interface, and a control main board circuit of the conventional touch screen device is not required to be redesigned, so that the design difficulty and the design cost are reduced.

Description

In-cell touch display module and POS machine thereof

Technical Field

The utility model relates to the technical field of touch control, in particular to an In-cell touch control display module.

Background

In-cell touch technology refers to a touch technology In which a touch function is embedded In a display panel, and along with continuous progress of flat panel display technology, more and more display devices are configured with touch screens, and for capacitive sensing touch screens, in-cell touch technology is the main stream In the touch field, and is rapidly developed and widely applied by virtue of low cost, low power consumption, thin thickness, and capability of realizing multi-point touch.

The touch screen used by the existing handheld POS machine uses an externally hung touch display screen, as shown in FIG. 1, which comprises an externally hung TP1 'and a liquid crystal display screen 2', wherein the externally hung TP1 'is provided with a touch module 11', the liquid crystal display screen 2 'is provided with a display module 21', the externally hung TP1 'and the liquid crystal display screen 2' are attached to form two interfaces, and the handheld POS machine and the corresponding handheld POS machine are provided with two connectors on a control main board. The In-Cell touch screen is loaded with a circuit, which uses a TDDI chip (touch and display driver integrated chip), and only has one touch and display integrated interface, if the existing handheld POS machine needs to directly use the In-Cell touch screen, the original control main board circuit of the POS machine needs to be matched with the In-Cell touch screen to be changed into a connector, and the design of the internal circuit of the main board needs to be redesigned, so that the difficulty and the design cost are increased.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the touch screen device which is characterized In that a single interface of an In-cell touch screen FPC circuit board is transformed into a touch interface which is separated from a display interface, and a control main board circuit of the conventional touch screen device is not required to be redesigned, so that the design difficulty and the design cost are reduced.

The utility model is realized in the following way: in a first aspect, an In-cell touch display module includes an In-cell touch screen, a glass cover plate, and an FPC board; the lower part of the front surface of the In-cell touch screen is provided with a TDDI chip; the glass cover plate covers the front face of the In-cell touch screen; the FPC circuit board comprises a connecting part, a first extending part and a second extending part; the connecting portion is connected to the TDDI chip on the lower portion of the front face of the In-cell touch screen, the TDDI chip is folded to the back face of the In-cell touch screen along the bottom of the In-cell touch screen, the first extending portion is folded and adhered to the position right above the second extending portion, a touch interface is arranged at the end portion of the first extending portion, a display interface is arranged at the end portion of the second extending portion, and the touch interface and the display interface are electrically connected with the TDDI chip through the connecting portion.

Furthermore, the first extension part and the second extension part are both provided with sticking areas.

Further, the first extension portion and the second extension portion are both L-shaped, and the first extension portion is semi-enclosed in the second extension portion.

Further, a folding line is arranged on the first extension part.

In a second aspect, a POS machine includes a control motherboard, where the In-cell touch display module according to the first aspect, the first extension portion and the second extension portion are respectively connected to the control motherboard.

The utility model has the advantages that: the utility model changes a single interface of an In-cell touch screen FPC circuit board into a touch interface which is separated from a display interface, folds and pastes the two interfaces on the same structural plane, the interface for adapting to the touch control and liquid crystal display of the existing touch control screen equipment does not need to redesign the control main board circuit of the existing equipment, and the design difficulty and the design cost are reduced.

Drawings

The utility model will be further described with reference to examples of embodiments with reference to the accompanying drawings.

FIG. 1 is a schematic view of a touch and display module assembly structure of a touch display screen of the prior art.

Fig. 2 is a schematic diagram illustrating a connection unfolding state of the front surface of an In-cell touch screen and an FPC board according to an embodiment of the present utility model.

Fig. 3 is a schematic diagram of a state In which an FPC board is folded on the back surface of the In-cell touch screen according to an embodiment of the present utility model.

Fig. 4 is a schematic diagram illustrating a folded state of an FPC board according to an embodiment of the present utility model.

Reference numerals illustrate: the touch screen comprises an In-cell touch screen 1, a TDDI chip 11, a glass cover plate 2, an FPC board 3, a connecting portion 31, a first extending portion 32, a touch interface 321, a folding line 322, a second extending portion 33, a display interface 331 and an adhesive area 34.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 2 to 4, an In-cell touch display module of the present utility model includes an In-cell touch screen 1, a glass cover plate 2, and an FPC board 3; the lower part of the front surface of the In-cell touch screen 1 is provided with a TDDI chip 11; the glass cover plate 2 covers the front surface of the In-cell touch screen 1; the FPC board 3 includes a connection portion 31, a first extension portion 32 and a second extension portion 33; the first extension portion 32 and the second extension portion 33 are both L-shaped, and the first extension portion 32 is semi-enclosed in the second extension portion 33. The connection portion 31 is connected to the TDDI chip 11 on the lower portion of the front surface of the In-cell touch screen 1, and is folded along the bottom of the In-cell touch screen 1 to the back surface of the In-cell touch screen 1, a touch interface 321 is disposed at the end of the first extension portion 32, a display interface 331 is disposed at the end of the second extension portion 33, adhesive areas 34 are disposed on the first extension portion 32 and the second extension portion 33, a folding line 322 is disposed on the first extension portion 32, the first extension portion 32 is folded and turned 180 degrees along the folding line 322, is folded and adhered over the second extension portion 33 through the adhesive areas 34, the touch interface 321 and the display interface 331 are staggered, and the touch interface 321 and the display interface 331 are electrically connected with the TDDI chip 11 through the connection portion 31.

According to the touch display module provided by the embodiment of the utility model, the first extension part 32 and the second extension part 33 on the FPC circuit board 3 are arranged to be two connectors which can be folded and pasted, so that the two connectors of the product control main board are butted, and when the product uses the In-cell touch screen 1, the touch display module can be used without changing the control main board circuit of the product.

In the processing process of the FPC board 3, the FPC board 3 is first unfolded, that is, the first extension portion 32 and the second extension portion 33 are unfolded to form a plane, then electronic components, wires, copper-clad components and the like corresponding to related touch modules are arranged on the first extension portion 32, components, wires, copper-clad components and the like corresponding to display modules are arranged on the second extension portion 33, in order to avoid interference formed after folding between the first extension portion 32 and the second extension portion 33, the electronic components, wires and copper-clad components of the first extension portion 32 and the second extension portion 33 are respectively arranged on the front surface and the rear surface of the FPC board 3, and the electronic components and copper-clad components are not arranged at the folding position of the first extension portion 32, so that breakage of the electronic components or copper-clad components after folding is avoided.

In the manufacturing process, firstly, electronic components and the like on the FPC board 3 are welded, then the first extension part 32 is folded on the second extension part 33 along the folding line 322, and the two sides of the first extension part are pressed together through the conductive double-sided adhesive of the adhesive area 34 to form an integrated touch display module which is provided with two connectors, then, testing is carried out, and after the testing is finished, the manufacturing is finished.

Example two

The POS machine comprises a control main board, the In-cell touch display module according to the first embodiment, the first extension portion 32 and the second extension portion 33 are respectively connected with two connectors of the control main board, and the control main board circuit of the existing POS machine is not required to be redesigned, so that the design of an electronic circuit is reduced, and the design cost is reduced.

Other components such as control boards and the like and operation of the POS machine according to the second embodiment of the present utility model are known to those skilled in the art, and will not be described in detail herein.

According to the utility model, a single integrated interface of the FPC circuit board of the In-cell touch screen is changed into a touch interface to be separated from a display interface, and the two interfaces are folded and pasted on the same structural surface, so that the touch screen device is suitable for interfaces of two independent modules of touch control and liquid crystal display of the conventional touch screen device, a control main board circuit of the conventional device is not required to be redesigned, the design of an electronic circuit is reduced, and the design cost is reduced.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the utility model, and that equivalent modifications and variations of the utility model in light of the spirit of the utility model will be covered by the claims of the present utility model.

Claims

1. An In-cell touch display module, characterized In that: comprising

The In-cell touch screen is provided with a TDDI chip at the lower part of the front surface;

the glass cover plate covers the front surface of the In-cell touch screen; a kind of electronic device with high-pressure air-conditioning system

The FPC circuit board comprises a connecting part, a first extending part and a second extending part; the connecting portion is connected to the TDDI chip on the lower portion of the front face of the In-cell touch screen, the TDDI chip is folded to the back face of the In-cell touch screen along the bottom of the In-cell touch screen, the first extending portion is folded and adhered to the position right above the second extending portion, a touch interface is arranged at the end portion of the first extending portion, a display interface is arranged at the end portion of the second extending portion, and the touch interface and the display interface are electrically connected with the TDDI chip through the connecting portion.

2. The In-cell touch display module according to claim 1, wherein: the first extension part and the second extension part are both provided with sticking areas.

3. The In-cell touch display module according to claim 1, wherein: the first extending part and the second extending part are L-shaped, and the first extending part is semi-enclosed in the second extending part.

4. The In-cell touch display module according to claim 1, wherein: the first extension part is provided with a folding line.

5. The POS machine comprises a control main board, and is characterized In that the In-cell touch display module according to any one of claims 1-4, wherein the first extension part and the second extension part are respectively connected with the control main board.