Patent Application
20160162083
This application claims a priority to Chinese Patent Application No. 201410735371.4 filed on Dec. 5, 2014, the disclosure of which is incorporated in its entirety by reference herein.
The present disclosure relates to the field of touch display technology, in particular to a touch display panel and a touch display device.
Currently, taking a note book (NB) as an example, a control circuit of a touch display device mainly includes an Edge to Panel (ETP) structure and an Edge to Edge (ETE) structure.
The Edge to Panel in the ETP structure refers that one control board is located at an edge side of the touch display panel. Specifically, as shown in
The Edge to Edge in the ETE structure refers that two different control boards are located at two opposite edge sides of the touch display panel, respectively. Specifically, as shown in
However, in the ETP structure, as the touch driving circuit is directly formed at the FPC which has a high cost, it may increase the overall cost and difficulties of performing SMT on the touch driving circuit, thereby to increase the defect rate of SMT.
In the ETE structure, as the touch driving circuit is formed at an extra control board, additional touch circuit connectors are required, so that cost of Bill of Materials (BOM) of products is significantly increased.
Therefore, it is one of the most urgent problems to provide a touch display panel which may improve the yield when performing SMT on the touch driving circuit process and reduce the cost of materials.
An object of the present disclosure is to provide a touch display panel and a touch display device, so as to improve the yield when performing Surface Mount Technology (SMT) process on a touch driving circuit and reduce cost of materials, thereby to further increase product profits.
In one aspect, the present disclosure provides in an embodiment a touch display panel, including a touch display panel body, a control board and a display circuit connection board,
Alternatively, a touch circuit connector which connects the touch circuit connection board and the control board is arranged on the control board.
Alternatively, the touch display panel body includes a touch driving electrode and a touch sensing electrode which are insulated from each other; and
Alternatively, a system connector is arranged on the control board, the system connector is configured to electrically connect the control board and a system circuit connection board.
Alternatively, the control board is made by a printed circuit board.
Alternatively, the display circuit connection board is made by a flexible printed circuit board.
Alternatively, wherein the touch circuit connection board is made by a flexible printed circuit board.
In another aspect, the present disclosure provides in embodiments a touch display device, including the above-mentioned touch display panel.
Alternatively, the touch display device further includes a keyboard device.
Alternatively, a system connector is arranged on the control board of the touch display panel;
According to embodiments of the present disclosure, for the above-mentioned touch display panel, the display driving circuit which is electrically connected to the touch display panel body through the display circuit connection board, is arranged at one same control board with the touch driving circuit which is electrically connected to the touch display panel body through the touch circuit connection board, so as to improves the yield when performing Surface Mount Technology (SMT) on the above two circuits which may achieve touch and display functions, and prevent cost of the Bill of Material (BOM) from increasing due to an extra structure such as the control board, thereby to further increase profits of the touch display product.
In order to illustrate embodiments of the present disclosure and the technical solution in the prior art more clearly, drawings required therein will be described briefly hereinafter. Apparently, drawings described below are merely some examples of the present disclosure, it would be appreciated that a person skilled in the art may also obtain other drawings in accordance with these drawings without creative effort.
The technical solutions and the advantages of the present disclosure more apparent, the present disclosure will be described hereinafter in a clear and complete manner in conjunction with the drawings and embodiments. Apparently, the following embodiments are merely a part of, rather than all of, the embodiments of the present disclosure, and based on these embodiments, a person skilled in the art may obtain the other embodiments, which also fall within the scope of the present disclosure.
The present disclosure provides in embodiments a touch display panel 01, as shown in
It should note that the touch display panel body 10 may be, for example, a Touch On Cell type, i.e., attaching a touch panel formed with a touch driving electrode (Tx) and a touch sensing electrode (Rx) to a display side of a display panel; or the touch display panel body 10 may also be a Touch In Cell type, i.e., the touch driving electrode (Tx) and the touch sensing electrode (Rx) are formed at an internal side of the display panel, for example, formed at a color filter substrate of a liquid display panel, or formed at a cover plate of an organic electroluminescence display panel, which is not limited herein by embodiments of the present disclosure.
Further, in the above-mentioned touch display panel 01 according to embodiments of the present disclosure, the display circuit connection board 30 and/or the touch circuit connection board 40 are/is connected to the control board 20 in a manner, including but not limited to, for example, thermo-compression, glue mounting (eg., conductive silver adhesives), or electrically connecting by a connector (eg., a connecting terminal).
Herein, the display circuit connection board 30 and/or the touch circuit connection board 40 may be but not limited to, for example, Chip On Film (COF), Tape Automatic Bonding (TAB), Flexible Printed Circuit (FPC), or Printed Circuit Board (PCB).
Besides, there may be two display circuit connection boards 30 as shown in
Based on the above, in the touch display panel 01 according to embodiments of the present disclosure, as the display driving circuit 31 which is electrically connected to the touch display panel body 10 through the display circuit connection board 30, is arranged at one same control board 20 with the touch driving circuit 41 which is electrically connected to the touch display panel body 10 through the touch circuit connection board 40, so as to improves the yield when performing Surface Mount Technology (SMT) on the above two circuits which may achieve touch and display functions, and prevent cost of the Bill of Material (BOM) from increasing due to an extra structure such as the control board, thereby to further increase profits of the touch display product.
Further, as shown in
Further, the touch display panel body 10 includes a touch driving electrode Tx and a touch sensing electrode Rx which are insulated from each other; the touch circuit connection board 40 is electrically connected to the touch driving electrode and the touch sensing electrode through a touch connection line and a sensing connection line, respectively.
Herein, in order to simplify the manufacture process of the touch circuit, the touch connection line and the sensing connection line may be directly formed at the touch circuit connection board 40, and connected with the touch driving electrode, the touch sensing electrode together through a bonding process, so as to achieve an electrical connection of relative structures.
Further, as shown in
Specifically, the system connector 21 may include, for example, a connection terminal and a connection line leaded out from the connection terminal, wherein the other end of the connection line is connected to the system circuit board.
Herein, the system circuit panel includes a plurality of components for controlling the touch display panel 01, for example, a central processing unit (CPU), a main memory, a buffer, and other controlling and connecting components. The system circuit panel may output a corresponding image signal to the control board 20, the display circuit connection board 30 drives the touch display panel body 10 to display the corresponding image through the display driving circuit 31 which is electrically connected to the control board 20. In addition, the system circuit board may also receive a corresponding touch signal (eg., position coordinates of a touch point) transmitted by the touch driving electrode 41, and control the touch display panel body 10 to make a corresponding control and achieve an image display function through the touch circuit connection board 40
Base on the above, as a plurality of circuit structures are integrated on the control board 20, then optionally the control board 20 is made by a printed circuit board (PCB) which is easy to form a circuit.
Besides, as the display circuit connection board 30 is required to be connected to a gate driving circuit, a source driving circuit or other circuits in the touch display panel body 10, while the above driving circuits are generally located inside the touch display panel body 10, with the limitation by overall space of the touch display panel, the circuit panel usually requires a certain flexibility during connecting, as a result, the display circuit connection board 30 may be made by a flexible printed circuit (FPC).
Similarly, the touch driving electrode Tx and the touch sensing electrode Rx are also generally located inside the touch display panel body 10, with the limitation by overall space of the touch display panel, the touch circuit connection board 40 may be bended when connecting to Tx and Rx, as a result, the touch circuit connection board 40 may be made by a flexible printed circuit (FPC) having flexibility.
Further, the present disclosure further provides in embodiments a touch display device, including the above-mentioned touch display panel 01.
Based on the above, the touch display device may be a note book (NB), as shown in
Further, as shown in
It should note that all drawings in the present disclosure are brief schematic views for the above-mentioned touch display panels, merely for clearly describing the structures related to the technical solution of the present disclosure; other structures unrelated to the technical solution of the present disclosure are existing structures in the related art, which are not shown or partially shown in the drawings.
The above are merely the specific embodiments of the present disclosure, the scope of the present disclosure is not limited hereto. It should be noted that, a person skilled in the art may further make improvements and modifications without departing from the principle of the present disclosure, and these improvements and modifications shall also be considered as the scope of the present disclosure, therefore the scope of the present disclosure shall base on the following claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201410735371.4 | Dec 2014 | CN | national |
