CN105223714B - module structure of touch display panel - Google Patents

Abstract

The present invention is a module structure of a touch display panel, which includes a backlight module, a liquid crystal panel, a touch layer, a first circuit board, a second circuit board, and a protective layer. The liquid crystal panel is located on the backlight module, the touch layer is located on the liquid crystal panel, the first circuit board is located on the liquid crystal panel, and is located on a first side of the liquid crystal panel and a first side of the touch layer. The second circuit board is located on the liquid crystal panel, and is located on a second side of the liquid crystal panel and a second side of the touch layer, and the protective layer is located on the touch layer, the first circuit board, and the second circuit board.

Description

Module structure of touch display panel

technical field

The present invention relates to a module structure of a touch display panel, in particular to a module structure of a touch display panel with an embedded (On cell, Incell) touch function.

Background technique

The current combination of touch panel and display panel is divided into on-cell (On cell, In cell) and the plug-in type where the touch panel and the display panel are directly bonded together. However, the plug-in method causes the touch panel and display After the panel is combined, it has the disadvantages of being too thick and bulky. Therefore, the in-cell type is generally used as the combination of the touch panel and the display panel.

Furthermore, in general in-cell touch display panels, only the touch graphics in the display area are made on the substrate of the color filter (Color Filter, CF), and the physical keys are not connected with the touch control of the touch display panel. The panels are integrated on the same substrate, so they cannot meet the functional specifications required by innovative products.

In view of the above problems, the present invention proposes a module structure of a touch display panel to meet the requirements of innovative products.

Contents of the invention

One of the objectives of the present invention is to provide a module structure of a touch display panel, which integrates the touch functions of the embedded touch panel and physical buttons on the same substrate, so as to meet the needs of innovative products.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A module structure of a touch display panel, characterized in that it comprises:

a backlight module;

a liquid crystal panel located on the backlight module;

a touch layer located on the liquid crystal panel;

A first circuit board is located on the liquid crystal panel, and is located on a first side of the liquid crystal panel and a first side of the touch layer;

a second circuit board located on the liquid crystal panel and located on a second side of the liquid crystal panel and a second side of the touch layer; and

A protection layer is located on the touch layer, the first circuit board and the second circuit board.

In a preferred technical solution, the first circuit board is exchanged on the second side, and the second circuit board is exchanged on the first side.

In a preferred technical solution, it also includes:

a polarizing film located between the backlight module and the liquid crystal panel;

a touch chip located on the surface of the first circuit board;

an upper polarizing film located between the protective layer and the liquid crystal panel; and

An adhesive layer is located between the upper polarizing film and the protection layer.

In a preferred technical solution, the liquid crystal panel includes:

The lower substrate is located on the lower polarizing film;

a liquid crystal layer located on the lower substrate;

a third circuit board located on the surface of the lower substrate;

a display chip, located on the surface of the lower substrate, between the third circuit board and the liquid crystal layer, and electrically connected to the third circuit board; and

an upper substrate, located on the liquid crystal layer;

Wherein, the first circuit board and the second circuit board are located on the surface of the upper substrate.

In a preferred technical solution, the protective layer is made of glass material, plastic material or decorative film, and the thickness of the protective layer of glass material and plastic material is 0.5-0.7mm, and the thickness of the protective layer of decorative film is 0.2mm.

In a preferred technical solution, at least one user interface pattern is arranged on the surface of the protective layer corresponding to the installation position of the second circuit board.

In a preferred technical solution, the second circuit board is a user interface circuit board.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A module structure of a touch display panel, characterized in that it comprises:

a backlight module;

a liquid crystal panel located on the backlight module;

a touch layer located on the liquid crystal panel;

at least one user interface element located on a first inner side of the edge of the touch layer;

a first circuit board located on the liquid crystal panel and located on a first side of the liquid crystal panel and a first side of the touch layer; and

A protective layer is located on the touch layer and the first circuit board.

In a preferred technical solution, the first circuit board is exchanged on a second side of the liquid crystal panel, and the user interface element is exchanged on a second inner side of the edge of the touch layer.

In a preferred technical solution, it also includes:

A diode light source is set in the backlight module corresponding to the set position of the user interface element.

In a preferred technical solution, the protective layer is made of glass material, plastic material or decorative film, and the thickness of the protective layer of glass material and plastic material is 0.5-0.7mm, and the thickness of the protective layer of decorative film is 0.2mm.

In a preferred technical solution, it also includes:

A supporting member is located on the backlight module to support the liquid crystal panel.

In a preferred technical solution, the surface of the protective layer is provided with the user interface graphic corresponding to the location of the user interface element.

Compared with the prior art, the present invention adopting the above technical solution has the advantage that the touch display panel of the present invention includes a backlight module, a liquid crystal panel, a touch layer, a first circuit board, and a second circuit board, a protective layer. The liquid crystal panel is located on the backlight module, the touch layer is located on the liquid crystal panel, the first circuit board is located on the liquid crystal panel, and is located on a first side of the liquid crystal panel and a first side of the touch layer. The second circuit board is located on the liquid crystal panel, and is located on a second side of the liquid crystal panel and a second side of the touch layer, and the protection layer is located on the touch layer, the first circuit board and the second circuit board. Furthermore, in the touch display panel of the present invention, a user interface component can be arranged in the touch layer without a second circuit board, or a user interface component can be arranged in the display area without a second circuit board and an additional circuit board. Light source settings. In this way, the technology mentioned in the embodiment of the present invention can achieve the effect of integrating the touch functions of the embedded touch panel and the physical buttons, and reducing the cost.

Description of drawings

1 is a top view of a first embodiment of a touch display panel of the present invention;

Fig. 2 is the first sectional view of the Z-Z ' line of Fig. 1;

Fig. 3 is the second sectional view of the Z-Z ' line of Fig. 1;

Fig. 4 is the 3rd sectional view of Z-Z ' line of Fig. 1;

Fig. 5 is the 4th sectional view of Z-Z ' line of Fig. 1;

6 is a top view of a second embodiment of the touch display panel of the present invention;

Fig. 7 is the first sectional view of A-A ' line of Fig. 6;

Fig. 8 is the second sectional view of A-A ' line of Fig. 6;

Fig. 9 is the third sectional view of the A-A ' line of Fig. 6;

Fig. 10 is the 4th sectional view of A-A ' line of Fig. 6;

11 is a top view of a third embodiment of the touch display panel of the present invention;

Fig. 12 is a sectional view of the B-B' line of Fig. 11;

13 is a top view of a fourth embodiment of the touch display panel of the present invention;

Fig. 14 is a sectional view taken along line C-C' of Fig. 13 .

Description of reference signs: 10-touch display panel; 20-protective layer; 30-touch area; 32-display area; 40-user interface graphics; 42-user interface graphics; 50-liquid crystal panel; 51-backlight module; 510-diode light source; 52-lower polarizing film; 53-lower substrate; 54-liquid crystal layer; 55-upper substrate; 56-touch layer; 57-upper polarizing film; 58-adhesive layer; 59-support; 60- 62-second circuit board; 64-third circuit board; 70-touch chip; 72-display chip; 80-first side; 82-second side; 84-first inner side; 86- Second inner side; 87 - first side; 88 - second side; 90 - user interface element.

Detailed ways

In order to enable your review committee members to have a further understanding and understanding of the characteristics of the present invention and the achieved effects, I would like to provide preferred embodiments and detailed descriptions, as follows:

Please refer to FIG. 1 and FIG. 2 , FIG. 1 is a top view of a first embodiment of a touch display panel 10 of the present invention, and FIG. 2 is a cross-sectional view along line Z-Z' of FIG. 1 . As shown in the figure, the touch display panel 10 of the present invention includes a backlight module 51 , a liquid crystal panel 50 , a touch layer 56 , a first circuit board 60 , a second circuit board 62 , and a protective layer 20 . The liquid crystal panel 50 is located on the backlight module 51, the touch layer 56 is located on the liquid crystal panel 50, the first circuit board 60 is located on the liquid crystal panel 50, and is located on a first side 80 of the liquid crystal panel 50 and a first side of the touch layer 56. Side 87. The second circuit board 62 is located on the liquid crystal panel 50, and is located on a second side 82 of the liquid crystal panel 50 and a second side 88 of the touch layer 56, and the protective layer 20 is located on the first circuit board 60, the liquid crystal panel 50 and the second side 88 of the touch layer 56. On the second circuit board 62 . Thus, in the touch display panel 10 of the present invention, the touch operation of the touch panel is designed on the touch layer 56, and the touch operation of the physical keys is designed on the second circuit board 62. Therefore, the touch display panel 10 of the present invention The touch functions of the embedded touch panel and the physical buttons are integrated on the liquid crystal panel 50 to meet the use requirements of innovative products.

1 and 2 again, the backlight module 51 is used to provide the light source required by the module structure of the touch display panel 105, the liquid crystal panel 50 is used to display the picture, and the touch layer 56 is a position where transparent electrodes are formed, such as driving electrodes and The detection electrodes and the drive electrodes receive a signal, and the detection electrodes detect the change of the signal to obtain touch information of the user's operation from the touch area 30 . The first circuit board 60 and the second circuit board 62 can be flexible printed circuit boards (Flexible Printed Circuit, FPC), and the second circuit board 62 can be a user interface circuit board, and has user interface element 90, and user interface element The light source of 90 may be provided by a diode light source 510, which is a light emitting diode (Light Emitting Diode, LED) as its name implies. Furthermore, the second circuit board 62 can be made of a translucent material, so that there is no shield between the diode light source 510 and the user interface element 90 . Therefore, the touch display panel 10 of the present invention obtains user touch information by virtue of the user interface elements 90 on the second circuit board 62. In addition, the present invention does not limit the number of user interface elements 90, and the design can be changed according to the requirements. . The protective layer 20 is used to prevent the interior of the panel from being damaged and external interference. Moreover, the protective layer 20 can be made of glass, plastic or decoration film. The thickness of the protective layer 20 made of glass or plastic is 0.5- 0.7 mm, the thickness of the protective layer 20 of the decoration film is 0.2 mm.

Moreover, the lower polarizing film 52 of the touch display panel 10 of the present invention is located between the backlight module 51 and the liquid crystal panel 50, and the upper polarizing film 57 is located between the protective layer 20 and the liquid crystal panel 50, and the touch display of the present invention The panel 10 further includes a touch chip 70 and an adhesive layer 58 . The touch chip 70 is located on the surface of the first circuit board 60 , and the adhesive layer 58 is located between the upper polarizing film 57 and the protection layer 20 . The liquid crystal panel 50 includes a lower substrate 53 , a liquid crystal layer 54 , a third circuit board 64 , a display chip 72 and an upper substrate 55 . The lower substrate 53 is located on the lower polarizing film 52 , the liquid crystal layer 54 is located on the lower substrate 53 , and the third circuit board 64 is located on the surface of the lower substrate 53 . The display chip 72 is located on the surface of the lower substrate 53 , between the third circuit board 64 and the liquid crystal layer 54 , and is electrically connected to the third circuit board 64 . The upper substrate 55 is located on the liquid crystal layer 54, and the upper substrate 55 may be a color filter substrate. Moreover, the first circuit board 60 and the second circuit board 62 are located on the surface of the upper substrate 55 .

As shown in Figure 1, the present invention further comprises at least one user interface graphic 40 or 42, the user interface graphic 40, 42 is arranged on the surface of the protective layer 20, and the light source required by the user interface graphic 40, 42 can be provided by a diode light source 510 . Moreover, the second circuit board 62 can be made of the above-mentioned translucent material, and the second circuit board 62 can also be designed with openings so that the light source can penetrate the second circuit board 62 to reach the user interface graphics 40 , 42 . Moreover, the diode light source 510 is designed in the backlight module 51 corresponding to the installation positions of the user interface graphics 40 and 42 (as shown in FIG. 2 ). In addition, the setting positions of the user interface graphics 40, 42 correspond to the setting positions of the second circuit board 62, so when the second circuit board 62 is set on the second side 82 of the liquid crystal panel 50 (as shown in FIG. 2 ), the user interface Graphics 40, 42 are located on the upper side of the touch area 30 (as shown in FIG. 1 ) corresponding to the installation position of the second circuit board 62, and the user interface graphics 40, 42 are located outside the touch area 30 and the display area 32. (As shown in Figure 1). Furthermore, the embodiment of FIG. 2 does not need to set the diode light source 510. Please refer to FIG. 3 for its embodiment. FIG. 3 is a second cross-sectional view along line Z-Z' of FIG. 1 . As shown in the figure, the light source required by the user interface element 90 and the user interface graphics 40 , 42 is instead provided by the backlight module 51 .

However, the module structure of the touch display panel 10 of the present invention does not require the user interface element 90 to be disposed on the second circuit board 62. Please refer to FIG. 4 for an embodiment thereof. FIG. Sectional view. As shown in the figure, the difference between FIG. 4 and FIG. 2 is that the second circuit board 62 is not provided in FIG. It may not overlap with the liquid crystal layer 54 (as shown in FIG. 4 ) in the display area 32 (as shown in FIG. 1 ). In addition, since the locations of the user interface graphics 40 and 42 correspond to the location of the user interface element 90 , it can be seen from FIG. 1 that the location of the user interface element 90 is still outside the touch area 30 and the display area 32 . Wherein, the range of the display area 32 is smaller than the range of the touch area 30 .

Following the above, when the user interface element 90 is designed inside the touch layer 56 (as shown in FIG. 4 ) and outside the display area 32 (as shown in FIG. 1 ), the required light source can also be provided by the diode light source 510 . Furthermore, in FIG. 4 , a supporting member 59 is added between the backlight module 51 and the liquid crystal panel 50 to support the liquid crystal panel 50 . In addition, the embodiment of FIG. 4 can also be changed in design. Please refer to FIG. 5 for the change, which is the fourth cross-sectional view of line Z-Z' in FIG. 1 . As shown, the difference between FIG. 5 and FIG. 3 is that there is no diode light source 510 in FIG. 5 , so the light source required by the user interface graphics 40 and 42 of the present invention can be provided by the backlight module 51 instead. In this way, the design of FIG. 4 can reduce the configuration and cost of the second circuit board 62 , while the design of FIG. 5 can reduce the configuration and cost of the second circuit board 62 and the diode light source 510 . However, the user interface element 90 of the touch display panel 10 of the present invention is not limited to the first inner side 84 designed on the edge of the touch layer 56 (as shown in FIGS. 4 and 5 ), and the second circuit board 62 is not limited. It is designed on the second side 82 of the liquid crystal panel 50 (as shown in FIG. 2 and FIG. 3 ), and it may have other design methods, and please refer to the following description for different design methods.

Please refer to FIG. 6, which is a top view of the second embodiment of the touch display panel 10 of the present invention. As shown in the figure, the user interface graphics 40, 42 of the present invention can be designed on the lower side of the touch area 30, but However, the user interface graphics 40 and 42 of the present invention are still designed outside the touch area 30 and the display area 32 . Please refer to FIG. 7 for structural changes in this design, which is the first cross-sectional view of line A-A' in FIG. 6 . As shown, the difference between FIG. 7 and FIG. 2 is that the first circuit board 60 is exchanged on the second side 82 , and the second circuit board 62 is exchanged on the first side 80 . In this way, the positions of the user interface graphics 40 and 42 correspond to the second circuit board 62 disposed on the first side 80 of the liquid crystal panel 50 . Similarly, the structure in FIG. 7 can also be without a diode light source 510. Please refer to FIG. 8 for the change. FIG. 8 is a second cross-sectional view of line A-A' in FIG. 6 . As shown in the figure, the difference between FIG. 8 and FIG. 7 is that the diode light source 510 is not provided in FIG. 8 , but the backlight module 51 provides the light source required by the user interface graphics 40 , 42 . Similarly, the structures shown in FIG. 7 and FIG. 8 do not need to be provided with the second circuit board 62 . Please refer to FIG. 9 for an embodiment thereof.

Following the above, Fig. 9 is a third cross-sectional view along line A-A' of Fig. 6 . As shown in the figure, the difference between FIG. 9 and FIG. 7 is that the user interface element 90 is redesigned on a second inner side 86 of the edge of the touch layer 56, and the first circuit board 60 is redesigned on the second side 82 of the liquid crystal panel 50. , therefore, the embodiment of FIG. 9 can still provide the light source required by the user interface graphics 40 and 42 by the diode light source 510 . Similarly, it can be seen from FIG. 5 that the user interface element 90 is still located outside the touch area 30 and the display area 32, that is, the user interface element 90 may not overlap with the liquid crystal layer 54 of the display area 32 (as shown in FIG. 6 ). (as shown in Figure 9). Moreover, the embodiment of FIG. 9 can also eliminate the setting and cost of the second circuit board 62, and the user interface graphics 40, 42 are arranged outside the touch area 30 and the display area 32 (as shown in FIG. 6 ) and the The user interface element 90 is disposed on the second inner side 86 of the touch layer 56 (as shown in FIG. 9 ). In addition, please refer to FIG. 10 , which is a fourth sectional view of line A-A' in FIG. 6 . As shown in the figure, the difference between FIG. 10 and FIG. 9 is that the diode light source 510 is not provided in FIG.

Therefore, the user interface graphics 40, 42 of the present invention can be designed on the upper side (as shown in FIG. 1 ) and the lower side (as shown in FIG. 6 ) of the touch area 30, and the second circuit board 62 can be designed on the side of the liquid crystal panel 50. First side 80 (as shown in Fig. 7, Fig. 8) or second side 82 (as shown in Fig. 2, Fig. 3), and user interface element 90 can be designed on the second circuit board 62 (as shown in Fig. 2, Fig. 3. As shown in FIG. 7 and FIG. 8 ) or designed on the first inner side 84 (as shown in FIG. 4 and FIG. 5 ) or the second inner side 86 (as shown in FIG. 9 and FIG. 10 ) of the touch layer 56 . However, in addition to designing the user interface element 90 in the display area 32 of the touch display panel 10 of the present invention, the user interface element 90 can also be designed in the display area 32 , which is described as follows.

Please refer to FIG. 11 , which is a top view of a third embodiment of the touch display panel 10 of the present invention. As shown in the figure, the difference between FIG. 11 and FIG. 1 is that the user interface graphics 40, 42 of the present invention are designed inside the touch area 30 and the display area 32, and, because the user interface graphics 40, 42 of this embodiment are redesigned In the display area 32, therefore, the user interface graphics 40, 42 are displayed by the liquid crystal panel 50 instead of the above-mentioned design on the surface of the protective layer 20. Please refer to FIG. 12 for structural changes in its design. FIG. A section of line BB'. As shown in the figure, the difference between FIG. 12 and FIG. 4 and FIG. 5 is that the embodiment of FIG. 12 designs the user interface element 90 on the first inner side 84 of the touch layer 56, and the user interface element 90 is located on the first side of the present invention. The polarizing film 57 and the lower polarizing film 52 may overlap with the display area 32 of the liquid crystal layer 54 . In other words, the touch display panel 10 of this embodiment does not need the diode light source 510 to provide the light source required by the user interface graphics 40 , 42 , but the backlight module 51 provides the required light source for the user interface graphics 40 , 42 . In this way, the light emitted by the backlight module 51 passes through the liquid crystal panel 50 to the user interface graphics 40 , 42 , and serves as the light source required by the user interface graphics 40 , 42 . Therefore, this design method can reduce the cost of setting another light source. However, the embodiment shown in FIG. 12 can be changed, and please refer to the following description for the changes.

Please refer to FIG. 13 , which is a top view of a fourth embodiment of the touch display panel 10 of the present invention. As shown, the difference between FIG. 13 and FIG. 11 is that the user interface graphics 40 and 42 in FIG. 13 are designed inside and below the touch area 30 and the display area 32 . Similarly, since the user interface graphics 40, 42 of this embodiment are displayed by the liquid crystal panel 50, and the light source required for the user interface graphics 40, 42 is provided by the backlight module 51, so this embodiment does not need the diode light source 510 settings to achieve cost reduction. Please refer to FIG. 14 for structural changes in this design, which is a cross-sectional view of line C-C' in FIG. 13 . As shown in the figure, the difference between FIG. 14 and FIG. 12 is that the installation positions of the first circuit board 60 and the user interface element 90 are different, that is, the first circuit board 60 is exchanged and arranged on the second side 82 of the liquid crystal panel 50, and the user interface element 90 The second inner side 86 of the edge of the touch layer 56 is exchanged, and the user interface element 90 is still located between the upper polarizing film 57 and the lower polarizing film 52 and can overlap with the display area 32 of the liquid crystal layer 54 . Therefore, the touch display panel 10 of the present invention can further design the user interface element 90 in the display area 32 and be located on the first inner side 84 (as shown in FIG. 12 ) or the second inner side 86 (as shown in FIG. 14 ) of the touch layer 56 . As shown), the second circuit board 62 and the setting of the additional light source are not required, and the cost is reduced.

In summary, the touch display panel of the present invention includes a backlight module, a liquid crystal panel, a touch layer, a first circuit board, a second circuit board, and a protective layer. The liquid crystal panel is located on the backlight module, the touch layer is located on the liquid crystal panel, the first circuit board is located on the liquid crystal panel, and is located on a first side of the liquid crystal panel and a first side of the touch layer. The second circuit board is located on the liquid crystal panel, and is located on a second side of the liquid crystal panel and a second side of the touch layer, and the protection layer is located on the touch layer, the first circuit board and the second circuit board. Furthermore, in the touch display panel of the present invention, a user interface component can be arranged in the touch layer without a second circuit board, or a user interface component can be arranged in the display area without a second circuit board and an additional circuit board. Light source settings. In this way, the technology mentioned in the embodiment of the present invention can achieve the effect of integrating the touch functions of the embedded touch panel and the physical buttons, and reducing the cost.

Claims (6)

1. A module structure of a touch display panel, characterized in that it comprises: a backlight module; a liquid crystal panel located on the backlight module; a touch layer located on the upper substrate of the liquid crystal panel; A first circuit board is located on the upper substrate of the liquid crystal panel, and is located on a first side of the liquid crystal panel and a first side of the touch layer; A second circuit board, located on the upper substrate of the liquid crystal panel, and located on a second side of the liquid crystal panel and a second side of the touch layer, the second circuit board is a user interface circuit board, and has user interface elements; and a protective layer located on the touch layer, the first circuit board and the second circuit board; Wherein, the touch operation of the touch display panel is designed on the touch layer, and the touch operation of the physical keys is designed on the second circuit board. 2 . The module structure of the touch display panel according to claim 1 , wherein the first circuit board is exchanged on the second side, and the second circuit board is exchanged on the first side. 3 . 3. The module structure of the touch display panel according to claim 1, characterized in that: it further comprises: a polarizing film located between the backlight module and the liquid crystal panel; a touch chip located on the surface of the first circuit board; an upper polarizing film located between the protective layer and the liquid crystal panel; and An adhesive layer is located between the upper polarizing film and the protection layer. 4. The module structure of the touch display panel according to claim 3, wherein the liquid crystal panel comprises: The lower substrate is located on the lower polarizing film; a liquid crystal layer located on the lower substrate; a third circuit board located on the surface of the lower substrate; a display chip, located on the surface of the lower substrate, between the third circuit board and the liquid crystal layer, and electrically connected to the third circuit board; and The upper substrate is located on the liquid crystal layer; Wherein, the first circuit board and the second circuit board are located on the surface of the upper substrate. 5. The module structure of a touch display panel according to claim 1, wherein the protective layer is made of glass, plastic or decorative film, and the thickness of the protective layer of glass and plastic is 0.5-5. 0.7mm, and the thickness of the protective layer of the decorative film is 0.2mm. 6 . The module structure of the touch display panel according to claim 1 , wherein at least one user interface pattern is arranged on the surface of the protective layer corresponding to the installation position of the second circuit board.