TWI830585B - Backlight panel with touch module - Google Patents

Abstract

A backlight panel with touch module, which is disposed on the bottom layer of a display and stacked with a liquid crystal panel and a glass cover, includes a circuit carrier board, a plurality of light-emitting members, a light-transmission glass substrate, a touch module, and a diffusion ink layer. The light-emitting members are disposed on the circuit carrier board to provide a backlight for the display. The light-transmission glass substrate is arranged on one side of the circuit carrier board having the light-emitting members. The touch module is arranged on the surface of one side of the light-transmission glass substrate. The diffusion ink layer is formed on the side of light-transmission glass which is the same or different from the side of the touch module. The present application effectively reduces the complexity of the circuit arrangement the manufacturing cost of the circuit.

Description

Backlight panel with touch module

This application relates to a backlight panel, particularly a backlight panel with a touch module.

With the development of electronic technology, display panel technology with touch functions has become quite mature, and both touch sensitivity and response speed have been greatly improved. Currently known touch display panels include a transparent glass plate, a liquid crystal display structure and a backlight source structure, and the above structures are stacked and used as a touch display screen. Among them, the backlight source structure can use direct-type or side-type light source modules to provide the light source required for screen display; the liquid crystal display structure is mainly used to display images and control the light source by changing the deflection angle of the liquid crystal molecules through electric field control. Passage and blocking, and the use of color filters to achieve the function of color display. Among them, the touch module that senses the user's touch position will be placed in the liquid crystal display structure. When the user's finger touches the display panel, the touch module will read the row and column positions touched by the finger. In this way, the signal of the finger position is transmitted, so that the display panel has both display and touch functions.

As mentioned above, due to the current manufacturing method of touch display panels, the touch module is installed in the liquid crystal display structure. However, due to the relationship between the manufacturing process and the photomask, this method will increase the complexity of the circuit configuration, and Increases the setup cost of the circuit. Furthermore, the LCD structure will also have yield issues. If the LCD structure is detected to be damaged and cannot be used, the touch module located in the LCD structure will inevitably be eliminated even if it is still a good product. discarded, thereby adding additional cost burden.

The main purpose of this application is to improve the problems of complex circuits and high cost of touch display panels.

The aforementioned purposes do not prevent the existence of other purposes. If a person with ordinary knowledge in the relevant technical field can derive the purpose from the description, patent scope, drawings, etc., it is also included in the purpose of this application. Therefore, the purpose of this application is not limited to the foregoing enumerated purposes.

In order to achieve the above object, the present application provides a backlight panel with a touch module, which is arranged on the bottom layer of a display and is stacked with a liquid crystal panel and a glass cover. The backlight panel includes: a circuit carrier board, A plurality of light-emitting elements, a glass transparent substrate, a touch module and a diffusion ink layer. The circuit carrier board adopts the technology of printed circuit substrate, and a plurality of light-emitting elements are arranged on it to provide a backlight source for the display; the glass transparent substrate is placed on the side of the circuit carrier board with the light-emitting elements; the touch module is placed on One side surface of the glass light-transmitting substrate. In addition, a diffusion ink layer is formed on the same side of the glass light-transmitting substrate as the touch module or on the other side different from the touch module, so that the light emitted by the light-emitting elements more even.

Thus, this application has the following characteristics:

1. The touch module is installed in the backlight panel. Compared with the complex circuit structure of the liquid crystal panel, the circuit structure of the backlight panel is relatively simple, so it can effectively reduce the complexity of the touch module circuit setup, thereby reducing the overall cost. Manufacturing costs.

2. The structure of the backlight panel is simple. Generally speaking, the process yield is higher than that of the LCD panel. Therefore, the touch module of the present application is installed in the backlight panel, which can effectively avoid the conventional technology of setting the touch module. In LCD panels, touch modules must also be eliminated due to yield issues in LCD panels, thus achieving the effect of reducing overall costs.

In order to facilitate the explanation of the central idea of the present application expressed in the above column of the summary of the invention, specific embodiments are hereby expressed. Various objects in the embodiments are drawn according to proportions, sizes, deformations or displacements suitable for illustration, rather than according to the proportions of actual components, and are explained first.

Exemplary embodiments of the present application are described in detail below with reference to the accompanying drawings. It is not intended to limit the technical principles of the present application to the specific disclosed embodiments, but the scope of the present application is limited only by the patent scope of the application, covering substitutions, modifications and equivalent.

Referring to Figures 1 to 6, the present application provides a backlight panel 100 with a touch module 40, which is disposed on the bottom layer of a display 1 and is stacked with a liquid crystal panel 1a and a glass cover 1b. The backlight The panel 100 includes: a circuit carrier 10 , a plurality of light-emitting elements 20 , a glass transparent substrate 30 , a touch module 40 and a diffusion ink layer 50 .

Please refer to FIG. 1 . In this embodiment, the circuit carrier board 10 is a printed circuit board, but it can also be other forms of circuit boards, flexible boards or composite carrier boards. A plurality of light-emitting elements 20 are disposed on the circuit carrier board 10 , it is a direct backlight structure and provides a backlight source for the display 1. In a preferred embodiment of the present application, the plurality of light-emitting elements 20 are LEDs. The present application can select the backlight component that the display 1 wants to use according to the actual situation. The glass light-transmitting substrate 30 is disposed on the side of the circuit carrier 10 with the light-emitting elements 20 , wherein the light-emitting elements 20 must be spaced apart from the glass light-transmitting substrate 30 , or completely adhered to each other without gaps, thereby achieving light Structural setting with optical distance of 0. The touch module 40 is disposed on one side surface of the glass transparent substrate 30 to sense the user's touch position. The touch module 40 can use a transparent conductive material (Transparent Conducting Oxide, TCO) such as indium oxide. Tin (Indium Tin Oxide, ITO), conductive polymers, carbon nanotubes, graphene or metal nanowires, etc. The structure of transparent conductive materials as touch position sensing is not the focus of this case, so it will not be discussed in detail here. The diffusion ink layer 50 is formed on the same side of the glass light-transmitting substrate 30 as the touch module 40 or on the other side different from the touch module 40, so that the light from the light-emitting elements 20 can pass through the diffusion ink. After the layer 50 is formed, the light emitted by the light-emitting elements 20 is uniformized to achieve the purpose of providing a uniform surface light source.

Furthermore, in this embodiment, the touch module 40 is disposed on a side surface of the glass translucent substrate 30 away from the circuit carrier board 10 , and the diffusion ink layer 50 is disposed on the touch module 40 away from the glass translucent substrate 30 That is, the touch module 40 and the diffusion ink layer 50 are disposed on the same side of the glass transparent substrate 30 . In other words, according to the above-mentioned stacked structure relationship, the light sources of the light-emitting elements 20 pass through in sequence. Glass transparent substrate 30 , touch module 40 and diffusion ink layer 50 . It should be noted that in this embodiment, since the diffusion ink layer 50 is made of insulating material, it can be used as an insulating distance between the touch module 40 and the liquid crystal panel 1a stacked thereon, thereby preventing the touch module 40 from being connected to the liquid crystal panel 1a. The liquid crystal panel 1a has electrical coupling or short circuit problems, which affects the normal operation of subsequent touch or display functions.

Please refer to FIG. 2 . In the second embodiment of the present application, the touch module 40 is disposed on a side surface of the transparent glass substrate 30 away from the circuit carrier board 10 , and the diffusion ink layer 50 is disposed on the transparent glass substrate 30 . The side of the optical substrate 30 away from the touch module 40 , that is, the touch module 40 and the diffusion ink layer 50 are disposed on different sides of the glass light-transmitting substrate 30 .

Please also refer to FIG. 3 . In the third embodiment of the present application, the side of the circuit carrier board 10 having the light-emitting elements 20 is filled with an optical glue 21 . In this embodiment, the material is acrylic. After the optical glue 21 is irradiated by an ultraviolet light source, it solidifies and covers the light-emitting elements 20. Due to the material characteristics of the optical glue 21, the light utilization rate of the light-emitting elements 20 can be increased. In addition, the optical glue 21 is also used to firmly connect the glass light-transmitting substrate 30 to the circuit carrier board 10, whereby the light-emitting elements 20 can be firmly connected to the circuit carrier board 10, ensuring that the light-emitting elements 20 correspond to the glass transparent substrate 30. The distance and relative position relationship between the optical substrate 30.

In addition, please refer to FIG. 4 , which is a fourth embodiment of the present application. Compared with the first embodiment, the difference is that the touch module 40 is disposed on a circuit board adjacent to the glass transparent substrate 30 . One side surface of the board 10 , and the diffusion ink layer 50 is disposed on the side of the glass translucent substrate 30 away from the touch module 40 , that is, the touch module 40 and the diffusion ink layer 50 are disposed on the glass translucent substrate 30 of different sides. Please refer to FIG. 5 again, which is the fifth embodiment of the present application. The touch module 40 is disposed on one side surface of the glass transparent substrate 30 adjacent to the circuit carrier board 10, and the diffusion ink layer 50 is disposed on the touch panel. The control module 40 is away from the side of the glass translucent substrate 30 , that is, the touch module 40 and the diffusion ink layer 50 are disposed on the same side of the glass translucent substrate 30 and adjacent to the circuit carrier board 10 .

In a preferred embodiment of the present application, the diffusion ink layer 50 may further include a transparent resin and a light diffusion resin. The aforementioned light diffusion resin may be polymethyl methacrylate and silicon or a combination thereof. The diffusion ink layer 50 is used to The light rays of the light-emitting elements 20 are dispersed to achieve the purpose of providing a uniform surface light source. As shown in FIGS. 3 and 6 , a black covering area 51 can be formed at the periphery of the diffusion ink layer 50 . The black covering area 51 is made of a resin material to block the light emitted by the light-emitting elements 20 at the edge of the display 1 . , and hide the wires at the end of the touch module 40, making the display 1 more beautiful as a whole.

Based on the above, this application can achieve the following effects:

1. By disposing the touch module 40 in the backlight module of the display 1 of the present application, it can not only simplify the complexity of the circuit configuration, but also achieve the effect of reducing the circuit manufacturing cost.

2. The diffusion ink layer 50 can also be used as an insulating layer, blocking the liquid crystal panel 1a and the touch module 40, preventing mutual interference between circuits, thereby reducing the complexity of circuit settings, and also reducing circuit manufacturing costs and reducing additional costs. An insulation layer is provided to reduce the overall thickness.

3. This application can effectively avoid the conventional technology of arranging the touch module 40 in the liquid crystal panel 1a, and the liquid crystal panel 1a also needs to eliminate the touch module 40 due to yield issues, thereby reducing the overall cost. The effect.

4. Since the material of the optical glue 21 is acrylic, it can help the light-emitting elements 20 to gather light, thereby increasing the light utilization rate.

The aforementioned effects do not prevent the existence of other effects. If a person with ordinary knowledge in the technical field can deduce the effect from the description, patent scope or drawings, etc., it is also included in the effect of this application. Therefore, the effects of this application are not limited to the effects listed above.

The above embodiments are only used to illustrate the present application and are not intended to limit the scope of the present application. All modifications or changes that do not violate the spirit of this application fall within the scope of this application.

100:Backlight panel 1: Monitor 1a:LCD panel 1b:Glass cover 10:Circuit carrier board 20:Light-emitting components 21: Optical glue 30: Glass transparent substrate 40:Touch module 50: Diffusion ink layer 51: black covered area

Figure 1 is a schematic cross-sectional view of the structure of the first embodiment of the present application. Figure 2 is a schematic cross-sectional view of the structure of the second embodiment of the present application. Figure 3 is a schematic cross-sectional view of the structure of the third embodiment of the present application. Figure 4 is a schematic structural cross-sectional view of the fourth embodiment of the present application. Figure 5 is a schematic cross-sectional view of the structure of the fifth embodiment of the present application. Figure 6 is a schematic structural cross-sectional view of the sixth embodiment of the present application.

100:Backlight panel

1: Monitor

1a:LCD panel

1b:Glass cover

10:Circuit carrier board

20:Light-emitting components

30: Glass transparent substrate

40:Touch module

50: Diffusion ink layer

Claims (10)

A backlight panel with a touch module is provided on the bottom layer of a display and is stacked with a liquid crystal panel and a glass cover. The backlight panel includes: a circuit carrier board; A plurality of light-emitting elements arranged on the circuit carrier board to provide a backlight source for the display; A glass light-transmitting substrate, which is arranged on the side of the circuit carrier board with the light-emitting elements; a touch module, which is disposed on one side surface of the glass light-transmitting substrate; and A diffusion ink layer is formed on the same side of the glass transparent substrate as the touch module or on the other side different from the touch module. The backlight panel with a touch module as claimed in claim 1, wherein the side of the circuit carrier with the light-emitting elements is filled with an optical glue and covers the light-emitting elements, and the glass light-transmitting substrate uses the optical Glue is fixedly connected to the circuit carrier board. The backlight panel with a touch module as described in claim 2, wherein the optical glue is made of acrylic. The backlight panel with a touch module as claimed in claim 1, wherein the touch module is disposed on a side surface of the glass transparent substrate away from the circuit carrier board, and the diffusion ink layer is disposed on the touch The module is away from the side of the glass transparent substrate. The backlight panel with a touch module as claimed in claim 1, wherein the touch module is disposed on a side surface of the glass light-transmissive substrate away from the circuit carrier board, and the diffusion ink layer is disposed on the glass The light-transmitting substrate is away from the side of the touch module. The backlight panel with a touch module as claimed in claim 1, wherein the touch module is disposed on a side surface of the glass light-transmissive substrate adjacent to the circuit carrier board, and the diffusion ink layer is disposed on the glass The light-transmitting substrate is away from the side of the touch module. The backlight panel with a touch module as claimed in claim 1, wherein the touch module is disposed on a side surface of the glass transparent substrate adjacent to the circuit carrier board, and the diffusion ink layer is disposed on the touch Control the module away from the side of the glass transparent substrate. The backlight panel with a touch module as claimed in claim 1, wherein the diffusion ink layer includes a transparent resin and a light diffusion resin, and the light diffusion resin is selected from the group consisting of polymethyl methacrylate and silicon. More than one type in the group. The backlight panel with a touch module as claimed in claim 1, wherein a black covering area is formed on the periphery of the diffusion ink layer. The backlight panel with a touch module as claimed in claim 9, wherein the black covering area is made of a resin material.

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