JP6244898B2 - Touch-type information input image display device and information device - Google Patents

Description

  The present invention relates to a touch-type information input image display device and an information device having a capacitive touch panel provided with a cover glass on the uppermost input surface.

  2. Description of the Related Art In recent years, touch-type information input image display devices (hereinafter referred to as input devices) have been adopted in operation units of various electronic devices such as smartphones, portable information terminals such as tablets, and car navigation systems. The input device is used as an input device for detecting a contact position of a fingertip or a pen tip on a display surface of a display panel such as a liquid crystal display device or an organic EL device. The input method is roughly classified into a resistance film type, a capacitance type, an optical type, and an ultrasonic type.

  Among them, the capacitance type input device has a matrix-like translucent conductive film formed on a single transparent substrate, and changes in capacitance induced by the contact of a finger or the like between the electrodes. Is detected as a weak current change to identify the contacted position on the touch panel. The electrostatic capacitance type further includes a surface type and a projection type. The projected capacitive input device includes a plurality of electrodes arranged on a grid in the X direction and the Y direction, is capable of multi-touch, and is currently spreading rapidly.

  There are a glass type and a film type in the projected capacitive touch panel sensor. In the former, since the transmittance is higher than that of the film and the positional accuracy of the wiring pattern formed on the glass is superior to that of the film, the frame portion covering the wiring can be made small. Furthermore, since the surface smoothness is excellent, there is an advantage that it looks better than the film type. In general, a glass type is employed in small products such as a mobile terminal such as a smartphone that requires high definition and low power consumption.

  The latter is advantageous in that it is easy to remove bubbles when it is bonded to another display device or a cover glass because it is lightweight, hard to break, low in manufacturing cost, and flexible. In general, many film types are used for medium-sized and large-sized products such as tablet computers and televisions that require low cost and easy productivity.

  The uppermost surface of the input device, that is, the input unit is covered with a cover to protect the touch panel sensor as described above. Generally, a glass substrate or a resin substrate is known, and a glass substrate is used as the cover glass 1 in many cases with a structure as shown in FIG. 3A (Patent Document 1).

However, due to the thickness and weight of the glass base material, there are restrictions on the design and manufacturing process of the input device, and the touch panel undergoes bending as shown in FIG.
Since the clearance between the touch panel and the liquid crystal panel 10 becomes small and is easily affected by noise of the liquid crystal panel, there is a problem that malfunction is likely to occur.

  To solve the above problem, for example, as shown in FIG. 3C, a clearance between the touch panel and the liquid crystal panel 10 is preliminarily widened to prevent malfunction due to the influence of liquid crystal noise, or simply a glass substrate. A method of preventing the bending due to the pressing pressure by increasing the thickness of the material can be considered. However, both of these methods have a problem that the product thickness increases and the parallax between the touched portion and the display portion increases.

JP 2012-226688 A

  The present invention has been made in view of the above problems, and can provide a touch-type information input image display device that can maintain a constant clearance between the touch panel and the liquid crystal panel even when the touch panel is operated and that does not malfunction due to the influence of the liquid crystal layer. Objective.

In the invention according to claim 1 for achieving the above object , a touch panel in which a touch panel sensor and a cover glass of a size covering the touch panel sensor are integrated is arranged on the upper surface of the liquid crystal panel, and these are touch panels on the upper surface. The touch-type information input image display device is covered with a casing having a window frame that exposes the touch panel, and the touch panel sensor side of the touch panel is fixed to the upper part of the casing for the liquid crystal panel via the first support body. The touch panel cover glass is fixed to the casing through a second support on the outer peripheral side of the portion fixed to the upper part of the casing for the liquid crystal panel.

  The invention according to claim 2 is that the fixing of the cover glass of the touch panel and the housing on the outer peripheral side of the fixing portion is performed via the second support body, and the upper surface of the cover glass and the inner surface portion of the window frame. The touch-type information input image display device according to claim 1, wherein the touch-type information input image display device is fixed horizontally.

  In the invention according to claim 3, the cover glass of the touch panel and the casing are fixed, and the peripheral edge of the cover glass and the peripheral edge of the window frame are diagonally overlapped via the second support. The touch-type information input image display device according to claim 1, wherein the touch-type information input image display device is fixed in shape.

The invention according to claim 4, wherein the second support, wherein disposed on the lower side of the margin area of the cover glass covering the touch panel, is fixed to the housing in a state where the tensioned in the lower The touch-type information input image display device according to claim 1, wherein:

  The invention according to claim 5 is an information device including the touch-type information input image display device according to any one of claims 1 to 4.

  According to the first aspect of the present invention, a touch panel in which a touch panel sensor and a cover glass of a size covering the touch panel sensor are integrated on the upper surface of the liquid crystal panel, the touch panel sensor side covers the upper part of the liquid crystal panel casing. Glass is fixed on the front and back of the touch panel to the case of the touch-type information input image display device via the first support and the second support, respectively, so that the lever principle works and operates during touch panel operation. Can absorb pressure. As a result, since bending can be suppressed, the thickness of the cover glass can be reduced and the weight of the touch panel can be reduced. In addition, since the clearance between the touch panel and the liquid crystal panel can be narrowed, a highly sensitive sensor function can be obtained.

According to claim 2, the contact area with the support can be increased by fixing the upper surface of the cover glass and the inner surface of the window frame of the housing via the second support. It is possible to use the lever principle more effectively and stably.

  According to claim 3, the window frame and the glass cover are fixed through a second support body in such a manner that the peripheral end portion of the cover glass and the peripheral end portion of the window frame are diagonally overlapped. And the same surface (flat), the touch panel operation area is easy to make, and the product thickness can be reduced.

  According to claim 4, the second support 2 is disposed below the blank area of the cover glass (an area remaining after covering the touch panel sensor), and tension is applied obliquely to the lower side. By fixing to the housing in the state, it is possible to absorb and reduce the pressing force applied when operating the touch panel. Further, the window frame and the glass cover are flush with each other (flat), the touch panel can be easily operated, and further, damage due to dust that easily accumulates in a conventional stepped portion can be prevented.

  As described above, according to the present invention, it is possible to provide a touch-type information input image display device that can prevent an influence on the liquid crystal layer due to pressing of the touch panel and an information device including the touch-type information input image display device.

The cross-sectional schematic which shows joining with the touchscreen and liquid crystal panel housing | casing which concern on this invention. FIG. 2 is a schematic cross-sectional view showing the direction of stress acting during operation in FIG. 1. The cross-sectional schematic of the conventional glass cover type input device.

  Hereinafter, the present invention will be specifically described with reference to the drawings.

  As shown in FIG. 1A, a touch-type information input image display device (hereinafter referred to as an input device) of the present invention has a touch panel sensor on the upper surface of a liquid crystal panel casing 20 that covers the outer periphery of the liquid crystal panel 10. 2 and a cover glass 1 of a size covering the same are arranged, and the touch panel sensor of the touch panel is covered with a housing 30 having a window frame for exposing the touch panel at the top. The second side is fixed to the liquid crystal panel casing 20 via the first support 3a, and the cover glass 1 of the touch panel is fixed to the casing 30 via the second support 3b. It is the input device characterized by being.

  The present invention fixes one side of the touch panel to the liquid crystal panel casing 20 via the first support 3a and the other side to the casing 30 of the input device via the second support 3b. It is characterized by relieving the pressing pressure 40 applied when operating the touch panel by the principle of leverage.

  For example, in the case of the input device shown in FIG. 1A as an embodiment, the pressing force 40 applied when operating the touch panel is stressed in the direction shown by the arrow as shown in FIG. And the occurrence of bending of the touch panel can be prevented. Since such an effect is obtained, the clearance between the touch panel and the liquid crystal panel 10 can be narrowed, and a highly sensitive sensor function can be obtained.

  Further, for example, a structure as shown in FIG. That is, the window frame and the cover glass 1 are flush with each other by fixing the cover glass peripheral end portion 4 and the peripheral end portion of the window frame in an overlapping manner via the second support 3b. (Flat).

By taking such a form, as shown in FIG. 2 (b), the absorption of the pressing force 40 can be reduced by the principle of leverage, and the window frame and the cover glass 1 are flush with each other (flat). This makes it easier to operate the touch panel.

  Further, for example, a structure as shown in FIG. That is, the second support 2 is disposed below the blank area of the cover glass 1 (an area remaining after the touch panel sensor 2 is covered), and the tension of the lower side is applied to the input device. It can be fixed to the housing 30.

  As shown in FIG. 2C, the pressing force 40 applied when operating the touch panel in this case is fixed to the liquid crystal panel casing 20 via the first support 3a. While the force of pushing up from the side works, the force acts downward along the direction of the support 5 via the second support 5 arranged in the blank area of the color glass 1, and the principle of leverage Thus, the pressure 40 can be absorbed and relaxed to prevent the touch panel from being bent. Moreover, it can be made into the same surface as the window frame of the housing | casing 30 of the said input device, and the operativity of a touchscreen can be improved.

  As the cover glass 1 according to the present invention, glass having a good transparency equivalent to glass for a substrate of a flat display device such as a general float glass or a liquid crystal panel can be used. Therefore, it is desirable to use a tempered glass having a high surface compressive stress.

  Moreover, as the support body 5 as shown in FIG.2 (c), it can fix with an upper-lower-end part, and is not a thing to specifically limit. In this case, an adhesive can be used as a method of fixing the cover glass and the joint. On the other hand, as a method for fixing the input device to the housing 30, an adhesive may be used similarly, or a method such as screwing may be used.

  As described above, according to the present invention, one of the touch panels is fixed to the liquid crystal panel casing 20 and the other is fixed to the casing of the input device. The pressure 40 can be absorbed and relaxed. As a result, it is possible to provide a touch-type information input image display device and an information device that can suppress bending of the touch panel, can maintain a constant clearance between the touch panel and the liquid crystal panel 10, are not affected by the liquid crystal layer, and do not malfunction. be able to.

  The input device according to the present invention can be used as various types of input devices such as smartphones, portable information terminals such as tablets, and car navigation systems.

DESCRIPTION OF SYMBOLS 1 ... Cover glass 2 ... Touch panel sensor 3a ... First support 3b ... Second support 4 ... Cover glass short side 5 ... Second support (downward tension Support)
10. Liquid crystal panel 20. Liquid crystal panel housing 30. Touch information input image display device housing 40. Pressure direction during touch panel operation.

Claims (5)

The upper surface of the liquid crystal panel, and a cover glass sized to cover the touch panel sensor and it is arranged integrated touch panel, and these are, touch coated with housing having a window frame to expose the touch panel on the top surface An information input image display device,
The touch panel sensor side of the touch panel is fixed to the upper part of the liquid crystal panel casing through a first support,
In the outer peripheral side than the portion where the touch panel is fixed to the housing upper part for the liquid crystal panel, touch the cover glass of the touch panel, characterized in that it is fixed to the housing through a second support member Expression information input image display device. Wherein the cover glass of the touch panel and the housing, the touch information input image according to claim 1, characterized in that said cover glass top and an inner surface portion of the window frame is fixed so that the horizontal Display device. Wherein the cover glass of the touch panel and the housing, the peripheral edge of the cover glass peripheral edge and the window frame and is, touch according to claim 1, characterized in that it is fixed in a shape overlapping diagonally Information input image display device. Claims wherein the second support, wherein disposed on the lower side of the margin area of the cover glass covering the touch panel, characterized in that it is fixed to the housing in a state where the tensioned in the lower The touch-type information input image display device according to 1. An information apparatus comprising the touch-type information input image display device according to any one of claims 1 to 4.