JPH1063419A - Handwriting input device integrated liquid crystal unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handwriting input device integrated liquid crystal unit which is thin and inexpensive. SOLUTION: About an LCD cell and an LCD top chassis, an FPC of the LCD cell is inserted into a mounted hole of the LCD top chassis and the LCD cell is stuck with a double coated adhesive tape. A digitizer 7 is inserted into an LCD bottom chassis 6 which has ribs and locking parts, locked and integrated, an LCD back light system assembly 12 positions connectors 13 to 15 at mounted holes 16 and 17 of the chassis 6 and a mounted hole of the LCD top chassis, and the other connector is taken out through the mounted hole of the LCD top chassis. A digitizer substrate is attached to the chassis 6 by caulking. After an LCD unit is composed by overlapping the LCD top chassis, the assembly 12, the digitizer 7 and the chassis 6 and uniting them with screws, a handwriting input device integrated liquid crystal unit is formed by fixing the LCD unit to an LCD top case.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal unit integrated with a handwriting input device.

[0002]

2. Description of the Related Art It is known that a liquid crystal unit is integrated with a handwriting input device. For example, a handwriting input device such as a touch panel is replaced with a liquid crystal display device and a backlight comprising an L.
When it is arranged on the surface of the CD unit, the configuration is as shown in FIG. 41 is a top case, 42 is a handwriting input device such as a touch panel, 43 is an LCD unit, and 44 is a bottom case. When the handwriting input device is arranged on the rear surface of the LCD unit, the configuration is as shown in FIG. 41 is a top case 41, 43 is an LCD unit, 45 is a handwriting input device such as a digitizer, and 44 is a bottom case.

[0003]

However, in the case of FIG. 5, the handwriting input device 42 can be integrated with the driving substrate, but the display becomes dark due to low light transmittance. On the other hand, in the case of FIG. 6, it is necessary to attach a digitizer 45 as a handwriting input device as shown in FIG.
That is, LC between the bottom case 44 and the top case 41
It is necessary to mount a unit integrating the D unit 43 and the digitizer 45 and the digitizer driving substrate 46 via the mounting bracket 47. For this reason, the necessity of mounting hardware increases the cost of parts, hinders the reduction in thickness, and increases the number of assembly steps.

An object of the present invention is to provide a thin and inexpensive liquid crystal unit integrated with a handwriting input device which solves the above problems.

[0005]

In order to solve the above problems, the present invention provides an LCD top case, an LCD top chassis, an LCD cell, an LCD backlight system assembly, a digitizer, and an LCD bottom chassis. In the liquid crystal unit integrated with a handwriting input device which is assembled sequentially, the LCD cell and the LCD top chassis are attached by inserting an FPC of the LCD cell into a mounting hole of the LCD top chassis, and providing a double-sided tape provided on the LCD top chassis. The digitizer slides the digitizer after passing the FPC of the digitizer through the mounting hole of the LCD bottom chassis through the LCD bottom chassis provided with the insertion positioning ribs and the locking portion. And locked to the locking portion. Bed are integrated by performing the positioning by applying a digitizer to the LCD backlight system assembly having a first to third connectors,
The first connector and the second connector are positioned in the mounting hole of the LCD bottom chassis and the mounting hole of the LCD top chassis, and the third connector is inserted through the mounting hole of the LCD top chassis. The digitizer substrate is placed on the notch of the digitizer substrate on the back side of the LCD bottom chassis.
The projection provided on the CD bottom chassis is attached by caulking, and the FPC of the digitizer and the L
Connect the FPC of the CD cell to the digitizer substrate, and
Top chassis, LCD backlight system assembly, digitizer, LCD bottom chassis overlap LC
The D top chassis and the LCD bottom chassis are integrated by screwing to form an LCD unit, and then the LCD unit is mounted on an LCD top case to which a filter is attached and assembled.

[0006]

1 to 4 are explanatory views for explaining the structure and assembling steps of a liquid crystal unit according to the present invention.
FIG. 1 is an explanatory diagram showing a method of attaching the LCD cell 1 and the LCD top chassis 2. 1 is an LCD cell, 2 is L
It is a CD top chassis. Reference numeral 3 denotes a double-sided tape attached to the LCD top chassis, and the FPC 4 of the LCD cell 1
Is inserted into the mounting hole 5 of the LCD top chassis 2, and the LCD cell 1 is adhered to the double-sided tape 3 to integrate the LCD cell 1 and the LCD top chassis 2.

FIG. 2 is an explanatory diagram for explaining an assembly process of the LCD unit A.

Reference numeral 6 denotes an LCD bottom chassis, and reference numeral 7 denotes a digitizer. When the digitizer 7 is inserted into the LCD bottom chassis 6, the FPC 8 of the digitizer 7
Pass through the mounting hole 9 of the CD bottom chassis 6. Reference numeral 10 denotes an insertion positioning rib for inserting the digitizer 7 into the LCD bottom chassis 6, and the positioning is performed by applying the digitizer 7 to the rib 10. 11 is LCD
A locking portion provided integrally with the bottom chassis 6,
It is for sliding and locking the digitizer 7. Reference numeral 12 denotes an LCD backlight system assembly, which is inserted into the LCD bottom chassis 6. The LCD backlight system assembly 12 is inserted with the rough surface facing upward. 13 to 15 are connectors;
And 15 are mounting holes 16 of the LCD bottom chassis 6,
17 and mounting holes 18 and 19 of the LCD top chassis 2
Is positioned with. The connector 13 is put out through the mounting hole 20 of the LCD top chassis 2.

After the LCD top chassis 2, the LCD backlight system assembly 12, the digitizer 7, and the LCD bottom chassis 6 are stacked, the LCD top chassis 2 and the LCD bottom chassis 6 are screwed together with screws 21 to be integrated. . Further, the shield plate 22 is set to L
It is screwed to the CD top chassis 2 with screws 23. FIG. 3 is an explanatory diagram for attaching the digitizer substrate 24 to the LCD unit A assembled according to FIG. When the digitizer substrate 24 is attached to the back surface of the LCD bottom chassis 6 of the LCD unit A, four projections 26 provided on the LCD bottom chassis 6 are attached to the notch 25 of the digitizer substrate 24 by caulking.
A gasket 27 is attached to the digitizer substrate 24 so as not to cover the resist. The FPC 8 of the digitizer 7 is connected to the digitizer substrate 24, and the FPC 4 of the LCD cell 1 is also connected to the digitizer substrate 24. LC
Connector 13 of D backlight system assembly 12
Is attached to the light control board 29 through the shield plate 28.

FIG. 4 is an explanatory view showing a method of attaching the LCD unit A assembled in FIG. On the back surface of the LCD top case 30, a double-sided tape 31 is stuck. A filter 32 is attached to the double-sided tape 31. The LC assembled in Fig. 3 on top
The D unit A is placed. Attachment is made with screws 33. The dimming board 29 is screwed together with the shield plate 28 to the LCD top case 30 with screws 34. A changeover switch 35 is screwed to the LCD top case 29 with a screw 36.

As described above, the liquid crystal unit and the handwriting input device are integrated.

[0012]

As described above, according to the present invention, a handwriting input device such as a digitizer can be directly attached to an LCD unit regardless of the size of a digitizer driving board without using a mounting bracket, so that serviceability and workability can be improved. The performance is improved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a method of attaching an LCD cell 1 and an LCD top chassis 2;

FIG. 2 is an explanatory diagram illustrating an assembly process of an LCD unit A.

FIG. 3 is an explanatory view for attaching a digitizer substrate 24 to the LCD unit assembled according to FIG. 2;

FIG. 4 is an explanatory diagram showing a method of attaching the LCD unit A assembled in FIG.

FIG. 5 is an explanatory diagram of a conventional liquid crystal unit integrated with a handwriting input device.

FIG. 6 is an explanatory diagram of another conventional liquid crystal unit integrated with a handwriting input device.

FIG. 7 is an explanatory view of mounting in FIG. 6;

[Explanation of symbols]

 A LCD unit 1 LCD cell 2 LCD top chassis 3 Double-sided tape 4 FPC 5 Mounting hole 6 LCD bottom chassis 7 Digitizer 8 FPC 9 Mounting hole 10 Rib 11 Locking part 12 LCD backlight system assembly 13-15 Connector 16-20 Mounting hole DESCRIPTION OF SYMBOLS 21 Screw 22 Shield plate 23 Screw 24 Digitizer board 25 Notch 26 Projection 27 Gasket 28 Shield plate 29 Light control board 30 Top case 31 Double-sided tape 32 Filter 33 Screw 34 Screw 35 Changeover switch 36 Screw 41 Top case 42 Handwriting input device 43 LCD unit 44 Bottom case 45 Handwriting input device 46 Digitizer driving board 47 Mounting bracket

Claims (1)

[Claims] 1. A liquid crystal unit integrated with a handwriting input device, wherein an LCD top case, an LCD top chassis, an LCD cell, an LCD backlight system assembly, a digitizer, and an LCD bottom chassis are sequentially stacked and assembled. The mounting of the LCD cell and the LCD top chassis is performed by inserting the FPC of the LCD cell into a mounting hole of the LCD top chassis and attaching the LCD cell to a double-sided tape provided on the LCD top chassis, thereby integrating the digitizer. Digitizer FPC on the LCD bottom chassis provided with insertion positioning ribs and locking portions
After passing through the mounting hole of the LCD bottom chassis, the digitizer is slid to be locked to the locking portion, and the digitizer is applied to the rib to perform positioning and integration, and the first to third connectors are provided. The LCD backlight system assembly is inserted into the LCD bottom chassis, and a first connector and a second connector are positioned in a mounting hole of the LCD bottom chassis and a mounting hole of the LCD top chassis. The digitizer substrate is mounted by caulking a projection provided on the LCD bottom chassis in a cutout portion of the digitizer substrate on the back side of the LCD bottom chassis, and the digitizer FPC and the Digitizer substrate for LCD cell FPC LCD top chassis, LCD backlight system assembly, digitizer, LCD bottom chassis are overlapped, LCD top chassis and LCD bottom chassis are integrated by screwing to form an LCD unit, and the filter is attached to the LCD top case. An LCD unit integrated with a handwriting input device, wherein the LCD unit is mounted and assembled.