JP2005293074A - Pointing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pointing device with high position resolution and high productivity in which the luminance deterioration of a display is not generated. <P>SOLUTION: This pointing device for outputting the coordinate information of a specific position on a display is provided with a detecting means integrally formed with the non-light emitting part of the display. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pointing device for a display used in a computer or the like, and more particularly to a pointing device having a high position resolution.

  Conventional display pointing devices (optical touch panels) form an infrared grid on the display by forming a pair of infrared light emitting elements (LEDs) and light receiving elements (phototransistors) on an opto-matrix frame inside the bezel. (Not shown). The light emitting element and the light receiving element are formed in the frame portion of the display.

  When the display is touched with a stylus such as a finger, infrared rays are shielded, and the light receiving element outputs the shielded specific position as coordinate information.

  Another conventional pointing device (contact touch panel) forms a transparent film electrode and a transparent glass electrode on a display (not shown).

  And when it contacts with a finger or a stylus, a film electrode and a glass electrode will contact at the contact point, and the specific position of a contact point will be output as coordinate information.

  Furthermore, some conventional coordinate input systems form code symbols indicating coordinate information in the display layer (see, for example, Patent Document 1).

JP 2002-82771 A

  However, the former conventional pointing device requires a width for arranging the optical component on the frame, and there is a problem that it becomes large. In addition, there is a problem that the position resolution is poor and character input or the like cannot be performed.

  Furthermore, the latter conventional pointing device has a problem that the brightness of the display is reduced by the film electrode and the glass electrode. In addition, there is a problem that Newton rings occur when the film electrode and the glass electrode are brought into contact with each other.

  An object of the present invention is to solve the above-described problems, and to provide a pointing device that has a high position resolution and does not cause a decrease in luminance of a display. Another object of the present invention is to provide a pointing device with good productivity.

The present invention which achieves such an object is as follows.
(1) A pointing device for outputting coordinate information of a specific position on a display, comprising a detecting means formed integrally with a non-light emitting portion of the display.

(2) The pointing device according to (1), wherein the detection means is formed in a matrix between pixels of the display.

(3) The detection means includes a first conductor formed in a layer structure, a photoelectric material formed in a layer structure on the first conductor, and a second conductor formed in a layer structure on the photoelectric material. A pointing device according to (2), comprising a body.

(4) The pointing device according to any one of (2) and (3), wherein the detection means outputs specific coordinate information corresponding to a signal from a laser pointer or the like.

(5) The pointing device according to (4), wherein the signal is modulated with a predetermined pattern.

(6) The pointing device according to (1), wherein the detection means is formed in a black matrix portion of a color filter of a liquid crystal display.

(7) The pointing device according to (1), wherein the detection means is formed on an upper part of a partition wall of a pixel of a plasma display.

As is apparent from the above description, the present invention has the following effects.
According to the present invention, it is possible to provide a pointing device that has a high position resolution and does not cause a decrease in luminance of a display. Further, according to the present invention, a pointing device with good productivity can be provided.

Hereinafter, the present invention will be described in detail with reference to FIGS. FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention. FIG. 2 is a cross-sectional view of the embodiment of FIG.
A feature of the embodiment shown in FIG.

First, the configuration of the embodiment shown in FIG. 1 will be described.
In the embodiment of FIG. 1, the display is a liquid crystal display. And the detection means 20 is formed between the liquid crystal part 21 and the upper surface glass 22 in a display. Furthermore, the liquid crystal part 21 is formed from a transparent electrode, a liquid crystal, a bottom glass, a backlight, and pixels R, G, and B.

  Moreover, the knowledge means 20 is integrally formed in the non-light emitting part (between pixels) of the display. That is, the knowledge means 20 is formed integrally with the black matrix portion of the color filter.

Here, the configuration of the detection means 20 will be described.
The conductor 11 as the first conductor is formed in a layer structure on the non-light emitting portion 14 of the display. Further, the photoelectric material 13 is formed in a layer structure on the conductor 11. Further, the conductor 12 as the second conductor is formed in a layer structure on the photoelectric material 13.

Next, the configuration of the embodiment shown in FIG. 2 will be described.
The pixels 31 are formed of R, G, or B, and are regularly arranged on the entire surface of the display. The detection means 32 and the detection means 33 are formed in a matrix between the pixels 31.

  And the detection means 20, 32, 33, the liquid crystal part 21, and the pixel 31 are formed integrally.

The operation of the embodiment of FIG. 1 will be described.
Information to be displayed on the liquid crystal unit 21 is output to the outside through the top glass 22. The information displayed on the liquid crystal unit 21 does not pass through the detection means 20.

The pixel 31 displays information. The information displayed on the pixel 31 does not pass through the detection means 32 and the detection means 33.
Therefore, the display brightness does not decrease.

  Moreover, when the detection means 20 irradiates specific light, an electromotive force is generated. Specifically, an electromotive force is generated in the photoelectric material 13.

  Specifically, when a signal from a laser pointer or the like is irradiated from the outside through the top glass 22, an electromotive force is generated only in the detection means 20 to which the signal is irradiated. Note that no electromotive force is generated in the detection means 20 that is not irradiated with a signal.

  For this reason, the detection means 20 outputs the coordinate information of the specific position corresponding to the signal from a laser pointer etc. Similarly, the detection unit 32 and the detection unit 33 output coordinate information of a specific position corresponding to a signal from a laser pointer or the like.

  And the detection means 32 and the detection means 33 output the coordinate information of the specific position which has position resolution comparable as the resolution of a display.

  In the above example, the signal from the laser pointer or the like may be modulated in a predetermined pattern. Specifically, a signal from a laser pointer or the like is blinked at high speed. In this case, there are the same operations and effects as the above example, and malfunction can be suppressed.

  Further, apart from the above-described example, the detection means 20 may be formed such that the electrical characteristics change when specific light is irradiated. Specifically, the resistance value of the photoelectric material 13 changes. In this case, there are the same operations and effects as the above-described example.

  Further, in the above-described example, the detection means responds to a signal from a laser pointer or the like. Alternatively, the detection means may respond to a finger and a stylus. In this case, there are the same operations and effects as the above-described example.

  The present invention will be described below with reference to FIG. FIG. 3 is a longitudinal sectional view showing a second embodiment of the present invention. Note that the longitudinal sectional view of FIG. 3 corresponds to the longitudinal sectional view of FIG.

  The embodiment of FIG. 3 is a case where the display is a plasma display, and the detection means 50 is formed above the partition walls of the pixels 51. The embodiment of FIG. 4 has the same operation and effect as the embodiment of FIG.

  The present invention will be described below with reference to FIG. FIG. 4 is a longitudinal sectional view showing a third embodiment of the present invention. Note that the longitudinal sectional view of FIG. 4 corresponds to the longitudinal sectional view of FIG.

  The embodiment of FIG. 4 is a case where the display is an organic EL display, and the detection means 60 is formed in a non-light emitting portion (between the pixel 61 and the pixel 61) as in the embodiment of FIG. The embodiment of FIG. 4 has the same operation and effect as the embodiment of FIG.

  As described above, the present invention is not limited to the above-described embodiments, and includes many changes and modifications without departing from the essence thereof.

It is a longitudinal cross-sectional view which shows one Example of this invention. It is a cross-sectional view of the embodiment of FIG. It is a longitudinal cross-sectional view which shows the 2nd Example of this invention. It is a longitudinal cross-sectional view which shows the 3rd Example of this invention.

Explanation of symbols

20, 32, 33, 50, 60 Detection means 21 Liquid crystal part 22 Upper surface glass 11, 12 Conductor 13 Photoelectric material 14 Non-light emitting part 31, 51, 61 pixels

Claims (7)

In a pointing device that outputs coordinate information of a specific position on the display,
A pointing device comprising a detecting means formed integrally with a non-light emitting portion of the display.   The pointing device according to claim 1, wherein the detection unit is formed in a matrix between pixels of the display.   The detecting means includes a first conductor formed in a layer structure, a photoelectric material formed in a layer structure on the first conductor, and a second conductor formed in a layer structure on the photoelectric material. The pointing device according to claim 2, further comprising:   The pointing device according to claim 2, wherein the detection unit outputs specific coordinate information corresponding to a signal from a laser pointer or the like.   The pointing device according to claim 4, wherein the signal is modulated in a predetermined pattern.   2. The pointing device according to claim 1, wherein the detecting means is formed in a black matrix portion of a color filter of a liquid crystal display. The pointing device according to claim 1, wherein the detecting unit is formed on a partition wall of a pixel of a plasma display.

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